简介：

简介：

简介：ToscreenandidentifytheshortpeptideswithspecificbindingactivitytohumanCDS9andtodesigntheshort-peptideclampagainsttumorescape,thephagedisplaypeptidelibrarycontaining12peptideswasusedtoselectthehighlyexpressedspecificcoalescentpeptideofhumanCD59inCHOcells.Positivephageclonesobtainedafter5roundsofbiopanninganddetectedwithELISAwereobtained,inwhich8ofthemwithhighbindingactivitytohumanCD59weresequenced.The3sequencesthusobtainedshowedhighhomologywitheachandcertainhomologywithsequencewithhumanCD2(PubMed339HGAAENSISPSS),andallcontainedprimarystructureHXAXXXXXXPXX,ofwhichthissequencemaybethemimicconformationalepitopebindingtohumanCD59.Theseresultsinthepresentstudymaybehelpfultodesigntheshort-peptideclampagainsttheactivesitesofCD59ontumorescape.

简介：ToexploretheeffectofrhlL-15onCB-CD34^+stemcellscommittingtoNKcells,CD34^+stemcellswereobtainedfromcordblood(CB)bymagnetic-assistedcellsorting(MACS)method.CD3,CD16andCD56moleculesexpressedoncellsurfaceweredetectedbyflowcytometer.MTFmethodwasusedtotestthecytotoxicityofNKcells.Theresultswerethatstemcellfactor(SCF)alonehasnoeffectonCD34^+stemcells.IL-15stimulatedCD34^+stemcellscommittoNKcells,andSCFshowedstrongsynergisticeffectwithIL-15.ItwasconcludedthatIL-15andSCFplayeddifferentrolesduringNKcelldevelopment,llr15promotedCD34^+stemcellsdifferentiatetoNKcellprecursorandSCFimprovedtheeffectsofIL-15onNKcelldifferentiation.

简介：Twenty-oneyearsaftermalariaantigenswerefirstclonedavaccinestillappearstobealongwayoff.Therehavebeenperiodsofgreatexcitementandinmodelsystemssubunitvaccinehomologuescaninducerobustprotection.However,significantchallengesexistconcerningantigenicvariationandpolymorphism,immunologicalnon-respons-ivenesstoindividualvaccineantigens,parasite-inducedapoptosisofimmuneeffectorandmemorycellsandimmunedeviationasaresultofmaternalimmtmityandalterationsofdendriticcellfunction.

简介：TostudythemechanismofinfectionofEpstein-Barrvirus(EBV)ingastriccarcinomacells,theAkataandP3HR-1strainsofEBVwereusedastheteststrainsofviruses,andthesignetringcelllineHSC-39ofgastriccarcinomacellswasusedasthetargetcellsofinfection.Thevirus-infectedcellcloneswereisolatedbylimiteddilutionmethod.ItwasfoundthattheEBV-encodedsmallRNA(EBER)couldbedetectedintheinfectedcells.TheAkataandP3HR-1EBVinfectedparentalcellsandmostofclonesexpressedEBNA1,butnotEBNA2.Latentmembraneprotein(LMP-1)andLMP-2,andtheQpromoter(p),butnottheCp/WpforEBNAgenetranscriptionwasactiveintheinfectedparentalcellsaswellasalltheclones.UninfectedHSC-39cellsdidnotexpressCD21,however,AkatabutnotP3HR-1EBV-infectedclonesex-pressedlowlevelofCD21mRNA.TheseresultsdemonstratethatHSC-39cellsaresusceptibletobothEBVstrainsandEBVinfectsHSC-39cellsthroughtheCD21-independentpathway.ThisstudydefinesasignetringtypeofgastriccarcinomacellslineasauniquetargetcellsforthestudyofEBVinfectionmechanism.

简介：

简介：【摘要】目的：分析当归补血汤加味治疗股骨干骨折内固定术后早期症状的效果。方法：选择2018年1月-2019年2月我院接受的股骨干骨折内固定术治疗的28例患者为对象，结合不同的治疗方式分组，甲组实施常规治疗，乙组实施的是当归补血汤加味治疗，两组患者治疗之后，总结效果。结果：分析和对比具体的治疗结果，乙组总有效率高于甲组，分别是90.4%和66.7%。对比分析两组患者的精神状态评分和肢体肿胀评分，治疗前各项评分差异不明显，不具备统计学意义（P＞0.05），治疗后乙组的评分低于甲组。分析和对比不良反应情况，乙组的发生几率低于甲组，数据分析乙组效果明显。结论：针对股骨干骨折实施内固定术治疗的患者采取当归补血汤加味进行后续干预，整体上有重要的作用，能缓解不良症状，值得实施和借鉴。

简介：【摘要】目的：研究妊娠12周、28周和34周补铁对孕妇贫血产后出血的影响。方法：在2018年3月-2020年1月期间，选取我院96例妊娠期缺铁孕妇，按照抽签法，将其分成参照组与实验组，每组48例；参照组给予常规保健，未进行补铁，实验组分别在12周、28周、34周及时补铁，观察两组贫血发生率及产后出血情况。结果：实验组12周、28周、34周血清铁蛋白、血红蛋白优于参照组，贫血及产后出血率发生率低于参照组，组间对比（P

简介：Inthepresentstudy,theeffectofblockageofthecostimulatorysignalCD86attimeofimplantationontheexpressionsofTGF-β1,MMP-9,TIMP-3andPAI-1proteinsatthematernal-fetalinterfaceandtheoutcomeofpregnancyinmurineabortion-pronemodelwasinvestigated,inwhichtheCBA/JxDBA/2matingswereusedastheabortion-pronemodelandtheCBA/J×BALB/cmatingsusedasthenormalpregnantmodel.Thestudywasperformedinfollowingthreegroups:2groupsoftheabortion-pronemodel,whichwereexperimentalgroupandcontrolexperimentalgroup,and1groupofnormalpregnantmodel,andeachgrouphad10pregnantCBA/Jmiceexclusively.FemalepregnantCBA/Jmiceintheexperimentalgroupreceivedanintraperitoneal(i.p.)injectionof100μgofantimouseCD86mAbin200μlofPBSatday4.5ofgestation,andtheirrelevant-isotopematchedratIgG2bwasadministratedinthecontrolexperimentalgroupwiththesamedosageandatsametime.Forthenormalpregnantgroup,notreatmentwasgiven.ThepregnantCBA/Jmicewerekilledonday13.5ofgestation.Then,theembryoresorptionratewascalculatedandtheexpressionsofTGF-β1,MMP-9,TIMP3andPAI-1weredetectedbyusingimmunohistochemicalmethods.Itwasdemonstratedthattheembryoresorptionrateintheexperimentalgroupwassignificantlyreducedincomparisonwiththatinthecontrolexperimentalgroup(x2=7.441,P=0.006),buttherewasnosignificantdifferencewiththatinnormalpregnantgroup(x2=0.016,P=0.898).TheexpressionsofTGF-β1andPAI-1intheexperimentalgroupweresignificantlyincreasedincomparisonwiththatinthecontrolexperimentalgroup(P=0.010,P=0.003,respectively),withnosignificantdifferencefromthatinthenormalpregnantgroup(P=0.500).However,theexpressionofMMP-9intheexperimentalgroupwassignificantlyreducedincomparisonwiththatinthecontrolexperimentalgroup(P=0.012)withnosignificantdifferencefromthatinthenormalpregnantgroup(P=0.500).Theexpression

简介：ExposureofnaivemurineCD4^+TlymphocytestosuperantigensuchasstaphylococcalenterotoxinB(SEB)inducesastrongproliferativeresponse.ProlongedexposureorsubsequentrestimulationoftherespondingTcellpopulationwithSEBleadstotheapoptoticeventsofactivation-inducedcelldeath(AICD).ThesignalingmechanismresponsiblefortheAICDisatargetofintensiveinvestigation.However,theprecisedownstreamsignahngpathwaysofSEB-inducedAICDremainsunclear.Ourresultshereshowthatthesequentialactivationofcaspase-1/ICE-hkeandcaspase-3/CPP32-hkecysteineproteasesprobablyplaysaroleinthesignalingtransductionofSEB-inducedAICD,butcaspase-3/CPP32-hkeproteasesactivationdoesnotdependoncaspase-1-likeproteasesactivation.HerbimycinA,aspecificinhibitorofproteintyresinekinases,inhibitcaspase-3/CPP32-1ikecysteineproteasesactivation.However,itdoesnotpreventDNAfragmentationofCD4^+TcellsapoptosisinducedbySEB.TheseresultsindicatethatproteintyrosinekinasespathwayisprobablyinvolvedinthesignalingtransductionofCD4^+TcellsapoptosisinducedbySEBand“crosstalks”withthepathwayofcaspase-3/CPP32-1ikeproteasesactivation.