简介：ObjectiveTodetectthecellviabilityandtheexpressionsofstemcellsurfacemarkersafterchemotherapeuticdrugtreatment.MethodsWeobservedthecytotoxiceffectsofthreechemotherapeuticagents[epirubicin(Epi),fluorouracil(5-FU)andcyclophosphamide(Cyc)]inthreecelllines,andthecellviabilitiesafterremovedthesechemotherapeuticagents.ExpressionsofstemcellsurfacemarkersCD44,CD24,CD90,CD14andaldehydedehydrogenase1(ALDH1)inbreastcancercellswereanalyzedbyreal-timePCR.Theposthocanalysis(Tukey’stests)inconjunctionwithone-wayANOVAwasusedforstatisticalanalysis.ResultsTheinitialcytotoxicefficacywasmostnotable.Afterthetreatmentofthesametherapeuticagents,cellviabilitywasdecreasedby64.8%35.14%,32.25%inBT-483cells,66.4%,22.94%and45.88%inMDA-MB-231cells,97.1%,99.5%and76.4%inMCFcells.Thedifferencewassignificantcomparedwiththatbeforetreatment(P=0.000).However,theinhibitoryeffectswerediminishedafterchemotherapeuticagentwithdrawal.Cellviabilitieswereincreasedto167.9%,212.04%and188.66%inMDA-MB-231cellsat48hafterwithdrawal.At72hafterwithdrawal,cellviabilitywasincreasedwithasignificantdifferenceinthreecelllines(allPvalues=0.000).ExpressionsofCD44andALDH1weremostprevalentforMDA-MB-231,BT-483andMCF-7cells.ALDH1mRNAlevelwassignificanthigherinBT-483(HER-2overexpressioncellline)thanMDA-MB-231(triplenegativecellline)(P=0.012).CD14mRNAlevelinMCF-7cellsweresignificantlylowerthanthatinMDA-MB-231andBT-483(P=0.003,0.001).BT-483showedsignificantlyhigherlevelofCD44thanMDA-MB-231andMCF-7cellline(P=0.013,0.020),andnosignificantdifferencewasdetectedbetweenMDA-MB-231andMCF-7breastcancercells(P=0.955).CD90mRNAexpressionsweredetectedinMDA-MB-231cellsandMCF-7cells,butnotinBT-483cells.ConclusionSomemalignantcellscouldsurviveinvitroandbegintoproliferateagainbetweencyclesofchemotherapy.

简介：Translationalresearch,ingeneral,meanstotakeknowledgefromoneareaintoasecond.Traditionalthoughttorepresenttransferofknowledgefrombasicresearchintotheclinic,translationalresearchtodaycoversamuchbroaderterm.Thus,mostinvestigatorswillagreetranslationalresearchcoversatwo-wayprocessthatalsoincludestakinglessonsfromtheclinicbacktothelaboratory,bywhichbiologicalobservationsinvivowouldcreatenovelhypothesestobefurtherexploredinlaboratoryexperiments.

简介：Breastcanceristhemostprevalentfemalecancerinboththedevelopedandlessdevelopedworld.AccordingtoWHO2013estimates,therewereover522000femalebreastcancerdeathsin2012[1].Breastcancer(1.7million)wasthesecondcommonlydiagnosedcancerworldwideafterlungcancer(1.8million),andfollowedbycolorectalcancer(1.4million)[1].Inless

简介：Breastcanceristheleadingcauseofdeathamongwomenattheagesof20-59years[1].TheincidenceofbreastcancerinAsiaisalsoshowntobeincreasingrecently,especiallyinthemoreaffluentcities,andthepeakincidenceofbreastcancerisattheageof45-50years[2].BreastcancerpreventionhasstartedfromsecondarypreventionstrategyofearlydetectionofthediseasewithdifferentmodalitiesinAsia[3-5]despitetheabsenceofunifiednationwidescreeningprogram.Therearealotof

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简介：背景：中国每年新发胃癌患者40万人、死亡人数达30万人，而且胃癌已呈现年轻化趋势，30岁以下年轻人的比例由上世纪70年代的1．7％升至当前的3．3％。

简介：胃癌乳腺转移非常罕见，到目前，全球报道不足500例。临床上很容易误诊、误治。本文报道1例并结合文献探讨其临床特点及与胃癌、乳腺癌双原发癌的鉴别诊断。