简介：TostudytheroleofTh1/Th2cytokinesinthepathogenesisofrecurrentgenitalherpes(RGH),andtobetterunderstandtherelationshipbetweenthem.Methods:Atwo-colorimmunofluorescentstainingofcellsurfaceantigenandintracellularcytokinesforflowcytometricanalysiswasusedforCD3,IL-2,IL-10,IL-12,IFN-yandTNF-ainCD3^+T-lymphocytesinactivatedperipheralbloodmononuclearcellsofpatientswithRGH.Results:Comparedtocontrols,patientswithRGHshowedfewerCD3^+Tcells(P<0.05)andIL-2producingandIFN-7producingTcells(P<0.02andP<0.001,respectively)afterinvitrostimulationwithPMAandionomycininthepresenceofaproteintransportinhibitor.MoreIL-10producingandIL-12producingTcellswerefoundinpatientswithRGH(P<0.01).TherewasnosignificantdifferenceinthenumberofTNY-αproducingcellsbetweenRGHpatientsandcontrols(P<0.05).Conclusion:RGHpatientsshowedrelativelymoreTh2cytokines.TheimbalancebetweenThlandTh2cytokinesresultsininhibitoryeffectsonaseriesofcell-immuneresponses,whichmayplayanimportantroleinthepathogenesisofRGH.

简介：Objective:TostudytheprevalenceofTrichomonasvaginalis(TV)infectioninChinesemalepatientswithnongonococcalurethritis(NGU),toevaluatethesensitivityandspecificityofurine-basedandurethralswabpolymerasechainreaction(PCR)detection,tosetupamethodfornon-invasivedetectionofmaleTVinfection.Method:OnehundredandfivemaleNGUpatientswereselectedfromaBeijingSTDclinic.Twourethralswabswereobtainedfromeachpatient,onefortheInPouchTVculturesystemandtheotherforPCR.Inaddition,onefirstvoidurinespecimenwascollectedforPCRdetection.Culturewasconsideredthe“goldstandard”.Thesensitivity,specificity,positivepredictivevalue(PPV)andnegativepredictivevalue(NPV)ofthetwoPCRdetectionswerecomparedtocultureresults.Results:Theprevalenceofurine-basedPCRandurethralswabPCRdetectionwas3.81%(4/105)and4.76%(5/105)respectively.Comparedtoculture,thesensitivity,specificity,PPVandNPVwere80%,100%,100%and99%forurine-basedPCRand80%,99%,80%and99%forurethralswabPCR.Conclusion:TVisoneoftheetiologicalagentsinmaleNGU,witha4.76%prevalenceofinfectioninourstudy.TheurinebasedPCRdetectionhashighersensitivityandspecificityandprovidesanoninvasivemethodmorefeasibleinpractice.

简介：Objectives:TodevelopamethodofsimultaneousPCRdetectionofHaemophilusducreyi,Treponemapallidum,andHerpesSimplexVirusTypes1and2fromgenitalulcersamongpatientsattendingSTDclinicsinGuangzhou,China;andevaluatetheclinicalapplicationofmultiplexPCR(M-PCR)assayfordiagnosingtheetiologyofgenitalulcerdiseases(GUD).Methods:244patientswithagenitalulcerwereevaluated.ClinicaletiologyofGUDwasbasedonphysicalappearanceandmicrobiologicevaluationsthatincludeddarkfieldmicroscopyexamination(D-F)andserologytestforsyphilis(STS).SwabsofeachgenitalulcerweretestedforHSVantigenbyenzymeimmunoassay(EIA)andprocessedinanM-PCRassayforsimultaneousdetectionofT.pallidum,HSVandH.ducreyi.Results:ThestandardstrainsofT.pallidum,HSVandH.ducreyiwereamplifiedbyM-PCR,producingamplifiedproductsof260bp,432bp,170bp,respectively.ThesensitivityofM-PCRis102pgDNA.M-PCRassayforT.pallidum,HSVandH.ducreyishowedgoodagreementwhencomparedwithD-FdetectionforT.pallidum,STS,H.ducreyicultureandEIAforHSVantigen(Kappascoresare0.774,0.704,0.793,0.756,respectively).Conclusions:TheM-PCRisaconvenient,accurateandreliableassayforthedetectionofT.pallidum,HSVandH.ducreyifromgenitalulcers,andcanbeusedasamethodofdiagnosingtheetiologyofGUD.

简介：Objective:TounderstandthechangeofTh1/Th2andTc1/Tc2balanceinpatientswithsecondaryearlysyphilis.Methods:PeripheralbloodThandTccellsubpopulationswereexaminedbythree-colorflowcytometryin30patientswithsecondaryearlysyphilisand20healthysubjects.Results:PercentagesofCD3^+,CD4^+TcellsandtheratioofCD4^+/CD8^+andNKcellsinsyphiliticpatientsweresignificantlylowerthaninthecontrolgroup(P<0.001),butnostatisticaldifferencewasfoundinpercentagesofCD8^+andCD19^+cellsbetweenthetwogroups(P>0.05).ThepercentageofTh1cellsandratiosofThl/Th2andTcl/Tc2insyphiliticpatientswereclearlydecreasedascomparedtothoseincontrois(P<0.001-0.01),whereaspercentagesofTc0andTc2cellsinsyphiliticswashigherthanthoseincontrols(P<0.001).Conclusion:Therecouldbeadisturbanceofcellularimmunityandtherelativelyintactfunctionofhumoralimmunityinsecondarysyphilis.ItispostulatedthatthepolarizationtowarddevelopmentofTh2andTc2cellsandtheirassociatedcytokinesmightbeinvolvedintheincompleteclearanceoftreponemesandthedevelopmentofchronicinfection.