简介：目的探讨生殖支原体在非淋菌性尿道炎(NGU)／粘液脓性宫颈炎(MPC)中的发病情况。方法应用聚合酶链反应对236例STD门诊的非淋菌性尿道炎(NGU)／粘液脓性宫颈炎(MPC)患者泌尿生殖道标本进行了生殖支原体的检测。结果生殖支原体的阳性检出率为17．8％。结论生殖支原体在性病高危人群中有一定发病率，可引起非淋菌性尿道炎(NGU)／粘液脓性寓颈炎(MPC)。

简介：Objective:Infectionofhumanpapillomavirusincondylomaacuminatum(CA)wasdetectedbyrealtimefluorescencequantitativePCR(FQ-PCR)technique.Methods:SpecimensofCA-DNAquantificationfrom94caseswereexaminedbyrealtimeFQ-PCRtechniqueand32caseswerecomparedwiththesamemethodafter10-daystreatment.Results:CA-DNAwasfoundinallpatients,withanaverageof4.0×10^6copies/ul.After10daysoftreatment,theaveragewas2.1×10^5copies/ul.TherewasasignificantdifferenceintheaverageamountofCA-DNAbeforeandafterthetreatment.Conclusion:RealtimeFQ-PCRisagoodmethodforexaminingCA-DNAamountanditcandirectthetreatmentofCA.

简介：Objective:Tocomparethesensitivityandspecificityofthecervical/urethralswabswithvoidedurinespecimensforthedetectionofgenitourinarytractinfectionwithChlamydiatrachomatisanddeterminewhetherurinespecimenscanreplacethecervical/urethralswabsindetectionofC.trachomatis.Methods:Thematchedcervical/urethralswabsandvoidedurinespecimenswerecollectedfrom569patientsofSTDclinics.Polymerasechainreaction(PCR)assayspecificforC.trachomatisplasmidDNAandrapidantigentesting(Clearviewassay)wasusedtodetectC.trachomatis.Standardcriteriathatdefined""""true""""positiveincluded:1)positivePCRresultsbothincervical/urethralswabandvoidedurinespecimenor2)positivevoidedurineresultsbothbyPCRassayandclearviewtestor3)positiveresultsinbothPCRassayofcervical/urethralswabandclearviewtestofvoidedurine.Forstatisticalanalysis,thechi-squaretestwasused.Results:TheprevalenceofC.trachomatisinpatientswithsymptomswas12.1%(28/231)inwomenand10.4%(10/96)inmen,withnosignificantdifferencebetweenthem(x^2=0.21,P>0.05).TheprevalenceofC.trachomatisinpatientswithnosymptomswas11.0%(11/100)inwomenand15.5%(22/142)inmen,withasignificantdifferenceexistingbetweenthem.(x^2=4.0,P<0.05).Nosignificantdifference(P>0.05)existedbetweenPCRtestingofswabs(sensitivity87.3%;specificity99.2%)andPCRtestingofurine(sensitivity88.7%;specificity98.8%).Asforclearviewassay,sensitivitywas60.6%andspecificitywas100%.Conclusions:PCRassayissuperiortoclearviewindetectingC.trachomatis.AlthoughbothPCRtestingofswabsandPCRtestingofurinespecimensbothhavehighsensitivityandspecificity,urinespecimentestingismorecost-effective,practicalandnoninvasive.ThusurinespecimenscantaketheplaceoftheswabsinPCRtestingforchlamydia.

简介：目的评价PCR检测女性自取阴道下端拭子标本诊断淋病的检验效果方法每例入选者均取2个宫颈拭子标本和1个自取阴道下端拭子标本，1个宫颈拭子标本和自取阴道下端拭子标本行淋球菌PCR检测，另1个宫颈拭子标本行淋球菌培养。结果共有298例入选者。诊断出淋病31例。宫颈拭子培养、宫颈拭子PCR、自取阴道下端拭子标本PCR的敏感性分别是75．8％(25／33)，87．9％(29／33)和97．0％(32／33)，特异性分别是100％(265／265)，99．6％(264／265)和99．6％(264／265)。结论自取阴道下端拭子标本PCR检测淋球菌的敏感性至少不低于传统的宫颈拭子，自取阴道下端拭子标本可以替代宫颈拭子行PCR诊断女性淋病。

简介：Abstract:TheP24antigentest,HIVRNAPCRtest,HIVisolation/cultureandfourth-generationHIVuniformAg/AbassayarebeingutilizedindiagnosingacuteHIVinfectionindifferentlabs.ManyfactorslimittheuseofscreeningforacuteHIVinhigh-riskpopulations,inblooddonorsandduringvoluntaryHIVtesting,including,cost,technique,sensitivityandspecificity.InthisreviewweexploreanewNAATmethodwhichinvolvesHIVRNART-PCRonpooledsamples.Thistechniqueisabletoscreenforacuteinfectionsinalargetestingvolumeandmayheusedasascreeningmethodinhigh-riskpopulationsandblooddonors.

简介：目的：探讨PCR＋膜杂交法CT／UU／NG三联检测在临床性病筛查中的应用价值。方法：分别采用PCR＋膜杂交法和实时荧光PCR法检测CT、UU、NG，并分析比较两种方法的一致性以及相关性。结果：PCR反向膜杂交法和实时荧光PCR法的CT、UU、NG的筛查结果接近（P〉0．05），而男女筛查结果差异较大（P〈0．05）。结论：PCR反向膜杂交法操作简便，筛查快速、准确，有与实时荧光PCR法相当的检测准确性，具有较高的临床应用价值，值得在临床中推广应用。

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简介：Objective:Todevelopasensitive,specificandsimplemethodfordetectionofextremelylownumbersofT.palliduminclinicalspecimens,asasignificantadditiontotheserologictestsforsyphilisdiagnosis.Methods:Double-tubenestedPCR(DN-PCR)andsingle-tubenestedPCR(SN-PCR)assayswereperformedtoamplifyspecificfragmentsoftheDNApolymeraseIgene(polA)ofT.pallidum.SensitivityandspecificityofthetwoPCRassaysweretested.EightysixwholebloodspecimensfrompersonswithsuspectedsyphilisweredetectedbythetwonestedPCRmethods.TheTPPAtestwasusedasacomparisonfordetectingsyphilisinserafromcorrespondingpatients.Results:OnlyspecificampliconscouldbeobtainedduringamplificationoftheT.pallidumpolAgeneandthedetectionlimitwasapproximately1organismwhenanalyzedongelbythetwoPCRmethods.Of86clinicalspecimens,62werepositivebyTPPA.Ofthese,54and51werepositivebytheDN-PCRandSN-PCR,respectively,whichdoesnotrepresentastatisticallysignificantdifferencebetweenthetwoPCRtests.Of24TPPA-negativespecimens,5werepositivebybothDN-PCRassayandSN-PCRassay.Conclusion:TheSN-polAPCRmethodisextremelysensitive,specificandeasytoperformfordetectinglownumbersofT.palliduminclinicalbloodspecimensasacomplementarytoserologyforsyphilisdiagnosis.

简介：目的：建立一种快速、稳定、灵敏且可定量的检测马尔尼菲青霉病的SYBRGreenⅠ实时荧光定量PCR方法。方法：根据马尔尼菲青霉ITS序列，设计并合成引物，通过常规PCR扩增目标序列后，将鉴定正确的目的基因片段克隆入pGEM-T载体中，转化大肠杆菌JM109，经PCR及测序鉴定后得到阳性重组质粒，作为标准品模板建立SYBRGreenⅠ荧光定量PCR标准曲线和溶解曲线，得出拷贝数与循环阈值之间的线性关系曲线表达式，并做灵敏性、特异性试验。结果：荧光定量PCR标准曲线阈值与模板浓度呈良好的线性关系，溶解曲线特异，相关系数为1.938，最低检测的拷贝数为8.5个/反应管。结论：建立了检测马尔尼菲青霉病的SYBRGreenⅠ实时荧光定量PCR方法，为该病的早期诊断及定量分析感染程度及对治疗的指示作用奠定了良好的基础。

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：目的比较荧光多重PCR和血清型特异性抗体测定在生殖器疱疹临床诊断中的应用价值及评价各自的优缺点。方法以细胞培养法作为“金标准”对照，分别用荧光多重PCR和血清型特异性抗体检测法对121例临床诊断为生殖器疱疹的标本进行检测。结果以培养法作标准，并通过结果的差异性分析，荧光多重PCR的敏感性为100％，特异性为88．89％；血清型特异性抗体测定则分别为77．68％和77．78％，荧光多重PCR的敏感性和特异性均显著高于血清型特异性抗体测(P<0．05)，但前者不能检测出无皮损患者的HSVDNA，而后者可检测出无皮损患者中的HSV抗体。结论荧光多重PCR和血清型特异性抗体检测各有其自身的优缺点，单独用PCR和其它病毒分离的方法或单独使用血清特异性抗体检测的方法来诊断生殖器疱疹都是不完整的，均可造成漏诊。临床上将两种方法有机的结合起来应用能发挥各自的优势，取长补短，对早期、准确、快速地诊断生殖器疱疹及进行流行病学调查将有十分重要的意义和使用价值。

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