简介：目的了解梅毒多变的临床特点，进一步认识该疾病。方法对125例梅毒患者的临床资料进行分析。结果梅毒硬下疳可多发，少数可以留疤，除生殖器外还可以发生在乳房。病例中一患者因乳房赘生物并逐渐破溃而就诊，临床拟诊寻常疣、湿疹、帕哲特病待排，病理诊断为亚急性炎症，然患者血清学检查显示RPR1：64（＋）及TPPA阳性。二期梅毒疹可表现为银屑病样疹、环形红斑、脓疱、扁平湿疣等，其发疹部位可在躯干、掌跖部，也可在头面部。皮疹可与硬下疳重叠出现（13．2％）。结论梅毒临床表现多样化，因此须多加注意。

简介：Objective:ToevaluatethehumoralimmuneinductioninratsofacandidateAIDSvaccineexpressingthegagp24genefromasubtypeBHIV-1isolate.Methods:Theamplifiedp24genewasinsertedintoaneukaryoticexpressionvectortoformthesupercoiledDNAvaccine.ThelinearizedexpressedDNAvaccinewaspreparedfromtheexpressionplasmidbypolymerasechainreaction(PCR).TheantigengeneexpressioninratsofthelinearizedandsupercoiledDNAvaccineswereinvitroandinvivodetected.Results:InvitrotranscriptionandNorthernhybridizationshowedthatthelinearizedDNAvaccinecouldsynthesizeamountsofp24mRNAsimilartothesupercoiledDNAvaccine.AntibodyassaysofinoculatedratsconfirmedthatthelinearizedexpressionDNAcouldinduceaslightlyhigherantibodytiterthantheexpressionplasmid,whilethehighestantibodytiterhadbeeninducedbyplasmidplusadjuvantinoculation.Conclusion:TheconstructionofacandidateAIDSvaccinebasedonthep24genecouldshedlightonapotentialHIVvaccine,meritingevaluationinarhesusmacaqueSHIV-AIDSmodel.

简介：Objective:Toamplifyantigengenesfrompatientswithhumanimmunodeficiencyvirustype1(HIV-1)inGuangdongProvinceforcandidateAIDSvaccinedesign.Methods:Viralnucleicacidwasisolatedfrom10HIV-1infectedindividuals'peripheralbloodcollectedduring1995-2000inGuangdongProvince.Theviralgagp24geneandenvgp120genewereamplifiedbynested-PCRandsequenced.ThehomologiesamongHIV-1isolateswerecomparedwithHIV-BLAST.Results:Among10HIV-1isolates,ninearehomologoustovirusesofsubtypeB,andoneishomologoustovirusesofsubtypeE.Conclusion:SubtypeBvirusesofHIV-1arepredominantlypresentinGuangdongProvince.

简介：背景：慢性荨麻疹是一种临床常见病，发病机制不明，对治疗可能有抵抗性。最近的研究主要集中在自身免疫方面。目的：研究土耳其慢性寻常型荨麻疹（COU，非物理性、血管炎性或接触性）患者的HLAⅠ类抗原和Ⅱ类抗原并识别易感的HLA抗原。方法：应用两阶段微滴淋巴细胞毒性试验研究55例诊断为COU患者的HLA抗原，设立104例无遗传相关性的健康个体作为对照。结果：研究组HLABw4及HLADQ1抗原显著高于对照组（分别为OR2．93，95％CI1．47～5．85，P=0．003及OR7．81，95％CI1．96～28．50，P=0．001），而HLA-A24抗原在对照组中较高（OR0．36，95％C10．15～0．86，P=0．03）。结论：作者提出土耳其人群中HLA-Bw4及HLADQ1抗原可能导致对COU易感，而HLA-A24抗原则可能起保护作用。

简介：Objective:Tostudytheroleofmonocytesinthepathogenesisofgenitalherpes.Methods:TNF-aandIL-6levelsin27casesofgenitalherpesweredetectedbyenzymelinkedimmunosorbantassay(ELISA).HLAclassⅡantigenexpressiononmonocytesweredetectedbyanalkalinephosphataseanti-alkalinephosphatasemethod.Results:Comparedwithnormalcontrols,levelsofTNF-aandIL-6secretedbymonocytesrespondingtoLPSmitogeninvitroweresignificantlydecreased[(3.13±0.44ng/ml)vs(4.68±0.54ng/ml),P<0.05and(3.32±1.06ng/ml)vs(6.46±1.94ng/ml),P<0.05,respectively].HLAclassⅡantigenexpressiononmonocytesinthegenitalherpesgroupwasalsosignificantlydecreased[HLA-DR(67.48%±1.51%)vs(81.03%±1.32%),P<0.01andHLA-DQ(29.54%±1.15%)vs(37.63%±1.79%),P<0.01respectively].Conclusion:Thesefindingssuggestthatthedecreasedmonocytefunctionmaycontributetothepathogenesisofgenitalherpes.Augmentingorinducingmonocytefunctionmaybeimportantintheprevention,treatment,andreductionofgenitalherpescases.

简介：Objective:Toanalyzesubtypesandquasi-speciesofisolatedvirusesfromHIV-1infectedindividualsamongthepopulationepidemiologicaldynamicsoflocalHIV-1isolates,thuslayingafoundationfordesigningacandidateAIDSvaccine.Methods:Byhetero-duplexmobilityassay(HMA)andsinglestrandconformationpoly-morphism(SSCP)analysisonampliconsfromsingle-primedpolymerasechainreaction(SP-PCR),subtypesandquasi-speciesoftestedHIV-1isolateswereelucidated,andampliconsweresequencedforconfirmation.Results:Specificampliconsfromdifferentsubtypesandquasi-speciesofHIV-1couldbediscerniblebyHMAandSSCPanalysis.HIV-1isolatesfromdifferentpatientsmightbeeitheradifferentsrbtypeoranidenticalsubtype,andHIV-1isolatesfromanindividualwerepresentinapopulationofquasi-species.

简介：目的研究单纯疱疹病毒2型(HSV-2)对人单核细胞表达HLA-Ⅱ类抗原(HLA—DR、HLA-DQ)的影响，探讨单核细胞及HLA-Ⅱ类抗原在单纯疱疹病毒2型感染中的作用。方法用单纯疱疹病毒2型(333株)感染人单核细胞，于感染后1、3、5、7天分别收集细胞，用APAAP法检洲单核细胞HLA—DR、HLA-DQ表达水平。结果单纯疱疹病毒2型感染后1天，单核细胞表达HLA-KR、HLA—DQ抗原水平明显降低，以后逐渐升高，至7天达到对照组水平。结论单纯疱疹病毒2型感染早期能抑制单核细胞表达HLA—Ⅱ类抗原，HSV-2抑制单核细胞表达HLA-Ⅱ类抗原可能是HSV-2入侵机体的手段之。HLA-Ⅱ类抗原在单纯疱疹病毒2型致病及免疫过程中可能起重要作用。