简介：目的首次报道3例大观霉素治疗淋病失败病例，对其原因进行了研究分析。方法以氧化酶试验和糖发酵试验鉴定3株淋球菌，用琼脂稀释法进行体外药物敏感性试验。结果3株菌均氧化酶阳性，糖发酵试验仅分解葡萄糖，鉴定为淋球菌。药物敏感性试验3株淋球菌均对头孢曲松敏感，对环内沙星耐药；2株淋球菌为耐大观霉素淋球菌，其中1株亦为产青霉素酶淋球菌(PPNG)；第3株淋球菌为大观霉素敏感菌株，但为PPNG及耐四环素淋球菌(TRNG)。病史提示第3例患者是因为药物注射不当或吸收剂量不足而至治疗失败。结论大观霉素治疗淋病失败的原因有耐药问题，还有注射不当。

简介：

简介：Objective:AllelicpolymorphismsofCCR5△32、CCR2b-64I,CX3CR1-249I280MandSDF1-3’AassociatedwithHIV-1infectionanddiseaseprogressionwereinvestigatedinindigenousUygurpopulationsfromtheXinjiangUygurAutonomousRegionofChina.Mithods:Thestudypopulationcomprised316healthyUygursubjectswithanagerangeof1-80yearsold,fromwhomwholeperipheralbloodsampleswerecollectedandnonewereHIV-1seropositive.GenomicDNAsampleswerepurifiedusingaQiagenBloodKit.GenotypingoftheaforementionedfouralleleswasperformedusingPCRorPCR/RFLPassay,andfurtherconfirmedbydirectDNAsequencing.Results:TheallelicfrequenciesinChineseUygurpopulationwereasfollows:3.48%forCCR5△32;19.45%forCCR2b-64I;13.8%forCX3CRI-249I280Mhaplotype,and20.41%forSDFI-3’A.MutantalleledistributionsamongUygurpopulationswereinaccordancewiththeHardy-Weinbergequilibrium.NostatisticaldifferencewasfoundbetweenthefrequencyofthethreeHIVcoreceptorsandtheirrespectiveligandgenes.Conclusion:ThefrequencyofSDF1-3’AandCX3CR1-249I280MhaplotypemorecloselymatchedthehanChinese.ThefequencyofCCR5△32inUygurpopulationswasbetweenCaucasianandHanfrequencies,themorecloselymatchingthefrequencyinMedi-Asiapeople.NogeneticlinkagebetweenanytwoofthethreeHIVcoreceptorgeneswasfound,butobviousgeneticlinkagesexistedbetweenCX3CR1-249IandCX3CR1-280M,withevenhigherlinkagedegreesthanCaucasianpeople.

简介：

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：

简介：巴西天疱疮(FS),一种地方性落叶型天疱疮(PF),是以抗桥粒核心糖蛋白-1自身抗体阳性为特点的自身免疫性大疱性疾病,之前该病主要集中在巴西MatoGrossodoSul的LimaoVerde地区,,在FS患者的血清中亦可检测出抗桥粒核心糖蛋白-3(Dsg3)抗体,为进一步确定该病的血清学、地域分布、临床流行病学特点,作者试图应用ELLSA法检测生活在该地区及非本地人的正常个体的血清中抗Dsg3自身抗体。146例来自Li-maoVerde的正常人中有53例(占36%)检测到抗Dsg3自身抗体,而来自周边地区的140例正常人中只有8例(占6%),检测出的阳性率比例与该高发区域的距离呈现显著性的相关趋势。(P<0.001)。作者的血清流行病学调查支持FS发病中触发了抗体反应的环境因素很可能就位于该地,也同意来自Brasilia合作研究者所报道的观点,即可能发展为FS的危险人群也可能有发展成地方性寻常性天疱疮的危险。巴西地方性天疱疮患者抗桥粒核心糖蛋白-3抗体检测@Hilario-VargasJ.@DasherD.A.@L.A.Diaz$DepartmentofDermatolo...

简介：

简介：

简介：Objective:Theaiminthisstudywastoidentifytheallelicfrequenciesofthechemokine(SDF1-3'A)andchemokinereceptor(CCR5△32,CCR5m303andCCR2-64I)genesresistanttoHIV-1infectionand/ordiseaseprogressioninindigenousChinesepopulations.Methods:ByusingQIAampDNABloodMiniKit,thegenomicDNAsampleswerepurifiedfromwholeperipheralbloodofhealthyindividuals(n=2067)fromHan,Uygur,MongolianandTibetanethnicgroups,aswellasHanpatientsincludingHIV-1carriers(n=330),patientswithothersexuallytransmitteddiseases(STDs,n=259)andintravenousdrugusers(IVDUs,n=125).TheallelicpolymorphismswereidentifiedbymeansofPCRorPCR-RFLPanalyses.ThesequencesofrandomlyselectedamplifiedPCRproductswerefurtherconfirmedbydirectDNAsequencing.Results:Themutantfrequencieswereidentifiedtobe0%-3.48%forCCR5△32,0%forCCR5m303,19.15%-28.79%forCCR2-64and19.10%-28.73%forSDF1-3'Aalleles,respectively,inChinesehealthyindividualsfromfourethnicgroups.Ourfindingsindicatedtheallelicfrequenciesvaryamongthedifferentethnicgroups.Furthermore,theHIV-1carriers,STDcasesandIVDUs(allofHanethnicity)werefoundtohavetheallelicfrequenciesof0%-0.19%(CCR5A32),0%(CCR5m303),19.31%-20.45%(CCR2-64)and25.61%-26.83%(SDF1-3'A)withminorvariationsintheirfrequenciesbetweenthepatientsandhealthyHangroups.TherewasnoCCR5-m303mutationfoundinanysubjectinthisstudy.Conclusion:TheexaminedsubjectsoffourChineseethnicoriginsshowedlowerfrequenciesofCCR5A32andCCR5m303alleles,buthigherfrequenciesofmutantCCR264IandSDF1-3'Aallelescomparedtothoseidentifiedinnorthern-EuropeanandAmericanCaucasians.ThesignificanceofthedifferentfrequenciesandpolymorphismsoftheaboveallelesinChinesepopulationsneedstobefurtherexaminedinHIV-1/AIDSdiseases.

简介：机械性大疱性疾病Hallopeau-Siemens隐性遗传营养不良型大疱性表皮松解症(HS-RDEB)是由染色体3p21.31上的Ⅶ型胶原基因(COL7A1)突变引起,典型表现为2个等位基因上出现移码、剪切位点或无义突变。本文作者描述了1例HS-RDEB患者发生了一种新的纯合性移码突变,在COL7A1外显子3上的第345位点插入G。然而,亲代DNA序列分析显示尽管患儿的母亲是这一突变的杂合子携带者,其父亲的DNA仅包括野生型序列,微卫星标记分析确认其亲子关系并对3号染色体的28个微卫星基因检测显示患儿3号染色体的所有等位基因的标记物检测均显示其为3号染色体呈现单母体型的纯合子。由此认为,该患者HS-RDEB的基因型是由于3号染色体的单亲二体性以及COL7A1突变基因位点的纯合性降低所致。根据作者了解,单亲二体性染色体(UPD)型HS-RDEB以往文献中未见有报道,而且,本文报道的患儿为染色体3型UPD的第3例病例。本例HS-RDEB的严重性与其他此型基因改变的病例相似,未观察到有其他的表型异常,提示其有3号染色体上的母体印记基因缺乏。3号染色体呈单亲二体性而无其他异常表型的隐性遗传营养...

简介：

简介：

简介：

简介：