简介:高免疫球蛋白E综合征(HIES)是一种罕见的免疫缺陷性疾病,表现为血清IgE水平升高、皮肤湿疹、反复皮肤感染和特征性的肌肉骨骼表现。作者报道2例在本院就诊的患者并回顾当前文献。患者1是一18个月大的非裔美国男孩,伴有复发性葡萄球菌冷脓肿、肺炎和菌血症。该患者皮肤严重湿疹化,最终并发疱疹性湿疹。在选用敏感抗生素环孢素A(5mg/kg)短期治疗全身性感染后,皮炎改善,随后改为长期口服甲氧苄啶一磺胺甲恶唑。患者2是一15岁高加索男孩,长期患有HIES。该患者从3岁开始即维持每周3次注射1干扰素和每月静脉注射免疫球蛋白,并预防性应用抗生素和小剂量氟康唑。
简介:Objective:Todetectandquantitategenitalherpessimplexvirus(HSV)DNAinspecimensfrom100patientsclinicallydiagnosedwithgenitalherpes.Methods:PolymeraseChainReaction(PCR)andenzyme-linkedimmunosorbentassay(ELISA)wereusedwithastandardcurveofDNAcopiesofHSVasquantitativecontrast.Results:Ninety-threecaseswereconfirmedHSVpositiveand7caseswerefoundtobenegative.Therewere58casesofHSV-2(62.4%)and35casesofHSV-1(37.6%)amongthe93positivecases.ThenumberofDNAplasmidsrangedfrom115to1.1×l0^5per250pLamongthe93positivesamples(mean=7.1×10^4/250μL).ThenumberofHSVDNAplasmidsrangedfrom136to1.1×l0^5copiesper250pL(mean=7.6×10^4)amongthosewithHSV-2,and115to9.4×10^4per250pL(mean=6.3×10^4)amongthosewithHSV-1.Meanwhile10μLofextractedanddissolvedDNArandomlytakenfrom8eachofHSV-2andHSV-1samplesweretested.ThenumberofHSV-2DNAplasmidsrangedfrom35copiesto2.7×10^4(Mean=l.8×10^4)andthenumberofHSV-1DNArangedfrom29to2.5×10^4(Mean=1.6×10^4).Inthe7negativecases,thequantityofHSVplasmidswaszero.Conclusion:ThesensitivityofELISAquantitation(93%)isequaltothatofSouthernblot.ThesensitivityofPCRfordiagnosisis91%,and88%forPCRtyping.
简介:Objective:ToexploretherelationshipbetweenquantitativeTreponemapallidumDNA(TP-DNA)PCRtestingandtheToludineRedUnheatedSerumTest(TRUST)inpatientswithsyphilisbeforeandaftertreatment,andevaluatetheclinicalvalueofquantitativeTP-DNAtestinginthediagnosisandtreatmentevaluationofsyphilis.Methods:29patientswithprimary(12cases)orsecondary(17cases)syphilis,whometthecriteriasetforthisstudywererecruitedassubjects.Allpatientsweretreatedwith2.4millionunitsbenzathinepenicillinIMweeklyfor3weeks.QuantitativetestsofTP-DNAinthepatients'plasmawereperformedusingFQ-PCRbeforeandafterthetreatment.SerologictestsincludingTRUSTandTPPAwerealsoperformed.Results:Beforethetreatment,9outof12primarysyphilispatients(75%)andallsecondarysyphilispatients(17/17)testedpositiveforTreponemapallidum(TP)byTP-DNAtesting.TheaveragequantitativetestvaluesofTP-DNAinprimaryandsecondarysyphilispatientswere(3.38±2.34)×10^4and(5.73±1.33)×10^6copies/ml,respectively.Afterthreemonthsoftreatment,1ofthe9primaryand5outof17secondarysyphilispatientswerepositiveuponTP-DNAtesting,respectively.TheaveragequantitiesofTP-DNAwere2.01×10^2copies/mlinprimaryand5.87×10^2copies/mlinsecondarysyphilispatientswithpositiveTRUSTandTP-DNAtests,and3.09×10^2copies/mlforthosewithnegativeTRUST,respectively.Afterninemonthsoftreatment,alltheprimaryandsecondarysyphilispatientswerenegativeuponTP-DNAtesting,whileallprimaryand14of17(82.35%)secondarysyphilispatientsshowednegativeTRUSTresults.Conclusion:ThattheresultsofTP-DNAtestsarenotconsistentwiththoseofTRUSTbeforeandaftertreatmentindicatesthatquantitativeTP-DNAtestingmayhavevaluableclinicalsignificanceintheearlydiagnosisandevaluationoftreatmentregimensforsyphilis.
简介:Objectives:Todevelopamulti-nestedpolymerasechainreactioninanassaytodetectearlyTreponemapallidumandHaemophilusducreyiDNAintheswabsofgenitalulcers.Methods:Fourpairsofouterandinnerprimers,specifictothebasicmembraneproteingeneofTreponemapallidumandtothe16srRNAgeneofHducreyiweresynthesized.Themulti-nestedPCRwasdevelopedandappliedtodetectTreponemapallidumandHaemophilusdicreyiinclinicalswabs.Result:ThetwosamplesofstandardstrainsofHaemophilusducreyiandoneTreponemapallidumwereamplifiedandshowed309-bprRNAgeneofHaemophilusducreyiand506-bpDNAofTreponemapalidum,respectively.Outof51samplesofgenitalulcerdetected,29showedTreponemapallidumpositiveproductandnoHaemophilusducreyiDNAwasfound.Conclusion:Themulti-nestedPCRforTreponemapallidumandHaemophilusducreyicouldbeusefulforearlydetectionanddistinguishingdiagnosisbetweensyphilisandchancroid.
简介:目的:评价宁泌泰胶囊联合左氧氟沙星片对慢性前列腺炎患者前列腺液中分泌型免疫球蛋白A(SIgA)的影响。方法:选择于2010年12月至2013年11月在我院进行治疗的慢性前列腺炎患者150例,随机分成对照组和观察组,各75例。对照组:采用左氧氟沙星片进行治疗。观察组:采用左氧氟沙星片联合宁泌泰胶囊进行治疗。结果:观察组总有效率为88.0%优于对照组的总有效率73.3%,差异具有统计学意义(P<0.05)。治疗后,两组患者前列腺液中SIgA水平均存在一定程度的下降,但是观察组在治疗后2周、治疗后4周、治疗后6周以及治疗后8周的前列腺液中的SIgA水平均明显低于对照组,差异具有统计学意义(P<0.01)。结论:宁泌泰胶囊联合左氧氟沙星片在慢性前列腺炎的治疗中具有较高的应用价值,可以显著降低前列腺液中的SIgA水平,同时能够大幅改善缓解患者的症状,临床意义显著。
简介:患者男,82岁,面部、躯干浸润性红斑伴痒1月余来院就诊.组织病理示:真皮毛囊上皮水肿,黏液池形成,毛囊内及周围少量淋巴细胞浸润.阿新蓝染色(+).免疫组化示:CD3(+)、CD4(+)及UCHL-1(+).诊断为毛囊粘蛋白病向嗜毛囊性蕈样肉芽肿转化.
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:目的通过对梅毒螺旋体(treponemapallidum,TP)脂肽激活巨噬细胞产生细胞因子以及脂肽所诱导的免疫耐受对信号通路的影响进行研究,为进一步完善TP感染人体的免疫学过程,解释TP感染人体后引起的血清固定现象提供理论依据。方法不同浓度的TP脂肽刺激经PMA诱导THP-1细胞转化的巨噬细胞,利用酶联免疫吸附试验(ELISA)检测其分泌细胞因子的水平,并通过阻断CD14受体后,检测巨噬细胞对合成脂肽的反应能力以及合成脂肽耐受刺激后诱导巨噬细胞产生免疫耐受的能力。采用Westernblot法检测细胞内的信号转导分子。结果3种合成脂肽诱导巨噬细胞分泌白细胞介素(IL)-β及IL-8的能力随着脂肽浓度升高而递增。CD14受体阻断后,IL-1β及IL-8分泌水平均明显减少。合成脂肽经耐受后刺激的IL-1β及IL-8分泌水平明显低于直接刺激的细胞因子的水平。合成脂肽在耐受刺激下,其巨噬细胞内的信号转导分子toll样受体2(tolllikereceptor2,TLR2)和核转录因子kappaB(NF-κB)P65的蛋白表达显著减少。结论3种合成脂肽均能诱导巨噬细胞产生IL-1β及IL-8。合成脂肽通过激活巨噬细胞膜表面CD14受体分子,活化下游信号通路,从而诱导细胞因子产生。合成脂肽能够诱导巨噬细胞模型产生免疫耐受,其可能机制为通过TLR2激活下游NF-κB信号通路,减少炎性细胞因子产生。
简介:念珠菌为引起皮肤黏膜和系统性感染的常见机会性致病真菌,近年来宿主抗念珠菌感染免疫研究取得了长足进展。本文对念珠菌相关的固有免疫和适应性免疫反应研究进展进行介绍。前者包括主要模式识别受体Toll样受体(TLR2,4,9等)、C型凝集素受体(CLRs,包括Dectin-1,2,3,Mincle,DC-SIGN,DC-SIGN等)、核苷酸结合寡聚化结构域(NOD)蛋白样受体(NLRs,包括NLRP3和NLRC4等),与念珠菌胞壁相应的病原体相关分子模式及其相关信号通路,在诱导固有免疫效应中的作用及机制以及相关基因突变导致的易感性。适应性免疫方面,主要包括Th17,Th1和Treg免疫反应的作用机制,及Th17免疫相关分子的基因突变与慢性皮肤黏膜念珠菌病易感性,并初步提出本领域的研究展望。