简介:Objective:TostudythecellularimmunityfunctionofpatientswithearlysyphilisandtheeffectsonimmunemodifiersEsberitoxNorIFN.Methods:T-lymphocytesubpopulationsoftheperipheralbloodin44patientswithsyphilisand40healthycontrolswereexaminedbyflowcytometry.Results:ThenumberofCD4+cellsandtheCD4+/CD8+ratioinpatientswithsyphiliswerefoundtobesignificantlylowerthanthoseinthecontrol(P<0.01),whilethenumberofCD8+cellswashigherthanthatinthecontrol(P<0.01).TheCD4+/CD8+ratiointhosewithactivediseasewaslowerthanthatinthosewhohadbeencured(P<0.05).TheCD4+countandtheCD4+/CD8+ratiointhosetreatedwithantibioticsalone(PenicillinGorCephalosporins)werelowerthanthosetreatedwithbothantibioticsandimmunomodulators(P<0.05).Conclusions:Cellularimmunityinthepatientswithearlysyphiliswasprominentlysuppressed,andtreatmentwithimmunomodulatorsmaybehelpfulfortherecoveryofcellularimmunityofthesepatients.
简介:成人T细胞性白血病/淋巴瘤(ATLL)是一种成熟辅助性T淋巴细胞恶性增殖性疾病,由人T淋巴细胞病毒-Ⅰ(HTLV-Ⅰ)感染所致。HTLV-Ⅰ感染流行于加勒比海地区、日本西南部、美洲南部及非洲。血清流行病学调查显示HTLV-Ⅰ感染亦流行于巴西。尽管HTLV-Ⅰ携带者显示病毒在T淋巴细胞内的整合呈多克隆性,但ATLL的各亚型患者显示病毒在肿瘤细胞内的整合为单克隆性。皮肤T细胞淋巴瘤(CTCL)是一组原发于皮肤的淋巴细胞增生性疾病,病因不明。最常见的两种表现为蕈样肉芽肿病(MF)和Sézary综合征(SS)。这两型CTCL的表现均与ATLL相似。因ATLL与CTCL的预后及治疗有根本不同,故在HTLV-Ⅰ流行地区必须严格区分这两种疾病。
简介:Objective:ThisstudyanalyzedtheTlymphocytesandThl/Th2typecytokineprofileshiftintheperipheralbloodofpatientswithrecurrentgenitalherpes(RGH).Methods:Immunofluorescentstainingofcellsurfaceantigenandintracellularcytokines(IL-2,IL-4,IL-12,IFN-r)inperipheralbloodfrom20RGHpatientsand10controlswereanalyzedusingflowcytometrictechniques.Results:RGHpatientshadsignificantlylowerlevelsofCD3^+Tcells,CD4^+TcellsandCD4^+T/CD8^+Tcellsratiocomparedtocontrollevels(P<0.001),andIL-2-producing,IFN-r-producingandIL-12-producingTcellswereincreasedinRGHpatients(CD4^+T:P<0.001,CD8^+T:P<0.05respectively),whereasIL-4-producingTcellswereincreasedinRGHpatientscomparedtocontrols(CD4+T:P<0.05;CDS^+T:P<0.001respectively).Conclusions:RGHpatientshaveTlymphocytesubsetvariationsandThl/Th2cytokinechanges.TheincreaseinTh2cellsThl/Th2imbalancemayhaveimportantimplicationsforRGHpathogenesis.
简介:Objective:TostudytheexpressionofFasandBcl-2proteinsonTlymphocytesubsetsintheperipheralbloodofrelapsingpatientswithcondylomaacuminatum(CA)andhealthycontrols.Methods:Flowcytometry(permeabizationandstainingprocedurewithconjugatedantibodies)wasused.Results:WeobservedthattheexpressionofFasproteinonCD4^+TlymphocytesubsetofCApatientswassignificantlyhigherthanthatofhealthycontrols(P<0.01).Conclusions:IncreasedexpressionofFasproteinonCD4^+Tlymphocytesubsetmaybeacauseofde-creasedpercentageofCD4^+Tlymphocytesubset.ThisinducestheincreasedratioofCD4^+/CD8^+.
简介:0引言调节性T细胞(Treg)即抑制性T细胞,具有免疫调节作用,使机体保持保护性免疫又不发生病理性免疫。效应性T细胞对免疫反应的启动和Treg对免疫反应的下调之间的失衡可导致皮肤慢性炎症或自身免疫。虽然在20世纪70年代就已描述了抑制性T细胞,但由于缺乏识别的标记,对此亚群的认识未有进展。20世纪90年代Sakaguchi等首先描述了一种天然存在于小鼠的表达CD25的CD4·T细胞。动物研究揭示此亚群细胞能抑制抗肿瘤免疫,预防多种自身免疫疾病,包括炎症性肠病和自身免疫糖尿病,并能诱导对皮肤同种移植物的耐受。其后,在人类也描述了此亚群。积累的证据提示这些细胞可能在多种皮肤病中起作用。
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:目的:探究CIN或宫颈癌患者阴道菌群、宫颈局部T细胞亚群以及血清炎性因子的组成,为宫颈癌的防治提供新的思路。方法:选取2013年8月至2015年7月我院收治的HPV阳性且病理活检确诊为CIN或宫颈癌的患者200例作为观察组,同时选取HPV阴性且宫颈活检正常者120例作为对照组。两组患者均于初诊时留取阴道分泌物、宫颈分泌物及脱落细胞、宫颈组织标本,采用液基薄层细胞学检查法(TCT)检测宫颈病变程度,采用悬滴湿片法检测滴虫,革兰氏染色检测霉菌、淋球菌和乳酸杆菌等;采用免疫组化法检测宫颈CD4^+和CD8^+T淋巴细胞的表达;采用酶联免疫吸附法(ELISA)检测血清炎性因子IL-2、IL-4、IL-10、IFN-γ和TNF-α。结果:两组患者在解脲支原体、衣原体的感染率以及乳酸杆菌的阴性感染率之间差异具有统计学意义(P〈0.05),且随着病变程度的加重,其感染率也存在明显差异,而其它病原体感染在两组间无统计学差异(P〉0.05);在对照组、CINⅠ-CINⅢ以及宫颈癌患者的宫颈分泌物中CD4^+T细胞表达率呈下降趋势,而CD8^+T细胞表达率无明显差异(P〉0.05),但CD4^+/CD8^+的比值呈下降趋势;在对照组、CINⅠ-CINⅢ及宫颈癌患者的血清IFN-γ和IL-2水平呈下降趋势,IL-4的含量呈上升趋势,而TNF-α和IL-10的含量无明显差别(P〉0.05)。结论:解脲支原体、衣原体感染的增加、乳酸杆菌的减少、CD4^+T细胞表达减少可能促进宫颈病变的发生发展。
简介:目的通过对尖锐湿疣(CA)患者外周血T淋巴细胞亚群及胞内细胞因子分泌水平的研究,探讨尖锐湿疣可能的免疫机制。方法采用三色和双色荧光抗体染色技术经流式细胞仪检测20例CA患者外周血T淋巴细胞亚群及CD4T细胞、CDS8~-T细胞内IL-2、IL-4、IL-12、IFN-γ染色阳性细胞百分率。结果CA患者CD3~-T细胞、CD4~+T细胞、CD4~+/CD8~+比值明显低于正常对照组(P