【摘要】 目的检测系统性红斑狼疮患者(SLE)外周血CD4+CD25+调节性T细胞、转化生长因子-β1(TGF-β1)浓度,探讨其与疾病活动性的关系。方法选择SLE患者76例,根据患者病情程度分为3组,其中稳定组17例,活动组33例,肾病组26例。同期选择24例健康体检者作为正常对照。采用流式细胞仪检测SLE患者外周血CD4+CD25+调节性T细胞群比率,用ELISA法检测血清中TGF-β1浓度。观察CD4+CD25+T细胞群、TGF-β1浓度与SLE患者疾病活动程度的关系。结果①活动期SLE患者外周血CD4+CD25+调节性T细胞群比率、TGF-β1浓度显著低于稳定期及正常对照组(P<0.01),疾病稳定期与正常对照组结果差异无统计学意义。②SLE并发肾病组外周血CD4+CD25+调节性T细胞群比例、TGF-β1浓度显著低于非肾病组(P<0.05)。结论 SLE患者外周血CD4+CD25+调节性T细胞群比率、TGF-β1浓度与SLE活动性关系密切,可能是导致疾病发生和病情发展的关键环节之一。更多还原

【Abstract】 Objective To study the percentage of peripheral blood CD4+CD25+ regulative T cells and serum level of TGF-β1 in patients with systemic lupus erythematosus(SLE) and to explore their relationship with activity of the disease.Methods The percentage of CD4 +CD25+ T cells in peripheral blood from patients with systemic lupus erythematosus(SLE) and normal controls was measured by flowcytometry.Serum level of TGF-β1 was detected by double antibody sandwich ELISA.Results Patients with active disease had statisitically lower levels of CD4+CD25+ T cells and TGF-β1 than those of normal controls and patients with non-active disease(P<0.01),whereas no significant difference could be found between patients with non-active disease and normal controls.SLE patients with nephropathy had significantly lower levels of CD4+CD25+T cells and TGF-β1 than those of patients without nephropathy(P<0101).Conclusion The decrease of percentage of peripheral blood CD4+CD25+T cells and serum level of TGF-β1 in patients with SLE is closely related with the activity of disease and complicated nephropathy.The decrease in percentage of blood CD4+CD25+T cells and serum level of TGF-β1 may play a crucial role in pathogenesis and progress of SLE.更多还原