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类风湿关节炎患者外周血和关节液中T淋巴细胞亚型和T细胞共刺激分子CD28的表达和临床意义 被引量:6

Expression of CD28 and T lymphocyte subgroup in peripheral blood and synovial fluid of patients with rheumatoid arthritis
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摘要 目的:探讨T细胞共刺激分子CD28在类风湿关节炎(RA)患者外周血和关节液中的表达和意义,同时比较T淋巴细胞亚群CD4、CD8在类风湿关节炎患者外周血和关节液中的表达和意义。方法:选取RA患者45例,平均年龄(47.57±16.43)岁,平均病程(5.84±7.19)年,男性9例,女性36例。取新鲜抗凝外周血细胞(PBMC)应用流式细胞仪进行检测。其中15例有膝关节液者同时抽取关节液单个核细胞(SFMC)行同样检测。与RA年龄和性别匹配的正常体检者54例作为对照。检测CD4、CD8、CD28、CD19(B淋巴细胞)的百分比以及CD4+和CD8+细胞分别表达CD28+的百分比。结果:类风湿关节炎外周血CD4+百分率较正常对照明显升高(P<0.01),但较关节液均明显降低(P<0.05);外周血CD8+百分率与正常对照无显著差别,而关节液细胞中CD8+百分率较外周血显著升高(P<0.01)。CD28+百分比在关节滑液细胞中较血细胞中有明显增高(P<0.01)。CD4+CD28+/CD4+百分比在类风湿关节炎患者血细胞、关节液细胞与正常对照组均无差别。CD8+CD28+/CD8+百分比在类风湿关节炎关节滑液中较血细胞中有明显增高,二者相差非常显著(P<0.01)。结论:类风湿关节炎患者外周血和关节液中T淋巴细胞亚型和T细胞共刺激分子CD28的表达异常,可能是参与RA发病和病情发展的重要机制之一。
出处 《第二军医大学学报》 CAS CSCD 北大核心 2009年第1期98-100,共3页 Academic Journal of Second Military Medical University
基金 上海市卫生局科研课题(2006071) 国家"863"高技术研究发展计划(2002AA214091) 上海市科委自然科学基金(03ZR14026)~~
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参考文献10

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