类风湿性关节炎患者血清抗Sa抗体检测及临床意义 (基金项目)
王昶 王建东 曾常茜 2005-12-13 13:07:17 中华中西医杂志 2004年2月第5卷第3期 【摘要】 目的 检测类风湿性关节炎(RA)患者血清抗Sa抗体,并证明抗Sa抗体对RA的诊断意义。方法 采用Western-blot方法。结果 抗Sa抗体诊断RA的敏感度为42.7%,特异度为100%,阳性确诊率为100%,阴性确诊率为71.1%。结论 血清抗Sa抗体对RA诊断的特异度和阳性确诊率均高于类风湿因子(RF),因此具有临床实用价值。 关键词 类风湿性关节炎抗Sa抗体 Western-blot方法 类风湿因子 Detection and clinical significances of anti-Sa antibody in RA serum Wang Chang,Wang Jiandong,Zeng Changqian Central Hospital of Jilin City,Jilin132011. 【Abstract】 Objective To detect anti-Sa antibody in rheumatoid arthritis(RA)serum and prove the signifiˉcances of seral anti-Sa antibody in diagnostic RA.Methods Western-blot method was used.Results The sensiˉtivity,specificity,PPV and NPVwere42.7%,100%,100%and71.1%respectively.Conclusion Diagnostic speciˉficity and PPV of seral anti-Sa antibody to RA patients were better than those of rheumatoid factor(RF)and it was practical clinically. Key words RA anti-Sa antibody western-blot method RF 类风湿性关节炎(Rheumatoid arthritis,RA)是最常见的自身免疫病,发病率1%~2% [1~3] 。RA患者血清中可以检测到多种自身抗体,如RF、AKA、APF、RA33抗体、HaT-1抗体等,这些抗体在RA患者血清的阳性率为5%~75%,但均缺乏特异性 [4~9] 。抗Sa抗体是新近发现的RA患者自身抗体 [10] 。我们从人胎盘中提取Sa抗原,建立了血清抗Sa抗体的Western-blot检测方法,并研究了血清抗Sa抗体对RA患者的诊断意义。现报告如下。
基金项目:吉林省卫生厅科学基金资助项目(编号:96037)