【摘要】 目的了解抗!2-糖蛋白Ⅰ抗体(抗!2-GPⅠ抗体)与系统性红斑狼疮(SLE)临床特点的关系及在其诊断中的价值。方法采用酶联免疫吸附试验(ELISA)检测112例SLE患者、40例类风湿关节炎(RA)患者、30例干燥综合征(SS)患者和40名正常人血清中的抗!2-GPⅠ抗体水平。同时,测定患者血清中的抗心磷脂抗体(ACL)等指标,并分析其与患者的临床特点(如:血栓、流产)的关系及其临床意义。统计学分析采用t检验、!2检验和Spearman检验。结果抗!2-GPⅠ抗体在SLE中敏感性为21.4%(24/112),特异性为88.6%,在RA和SS敏感性分别为15.0%(6/40)和6.7%(2/30),40名正常对照均为阴性。抗!2-GPⅠ抗体与血栓形成密切相关(P<0.01),与ACL-IgG和IgM型水平呈正相关(r=0.479,P=-0.032;r=0.400,P=0.045)。抗!2-GPⅠ抗体与其他临床及实验室指标无明显相关性。结论抗!2-GPⅠ抗体在SLE中具有一定的敏感性,且可能在SLE的血栓形成中发挥作用,联合检测ACL与抗!2-GPⅠ抗体能够辅助诊断SLE伴血栓形成。更多还原

【Abstract】 Objective To investigate the prevalence and significance of anti-β2-glycoprotein Ⅰ (anti-β2-GPⅠ) in patients with systemic lupus erythematosus (SLE). Methods Anti-β2-GPⅠ level was determined in 112 SLE patients, 40 patients with rheumatoid arthritis (RA), 30 patients with Sj?gren′s syndrome (SS) and 40 healthy individuals by enzyme-linked immunosorbent assay (ELISA). The laboratory and clinical features (thrombosis, fetal loss, etc) were analyzed retrospectively from the clinical database. Results Sensitivities of anti-β2-GPⅠ were 21.4%, 15.0%, 6.7% in SLE, RA and SS, respectively. The specificity of anti-β2-GPⅠ was 88.6% in SLE. Correlations between thrombosis and titers of ACL-IgG/IgM and anti-β2-GPⅠ were statistically significant. No association was found between anti-β2-GPⅠ and other clinical and laboratory features. Conclusion The results indicate that anti-β2-glycoprotein Ⅰ antibodies are common and may play a role in SLE with thrombosis. Combination of ACL and anti-β2-GPⅠ can facilitate the diagnosis of SLE with thrombosis.更多还原