抗心磷脂抗体与系统性红斑狼疮患者病情活动性的相关性研究

为探讨系统性红斑狼疮(systemic lupus erythematosus, SLE)患者血清抗心磷脂抗体的阳性率及其与患者病情活动性关系,用酶联免疫吸附法的ACAIg含量测定药盒(ELISA)对87例SLE患者血清ACAIg含量进行了测定.结果:全组患者的 ACAIgG、A CAIgA和ACAIgM 阳性率分别为62.1%、52.9%和35.6% .ACAIgG、ACAIgM 测定值与代表SLE 活动性的病情积分呈正相关(r=0.2763,P=0.044;r=0.3294,P=0.018).AC AIgG 、ACAIgA、ACAIgM与补体C3呈负相关(r=-0.4737,P=0.000;r=-0.2990,P =0.017;r=-0.2758,P=0.029);ACAIgG与补体C4呈负相关(r=-0.40 79,P=0.005).并发血栓时,ACAIgA增高.并发狼疮脑病时,A CAIgG、ACAIgM 测定值的变化较无此并发症者明显增高.由此表明 ACA测定值的变化可以客观反映SLE患者的病情活动性.并发血栓时,ACAIgA增高.并发狼疮脑病时,ACAIgG、ACAIgM 测定值增高.

The Correlation between Anticardiolipin Antibodies and Disease Activity in Patients with Systemic Lupus Erythematosus

This study was conducted to determine the prevalence and clinical association of anticardiolipin antibodies (ACA) in serum of patients with systemic lupus erythematosus (SLE). ACA (IgG, IgA, IgM) was measured by enzyme-linked immunosorbent assay (ELISA) in the serum sample of 87 patients of SLE. The prevalence rates of ACAIgG, ACAIgA and ACAIgM were 62. 1 %, 52. 9% and 35. 6% respectively. The titers of ACAIgG and ACAIgM were positively correlated with the disease activity (r=0. 2763, P= 0. 0441 r= 0. 3294, P=0. 018); ACAIgG, ACAIgA and ACAIgM were negatively correlated with complement C3 (r= -0. 4737, P=0. 000,r = - 0. 2990, P = 0. 017 ; r = - 0. 2758, P =0. 029); and ACAIgG was negatively correlated with complement C4 (r= - 0.4079, P= 0. 005). The titers of ACAIgA in patients with thrombosis was higher than that in patients without thrombosis. The patients with central nervous system involvement (CNS-SLE) had significantly higher ACAIgG and ACAIgM titers, compared with those without CNS-SLE. The results indicate there is a correlation between ACA titers and disease activity. In patients with thrombosis, the titer of ACAIgA is higher, and in patients with CNS-SLE, the titers of ACAIgG and ACAIgM are higher.