类风湿关节炎患者血清抗EB病毒抗体的临床研究

目的研究ＥＢ病毒感染与类风湿关节炎的临床关系。方法以Ｂ９５－８细胞为抗原底物,用间接免疫荧光法检测血清中抗ＩｇＡＥＢ病毒壳抗原抗体（抗ＩｇＡ／ＶＣＡ抗体）。以免疫印迹法检测血清中抗ＩｇＧＥＢ病毒Ｚ蛋白抗体（抗ＩｇＧ／Ｚ抗体）。结果类风湿关节炎患者血清中抗ＩｇＧ／ＶＣＡ抗体阳性率２１．９％,明显高于正常人及其他风湿病患者。抗ＩｇＧ／Ｚ抗体仅在抗ＩｇＡ／ＶＣＡ抗体阳性时出现。结论抗ＩｇＡ／ＶＣＡ抗体的检测对类风湿关节炎的诊断有一定临床意义。类风湿关节炎患者体内的ＥＢ病毒可能处于激活状态。

Clinical study on antibodies against EBV in sera of patients with rheumatoid arthritis

Objective Study on the relationship between the infection of Epstein Barr virus (EBV) and the pathogenesis of rheumatoid arthritis (RA). Methods The IgA and IgG antibodies against EBV capsid antigen (IgA/VCA and IgG/VCA respectively),and anti Z protein IgG antibodies (IgG/Z) in the sera from the patients with RA, systemic lupus erythematosus (SLE),and normal controls were detected by using indirect immunofluoresence and immunobloting techniques. Results The positive rate of IgA/VCA antibody in the serum of RA patients which was significantly higher than that in SLE patients and normal subjects. The anti IgG/Z antibodies were only found in RA patients with IgA/VCA antibody.Conclusions The results suggested that activated EB virus may play a role in the pathogenesis of RA. It is a useful laboratory method for the clinical diagnosis of RA.