血清抗肽酰基精氨酸脱亚氨酶4抗体检测在类风湿关节炎诊断中的意义

目的比较类风湿关节炎(rheumatoid arthritis,RA)患者血清中抗肽酰基精氨酸脱亚氨酶4(PADI4)抗体水平和其它风湿病组及正常对照组间的差异,以评估其在RA诊断中的价值。方法采用酶联免疫吸附法(enzyme-linked immunosorbentassay,ELISA)检测患者血清中抗PADI4抗体水平,并研究其与RA患者DAS28评分、抗CCP抗体、抗角蛋白抗体(anti-keratinantibody,AKA)、类风湿因子(rheumatoid factor,RF)等指标的相关性。结果RA患者血清中抗PADI4抗体阳性率为47%,明显高于其它风湿性疾病患者和健康对照组(P<0.05)。抗PADI4抗体对RA诊断的敏感性为43%,特异性为92%。相关性分析显示抗PADI4抗体水平与DAS28评分、抗CCP抗体无相关性(r=-0.025,P=0.82;r=-0.058,P=0.60)。RF阴性患者PADI4抗体阳性50%;AKA阴性的患者PADI4抗体阳性43%;抗CCP抗体阴性的患者抗PADI4抗体阳性60%。结论RA患者血清中抗PADI4抗体有较高的诊断价值,特别有助于RF、抗CCP...

The significance of serum anti-peptidylarginine deiminase 4 antibodies in the diagnosis of rheumatoid arthritis

To assess the value of serum anti-peptide arginine-deiminase enzyme 4(PADI4) antibodies in the diagnosis of RA, we analyzed the serum anti- PADI4 antibody levels in rheumatoid arthritis(RA) group,other rheumatic group,and the healthy control group.Enzyme-linked immunosorbent assay(ELISA) was used to detect anti-PADI4 antibody levels,and illustrated that he prevalence of anti-PADI4 antibody in RA patients(47%) was significantly higher than in other rheumatic diseases and healthy controls(P<0.05). By analyzin...