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HLA |
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刘巧红 滕云 沈凌汛
【摘 要】 目的 探讨人类白细胞抗原(HLA)-DR基因编码的共同表位(SE)与武汉籍汉族类风湿关节炎(RA)的相关性。方法 采用聚合酶链反应-序列特异性引物技术(PCR-SSP),对武汉籍汉族人群78例RA患者和126例健康者的HLA-DRB1*01、*04基因型进行检测。结果 RA患者中具有编码QKRAA或QRRAA的共同表位阳性率为43.6%,明显高于正常对照组(15.1%,P0.01);SE阳性的RA患者的关节压痛数、侵蚀性病变以及关节外表现明显高于SE阴性的RA患者(P0.01)。结论 HLA-DR基因编码的SE与武汉籍汉族RA易感性及疾病严重性相关,共同表位的检测可作为一项病情及预后判断的指标。 【关键词】 关节炎,类风湿; 抗原决定簇; HLA-DR抗原; 聚合酶链反应-序列特异性引物
Relation between shared epitope of HLA-DR antigen β chain and rheumatoid arthritis
LIU Qiaohong,TENG Yun,SHEN Lingxun (Department of Rheumatology,Union Hospital,Tongji Medical University,Wuhan 430022,China)
【Abstract】 Objective To explore the association between expression of HLA-DR antigen shared epitope (SE) and rheumatoid arthritis (RA) in Han nationality in Wuhan of China.Method The method of DNA amplification with sequence-specific primers (PCR-SSP) was used to dertermine HLA-DRB101,04 genotype in 78 patients with RA and 126 healthy controls in Han nationality from Wuhan.Results There was a significant increase in the presence of amino acid sequence QKRAA of QRRAA both in RA patients overall compared with healthy group (43.6% vs 15.1%,P0.01).RA patients with SE were more severe in tender joint numbers,radiological severity and extraarticular disease than those with SE negative.Conclusion The results suggest that strong association between SE of HLA-DR antigen and susceptibility and severity to RA in Han nationality in Wuhan,and SE may be a useful marker for disease severity and prognosis in the patients with RA. 【Key words】 Arthritis,rheumatoid; Antigenic determinants; HLA-DR antigens; PCR-sequence-specific primers
类风湿关节炎(RA)作为自身免疫性疾病至今病因不明,国内外研究表明,人类白细胞抗原(HLA)DR抗原β链第70~74位氨基酸残基的多态性与RA的易感性有密切的关系,凡是在该段位置上的氨基酸序列为QKRAA、QRRAA或RRRAA的个体,都表现出对RA的易感性增高[1,2]。但不同种族,不同地理环境中,HLA-DRB1基因型的构成差异较大[3]。为探讨这些共同表位(shared epitope, SE)与RA易感性及疾病严重性的相关性,我们对武汉籍汉族的RA患者和健康人群的HLA-DR1和HLA-DR4进行基因分析。
1 资料与方法
[1] [2] [3] 下一页 上一个医学论文: 抗 型胶原抗体的检测及其在类风湿关节炎中的意义 下一个医学论文: 系统性红斑狼疮的心脏瓣膜病变
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