云南人群系统性红斑狼疮与TNF微卫星基因座关系的研究

位于MHC内的肿瘤坏死因子（tomornecrosisfactor，TNF）基因区域有5个微卫星基因座a、b、c、d和e，本研究调查了中国云南汉族系统性红斑狼疮（systemiclupuserythematosus,SLE）与这几个微卫星基因座多态性的关系。本文用荧光标记引物和半自动基因扫描方法对云南地区97例SLE患者及79例健康对照者的这5个微卫星基因座进行了基因分型，结果发现，SLE患者的TNFa1（P=0.0206）,c2(P=0.0000)等位基因频率较正常人显著增高，而TNFa2(P=0.0163),c3(P=0.0065),c4(P=0.0012),d6(P=0.0448)等位基因频率则是正常对照较SLE患者高。同时我们还发现在这5个微卫星基因座中，与白种人比较中国人出现了尚未发现的新等位基因。Abstract：We have investigated TNF microsatellite polymorphism in SLE.A total of 97 Chinese Han SLE patients and 79 matched Chinese Han controls were studied in this study, TNF microsatellites a,b,c,d and e were typed using fluorescent labeled automated genescanning and genotyping.TNFa1（P=0.0206）,c2 (P=0.0000) allele frequencies were significantly increased in the SLE group comparing with controls,and TNF a2 (P=0.0163) c3(P=0.0065),c4(P=0.0012),d6(P=0.0448) allele frequencies were significantly increased in controls.Meanwhile,we found some new alleles in Chinese which are different form those in Caucasoids.

The Relation Between TNF Microsatellite Loci Polymorphism and Systemic Lupus Erythematosus in Yunnan People