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HLA-DM基因多态性调查及其与HLA-DRB_1基因的连锁分析

The linkage analysis of HLA-DRB_1 and polymorphisms of HLA-DM gene
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摘要 目的:探讨贵州地区汉族人群HLA-DM基因多态性分布,并分析其与HLA-DRB1基因间是否存在连锁不平衡关系。方法:用多聚酶链反应限制性片段长度多态性技术分析106例贵州地区汉族正常人的HLA-DM基因型;同时用序列特异性引物PCR技术检测其HLA-DRB1基因型。结果:贵州地区汉族人群中DMA*0101~0103等位基因频率分布依次为0.745、0.231和0.024,DMA基因型0101/0101和0101/0102频率分布较高者(分别为0.547和0.349);DMB*0101~0104等位基因频率分布依次为0.547、0.165、0.217和0.071,DMB基因型频率分布较高者依次为0101/0101、0101/0102和0101/0103(频率分别为0.311、0.208和0.189);DMA*0102与DRB1*08及DMA*0102与DRB1*12之间连锁不平衡参数分别为2.09和5.07。结论:贵州地区汉族人群中HLA-DM等位基因频率分布以HLA-DMA*0101~0102、HLA-DMB*0101~0103为主,DM基因型分布以DMA*0101/0101、0101/0102和DMB*0101/0101、0101/0102、0101/0103为主;贵州地区汉族人群中HLA-DM基因与HLA-DRB1基因之间存在连锁不平衡关系。 Objective:To investigate the genetic polymorphisms of HLA-DM genes and to examine whether HLA-DRB1 alleles are in linkage disequilibrium with it. Methods:The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was used to determine genetic polymorphisms of HLA-DMA/DMB in 106 unrelated healthy Han population from Guizhou province. HLA-DRB1 allele types were examined by using PCR-SSP (polymerase chain reaction-sequence specific primers). Results: The frequencies of DMA0101, DM...
出处 《陕西医学杂志》 CAS 北大核心 2008年第9期1231-1234,共4页 Shaanxi Medical Journal
基金 贵州省高层次人才科研条件特助经费资助项目(No030516) 贵阳医学院博士科研启动基金
关键词 基因 HLA-DM 多态现象 连锁不平衡 Gene HLA-DM Polymorphism Linkage disequilibrium
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