儿茶酚-O-甲基转移酶基因单核苷酸多态性位点与精神分裂症的关联研究

摘要

目的 探讨儿茶酚-O-甲基转移酶(catechol-O-methyl transferanse,COMT)基因8个单核苷酸多态性位点(single nRcleotide polymorphism,SNP)与粤东潮汕地区精神分裂症的关系.方法 应用聚合酶链式反应-聚丙烯酰胺凝胶芯片技术检测COMf基因的8个SNP位点(rs4680、rs4818、rsl65599、rs737865、rs2075507、rs6267、rs6269、rs4633)在粤东潮汕地区的279例精神分裂症患者和100名健康对照中的分布,并借助于plink软件对所得数据进行关联分析.结果 单个位点等位基因频率在两组间的分布差异无统计学意义;单倍型(G)-G-A-A[(rs4680)-rsl65599-rs2075507-rs6269]和单倍型A-A-C-(G)[rs2075507-rs6269-rs4633-(rs6267)]频率两组分布差异有统计学意义,精神分裂症组低于正常对照组,提示它们可能是精神分裂症的保护因素.结论 在中国粤东地区汉族人群中,COMT基因的8个SNP位点(rs4680、rs4818、rsl65599、rs737865、rs2075507、rs6267、rs6269、rs4633)与精神分裂症无关联性,其中的两个单倍型可能是精神分裂症的保护因素.但本研究不能排除COMT基因可能存在其他功能性变异位点与精神分裂症相关.%Objective To investigate the association between 8 polymorphisms in the catechol-O-methyl transferase gene (COMT) and schizophrenia in Yuedong-Chaoshan region of China. Methods Eight single nucleotide polymorphism (SNPs), namely rs4680, rs4818, rs165599, rs737865, rs2075507, rs6267,rs6269 and rs4633, in the COMT gene were genotyped in 279 schizophrenia patients and 100 healthy controls. Results There was no significant difference between any single SNP and schizophrenia.However, association might exist between haplotypes (G)-G-A-A [(rs4680) -rs165599-rs2075507-rs6269]and A-A-C-(G) [rs2075507-rs6269-rs4633-(rs6267)] and schizophrenia. Conclusion In the population of Yuedong region of China, the eight SNPs (rs4680, rs4818, rs165599, rs737865, rs2075507, rs6267,rs6269 and rs4633) in the COMT gene are unlikely to play a major role in the susceptibility to schizophrenia.There might be protective haplotypes in the COMT gene against schizophrenia.