刘祺 李剑鹏 毕敏
【摘要】 目的:探討BIN1基因单核苷酸多态性与中国福建东南部地区阿尔茨海默病(Alzheimers disease,AD)患者的关联性。方法:选取中国福建东南部地区AD患者110例(AD组)和正常对照人群123例(正常对照组),均提取其外周血DNA运用多重突变扩增系统检测载脂蛋白E(Apolipoprotein E,APOE)基因型,同时采用传统Sanger测序对BIN1基因单核苷酸多态位点rs7561528进行检测,分析不同基因型与AD的关联性。结果:两组在BIN1基因多态位点rs7561528的基因型频率(GG、AG、AA)和等位基因频率比较,差异均无统计学意义(P>0.05)。结论:BIN1基因多态位点rs7561528可能与中国福建东南部地区AD患者无明显关联性。
【关键词】 阿尔茨海默病; BIN1基因; 单核苷酸多态性; 中国福建东南部
【Abstract】 Objective:To investigate the relevance between the BIN1 gene and the patients with Alzheimers disease(AD) in Southeast Fujian province of China.Method:A total of 110 AD patients(AD group) and 123 normal controls(normal control group) in Southeast Fujian province of China were selected.The apolipoprotein E(APOE) genotype was determined by the multiplex amplification refractory mutation system polymerase chain reaction.Moreover,the single nucleotide polymorphism rs7561528 in BIN1 gene was detected by Sanger sequencing,and the correlation between different genotypes and AD was analyzed.Result:The genotype frequencies(GG,AG,AA) and allele frequencies at the BIN1 gene polymorphism site rs7561528 between two groups were compared,the differences were not statistically significant(P>0.05).Conclusion:There is no association between rs7561528 polimorphism in BIN1 gene and AD patients in southeast Fujian province of China.
【Key words】 Alzheimers disease; BIN1 gene; Single nucleotide polymorphism; Southeast Fujian province of China
First-authors address:First Affiliated Hospital of Xiamen University,Xiamen 361003,China
doi:10.3969/j.issn.1674-4985.2018.31.012
阿尔茨海默病(Alzheimers disease,AD)是痴呆最常见的类型,其临床表现为隐袭性起病、进行性、不可逆的记忆和认知功能障碍[1]。根据是否具有家族聚集性将AD分为家族性AD(Familial Alzheimers disease,FAD)和散发性AD(Sporadic Alzheimers disease,SAD),其中发病年龄>65岁的晚发型AD(Late onset Alzheimers disease,LOAD)占SAD发病的95%[2]。SAD的病因尚不明确,既往研究证实,载脂蛋白E(Apolipoprotein E,APOE)ε4等位基因与LOAD发病相关[3],携带APOE ε4杂合子可以增加LOAD风险3倍,携带APOE ε4纯合子则可增加LOAD风险15倍[4]。在既往大规模全基因组关联分析(Genome-wide association study,GWAS)研究中发现,BIN1基因、CR1基因、GLU基因、PICALM基因、CD2AP基因、SORL1基因也与LOAD致病具有相关性[5-7],他们是产生AD特征性病理改变神经原纤维缠结和神经炎性斑的重要危险因素。目前BIN1基因是仅次于APOE影响LOAD易感性的遗传因素,Lambert等[8]最早发现BIN1基因上多态位点rs7561528可能提高LOAD的发病风险,这个结果在多项高加索人群的独立研究和中国北方汉族AD人群中得到验证。本研究进一步探讨BIN1基因单核苷酸多态性与中国福建东南部地区AD患者是否具有关联性。现……