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综合运用聚合酶链反应和限制性片段长度多态性技术解析儿茶酚氧位甲基转移酶基因多态性与阿尔茨海默病患者暴力行为之间的分子遗传学关联

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摘要 目的运用聚合酶链反应(PCR)和限制性片段长度多态性(RFLP)技术探究儿茶酚氧位甲基转移酶(COMT)基因多态性与阿尔茨海默病(AD)患者暴力行为之间的分子遗传学关联,为临床诊疗提供参考。方法选取2021年1月至2023年12月绍兴市第七人民医院收治的180例存在暴力行为的AD患者的临床资料(研究组),进行回顾性分析。另选取同期绍兴市第七人民医院收治的100例不存在暴力行为的AD患者作为对照组。通过PCR和RFLP技术,对两组患者COMT基因各多态性位点的基因型及等位基因频率进行统计分析。结果COMT基因的rs165599、rs6269和rs4680位点与AD患者暴力行为的发生风险存在显著相关性,其中rs165599、rs6269位点在校正混杂因素后仍关联显著(均P<0.05);rs4680位点校正后差异无统计学意义(P>0.05)。在载脂蛋白E(ApoE)ε4(+)亚组分析中,rs165599、rs4633、rs6269、rs4818等位点的基因型及等位基因分布在组间均存在差异,其中rs165599位点的TT、CC基因型基因频率差异更为显著(均P<0.05)。结论COMT基因多态性与AD患者暴力行为的发生密切相关,其中rs165599、rs6269位点为重要关联位点,且在ApoEε4(+)人群中这种关联更为显著,提示COMT基因多态性可能通过与ApoEε4的交互作用参与AD患者暴力行为的发生机制。
出处 《大医生》 2025年第16期79-83,共5页 Doctor
基金 绍兴市科技计划项目(编号:2022A14001,2022A14002)。
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