摘要
背景:微管相关蛋白tau (MAPT)和血浆tau蛋白对认知的影响尚未引起足够的重视。 目的:在中国农村共招募了3072人。向他们提供调查问卷,并采集血样。 方法:采用MMSE评分将人群分为认知障碍组和对照组。首先,采用logistic回归分析,探讨影响认知功能的可能因素。其次,采用分层抽样的方法,选取1837个样本进行SNP检测。第三,选取288个样本检测三种血浆生物标志物(Tau、磷酸化Tau和Aβ-42)。 结果:对于MAPT rs242557, AG基因型的人比AA基因型的人发生认知障碍的可能性高1.32倍,GG基因型的人比AG基因型的人发生认知障碍的可能性高1.47倍。G携带者的血浆Tau蛋白浓度也升高(P = 0.020)。血浆Tau蛋白与MMSE评分呈负相关(P = 0.004)。 结论:MAPT rs242557 (A >g)的突变增加了认知功能障碍的风险和血浆Tau蛋白的浓度。
关键词: 微管相关蛋白Tau,认知障碍,血浆Tau,基因多态性,中国农村,阿尔茨海默病
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