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Neurology:近50%的70岁人群脑AD标志物呈阳性

2018-04-18 zhangfan MedSci原创

研究发现70岁以上人群的阿尔兹海默病理标志物阳性率高达46%

近日研究人员在瑞典哥德堡70岁老人人群中开展研究,依据现行脑脊液检查分类系统对临床前阿尔茨海默病的发病率进行研究。

322名70岁老人参与研究,参与者接受综合神经精神、认知和躯体检查。考察脑脊液中Aβ42, Aβ40,总tau蛋白以及磷酸化tau蛋白水平。临床前AD的诊断依据A/T/N系统、Dubois 2016、国家老龄问题研究所--阿尔茨海默病协会分类(NIA-AA)以及国际工作组-2分类(IWG-2)。

参与人群中,淀粉样病变率为22.8%、tau蛋白病变率为33.2%、磷酸化tau蛋白病变率为6.9%。依据A/T/N系统,A+/T-/N-患病率为13.1%、A+/T-/N+患病率为7.3%、 A+/T+/N+患病率为2.3%、 A-/T-/N+患病率为18.9% 、A-/T+/N+患病率为4.6%;依据Dubois标准,无症状AD患者占36.7%,临床前AD占9.7%;依据NIA-AA系统,1期患者比例为13.1%,2期为9.7%;依据IWG-2标准,无症状AD患病率为9.7%。APOE4等位基因携带者与多个分类病理阳性相关。男性人群总tau蛋白病变、A+/T-/N+比例、Dubois 2016临床前AD、IWG-2 AD风险以及NIA-AA2期的比例较高。

研究发现70岁以上人群的阿尔兹海默病理标志物阳性率高达46%。

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    2018-05-08 1e145228m78(暂无匿称)

    学习了.谢谢作者分享!

    0

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    2018-04-19 1ddf0692m34(暂无匿称)

    学习了.谢谢分享

    0

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