JAMA Neurol:无临床症状患者脑淀粉样蛋白升高因素研究

2020-04-07 MedSci原创 MedSci原创

家族老年痴呆史及APOEε4等位基因是最重要的脑淀粉样蛋白升高因素

在A4研究中,研究人员针对临床正常,但存在脑淀粉样蛋白升高迹象的老年人,通过淀粉样正电子发射断层成像(PET)和标准化评估筛选对与脑淀粉样蛋白升高相关的因素进行研究。近日研究人员探讨了与淀粉样蛋白升高相关的人口统计学、生活方式因素、载脂蛋白E(APOE)、神经心理学测试以及自我和研究伙伴认知功能报告之间的关系。
 
这项横断面研究包括2014年4月至2017年12月收集的无症状阿尔茨海默病抗淀粉样蛋白治疗的筛选数据,并按淀粉样蛋白状态分类,包括4486名符合淀粉样PET(临床正常[临床痴呆评分=0]和认知正常[最小精神状态检查分数,≥25;逻辑记忆IIa 6-18])的老年人(65-85岁)。研究筛选人口统计学、生活方式变量、APOE基因分型、认知测试(临床前阿尔茨海默病认知复合评估)、自我和学习伙伴报告的日常认知功能(认知功能指数)。采用Florbetapir淀粉样蛋白PET显像将参与者分为淀粉样蛋白升高(Aβ+)或淀粉样蛋白未升高(Aβ-)患者。
 
4486名参与者(平均年龄71.29岁,女性占59%),1323名(29.5%)被归类为Aβ+。Aβ+参与者的年龄略大于Aβ-,在性别、教育、婚姻或退休状况或任何自我报告的生活方式因素方面没有观察到差异。Aβ+参与者更有可能有痴呆家族史(Aβ+患者3320例 [74%]vs Aβ-患者3050例 [68%])和至少1个APOEε4等位基因突变(Aβ+患者2602例 [58%]vs Aβ-患者1122例 [25%])。Aβ+参与者在筛选临床前阿尔茨海默病认知综合评估结果方面表现较差,且认知功能指数变化更显著。
 
研究认为,家族老年痴呆史及APOEε4等位基因是最重要的脑淀粉样蛋白升高因素。
 
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    2020-12-24 yinhl1978
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    2020-04-07 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

    0

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