Neurology:脑淀粉样病变负担与认知表现和血管风险因素

2017-12-26 zhangfan MedSci原创

研究认为,脑11C-匹兹堡化合物B PET显像呈阳性的参与者,部分痴呆风指标险增加,这表明早期大脑淀粉样蛋白积累与执行功能下降相关,APOE ε4等位基因阳性与淀粉样病变阳性相关

对于心血管危险因素、年龄和痴呆风险(CAIDE)评分高于6分的患者可定义为痴呆风险人群,其存在显著的脑淀粉样病变。近日研究人员考察了脑淀粉样病变负担与认知表现和血管风险因素之间的关系。

48名FINGER研究参与者,基线时接受脑11C-匹兹堡化合物B(PIB)PET显像,脑MRI和神经心理学评估,通过体重、血压、总的以及低密度胆固醇脂蛋白以及葡萄糖稳态模型评估参与者的生活习惯以及血管风险因素。脑白质病变使用半定量Fazekas评分检测。

20名参与者(42%) PiB-PET阳性,阳性亚组患者执行功能测试得分较差,且ApoEε4等位基因阳性率增加(50%)、葡萄糖稳态增加。PiB状态与其他认知评分以及血管风险因素无关,组间Fazekas得分无显著差异。

研究认为,脑11C-匹兹堡化合物B PET显像呈阳性的参与者,部分痴呆风指标险增加,这表明早期大脑淀粉样蛋白积累与执行功能下降相关,APOE ε4等位基因阳性与淀粉样病变阳性相关。

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    2018-07-14 yinhl1978