Eur Heart J:血管危险因素与脑MRI指数之间的关联

2019-03-11 xing.T 网络

由此可见,较高水平的VRF与灰质和白质宏观结构和微观结构中较差的脑健康相关。效果主要是累加性的,会聚在额叶和颞叶皮质、皮质下结构和特定类别的白质纤维上。虽然效应大小很小,但这些结果强调了即使在相对健康的中年和老年人中大脑健康对血管因素的易感性,以及通过解决这些可塑的危险因素来部分改善认知能力下降的可能性。

有几个已知的因素会增加脑血管疾病和痴呆的风险,但是在大型中老年人群中多个血管危险因素(VRFs)与脑组织和微观结构之间相关性的证据十分有限。

近日,心血管领域权威杂志Eur Heart J上发表了一篇研究文章,在英国生物库(n=9722,年龄范围为44-79岁)中评估了VRF(吸烟、高血压、脉压、糖尿病、高胆固醇血症、体重指数和腰臀比)与脑结构和扩散MRI标记之间的关联。

大量VRF与更大的脑萎缩、更低的灰质体积和更差的白质健康有关。效应大小很小(脑结构R2≤1.8%)。较高的聚集血管风险与痴呆风险相关的多个区域MRI标志相关:较低的额叶和颞叶皮质体积,较低的皮质下体积,较高的白质高信号体积和较差的白质微观结构和丘脑通路。吸烟包年、高血压糖尿病在所有大脑指标中表现出最一致的联系。高胆固醇血症与任何MRI标记无关。

由此可见,较高水平的VRF与灰质和白质宏观结构和微观结构中较差的脑健康相关。效果主要是累加性的,会聚在额叶和颞叶皮质、皮质下结构和特定类别的白质纤维上。虽然效应大小很小,但这些结果强调了即使在相对健康的中年和老年人中大脑健康对血管因素的易感性,以及通过解决这些可塑的危险因素来部分改善认知能力下降的可能性。

原始出处:


Simon R Cox.et al.Associations between vascular risk factors and brain MRI indices in UK Biobank.Eur Heart J.https://doi.org/10.1093/eurheartj/ehz100

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    2019-06-01 一天没事干

    很好的学习机会

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    2019-04-16 一天没事干

    很好的学习机会

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    2019-04-08 一天没事干

    很好的学习机会

    0

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    2019-03-13 zhaojie88
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    2019-03-13 slcumt

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