Neurology:生活方式不仅促进大脑健康,还会改变大脑结构!

2021-09-29 MedSci原创 MedSci原创

全世界所有的痴呆症病例中,有相当一部分是由可改变的风险因素引起的。

观察性研究表明,全世界所有的痴呆症病例中,有相当一部分是由可改变的风险因素引起的。痴呆症风险评分可能有助于识别高危人群和监测治疗的依从性。

为了调查痴呆症风险评分,即生活方式促进大脑健康(LIBRA)指数,是否与普通人群的MRI标志物和认知功能/损害有关,来自马斯特里赫特大学流行病学以及荷兰马斯特里赫特大学医学中心的专家开展了相关研究,结果发表在Neurology杂志上。

研究人员从马斯特里赫特研究的观察性人口队列中使用了横断面数据,计算了LIBRA的加权复合得分(包括12个痴呆症风险和保护因素,如高血压、缺乏运动),得分越高表明痴呆症风险越高。白质、灰质和脑脊液的标准化体积(作为一般脑萎缩的代理)、白质超密度和脑小血管疾病的存在是由3T MRI得出的。

认知功能在3个领域进行测试:记忆、信息处理速度、执行功能和注意力。低于平均值1.5SD的数值被定义为认知功能障碍。使用多元回归分析和结构方程模型,对年龄、性别、教育、颅内容积和2型糖尿病进行调整。

参与者(n = 4,164;平均年龄59岁;49.7%为男性)的LIBRA分数较高(平均1.19,范围-2.7至9.2),表示痴呆风险较高,其白质高密集区的体积较高(β = 0.051),信息处理速度得分较低(β = -0.067),执行功能和注意力得分较低(β = -0.065)。只有男性发现LIBRA评分与灰质体积(β = -0.093)和CSF(β = 0.104)以及记忆(β = -0.054)之间存在关联。

LIBRA评分和MRI与认知

研究人员认为,基于健康和生活方式的较高痴呆风险与一般脑萎缩、脑血管病变和较差认知的标志物有关,表明LIBRA有意义地概括了个人生活方式相关的大脑健康。在个人层面上改善LIBRA因素可能会改善人群的大脑健康。生活方式相关的病理和认知的性别差异需要进一步探讨。

综上,较高的LIBRA分数与某些认知领域的较低分数和较高的认知障碍风险显著相关。

 

参考文献:

Associations of the Lifestyle for Brain Health Index With Structural Brain Changes and Cognition Results From the Maastricht Study. DOI: 10.1212/WNL.0000000000012572

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    2022-03-05 yinhl1978
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    2021-10-01 wmr116
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    2021-09-30 ms8000002063265250

    从现在开始预防痴呆

    0

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