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在绝经后的女性中,DXA测量了腹部脂肪沉积和大脑结构完整性

Zeinah Al-Darsani^1,2, Hailey R Banack³, Mallory N Ziegler⁴

¹Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA.

Alzheimer disease and associated disorders

|August 12, 2024

概括

更高的体脂水平,包括腹部内脏和皮下脂肪,与更大的海马体积有关,在绝经后的妇女. 需要进一步的研究来证实这些关于大脑健康的发现.

科学领域:

神经影像学和老年学
代谢健康和大脑衰老

背景情况:

之前的研究将身体质量指数 (BMI) 与减少的大脑缩和缺血病变联系起来.
这项研究调查了超出BMI的详细体质成分指标.

研究的目的:

为了检查各种衡量脂肪和大脑结构之间的关联.
用双能X射线吸收计 (DXA) 扩展BMI和大脑健康的先前发现.

主要方法:

来自WHIMS-MRI研究的61名绝经后妇女的分析.
DXA扫描评估了多个时间点的总体脂肪,腹部内脏脂肪组织 (VAT),皮下脂肪组织 (SAT),骨和腿部脂肪.
线性回归模型分析了来自MRI扫描的大脑区域体积的关联.

主要成果:

增加的总体脂肪,总腹部脂肪组织 (TAT),VAT,SAT,骨头和腿部脂肪与较大的海马体积有关.
具体的关联被量化,增值税显示出显著的积极关系 (β 0.26).

结论:

较高的脂肪水平与海马体积正相关.
建议对更大的队列进行进一步的研究,以验证这些关联及其临床影响.

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