萨科佩尼亚相关特征对大脑皮质结构的因果关系:孟德尔的随机化研究
Shilong Su1, Ruideng Wang1, Zhengyang Chen1
1Department of Orthopedics, Peking University Third Hospital, No. 49 North Garden Road, Haidian 100191, Beijing, China; Engineering Research Center of Bone and Joint Precision Medicine, Peking University Third Hospital, No. 49 North Garden Road, Haidian 100191, Beijing, China.
Archives of gerontology and geriatrics
|December 6, 2023
概括
这项研究使用了门德尔的随机化来调查缩症特征之间的因果关系,比如尾肌肉质量 (ALM) 和手握力 (HGSR),以及大脑结构. 研究结果表明,这些肉症指标在遗传上影响大脑皮层表面积和厚度.
科学领域:
- 神经科学和衰老研究研究.
- 遗传学和流行病学学
- 萨尔科佩尼亚和大脑健康
背景情况:
- 观察性研究表明,sarcopenia影响大脑结构和功能.
- 以前的发现受到潜在的混和反向因果关系的限制.
- 萨尔科佩尼亚和大脑结构之间的因果关系需要进行严格的调查.
研究的目的:
- 为了确定与sarcopenia相关的特征对大脑皮质结构的因果关系.
- 使用孟德尔随机化 (MR) 进行强大的因果推理.
- 分析尾肌肉量 (ALM) 和手握力 (HGSR) 对大脑形态学的影响.
主要方法:
- 采用了双样本的孟德尔随机化 (MR) 分析.
- 萨科佩尼亚的特征包括尾肌肉质量 (ALM),左/右手握力 (HGSL/HGSR) 和通常的步行速度 (UWP).
- 大脑皮层表面积 (SA) 和厚度 (TH) 用MRI数据在全球和区域评估;反差加权 (IVW) 是主要的MRI方法.
主要成果:
- 全球分析显示,ALM和HGSR与大脑皮层表面积 (SA) 的增加显著相关.
- 区域分析显示,ALM影响了SA在25 gyri和TH在侧回.
- HGSR显著增加了中枢轨道前和前中心回旋中的SA;没有检测到质变异.
结论:
- 这是第一个在MR研究中证明了与肉症相关的特征与大脑皮层结构之间的因果关系的研究.
- 基因预测的萨尔科佩尼亚特征,特别是ALM和HGSR,因果关系影响大脑皮层结构.
- 研究结果强调了肌肉健康对于维持大脑形态学的重要性.
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