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Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment
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功能/结构连接和中风之间的因果关系:双向的门德尔随机化研究.

Yisong Wang1, Longtao Yang1, Jun Liu1,2,3

  • 1Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha 410011, China.

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概括
此摘要是机器生成的。

遗传分析显示,大脑网络中功能和结构连接的改变因果关系影响中风风险. 一些网络的连接性较低会增加中风风险,而另一些网络则表现出复杂的双向关系.

关键词:
门德尔的随机化功能网络连接性的功能网络连接.休息状态的休息状态.一次性中风中风中风中风中风

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 流行病学 流行病学

背景情况:

  • 大脑休息状态网络 (RSN) 的破坏与中风有关,但在流行病学研究中很难确定因果关系.
  • 遗传变异为RSN内部的功能连接 (FC) 和结构连接 (SC) 提供了洞察力.

研究的目的:

  • 使用孟德尔随机化研究7个RSN内的FC/SC与中风风险之间的因果关系.
  • 探索RSN连接和中风亚型之间的双向因果关系.

主要方法:

  • 两个样本双向门德尔随机化 (MR) 研究.
  • 利用了RSN的全基因组关联研究 (GWAS) 数据 (N=24,336) 和MEGASTROKE中风数据 (N=520,000).
  • 分析了与中风及其亚型相关的7个RSN内的FC和SC.

主要成果:

  • 较低的全球平均FC和边缘网络FC分别与任何缺血性中风和小血管中风的风险较高相关.
  • 腹腔注意网络FC和默认模式网络SC与小血管中风和大动脉中风风险有关.
  • 反向MR显示,中风与背部注意力网络FC和体运动网络FC有因果关系.

结论:

  • 提供了RSN FC/SC对中风亚型的对比因果影响的遗传证据.
  • 表明RSN中风后的损伤和补偿过程的结合.
  • 强调需要进行进一步的研究来验证发现并阐明生理机制.