异常的动态功能网络连接在2型糖尿病患者中
Wenjiao Lyu1,2, Ye Wu2,3, Haoming Huang1
1Department of Radiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China.
Cognitive neurodynamics
|November 16, 2023
概括
2型糖尿病 (T2DM) 改变了大脑连接的动态,影响了认知功能. 这项研究揭示了T2DM患者大脑状态和网络连接的变化,与认知评估得分相关.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 系统生物学 系统生物学
背景情况:
- 2型糖尿病 (T2DM) 越来越多地与认知障碍有关.
- 以前的研究集中在静态功能连接上,限制了对动态大脑变化的理解.
- 了解T2DM认知缺陷的神经生物学机制至关重要.
研究的目的:
- 研究T2DM患者大脑功能网络的动态变化.
- 描述时间变化的连接性质和反复出现的大脑状态.
- 探索这些动态变化与认知表现之间的关系.
主要方法:
- 使用组独立组件分析 (GICA) 和滑窗分析.
- 应用k-means聚类来识别重复的大脑状态.
- 分析了大脑状态的分数时间 (FT) 和平均停留时间 (MDT).
- 与蒙特利尔认知评估 (MoCA) 成绩相关联的网络连接指标.
主要成果:
- 在T2DM和对照组之间确定了FT和MDT的显著差异.
- 观察到MoCA分数和FT/MDT之间的负相关性,表明变化状态动态的认知能力较差.
- 在T2DM中发现默认模式网络 (DMN) 和任务积极网络 (TPN) 的网络间连接性下降,网络内部连接性增加.
- 检测到Precuneus网络 (PCUN) 的变化以及 Salience网络 (SN) 和 TPN之间的增强连接.
结论:
- T2DM与大规模大脑网络的动态性质的显著改变有关.
- 大脑状态和网络连接的这些动态变化与T2DM的认知障碍有关.
- 这些发现提供了对T2DM认知缺陷的神经生物学基础的见解,突出了动态连接分析的重要性.
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