改变了2型糖尿病中默认模式网络的动态有效连接
Kun Xu1,2, Jun Wang1,2, Guangyao Liu2,3
1Second Clinical School, Lanzhou University, Lanzhou, China.
Frontiers in neurology
|January 30, 2024
概括
默认模式网络 (DMN) 的动态有效连接 (DEC) 在2型糖尿病 (T2DM) 中发生变化,影响认知功能. 这些大脑变化与T2DM患者的疾病严重程度和认知评分相关.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 内分泌学 在内分泌学.
背景情况:
- 在默认模式网络 (DMN) 中改变静止状态功能连接 (rs-fMRI) 与2型糖尿病 (T2DM) 的认知衰退有关.
- 在T2DM患者中,DMN内的动态有效连接 (DEC) 仍然在很大程度上未被探索.
研究的目的:
- 在2型糖尿病 (T2DM) 患者的默认模式网络 (DMN) 中研究动态有效连接 (DEC).
- 为了比较T2DM患者和健康对照 (HC) 之间的DEC模式.
主要方法:
- 使用独立组件分析 (ICA) 和多变量格兰杰因果分析 (mGCA).
- 分析了36名T2DM患者和40名健康对照 (HC) 的rs-fMRI数据.
主要成果:
- 在T2DM患者中,在一个特定的状态 (状态1) 中,在DMN内发现了降低的DEC.
- 确定了与食物渴望和代谢调节相关的大脑区域的因果信息流的改变.
- 在T2DM患者中观察到较长时间的低活动状态和减少状态过渡率.
- 这些动态大脑变化与MoCA分数负相关,与HbA1C水平正相关.
结论:
- 在DMN中的动态有效连接性改变为T2DM相关的认知缺陷提供了新的见解.
- 这项研究强调了动态大脑活动对于理解T2DM的神经影响的重要性.
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