在患有基底腺缺血性中风的患者中,破坏了内在的功能性大脑拓学
Jian Zhang1,2, Shijian Chen1,3, Chengmin Yang4
1Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Quantitative imaging in medicine and surgery
|December 10, 2025
概括
急性基底腺性缺血性中风 (BGIS) 破坏大脑网络,导致局部组织受损,运动和认知中心的连接性发生变化. 右前中心回形显示补偿性超连接性,表明其在中风恢复中的作用.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 医疗成像医学成像
背景情况:
- 基底腺缺血性中风 (BGIS) 显著影响运动,认知和情绪功能.
- 这些功能障碍背后的精确神经网络机制仍然不完全理解.
- 研究大脑网络拓学为BGIS病理生理学提供了关键的见解.
研究的目的:
- 在急性BGIS患者中调查大脑网络拓学的变化.
- 用静态功能磁共振成像 (rs-fMRI) 和图形理论分析 (GTA) 来进行网络评估.
- 为了比较BGIS患者和健康对照 (HC) 之间的网络特性.
主要方法:
- 使用Dosenbach图谱构建全脑功能网络.
- 对82名BGIS患者和83名HC患者的全球和局部拓性质的分析.
- 将图形理论分析 (GTA) 应用于静止状态fMRI数据的应用.
主要成果:
- BGIS患者表现出局部网络组织的破坏,以较低的正常化聚类系数,小世界性和模块化为证.
- 在右前中心环 (一个动力枢纽) 中观察到补偿性超连接性,通过增加的中心性指标表明了这一点.
- 认知和情绪中心的整合受损,包括左腹前额叶皮质和右背侧上额叶环.
结论:
- BGIS诱导大脑网络拓学的显著重新配置,有利于随机化和改变枢纽连接.
- 右前中心回环 (right precentral gyrus) 成为中风后恢复的关键中心.
- 这些发现为中风的网络层面机制以及神经调节干预的潜在目标提供了新的见解.
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