在帕金森病中改变了步行速度和大脑网络连接
Shichan Wang1, Yi Xiao1, Yanbing Hou2,3
1Department of Neurology, Laboratory of Neurodegenerative Disorders, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Guoxuexiang 37#, Wuhou, Chengdu 610041, China.
Cerebral cortex (New York, N.Y. : 1991)
|November 6, 2024
概括
帕金森病 (PD) 患者表现出与临床症状相关的慢步速度. 大脑网络的变化,特别是视觉和小脑网络的变化,是这些步行障碍的基础.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 生物医学工程 生物医学工程
背景情况:
- 缓慢的步行速度和受损的大脑网络连接是帕金森病 (PD) 的标志.
- 了解PD中行走障碍的神经基础对于开发有针对性的干预措施至关重要.
- 以前的研究表明,在PD中,运动症状与大脑功能连接的改变之间存在联系.
研究的目的:
- 研究帕金森病 (PD) 患者的步行速度和临床特征之间的关系.
- 探索与PD中的步行速度缺陷相关的特定大脑网络连接性改变.
- 为了识别潜在的神经机制,导致PD的步行障碍.
主要方法:
- 招募了42名PD患者和20名健康对照 (HC).
- 采用统计独立组件分析 (ICA) 和相关性分析来评估大脑网络连接及其与步行速度的关系.
- 分析了各种大脑网络内部和之间的功能连接 (FC),包括视觉网络 (VN),小脑网络 (CN),感觉运动网络 (SMN) 和前端对象网络 (FPN).
主要成果:
- 与HC相比,PD患者的步行速度显著减慢.
- 在PD中,缓慢的步行速度与姿势不稳定性和步行障碍得分有负相关.
- 在VN和CN中观察到内部网络FC的减少,而在PN患者中,CN和SMN和FPN之间发生了互联网FC的增加.
- 步行速度缓慢的PD患者的一个小组在SMN和VN内增加了内部网络FC,并在VN和FPN和默认模式网络 (DMN) 之间减少了FC.
- 步行速度与CN FC呈负相关性,与CN-SMN FC呈正相关性.
结论:
- 在PD中,步行速度与特定的临床特征显著相关,特别是姿势不稳定和步行障碍.
- 改变大脑网络内部和大脑网络之间的功能连接,包括视觉,小脑,感觉运动和前侧双脚网络,都与PD相关的步行障碍有关.
- 这些发现为驱动帕金森病中步态障碍的神经机制提供了宝贵的见解,可能指导未来的治疗策略.
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