帕金森病中结构性大脑网络的重组与姿势不稳定性/走路困难
Zihan Li1, Jun Liu1, Xinxin Miao1
1Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Neuroscience letters
|March 21, 2024
概括
患有姿势不稳定/走路困难 (PIGD) 的帕金森病患者表现出大脑结构连接的改变,特别是在小脑和额头区域,影响运动功能.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 系统神经科学 系统神经科学
背景情况:
- 帕金森病 (PD) 的姿势不稳定/走路困难 (PIGD) 亚型与更快的进展和认知和运动衰退的风险增加有关.
- 在PD-PIGD患者的大脑结构拓组织的变化仍然在很大程度上是未知的.
- 了解这些变化对于阐明PIGD背后的病理生理机制至关重要.
研究的目的:
- 研究患有帕金森病的PIGD亚型 (PD-PIGD) 患者大脑网络结构拓组织的变化.
- 探索PD-PIGD患者网络指标和运动缺陷之间的关系.
- 为了确定PD-PIGD中受影响的特定大脑区域和连接.
主要方法:
- 扩散张力成像 (DTI) 和3D-TI扫描用于获取大脑数据.
- 结构性大脑网络是使用DTI白物质纤维通道学构建的.
- 应用了图形理论方法来分析网络拓性质,并对连接性进行基于网络的统计分析.
主要成果:
- 与PD-非PIGD患者和健康对照患者相比,PD-PIGD患者的最短路径长度增加.
- 在PD-PIGD患者中观察到结节性质的降低,主要在小脑,前额叶皮质,副中心叶片和视觉区域.
- 在大脑小肠状体的中心度和PIGD/运动分数之间发现了负相关性;在前-皮-SMA-岛屿-状通道中注意到结构连接性下降.
结论:
- 患有PD-PIGD的患者表现出异常的结构连接体,涉及小脑,前额外皮质和视觉区域.
- 这些拓差异为潜在的病理生理机制提供了洞察力,这些机制在帕金森病中驱动PIGD.
- 这些发现强调了网络级大脑变化的重要性,以了解PD亚型.
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