在帕金森病的认知衰退连续性中,网络通信对认知功能的阶段性差异性影响
Xiaolu Li1, Huize Pang1, Shuting Bu1
1Department of Radiology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, China.
Neurobiology of disease
|June 26, 2024
概括
帕金森病中休息状态网络连接的变化揭示了背部注意力和感觉运动网络的改变,视觉网络成为痴呆症的中心. 网络连接在不同疾病阶段对认知有不同的影响.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 认知科学 认知科学
背景情况:
- 帕金森病 (PD) 是一种神经退行性疾病,其特点是运动症状和渐进性认知衰退.
- 了解PD认知障碍的神经基础对于开发有针对性的干预措施至关重要.
研究的目的:
- 在帕金森病的认知衰退频谱中调查静止状态网络 (RSN) 连接的变化.
- 检查个人网络连接如何影响PD不同临床阶段的认知表现.
主要方法:
- 休息状态功能性MRI和神经心理测试对108名PD患者 (分类为PD-NC,PD-MCI,PDD) 和34名健康对照 (HC) 进行.
- 使用独立组件分析 (ICA) 和图形理论分析 (GTA) 来评估RSN连接.
- 使用稀疏变系数建模来分析网络通信对认知的阶段依赖影响.
主要成果:
- 在PD早期阶段 (PD-NC,PD-MCI) 观察到背部注意网络 (DAN) 和背部感觉运动网络 (dSMN) 的连接性下降.
- 侧视网络 (LVN) 在痴呆阶段 (PDD) 显示出更高的中心性,而小脑网络 (CBN) 连接性在早期阶段增加.
- 图形理论分析显示,DAN和dSMN的节点指标下降,CBN的指标增加,对认知有阶段依赖的影响.
结论:
- 静止状态网络连接在整个帕金森病进展过程中经历了动态变化,LVN成为中心,CBN连接在后期阶段减少.
- 网络连接和认知衰退之间的关系是非线性的,这表明有可能进行特定阶段的治疗干预.
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