在初级闭角玻璃眼患者中改变了静态和动态功能网络连接.
Yuanyuan Wang1, Yongqiang Shu2, Guoqian Cai1
1Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Scientific reports
|May 22, 2024
概括
主要闭角光眼 (PACG) 患者表现出大脑连接的改变. 观察到静态和动态的功能网络连接变化,为视神经损伤机制提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 医疗成像医学成像
背景情况:
- 主要视角闭合型玻璃眼 (PACG) 是视力损失的一个重要原因.
- 了解PACG的神经病理机制对于开发有效的治疗方法至关重要.
研究的目的:
- 研究PACG患者的静态和动态功能大脑网络连接 (sFNC和dFNC) 的变化.
- 为了将这些连接性变化与临床变量相关联,包括眼内压力 (IOP).
主要方法:
- 分析了34名PACG患者和33名健康对照者的功能性MRI (fMRI) 数据.
- 使用独立组件分析,滑动窗口和k-means集群来评估八个静止状态网络的功能网络连接 (FNC) 和时间指标.
- 统计分析发现了群体之间FNC和时间指标的差异,并将其与临床数据相关联.
主要成果:
- 与HC相比,PACG患者在特定网络对 (SMN-AN,SMN-VN,VN-AN) 中呈现sFNC降低.
- 确定了四个不同的动态功能连接 (dFNC) 状态,显示与sFNC发现的高度一致.
- PACG患者在特定的dFNC状态 (状态3) 中花费的时间更少,这与IOP负相关.
结论:
- PACG患者在静态和动态功能性大脑连接方面表现出显著的异常.
- sFNC和dFNC发现的重叠表明PACG的稳定网络变化.
- 这些结果为PACG视神经损伤的神经病理基础提供了新的视角.
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