生物标志物 生物标志物
Fabian Hirsch1, Lukas Frontzkowski1,2,3, Sebastian Roemer-Cassiano1,4,5
1Institute for Stroke and Dementia Research (ISD), University Hospital, LMU Munich, Munich, Bavaria, Germany.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
大脑网络枢纽影响阿尔茨海默病 (AD) 的进展. 从病理中心到连接器枢纽的高效通信可以放大粉样蛋白对阿尔茨海默病患者的传播和认知衰退的影响.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 网络科学 网络科学
背景情况:
- 陶氏病理是神经退行和阿尔茨海默氏症 (AD) 认知衰退的关键驱动因素.
- 临床前模型表明tau通过连接的神经元之间通过突触传播.
- 大脑功能网络拓学可能会影响tau传播的动态.
研究的目的:
- 为了调查功能性大脑枢纽是否加快了阿尔茨海默病中tau的传播.
- 确定从tau中心到特定枢纽类型 (连接器与局部) 的通信效率是否会影响tau积累和认知衰退.
主要方法:
- 来自ADNI/A4队列 (n=325/220) 的纵向/粉样蛋白-PET和认知数据的分析.
- 使用结构/功能连接模板,模拟从主体级的tau中心到连接器和局部枢纽的连接效率.
- 强大的回归来测试枢纽通信效率,tau积累,认知衰退和tau传播之间的关联.
主要成果:
- 较高的基线粉样蛋白-PET加速了全球tau-PET的增加,通过连接器枢纽的通信效率调节 (ADNI/A4:β=0.31/0.40,p<0.001/0.03).
- 对连接器枢纽的更强烈的中心通信放大了粉样蛋白对陶积累率的影响.
- 这种相互作用还预测了更快的认知衰退 (ADNI/A4:β=-0.49/-0.34,p<0.001/0.04) 和在网络中更大的tau传播 (ADNI/A4:β=0.6/0.36,p<0.001/0.04).
结论:
- 大脑网络拓学显著塑造了AD中的tau积累和认知轨迹.
- 中心和连接器枢纽之间的增强通信放大了与粉样蛋白相关的传播.
- 大脑的网络架构在阿尔茨海默氏病中批判性地调节了陶聚合和疾病进展.
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