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缺少淋巴功能与轻度认知障碍及其发展为阿尔茨海默病有关:DTI-ALPS研究
Cuiping Bao1, Hongbin Luo2, Jiao Wang3
1Department of Radiology, Tianjin Union Medical Center, The First Affiliated Hospital of Nankai University, Tianjin 300121, China.
The journal of prevention of Alzheimer's disease
|April 12, 2025
概括
周周血管空间 (ALPS) 指数较高与轻度认知障碍 (MCI) 的风险降低有关,并将阿尔茨海默病 (AD) 的进展推迟约3.5年. 这种保护作用可能由粉样β,和执行功能介导.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 生物标志物 生物标志物
背景情况:
- 轻度认知障碍 (MCI) 和阿尔茨海默氏症 (AD) 构成了重大的公共卫生挑战.
- 了解影响MCI风险和进展的因素对于早期干预至关重要.
研究的目的:
- 研究沿周血管空间 (ALPS) 指数与从认知正常 (CN) 状态发展到MCI的风险之间的关联.
- 检查ALPS指数与MCI患者阿尔茨海默病进展之间的关系.
- 在这些关联中识别潜在的调解因素,包括神经生物标志物和认知功能.
主要方法:
- 这项研究分析了来自阿尔茨海默氏病神经成像计划的519名参与者的数据 (253 CN, 266 MCI).
- 用ALPS指数评估淋巴功能,该指数是从基线时的扩散张力成像得出的.
- 神经生物标志物 (粉样β,tau) 和认知功能被评估为潜在的调解者,数据使用回归和调解分析进行分析.
主要成果:
- 在3.6年的中位数随访期间,11.86%的CN参与者患上了MCI,而27.4%的MCI参与者进展到AD.
- 较高的ALPS指数与MCI (HR:0.605) 和AD进展 (HR:0.501) 的风险降低有关.
- 高的ALPS指数与MCI和AD的延长发病时间约为3.5-3.8年有关. 冠状动脉中的粉样蛋白-β,皮质中的和执行功能调解了这些关联.
结论:
- 较高的ALPS指数显著降低了患MCI的风险,并延迟了AD的进展.
- 高ALPS指数的神经保护作用似乎部分由粉样β沉积,病理和执行功能介导.
- ALPS指数作为一个有价值的成像生物标志物,用于评估淋巴功能和预测衰老中的认知衰退.
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