结构压缩和内腔脆弱性:将向邻近与陶荷重和痴呆症进展联系起来
Luyue Zhang1, Ana M Franceschi1,2,3,4, John F Crary3
1Department of Biomedical Engineering, Columbia University New York, NY, USA.
bioRxiv : the preprint server for biology
|September 15, 2025
概括
内皮层与内切口的接近可能会引发阿尔茨海默氏症 (AD) tau 病理. 这种解剖学风险因素预测了轻度认知障碍患者的AD进展情况,建议新的诊断和预防策略.
科学领域:
- 神经科学是一个神经科学.
- 生物机械工程 生物机械工程
- 放射学 放射学是一门学科.
背景情况:
- 阿尔茨海默氏病 (AD) 的特征是粉样β斑块和tau蛋白的神经纤维状结 (NFTs).
- 脑内皮层 (EC) 的早期tau病理是AD进展的关键事件.
- 欧洲共同体初始陶沉积的触发因素尚不清楚.
研究的目的:
- 测试假设,来自EC-切口 (TI) 附近的生物力学压力会启动病理.
- 调查EC-TI附近作为AD进展的新风险因素.
主要方法:
- 开发一种使用神经解剖学接触系数 (NCC) 来量化EC-TI近距离的方法.
- 将NCC方法应用于来自阿尔茨海默病神经成像计划 (ADNI) 队列的多式成像数据 (n=47).
- 将参与者分为高和低EC-TI相邻群的分层,并分析与认知衰退和AD转换相关的tau PET信号.
主要成果:
- 高EC-TI接近与轻度认知障碍患者的AD转化风险增加有关.
- 欧洲共同体的tau PET信号预测了仅在高度相邻群体中 (LLR p=0.009,欧洲共同体的tau PET p=0.036) 转化为AD,即使对其他风险因素进行了控制.
- 埃克-TI的近距离已经成为AD进展风险的显著,有解剖学依据的生物标志物.
结论:
- 接近EC-TI代表了一种新的生物力学因素,有助于在零星AD中启动tau病理学.
- 这一发现表明机械压力在AD病变发生过程中可能发挥作用.
- 靠近EC-TI可以作为AD风险分层的早期生物标志物,并为针对生物力学途径的新预防策略提供信息.
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