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持续的功能障碍作为阿尔茨海默病病理和进展的早期指标
Maryam Ghahremani1,2, Eric E Smith2,3,4, Zahinoor Ismail1,2,3,4,5,6,7
1Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Journal of the American Geriatrics Society
|December 16, 2025
概括
在没有痴呆症的成年人中,持续性功能障碍 (FI) 与阿尔茨海默病 (AD) 生物标志物和痴呆症风险增加有关. 过渡性FI不显示这些关联,突出显示持久性FI的预测价值.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 生物标志物研究 生物标志物研究
背景情况:
- 功能障碍 (FI) 对于痴呆症诊断至关重要,但早期的变化很难被发现.
- 关于FI与阿尔茨海默氏病 (AD) 生物标志物在临床前/临床前阶段之间的联系的研究有限.
- 这项研究调查了脑脊液 (CSF) AD生物标志物与认知正常的老年人持续性与暂时性FI之间的关联.
研究的目的:
- 在没有痴呆症的个体中检查CSFAD生物标志物和持久/暂时FI之间的横截面关联.
- 评估FI状态与发展痴呆症的风险之间的纵向关联.
- 为了确定持续的FI是否表明AD病理和进展风险较高.
主要方法:
- 来自阿尔茨海默病神经成像计划 (ADNI) 的1000名参与者的分析.
- 测量CSF生物标志物:p-tau181,Aβ42和ptau-181/Aβ42的比率.
- 使用特定的功能活动问卷单项对持久性FI (存在于前痴呆症访问的>2/3) 和短暂的FI进行操作.
主要成果:
- 持久性FI与较低的Aβ42,较高的p-tau181和增加的ptau-181/Aβ42比率有关.
- 过渡性FI没有显示与这些生物标志物的显著关联.
- 持久性FI与痴呆症发病率增加了6.66倍,而过渡性FI增加了1.72倍.
结论:
- 在没有痴呆症的个体中,持续的FI与阿尔茨海默病的显著病理学有关.
- 通过持久性来运行FI可以改善AD进展的预后.
- 这种方法可以提高早期检测,查和风险分层,以便及时进行干预.
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