体质指数轨迹与阿尔茨海默病病理学之间的特定阶段的时间关联
Mingxi Dang1,2,3, Kewei Chen4, Dandan Wang1,3,5
1State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
European radiology
|January 28, 2026
概括
早期阿尔茨海默氏病 (AD) 病理学,特别是β-粉样沉积,预测身体质量指数 (BMI) 的下降. 然后,这种下降会加速神经退行和tau积累,突出显示AD进展中的自我强化循环.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 代谢研究的研究.
背景情况:
- 体质指数 (BMI) 的临床前下降与阿尔茨海默病 (AD) 神经退行和死亡率的加速有关.
- 患病前的BMI轨迹与AD神经病理学之间的时间关系尚未得到充分理解.
研究的目的:
- 描述在轻度认知障碍 (MCI) /AD诊断之前的特定阶段的BMI动态.
- 评估BMI变化与AD核心病理之间的双向关联,包括β-粉样蛋白 (Aβ),tau和神经退行.
主要方法:
- 从阿尔茨海默病神经成像倡议的1570名参与者的纵向队列研究.
- 线性混合效应模型被用于构建BMI轨迹.
- 部分相关性和交叉滞后面板模型评估了BMI变化和AD病理之间的双向关联.
主要成果:
- 前时间Aβ沉积预测了临床前的BMI下降,这与MCI过渡期间加速的神经退行相关.
- 在MCI诊断后,较低的BMI与脑脊液水平升高有关.
- 在MCI诊断时,较低的先发性BMI与MCI到AD进展期间更快的tau积累和时间性低代谢有关.
结论:
- 在BMI轨迹和AD病理之间存在时间关系:早期Aβ预测BMI下降,加剧病和神经退行.
- 体重指数的下降反映了AD病理的开始,并通过特定阶段的机制放大了疾病的进展.
- 监测BMI轨迹可能有助于识别患有AD高风险的个体,并跟踪疾病进展,这表明代谢干预的潜在价值.
关键词:
阿尔茨海默氏症是阿尔茨海默氏症的一种疾病.体重指数 (Body Mass Index) 是一个指数.磁共振成像技术 磁共振成像技术轻度认知障碍 轻度认知障碍定子发射断层扫描 (PET) 是一种定子发射断层扫描.更多相关视频
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