生物标志物 生物标志物
Annie Dang1, Di Wang1, Mohamad Habes2
1UT Health San Antonio, San Antonio, TX, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
阿尔茨海默病 (AD) 呈现出明显的脑缩和低代谢模式,影响不同的认知功能. 分离这些生物标志物对于准确的AD诊断和治疗策略至关重要.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 生物标志物发现发现
背景情况:
- 阿尔茨海默病 (AD) 诊断在历史上注意到了大脑低代谢和缩的独特模式.
- A/T/N框架将这些独特的生物标志物分组在一起,可能会失去关键的诊断细微差别.
- 最近的A/T/N框架代旨在纳入更详细的生物标志物概况.
研究的目的:
- 进行一项大规模的元分析,描述AD中低代谢和缩之间的分离.
- 为了比较与明显的缩和低代谢模式相关的行为关联.
- 探索由这些不同的神经病理过程影响的网络级连接.
主要方法:
- 使用BrainMap数据库进行基于voxel的形态测量 (VBM) 进行缩和基于voxel的生理学 (VBP) 进行低代谢的元分析.
- 对412个VBM和462个VBP对比进行了激活概率估计,以确定融合的大脑变化模式.
- 采用元分析连接建模,使用VBM/VBP区域作为节点,以探索网络层面的功能连接.
主要成果:
- 对VBM的分析显示,缩主要发生在双边海马体,圈和胰岛.
- 在VBP分析中,主要在后带膜叶和双侧顶膜叶中发现了低代谢.
- 观察到明显的行为关联:与记忆/情绪相关的缩,与推理/记忆/社会认知相关的低代谢.
结论:
- 阿尔茨海默氏症的缩和低代谢表现出不同的空间模式,并与不同的行为变化有关.
- 这种分离表明缩和低代谢的潜在不同的潜在神经病理.
- 倡导将缩和低代谢作为AD分析中的不同生物标志物类别单独纳入.
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