生物标志物 生物标志物
Natasha V Stevanovich1, Robert Stewart2,3, Dag Aarsland1,2
1Centre for Healthy Brain Ageing, IoPPN, King's College London, London, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
社会经济贫困与认知障碍患者的大脑体积减少有关. 较高的剥夺分数与较小的海马体和杏仁体体积相关,表明神经退行易受攻击性增加.
科学领域:
- 神经成像是一种神经成像.
- 神经退行发生神经退行.
- 公共卫生 公共卫生
背景情况:
- 社会经济贫困与痴呆症风险因素和海马和杏仁体等关键区域的大脑体积减少有关.
- 之前的研究没有在现实世界认知障碍人群中检查这些关联.
- 机器学习现在允许从临床MRI中详细分析较小的大脑结构.
研究的目的:
- 研究具有认知障碍的患者的社会经济贫困和特定大脑体积 (整个大脑,海马体,海马子领域,杏仁体) 之间的关联.
- 利用先进的机器学习技术进行精确的体积分析.
- 探索神经退行症的区域脆弱性.
主要方法:
- 利用来自南伦敦和莫德斯利 (SLaM) 图像银行的MRI扫描用于被诊断为MCI/痴呆症亚型的患者.
- 获得的英国多重贫困指数 (IMD) 评分和可修改痴呆风险因素的数据.
- 采用多个线性回归模型,调整混因子,并使用ANTsX管道分析海马子和杏仁体体积.
主要成果:
- 包括3075名患者 (平均年龄77岁,58%为女性),诊断包括阿尔茨海默病 (AD) 和轻度认知障碍 (MCI).
- 在所有认知障碍类型中,更高的IMD得分 (更大的剥夺) 与海马和杏仁体体积的减少显著相关.
- 在海马子领域 (例如,CA1),准海马回环,外围皮质和杏仁体中注意到了特定的减少,在AD和MCI组中最强烈的关联.
结论:
- 较高的社会经济贫困与具有认知障碍的个体中明显的海马子和杏仁体缩有关.
- 社会经济贫困可能在区域对神经退行症的脆弱性中发挥着比以前认为的更重要的作用.
- 研究结果强调了社会决定因素对大脑健康和神经退行过程的影响.
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