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Updated: Feb 13, 2026

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血ATN表型在人口代表的美国人口中的公平性和可转移性 年龄化的队列
medRxiv : the preprint server for health sciences
|February 12, 2026
概括
对于阿尔茨海默病的等离子体生物标志物在检测人口群体之间的认知障碍方面显示出显著的差异. 这些血液测试在少数群体和弱势群体中可能会有系统地表现不佳,需要仔细验证.
科学领域:
- 神经学 神经学
- 生物标志物研究 生物标志物研究
- 健康 公平 卫生 公平
背景情况:
- 阿尔茨海默病 (AD) 的等离子体生物标志物正在出现,但它们在不同人群中的真实表现尚不清楚.
- 粉样蛋白,蛋白和神经退行 (ATN) 生物标志物框架是有希望的,但需要在人口代表性环境中进行验证.
研究的目的:
- 为了评估血ATN生物标志物的公平表现,在全国代表的美国样本中,在不同的人口群体中评估ATN生物标志物.
- 评估ATN生物标志物是否准确地反映了认知状态,无论种族,种族,性别或教育水平.
主要方法:
- 在健康和退休研究中分析了4427名美国成年人的数据.
- 人口加权分析和公平性分析,以检查生物标志物认知关联和检测差异.
- 针对血管并发症进行调整,以隔离特定生物标志物的股权差距.
主要成果:
- 只有tau生物标志物在人口水平上与认知有稳定的关联;粉样蛋白和神经退行症标志物失去了意义.
- 白人比黑人参与者的认知障碍检测灵敏度是白人的两倍以上,黑人女性的发病率最低.
- 教育水平改变了生物标志物-认知关系,在弱势群体中显示出矛盾的效应,即使在调整了血管因素之后.
结论:
- 血ATN生物标志物在美国人口中并不均普遍.
- 存在显著的公平差距,在少数群体和社会经济弱势群体中,生物标志物可能表现不佳.
- 在临床部署基于血液的AD生物标志物之前,基于人口的验证和以公平为基础的校准至关重要.
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