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血pTau181和pTau217预测无症状的粉样蛋白积累和粉样蛋白PET一样好
Steffi De Meyer1,2, Jolien M Schaeverbeke1, Emma S Luckett1,3
1Laboratory for Cognitive Neurology, Department of Neurosciences, Leuven Brain Institute (LBI), KU Leuven, 3000 Leuven, Belgium.
Brain communications
|July 25, 2024
概括
像pTau181和pTau217这样的等离子体生物标志物,以及粉样蛋白βPET扫描,可以预测无症状个体未来的粉样蛋白β积累. 这些方法显示了可比的准确性,可能简化阿尔茨海默病预防试验的招聘.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物发现发现
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 阿尔茨海默病 (AD) 的临床前阶段为粉样蛋白β (Aβ) 降低疗法提供了一个关键的窗口.
- 准确预测Aβ积累对于确定参与者进行二次预防试验至关重要.
- 早期检测Aβ积累有助于开发早期阿尔茨海默病的治疗方法.
研究的目的:
- 为了比较血pTau181,血pTau217和粉样β (Aβ) PET负载对无症状老年人未来Aβ积累的预测能力.
- 评估这些生物标志物的实用性,以预测临床前AD的动态阶段.
- 为AD二次预防试验提供参与者选择策略的信息.
主要方法:
- 长度队列研究涉及F-PACK队列中的认知不受损的老年人.
- 使用单分子阵列试验量化基线血pTau181和pTau217.
- 使用接收器运行特征分析,相关性和逐步回归,对纵向的粉样蛋白-β PET 数据 (中位数为5年间隔) 的分析.
主要成果:
- 血pTau181 (AUC=0.72) 和pTau217 (AUC=0.75) 在预测Aβ积累方面表现出与粉样βPET (AUC=0.72) 相似的准确性.
- 血pTau181和pTau217显示出强烈的相关性 (r=0.93) 并与Aβ变化率相似相关.
- 虽然每个生物标志物在人口模型中改善了预测,但结合这三种模式的多式模式表明了重叠的预测信息.
结论:
- 血pTau181,pTau217和粉样βPET提供重叠的信息,在预测无症状粉样β积累方面提供了可比的性能.
- 确认性PET扫描在AD早期的血液基生物标志物预查后,可能不会为参与者选择提供额外的价值.
- 需要进一步研究将血pTau物种与其他因素相结合,以提高预测性能和临床实用性.
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