生物标志物 生物标志物
Stamatia Karagianni1,2, Alexis Moscoso Rial1,2,3, Martijn van Essen4
1Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
在氨酸217 (p-tau217) 生物标志物中酸化的质血可以准确地识别高度的阿尔茨海默氏症神经病理变化 (ADNC),但与低/中间阶段扎. 为了早期发现AD,需要进一步的研究.
科学领域:
- 神经学 神经学
- 生物标志物发现发现
- 神经成像是一种神经成像.
背景情况:
- 对阿尔茨海默氏症神经病理变化 (ADNC) 的准确分期对于临床试验和患者管理至关重要.
- 在体内tau-PET扫描对于高ADNC是有效的,但微侵袭性血生物标志物正在出现.
- 在血中酸化氨酸217 (p-tau217) 的氨酸是一种有前途的基于血液的生物标志物.
研究的目的:
- 评估血p-tau217的诊断性能,以识别中等和高ADNC.
- 为了比较血p-tau217的精度与尸检确认的ADNC和体内tau-PET扫描.
- 在不同认知状态下评估血p-tau217的实用性.
主要方法:
- 对ADNI和A4研究参与者的血p-tau217,Aβ42/Aβ40水平和FlortaucipirPET扫描的分析.
- 对一小部分参与者进行尸检时的神经病理学评估.
- 接收器操作特征 (ROC) 曲线分析以确定分辨准确性.
主要成果:
- 血p-tau217在尸体解剖时,在区分高ADNC与较低阶段的过程中显示出高准确度 (AUC>0.93).
- 生物标志物准确地确定了"没有"或"高"的ADNC (80-93%),但显示了低/中等ADNC的高变化.
- 结果与tau-PET结果一致,血生物标志物可靠地识别高ADNC (A+T+),但对A+T-个体来说不那么可靠.
结论:
- 血p-tau217有效地识别了极端ADNC阶段,但对中间水平的可靠性有限,这影响了其在生物分期中的使用.
- 在临床前病例中,生物标志物的表现较弱,包括A+T个体,挑战其在早期阿尔茨海默病检测中的作用.
- 补充诊断工具,可能包括先进的成像,可能是必要的,以提高可靠性在早期的疾病阶段.
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