生物标志物 生物标志物
Anna Mammel1, Ging-Yuek Robin Hsiung2, Ali Mousavi3,4
1Neurocode USA Inc., Bellingham, WA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
化217 (p-tau217) 在阿尔茨海默氏症 (AD) 诊断方面表现有前途. 通过ALZpath测定,可以区分AD与其他病理,但不能区分AD与同时出现的疾病,如DLB或血管问题.
科学领域:
- 神经学 神经学
- 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:
- 基于血液的生物标志物为阿尔茨海默病 (AD) 提供了可访问的诊断.
- 化217 (p-tau217) 是阿尔茨海默病诊断和差异诊断的一个有前途的生物标志物.
- 评估ALZpath血p-tau217试验以区分AD与其他病理对于获得治疗至关重要.
研究的目的:
- 评估ALZpath血p-tau217试验在区分阿尔茨海默病 (AD) 病理方面的性能.
- 评估测试对AD与其他神经退行性病理 (包括混合病理) 的区分能力.
- 为了确定血p-tau217是否可以区分AD与同时出现的疾病 (DLB,血管病理,CAA) 和AD单独.
主要方法:
- 尸检确认的EDTA血样本的分析 (n=110) 来自阿尔茨海默病和其他病理病的患者.
- 在Quanterix HD-X SIMOA 分析器上使用ALZpath p-tau217 v2测定.
- 队列包括只有AD,AD与CAA,AD与DLB,AD与血管病理,AD与混合病理,TDP-43只有,Synuclein只有,和Tau只有组.
主要成果:
- 与仅TDP-43,仅synuclein,仅tau和混合病理组相比,AD病例中的血p-tau217度显著更高 (p < 0.001).
- 血p-tau217水平在AD和AD与DLB,AD与血管病理或AD与CAA组之间没有观察到统计学上显著的差异.
- 血p-tau217水平可以将AD与非AD病理区分开来,但与同时存在的疾病作斗争.
结论:
- 血p-tau217有效地将AD与混合病理和其他非AD神经退行性疾病区分开来.
- 该试验没有将AD与DLB,血管病理或CAA与AD单独区分开来,这表明病理重叠.
- 需要对尸检定义的队列进行进一步的研究,以充分阐明血p-tau217在复杂神经退行性病例中的作用.
相关概念视频
01:20Blood Studies for Cardiovascular System I: Cardiac Biomarkers
749
Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
749
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
516
Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
516