生物标志物 生物标志物
Avital Dell'Ariccia1, Armen Bodossian1, Logan Xin Zhang1
1Quantified Imaging, London, London, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
动脉脊柱标签 (ASL) 显示出作为阿尔茨海默病 (AD) 进展的非侵入性生物标志物具有前途. 来自ASL数据的新型感兴趣的元区域 (meta-ROI) 与认知得分有很好的相关性,这表明它在监测疾病中的实用性.
科学领域:
- 神经成像是一种神经成像.
- 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:
- 动脉脊柱标记 (ASL) 是一种非侵入性MRI技术,用于测量脑血流 (CBF).
- CBF变化表明阿尔茨海默病 (AD) 的进展,可以用作成像生物标志物.
- 这项研究探讨ASL作为一种潜在的替代入侵生物标志物,如PET扫描.
研究的目的:
- 从ASL数据中引入一个新的阿尔茨海默病感兴趣的元区域 (meta-ROI).
- 评估ASL衍生的元ROI与认知分数之间的相关性.
- 评估ASL在认知正常,MCI和AD阶段跟踪疾病进展的潜力.
主要方法:
- 分析了来自阿尔茨海默病神经成像计划 (ADNI3) 的ASL数据.
- 从17个区域构建了一个元ROI,显示与ADAS-Cog分数的线性关系.
- 用皮尔森相关系数 (R) 来测量测试组中meta-ROI CBF和ADAS-Cog分数之间的关联.
主要成果:
- 在meta-ROI得分和认知表现之间观察到显著的相关性 (R=0.72).
- 这种相关性与PET (R=0.75) 和CSF/血生物标志物报告的值相似.
- 这些发现表明,ASL衍生的输液是AD认知状态的可靠指标.
结论:
- 这种强烈的相关性支持使用ASL衍生的生物标志物来预测和监测AD进展.
- ASL为评估疾病状况提供了一种非侵入性成像替代方案.
- 进一步的研究可以验证ASL在痴呆症管理临床环境中的作用.
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