生物标志物 生物标志物
Jason A Mares1, Jia Guo2, Tal Nuriel3,4,5
1Columbia University, New York, NY, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
与非载体相比,Apolipoprotein E ε4 (APOE4) 载体显示出明显的阿尔茨海默病 (AD) 进展和大脑变化. 通过神经成像和人工智能检测到的这些差异会影响AD的发病过程,并可能指导个性化的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 医疗成像医学成像
背景情况:
- 阿波利波蛋白E ε4 (APOE4) 基因基因是阿尔茨海默病 (AD) 的重要危险因素,与早期发病有关.
- 对于阿波4载体和非载体之间AD病因学和呈现的具体差异的了解有限.
研究的目的:
- 在阿尔茨海默病神经成像倡议 (ADNI) 队列中,研究APOE4载体和非载体之间的神经成像生物标记差异.
- 探索新型深度学习方法DeepContrast在识别与APOE4状态相关的大脑活动特征方面的实用性.
主要方法:
- 在APOE4载体与ADNI队列的非载体中分析神经成像生物标志物 (Ab-PET,Tau-PET,FDG-PET,结构MRI,FLAIR MRI).
- 将DeepContrast深度学习算法应用于结构性MRI数据,以进行人工智能驱动的功能性大脑活动分析.
主要成果:
- 观察到APOE4载体和非载体之间神经成像读数的显著差异,根据性别和年龄而异.
- 在转换为MCI或AD的认知正常个体中确定了APOE4依赖的差异,这表明了特定的介导病理.
- 在APOE4载体与非载体中使用DeepContrast分析证明了明显的差异.
结论:
- 在APOE4携带者和非携带者之间存在病理异质性,表明AD的发病因子不同.
- 这些发现对在不同风险人群中定制诊断和治疗阿尔茨海默病有潜在的影响.
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