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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

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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...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

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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...
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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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生物标志物 生物标志物

Snehal Pandya1, Matteo De Marco1, Annalena Venneri1,2

  • 1Brunel University London, London, United Kingdom.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
PubMed
概括
此摘要是机器生成的。

阿尔茨海默病 (AD) 的多基因风险评分 (PRS) 与大脑结构变化有关,特别是在海马和杏仁体. 通过识别特定的大脑体积变化,PRS可能有助于诊断AD.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 医疗成像医学成像

背景情况:

  • 散发性阿尔茨海默病 (AD) 占病例的90%以上,遗传因素起着重要作用.
  • 调查多基因风险评分 (PRS) 提供了对影响AD相关大脑变化的基因相互作用的见解.
  • 了解AD的遗传贡献对于开发有效的诊断和治疗策略至关重要.

研究的目的:

  • 为了检查阿尔茨海默病 (AD) 的多基因风险评分 (PRS) 和区域灰质体积之间的关联.
  • 探索PRS如何结合或排除APOE,与不同参与者群体的大脑结构有关.
  • 确定PRS作为AD诊断生物标志物的潜力.

主要方法:

  • 利用了阿尔茨海默病神经成像计划 (ADNI) 738 名参与者的数据.
  • 使用三个不同的单核酸多态 (SNP) 值,构建了两组PRS (PRSwithAPOE和PRSwithoutAPOE).
  • 处理T1加权的MRI扫描以提取114个感兴趣的大脑区域的体积,使用SPM12.

主要成果:

  • 包括APOE在内的PRS (PRSwithAPOE) 与所有参与者的双边海马和杏仁体体积相关.
  • 分层分析揭示了PRS与APOE的关联,在认知不受损,MCI和AD群体中具有特定的区域体积.
  • 粉样蛋白阳性个体表现出PRSwithAPOE与海马,杏仁体和中回形体积的关联.

结论:

  • 阿尔茨海默病的多基因风险评分与该疾病特征的区域灰质体积有关.
  • 包括APOESNP显著影响了PRS和大脑结构之间的观察到的关联.
  • PRS,特别是PRSwithAPOE,可以作为一个有价值的工具来区分AD患者与那些轻度认知障碍或正常认知.