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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

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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

Esra Kara1, Julian Dronse1, Gereon R Fink1,2

  • 1University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.

Alzheimer's & dementia : the journal of the Alzheimer's Association
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概括
此摘要是机器生成的。

阿尔茨海默氏病 (AD) 患者表现出海马与前皮质的功能连接性发生变化. 这种差异化损失,特别是沿前后轴的差异化损失,可能作为阿尔茨海默病的早期神经成像生物标志物,将其与正常衰老区分开来.

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科学领域:

  • 神经成像是一种神经成像.
  • 认知神经科学 认知神经科学
  • 神经学 神经学

背景情况:

  • 海马在与阿尔茨海默病 (AD) 相关的认知衰退中起着至关重要的作用.
  • 海马体表现出纵向组织,有明显的前后区域.
  • 在海马前后轴沿的AD中,功能连接性改变尚未得到充分理解.

研究的目的:

  • 在阿尔茨海默病 (AD) 中,研究海马体在其前后轴上的功能连接差异.
  • 探索海马功能连接的潜力,作为早期的神经成像生物标志物用于AD.

主要方法:

  • 分析了26名健康年轻人 (HY),27名健康老年人 (HS) 和33名AD患者的休息状态fMRI数据.
  • 前海马和后海马子区域被细分,并用作连接分析的种子.
  • 在各组之间评估了与默认模式网络组件 (precuneus) 的功能连接差异.

主要成果:

  • 在健康的年轻人和健康的老年人之间,没有发现海马与前肌连接的显著差异.
  • 健康的老年人和AD患者在使用整个海马体作为种子时没有显著差异.
  • 当分别分析前和后海马子区域时,出现了明显的群体差异,表明AD的差异化丧失.

结论:

  • 阿尔茨海默氏病 (AD) 与海马子区域和前体之间的功能连接差异化损失有关.
  • 改变的海马功能连接性可能作为AD的早期神经成像生物标志物.
  • 未来的研究应该考虑在AD研究中海马前后功能区分.