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相关概念视频

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

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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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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Updated: Jan 7, 2026

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

Francesca M Chappell1, Roberto Duarte2, Maria Del C Valdes Hernandez3

  • 1Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, Scotland, United Kingdom.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
概括
此摘要是机器生成的。

在MRI上可见的扩大周血管空间 (PVS) 与成年人的认知表现下降有关. 较高的PVS体积可能预测认知能力下降,突出显示它们对大脑健康的影响.

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科学领域:

  • 神经成像和认知科学 认知科学
  • 血管神经学 血管神经学
  • 衰老研究研究 衰老研究

背景情况:

  • 周血管空间 (PVS) 是大脑血管周围的充满液体的空间.
  • 扩大的PVS可通过磁共振成像 (MRI) 检测,并与衰老和脑血管疾病有关.
  • 在成人中,PVS体积与认知功能之间的联系尚不清楚.

研究的目的:

  • 调查PVS体积与成年人的认知表现之间的关联.
  • 为了确定PVS体积是否会随着时间的推移预测认知能力下降.

主要方法:

  • 利用了来自14个队伍的MRI和认知数据.
  • 在基底 (BG-PVS) 和白质 (CSO-PVS) 中计算的PVS体积.
  • 使用混合效应模型和后勤回归进行了横截面和纵向元分析.

主要成果:

  • 在所有研究中,较高的PVS体积与较低的认知分数相关,即使在调整后.
  • CSO-PVS体积增加10%与认知评分下降2%有关.
  • 在纵向分析中,增加的PVS体积预测了认知障碍的可能性增加,尽管具有人口变异性.

结论:

  • 在MRI可见的PVS体积与与衰老,血管和神经退行过程相关的认知衰退有关.
  • 需要进一步的纵向研究来巩固这些关联.
  • 探索替代PVS措施可能会为认知衰退提供更高的敏感性.