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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

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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.
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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

Justin Jit Hong Ong1, Yi Jin Leow1,2, Jia Dong James Wang3

  • 1Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.

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。

周血管空间 (PVS) 与阿尔茨海默病 (AD) 病理学和认知衰退有关. 较高的PVS负担与AD生物标志物和较差的认知功能相关,这表明PVS是早期检测标志物.

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科学领域:

  • 神经学 神经学
  • 神经成像是一种神经成像.
  • 生物标志物 生物标志物

背景情况:

  • 周血管空间 (PVS) 是脑小血管疾病 (CSVD) 的关键标志物,也是血管对阿尔茨海默病 (AD) 的潜在指标.
  • 虽然PVS与脑血管功能障碍有关,但它们在AD病理和认知衰退中的特定作用,特别是在多样化的人口中,需要进一步调查.
  • 这项研究研究了PVS负担,AD血生物标志物和东南亚队列认知障碍之间的关系.

研究的目的:

  • 评估基底质中的PVS负担与AD血生物标志物 (p-tau181,NfL,GFAP,Aβ42/40) 之间的关联.
  • 评估多民族人口中PVS负担和认知功能之间的关系.
  • 探索PVS作为早期痴呆症检测生物标志物的潜力.

主要方法:

  • 从BIOCIS队列中对979名新加坡参与者 (平均年龄58.2岁) 进行了横截面研究.
  • 神经心理学评估将参与者分为认知正常,主观认知衰退和轻度认知障碍组.
  • 用MRI评估PVS和其他CSVD标志物;量化血AD生物标志物;根据相关共变量调整统计分析.

主要成果:

  • 较高的PVS负担与高的GFAP,NfL和p-tau181强烈相关,与Aβ42/40比率相反.
  • 与其他CSVD标志物相比,PVS在轻度认知障碍参与者中显示出与粉样β病理的最强相关性.
  • 增加的PVS负担与较差的视觉空间和执行功能有关.

结论:

  • 在临床前和前期的AD中,PVS负担作为脑血管功能障碍和粉样蛋白-tau病理的标志物.
  • 作为一种可访问的MRI标记物,PVS可以增强AD的诊断框架.
  • 将PVS评估纳入诊断方案可能有助于更早,更准确地识别患AD风险的个体.