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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)
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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

Fei Wu1,2, Ali Dirani3, Monica Lavoie4,5

  • 1Clinique Interdisciplinaire de Mémoire, CHU de Québec-Université Laval, Québec, QC, Canada.

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。

洛戈佩尼克变体初级渐进性阿法西亚 (lvPPA) 患者表现出更薄的视网膜神经纤维层和减少的状无血管区循环. 这些光学连贯性断层扫描 (OCT) 和OCT血管学 (OCT-A) 发现表明lvPPA的早期诊断生物标志物的潜力.

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科学领域:

  • 神经科学是一个神经科学.
  • 眼科医生 眼科 眼科
  • 放射学 放射学是一门学科.

背景情况:

  • 主要渐进性失言症 (lvPPA) 是一种神经退行性语言障碍.
  • 氨基粉症是86%的lvPPA病例的基础,类似于阿尔茨海默病 (AD).
  • 光学连贯断层扫描 (OCT) 和OCT血管学 (OCT-A) 是在AD中探索的非侵入性视网膜生物标志物,但尚未在lvPPA中探索.

研究的目的:

  • 为了比较lvPPA患者的视网膜发现和使用OCT和OCT-A的健康对照.
  • 研究OCT和OCT-A作为lvPPA的非侵入性生物标志物的潜力.

主要方法:

  • 一项横截面研究包括lvPPA患者和年龄/性别匹配的健康对照.
  • 眼科评估排除了具有先前神经或眼睛疾病的参与者.
  • 进行了OCT/OCT-A成像; lvPPA患者还接受了腰部穿刺和临床痴呆评分 (CDR) 评估.

主要成果:

  • 分析了10名lvPPA患者 (所有患者都患有粉样蛋白病变) 和11名对照患者.
  • 与对照组相比,lvPPA患者表现出明显较薄的时间视网膜神经纤维层 (RNFL) (63.1 ± 3.3μm与75.6 ± 3.2μm相比,p=0.013).
  • lvPPA患者显示出明显较低的状血管区 (FAZ) 圆度 (0.69 ± 0.02 与 0.77 ± 0.02 相比,p=0.002).

结论:

  • 在lvPPA中减少RNFL厚度可能表明由于粉样蛋白积累或逆行性退行导致的神经元退化.
  • 在lvPPA中FAZ循环的减少可能表明早期的粉样蛋白诱导的血管变化.
  • 超越国外地区和超越国外地区-A显示为有价值的非侵入性生物标志物,有望提高lvPPA的早期诊断.