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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:
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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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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Biomarkers.

Natalia Chemas1, Rifah Anjum2, Charles R Marshall2

  • 1Queen Mary University of London, London, United Kingdom.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 24, 2025
PubMed
Summary
This summary is machine-generated.

Blood-based biomarkers for Alzheimer's disease (AD) show varied performance across different racial and ethnic groups. More diverse research is needed to ensure accurate diagnosis and treatment for all populations.

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Area of Science:

  • Neurology
  • Biomarker Research
  • Clinical Diagnostics

Background:

  • Alzheimer's disease (AD) presents differently across racial and ethnic groups due to genetic and environmental factors.
  • Blood-based biomarkers offer potential for early AD detection but require validation in diverse populations.
  • Homogeneous population validation may lead to inaccurate assessments in diverse groups.

Purpose of the Study:

  • To review the performance of blood-based Alzheimer's disease biomarkers across diverse ethnoracial populations.
  • To assess variations in biomarker concentrations and clinical outcomes in different racial and ethnic groups.
  • To identify research gaps in the validation of blood-based biomarkers for AD in diverse populations.

Main Methods:

  • Comprehensive literature search of studies from 2000 onwards in major databases.
  • Inclusion of studies reporting blood biomarkers (Aβ, p-tau, t-tau, NfL, GFAP) and AD clinical outcomes with ethnoracial breakdown.
  • Data extraction focused on demographics, biomarkers, diagnostic metrics, and statistical methods; heterogeneity and subgroup analyses were performed.

Main Results:

  • A paucity of studies evaluated blood-based biomarkers for AD across ethnically diverse populations.
  • Individual studies suggest significant variations in biomarker levels and diagnostic performance across ethnoracial categories.
  • Heterogeneity in measures and outcomes prevented high-quality pooled evidence for clinical practice.

Conclusions:

  • Blood-based biomarkers for AD likely exhibit varying concentrations and diagnostic performance across ethnoracial groups.
  • High-quality studies with harmonized data are necessary to guide the clinical implementation of these biomarkers in diverse populations.
  • Further research is crucial for accurate interpretation and application of AD blood biomarkers in real-world, diverse settings.