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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:
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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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Biomarkers.

Russell Sawyer1, Oluchi Ekenze2, Ya Yuan3

  • 1University of Cincinnati, Cincinnati, OH, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 25, 2025
PubMed
Summary
This summary is machine-generated.

Black individuals have significantly greater white matter hyperintensities (WMH) volume compared to White individuals, potentially explaining racial disparities in dementia risk. Further research is needed to understand the underlying mechanisms of WMH development.

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Area of Science:

  • Neurology
  • Radiology
  • Public Health

Background:

  • White matter hyperintensities (WMH) are key indicators of cerebral small vessel disease.
  • WMH are linked to increased risks of Alzheimer's disease and vascular dementia.
  • Limited research exists on the interplay of race, geography, and WMH burden.

Purpose of the Study:

  • To investigate the relationship between race and geographical region with WMH lesion volume.
  • To assess WMH burden in specific brain regions and penetrating arteries.
  • To examine potential race x geographical region interactions in WMH development.

Main Methods:

  • Utilized MRI data from 1094 stroke/TIA participants in the REasons for Racial And Geographic Differences in Stroke (REGARDS) study.
  • Employed Unidentified Bright Object (UBO) detector for WMH lesion volume segmentation.
  • Applied generalized linear models, adjusting for covariates, to compare WMH volumes across racial and geographic groups.

Main Results:

  • Black participants exhibited greater whole brain, periventricular, and deep WMH lesion volumes compared to White participants (p < 0.0001).
  • No significant association was found between geographical region and WMH lesion volume in either racial group.
  • Interaction analysis indicated no significant race x geographical region interaction on WMH burden.

Conclusions:

  • Adjusting for demographic, clinical, and genetic factors, Black participants showed significantly higher WMH lesion volumes than White participants.
  • These findings may contribute to understanding racial differences in Alzheimer's disease and vascular cognitive impairment.
  • Further investigation is required to elucidate the mechanisms driving WMH development.