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Related Concept Videos

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)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Biomarkers.

Sofia Perfetto1,2, Myuri Ruthirakuhan1,2, Yuen Yan Wong1,2

  • 1University of Toronto, Toronto, ON, Canada.

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

Elevated apoptosis markers in individuals with type 2 diabetes mellitus (T2DM) and depression are linked to cerebral microvascular damage. This suggests distinct pathways in comorbid mood and metabolic conditions.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Biochemistry

Background:

  • Cerebrovascular disease and apoptosis increase dementia risk.
  • Depression and type 2 diabetes mellitus (T2DM) are known risk factors for dementia.
  • This study examines how apoptosis markers and cerebrovascular MRI markers interact in individuals with T2DM and depression.

Purpose of the Study:

  • To investigate the association between apoptosis-related protein concentrations and cerebrovascular MRI markers.
  • To determine if these associations differ based on the presence of T2DM and/or depression.
  • To explore unique pathophysiological mechanisms in comorbid mood and metabolic conditions.

Main Methods:

  • Cross-sectional study of UK Biobank participants stratified by T2DM and depression status.
  • Apoptosis proteins (BCL-2, BAX, caspase-3) measured in plasma using Olink Explore assay.
  • Cerebrovascular markers (FA, MD, WMH) quantified using MRI.
  • Linear regression models analyzed associations, controlling for covariates.

Main Results:

  • In individuals with both T2DM and depression, higher BAX concentrations correlated with lower FA, higher MD, and greater WMH volumes.
  • Elevated BAX/BCL2 ratio was associated with lower FA and higher WMH volumes.
  • Increased caspase-3 levels correlated with lower FA, higher MD, and greater WMH volumes.

Conclusions:

  • Elevated peripheral apoptosis markers are associated with cerebral microvascular complications in individuals with T2DM and depression.
  • These findings highlight unique pathophysiological pathways in comorbid mood and metabolic conditions.
  • Suggests potential therapeutic targets for mitigating cerebrovascular damage in this population.