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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.
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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.

Emma F Bublitz1,2,3,4, Carol A Van Hulle3, Hannah Zylstra5

  • 1University of Wisconsin-Madison, Madison, WI, USA.

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

Icosapent ethyl (IPE) did not significantly alter cerebral blood flow in veterans. However, baseline vascular cerebrospinal fluid (CSF) biomarkers correlated with blood flow measures, unlike APOE ε4 carrier status.

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Area of Science:

  • Neuroscience
  • Cardiovascular Medicine
  • Radiology

Background:

  • Veterans have higher risks of vascular disease and Alzheimer's disease (AD).
  • Icosapent ethyl (IPE), an omega-3 fatty acid, reduces cardiovascular events and triglycerides.
  • Cerebrovascular health may influence AD risk, and 4D flow MRI (PCVIPR) can assess brain blood flow and arterial stiffness.

Purpose of the Study:

  • To investigate the effects of IPE on cerebrovascular health in veterans using 4D flow MRI (PCVIPR).
  • To explore the relationship between IPE, APOE genotype, and cerebrospinal fluid (CSF) biomarkers in veterans.

Main Methods:

  • The BRAVE-EPA study was a randomized, double-blind, placebo-controlled trial involving 123 cognitively unimpaired veterans.
  • Participants received 4g daily IPE or placebo for 18 months, undergoing PCVIPR MRI and CSF biomarker analysis.
  • Image analysis focused on mean blood flow (MF), pulsatility index (PI), and total cerebral blood flow (CBF).

Main Results:

  • IPE treatment did not significantly change MF, PI, or CBF measures over 18 months.
  • APOE ε4 carriers and non-carriers showed similar baseline blood flow.
  • Baseline CSF vascular biomarkers correlated significantly with PI and, to a lesser extent, MF.

Conclusions:

  • IPE treatment did not significantly impact PCVIPR measures of cerebral blood flow in this veteran cohort.
  • Baseline CSF vascular biomarker levels, not APOE ε4 status, were associated with baseline cerebral blood flow measures.