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Related Concept Videos

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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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.

Julia Kearley1, Bratislav Misic2, Maria Natasha Rajah1

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

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

Menopause and vascular risk significantly alter brain connectivity, with postmenopausal females showing greater vulnerability. Understanding these changes is key for cognitive health strategies in aging women.

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Area of Science:

  • Neuroscience
  • Vascular Biology
  • Aging Research

Background:

  • Menopause-associated hormonal shifts impact vascular health and brain function, specifically resting-state functional connectivity (rsFC).
  • Estrogen decline is linked to memory deficits and altered cognitive networks.
  • Vascular risk factors may worsen these effects in postmenopausal women, highlighting the need to understand their influence on rsFC.

Purpose of the Study:

  • To investigate how vascular risk factors influence rsFC in males versus females.
  • To examine if menopause status in middle-aged females modifies these associations.
  • To identify group-specific rsFC patterns related to vascular risk.

Main Methods:

  • Collected rs-fMRI data from premenopausal, postmenopausal, and male participants.
  • Computed FC matrices using cortical and hippocampal regions of interest.
  • Utilized two-group B-PLS analyses with vascular risk factors (BMI, cholesterol, BP, etc.) as behavioral vectors.

Main Results:

  • Both sexes showed altered rsFC with higher cholesterol and regular exercise; males also associated with BMI, females with BP and age.
  • Females uniquely displayed increased rsFC between attention and control/default mode networks, linked to cholesterol, BP, age, and exercise.
  • These effects in females were primarily driven by postmenopausal individuals.

Conclusions:

  • Sex and menopause status significantly modulate the relationship between vascular risk and rsFC.
  • Postmenopausal females exhibit heightened vulnerability to vascular risk-related rsFC changes, affecting networks crucial for cognition.
  • Vascular risk factors differentially impact rsFC in males and females, with BMI being a notable differentiator.