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Matrix metalloproteinases in patients with myocardial infarction and percutaneous revascularization

Robert E Eckart1, Catherine F T Uyehara, Eric A Shry

  • 1Cardiology Service (ATTN: MCHE-MDC), Brooke Army Medical Center, 3851 Roger Brooke Drive, Fort Sam Houston, San Antonio, TX 78234-6200, USA. Robert.Eckart@amedd.army.mil

Journal of Interventional Cardiology
|March 11, 2004
PubMed

Insights

Matrix metalloproteinases (MMPs) show varied responses in acute coronary syndromes. Monitoring MMP-1, MMP-2, and MMP-9 levels reveals distinct patterns related to myocardial infarction and revascularization procedures.

Area of Science:

  • Cardiovascular Medicine
  • Biochemistry
  • Enzymology

Background:

  • Extracellular matrix remodeling is integral to coronary artery disease (CAD).
  • Matrix metalloproteinases (MMPs) are key enzymes in extracellular matrix degradation.
  • The precise role of MMPs in acute coronary syndromes (ACS) requires further elucidation.

Purpose of the Study:

  • To investigate the serum levels of MMP-1, MMP-2, and MMP-9 in patients undergoing cardiac catheterization.
  • To assess the dynamic changes in MMP levels in relation to myocardial infarction and revascularization.
  • To determine the differential roles of MMP subtypes in ACS and response to treatment.

Main Methods:

  • Serum samples from 100 cardiac catheterization patients were analyzed for MMP-1, MMP-2, and MMP-9.
  • MMP levels were measured pre-procedure, immediately post-procedure, and 24 hours after.
  • Correlations between MMP levels, patient characteristics, angiography, and clinical outcomes were examined.

Main Results:

  • MMP-1 levels increased during hospitalization in myocardial infarction patients; MMP-2 levels were elevated throughout monitoring; MMP-9 levels were lower and decreased over time.
  • MMP-1 was significantly higher 24 hours post-catheterization in patients undergoing revascularization.
  • Patients receiving percutaneous revascularization showed higher post-procedure MMP-9 levels compared to those undergoing angiography alone.

Conclusions:

  • Serial MMP monitoring reveals distinct subtype responses in myocardial infarction and percutaneous revascularization.
  • MMP subtypes appear to play differential roles in the pathogenesis of ACS and the efficacy of revascularization therapies.
Abstract

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