Matrix Metalloproteinases MMP-1 and MMP-9 and Their Inhibitor TIMP-1 as Markers of Dilated Cardiomyopathy in Patients

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Detection of Functional Matrix Metalloproteinases by Zymography
09:30

Detection of Functional Matrix Metalloproteinases by Zymography

Published on: November 8, 2010

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I B Antonov1, K L Kozlov1, E M Pal'tseva2

  • 1St. Petersburg Institute of Bioregulation and Gerontology, St. Petersburg, Russia.

Bulletin of Experimental Biology and Medicine
|March 6, 2018
PubMed

Insights

Matrix metalloproteinase (MMP)-2, MMP-9, and TIMP-1 expression did not change with aging in normal hearts. Dilated cardiomyopathy significantly elevates these proteins, suggesting their role in disease pathogenesis and potential as biomarkers.

Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Biochemistry

Background:

  • Extracellular matrix (ECM) remodeling is crucial in heart disease.
  • Matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) regulate ECM.
  • Understanding MMP/TIMP roles in dilated cardiomyopathy (DCM) is vital.

Purpose of the Study:

  • To investigate MMP-2, MMP-9, and TIMP-1 expression in aging myocardium and DCM.
  • To assess the role of ECM remodeling in DCM pathogenesis.
  • To evaluate MMP-2, MMP-9, and TIMP-1 as potential biomarkers for DCM.

Main Methods:

  • Analysis of myocardial autopsy samples across different age groups.
  • Culturing of cardiomyocytes under normal and DCM-mimicking conditions.
  • Quantitative assessment of MMP-2, MMP-9, and TIMP-1 expression and ratios.

Main Results:

  • Aging did not alter MMP-2, MMP-9, or TIMP-1 expression in normal myocardium or cardiomyocyte cultures.
  • Dilated cardiomyopathy showed a 1.5-9 fold increase in MMP-2, MMP-9, and TIMP-1 levels and their ratios.
  • Elevated MMP/TIMP ratios were observed in both autopsy samples and cell cultures from DCM patients.

Conclusions:

  • ECM remodeling significantly contributes to the pathogenesis of dilated cardiomyopathy.
  • MMP-2, MMP-9, and TIMP-1, along with their ratios, are promising biomarkers for DCM.
  • These markers may aid in evaluating treatment efficacy for DCM across various age groups.
Keywords:
MMP-2MMP-9TIMP-1agingdilated cardiomyopathy

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