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Related Experiment Videos

The relationship between myocardial extracellular matrix remodeling and ventricular function.

Gregory L Brower1, Jason D Gardner, Mary F Forman

  • 1Department of Cell and Developmental Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC 29208, USA.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|August 29, 2006
PubMed
Summary

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Myocardial stress causes heart remodeling, altering collagen. Targeting collagen cross-linking, not just quantity, may improve heart failure treatment strategies.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Pathology

Background:

  • Myocardial stress triggers structural heart remodeling to normalize stress.
  • Remodeling involves cardiomyocyte hypertrophy and changes in myocardial collagen quantity, phenotype, and cross-linking.

Purpose of the Study:

  • To review collagen's structural organization in the myocardium.
  • To discuss collagen's impact on ventricular function.
  • To evaluate the efficacy of anti-fibrosis therapy in heart failure.

Main Methods:

  • Literature review of collagen's role in myocardial remodeling and function.
  • Analysis of the relationship between collagen quantity, quality, and ventricular stiffness.
  • Examination of therapeutic strategies targeting myocardial fibrosis.

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Main Results:

  • Ventricular stiffness is influenced by both collagen quantity and quality (cross-linking).
  • Increased collagen or cross-linking stiffens the ventricle; decreased collagen increases compliance.
  • Limited evidence suggests reducing interstitial collagen negatively impacts systolic function.

Conclusions:

  • Alterations in collagen quantity and quality significantly affect cardiac chamber stiffness.
  • Therapeutic strategies should consider targeting collagen cross-linking over mere reduction in collagen concentration.
  • A shift towards targeting collagen cross-linking may be beneficial for preventing adverse myocardial remodeling in heart failure.