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Related Experiment Video

Updated: Jul 17, 2025

A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.
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Second-generation extracellular matrix patch for epicardial infarct repair.

Arjun Bhatt1, Michael J Bates1, Constantin B Marcu1

  • 1Department of Cardiovascular Sciences, Brody School of Medicine, East Carolina University, 115 Heart Drive, Greenville, NC, 27834, USA.

Journal of Cardiothoracic Surgery
|September 1, 2023
PubMed
Summary

This study shows a new bioactive patch improved heart function after a heart attack. The extracellular matrix patch promoted healing and significantly increased ejection fraction, offering hope for myocardial repair.

Keywords:
Extracellular matrix patchIschemic heart diseaseMyocardial infarctionMyocardial scar

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Area of Science:

  • Regenerative Medicine
  • Cardiovascular Surgery
  • Biomaterials

Background:

  • Current myocardial infarction treatments primarily manage hemodynamics, neglecting lost myocardium and impaired left ventricular function.
  • Epicardial infarct repair using bioactive patches is an emerging strategy to stimulate endogenous myocardial repair.
  • Diffuse, multivessel coronary artery disease and large anterior myocardial infarction present significant treatment challenges.

Purpose of the Study:

  • To evaluate the efficacy of a second-generation CorMatrix-extracellular matrix (ECM) patch as an adjunct to surgical revascularization.
  • To assess the impact of the ECM patch on myocardial repair and left ventricular function in a patient with extensive coronary artery disease and myocardial infarction.

Main Methods:

  • A young patient with diffuse, multivessel coronary artery disease and a large anterior myocardial infarction received surgical revascularization.
  • A second-generation CorMatrix-extracellular matrix (ECM) patch was applied epicardially as an adjunct therapy.
  • Left ventricular ejection fraction and myocardial scar characteristics were monitored post-intervention.

Main Results:

  • The patient exhibited progressive myocardial scar shrinkage following treatment with the ECM patch.
  • Left ventricular ejection fraction significantly increased from 10% to 51% post-intervention.
  • These functional improvements suggest a beneficial adjunctive role of the ECM patch.

Conclusions:

  • The second-generation CorMatrix-ECM patch demonstrated potential as an adjunctive therapy for myocardial infarction.
  • The observed myocardial scar reduction and functional recovery exceed typical outcomes of surgical revascularization alone.
  • This novel patch may offer a promising approach to enhance endogenous myocardial repair and improve left ventricular function.