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Related Experiment Video

Updated: Apr 1, 2026

Permanent Ligation of the Left Anterior Descending Coronary Artery in Mice: A Model of Post-myocardial Infarction Remodelling and Heart Failure
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Decellularized amniotic membrane attenuates postinfarct left ventricular remodeling.

Rajika Roy1, Tobias Haase1, Nan Ma1

  • 1Berlin-Brandenburg Center for Regenerative Therapies, Berlin, Germany.

The Journal of Surgical Research
|October 1, 2015
PubMed
Summary

Decellularized amniotic membrane (AM) patches improved heart function after infarction, preserving cardiac output and contractility. This cell-free approach shows promise for treating heart damage.

Keywords:
Amniotic membraneCardiac surgeryLeft ventricular remodelingMyocardial infarctionPlacenta

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Area of Science:

  • Regenerative Medicine
  • Cardiovascular Research
  • Tissue Engineering

Background:

  • Amniotic membrane (AM) is a potential source for regenerative medicine.
  • Previous studies explored amniotic epithelial cells undergoing epithelial-to-mesenchymal transition (EMT).
  • This study investigates the effects of native and processed AM on post-ischemic heart function.

Purpose of the Study:

  • To evaluate the impact of unmodified, EMT-induced, and decellularized AM on left ventricular (LV) geometry and function after myocardial infarction.
  • To assess the inflammatory and regenerative potential of different AM preparations.

Main Methods:

  • Human AM was prepared as unmodified (AM), EMT-induced (EMT-AM), or decellularized (Decell-AM).
  • Characterization included histology, electron microscopy, and immunological assays.
  • Myocardial infarction was induced in mice, and AM patches were applied to the LV surface.
  • LV function was assessed using pressure-volume loops 4 weeks post-treatment.

Main Results:

  • Decell-AM showed no xenoreactivity or cytokine release.
  • Both AM and Decell-AM reduced infarct size and increased scar thickness.
  • Decell-AM treatment resulted in the best preservation of LV contractile function (dP/dt max, cardiac output).
  • Volume-based parameters and ejection fraction were similar between AM and Decell-AM groups.

Conclusions:

  • Decellularized AM supports post-infarct ventricular dynamics without direct regeneration.
  • A cell-free AM approach is a promising strategy for supporting infarcted hearts.
  • Further research is warranted to explore this cell-free therapeutic concept.