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Dating the Heart: Exploring Cardiomyocyte Renewal in Humans

Evan Graham1, Olaf Bergmann1,2

  • 1Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden; and.

Physiology (Bethesda, Md.)
|December 9, 2016
PubMed

Insights

Adult mammalian hearts possess regenerative capabilities, evidenced by cardiomyocyte division in humans. Enhancing this natural cell proliferation is key to achieving full cardiac repair.

Area of Science:

  • Cardiovascular Biology
  • Regenerative Medicine
  • Cardiac Physiology

Background:

  • Lower vertebrates exhibit remarkable heart regeneration.
  • Recent evidence indicates cardiomyocyte turnover occurs in adult humans.
  • This suggests inherent proliferative potential within mammalian cardiomyocytes.

Purpose of the Study:

  • To explore the regenerative capacity of adult mammalian hearts.
  • To investigate the implications of cardiomyocyte division for cardiac repair.
  • To underscore the importance of enhancing innate cardiomyocyte proliferation.

Main Methods:

  • Review of existing literature on vertebrate cardiac regeneration.
  • Analysis of studies demonstrating cardiomyocyte turnover in humans.
  • Synthesis of findings to establish a consensus on mammalian cardiomyocyte plasticity.

Main Results:

  • Regenerative mechanisms observed in lower vertebrates are reproducible in mammals.
  • Strong evidence supports the occurrence of cardiomyocyte turnover in humans.
  • An emerging consensus confirms adult mammalian cardiomyocytes can divide.

Conclusions:

  • Adult mammalian cardiomyocytes possess a latent ability to divide.
  • Harnessing and enhancing this proliferative capacity is crucial for complete cardiac regeneration.
  • Future therapeutic strategies may focus on stimulating endogenous cardiomyocyte division.

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