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Nature Medicine 13, 901 - 902 (2007)
doi:10.1038/nm0807-901

Cardiac aid to the injured but not the elderly?

Charles E Murry1

  1. Charles E. Murry is in the Department of Pathology, Center for Cardiovascular Biology, Institute for Stem Cell and Regenerative Medicine, University of Washington, 815 Mercer St. Room 453, Seattle, Washington 98109, USA. e-mail: murry@u.washington.edu


A genetic lineage-tracing study provides evidence that adult progenitor cells repopulate the cardiomyocyte pool in diseased hearts, but not during normal aging (pages 970–974). These stem cells could become the basis for innovative ways to treat or prevent heart failure.


Like modern-day alchemists, scientists have been searching for cell populations capable of regenerating the heart. Their search is prompted by the fact that the injured heart heals by scar formation rather than by muscle regeneration1, and this lack of regeneration is a root cause of most clinical cases of heart failure.

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