Cardiomyocyte Regeneration in the mdx Mouse Model of Nonischemic Cardiomyopathy.

ABSTRACT: Endogenous regeneration has been demonstrated in the mammalian heart after ischemic injury. However, approximately one-third of cases of heart failure are secondary to nonischemic heart disease and cardiac regeneration in these cases remains relatively unexplored. We, therefore, aimed at quantifying the rate of new cardiomyocyte formation at different stages of nonischemic cardiomyopathy. Six-, 12-, 29-, and 44-week-old mdx mice received a 7 day pulse of BrdU. Quantification of isolated cardiomyocyte nuclei was undertaken using cytometric analysis to exclude nondiploid nuclei. Between 6-7 and 12-13 weeks, there was a statistically significant increase in the number of BrdU-labeled nuclei in the mdx hearts compared with wild-type controls. This difference was lost by the 29-30 week time poi

SUBMITTER: Richardson GD 

PROVIDER: S-EPMC4499792 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature