Abstract
Cardiac hypertrophy is an increase in the size of cardiac myocytes to generate increased muscle mass, usually driven by increased workload for the heart. Although important during postnatal development and an adaptive response to physical exercise, excessive hypertrophy can result in heart failure. One characteristic of hypertrophy is the re-expression of genes that are normally only expressed during foetal heart development. Although the involvement of these changes in gene expression in hypertrophy has been known for some years, the mechanisms involved in this re-expression are only now being elucidated and the transcription factor REST (repressor element 1-silencing transcription factor) has been identified as an important repressor of hypertrophic gene expression.
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