title: Heart-healthy hypertrophy.
abstract: Exercise induces growth of heart muscle cells and heart size. A new report in Cell (Boström et al., 2010) suggests that mice also respond to exercise with increased cardiac myocyte proliferation, and the molecular regulators of this pathway are linked to maladaptive and pathologic responses to cardiac stresses such as pressure overload.
authors.affiliation: Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: Chinmay M
authors.initials: CM
authors.lastname: Trivedi
authors.forename: Jonathan A
authors.initials: JA
authors.lastname: Epstein