Altered β-adrenergic response in mice lacking myotonic dystrophy protein kinase.

ABSTRACT: The protein kinase product of the gene mutated in myotonic dystrophy 1 (DMPK) is reported to play a role in cardiac pathophysiology. To gain insight into the molecular mechanisms modulated by DMPK, we characterize the impact of DMPK ablation in the context of cardiac β-adrenergic function. Our data demonstrate that DMPK knockout mice present altered β-agonist-induced responses and suggest that this is due, at least in part, to a reduced density of β(1)-adrenergic receptors in cardiac plasma membranes.

SUBMITTER: Llagostera E 

PROVIDER: S-EPMC3422658 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature