Myocardial G protein-coupled receptor kinases: implications for heart failure therapy.

Published

Journal Article (Review)

The beta-adrenergic signaling cascade is an important regulator of myocardial function. Significant alterations of this pathway are associated with several cardiovascular diseases, including congestive heart failure (CHF). Included in these alterations is increased activity and expression of G protein-coupled receptor kinases (GRKs), such as the beta-adrenergic receptor kinase (beta ARK1), which phosphorylate and desensitize beta-adrenergic receptors (beta ARs). A body of evidence is accumulating that suggests that GRKs, in particular beta ARK1, are critical determinants of cardiac function under normal conditions and in disease states. Transgenic mice with myocardial-targeted alterations of GRK activity have shown profound changes in the in vivo functional performance of the heart. Included in these studies is the compelling finding that inhibition of beta ARK1 activity or expression significantly enhances cardiac function and potentiates beta AR signaling in failing cardiomyocytes. This article summarizes the advances made in the study of beta ARK1 in the heart and addresses its potential as a novel therapeutic target for CHF.

Full Text

Duke Authors

Cited Authors

  • Iaccarino, G; Lefkowitz, RJ; Koch, WJ

Published Date

  • September 1999

Published In

Volume / Issue

  • 111 / 5

Start / End Page

  • 399 - 405

PubMed ID

  • 10519160

Pubmed Central ID

  • 10519160

International Standard Serial Number (ISSN)

  • 1081-650X

Language

  • eng

Conference Location

  • United States