Sarcomeric dysfunction in heart failure

Cardiovasc Res. 2008 Mar 1;77(4):649-58. doi: 10.1093/cvr/cvm079. Epub 2007 Nov 30.


Sarcomeric dysfunction plays a central role in reduced cardiac pump function in heart failure. This review focuses on the alterations in sarcomeric proteins in diseased myocardium that range from altered isoform expression to post-translational protein changes such as proteolysis and phosphorylation. Recent studies in animal models of heart failure and human failing myocardium converge and indicate that sarcomeric dysfunction, including altered maximum force development, Ca(2+) sensitivity, and increased passive stiffness, largely originates from altered protein phosphorylation, caused by neurohumoral-induced alterations in the kinase-phosphatase balance inside the cardiomyocytes. Novel therapies, which specifically target phosphorylation sites within sarcomeric proteins or the kinases and phosphatases involved, might improve cardiac function in heart failure.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Heart Failure / metabolism*
  • Heart Failure / pathology
  • Heart Failure / physiopathology
  • Humans
  • Muscle Proteins / metabolism*
  • Myocardial Contraction*
  • Myocardium / metabolism*
  • Myocardium / pathology
  • Peptide Hydrolases / metabolism
  • Phosphorylation
  • Protein Isoforms
  • Protein Kinases / metabolism
  • Protein Processing, Post-Translational
  • Sarcomeres / metabolism*
  • Sarcomeres / pathology


  • Muscle Proteins
  • Protein Isoforms
  • Protein Kinases
  • Peptide Hydrolases