Related Experiment Video
Updated: Apr 8, 2026
Intramyocardial Cell Delivery: Observations in Murine Hearts
Published on: January 24, 2014
CaMKII and a failing strategy for growth in heart
1Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, USA. mark-e-anderson@uiowa.edu
Insights
Activation of Ca(2+)/calmodulin-dependent kinase IIdelta is a key step in the progression from heart insult to heart failure in mice. Targeting this pathway may improve therapies for congestive heart failure and sudden cardiac death.
Area of Science:
- Cardiology
- Molecular Biology
- Physiology
Background:
- Systolic left ventricular dysfunction leads to heart failure or sudden cardiac death.
- Myocardial hypertrophy is an early indicator but does not always progress to heart failure.
Discussion:
- Cell signaling pathways are crucial for the transition from myocardial insult to heart failure.
- Activation of Ca(2+)/calmodulin-dependent kinase IIdelta plays a decisive role in this progression.
Key Insights:
- New evidence implicates Ca(2+)/calmodulin-dependent kinase IIdelta activation in heart failure development in mice.
- This finding is crucial for understanding the mechanisms driving heart failure progression.
Outlook:
- Developing targeted therapies for these cell signaling pathways is a public health priority.
- Further research may lead to novel treatments for preventing heart failure and sudden cardiac death.
Abstract:
Patients with systolic left ventricular dysfunction die progressively from congestive heart failure or die suddenly from cardiac arrhythmias. Myocardial hypertrophy is an early event in most forms of heart failure, but the majority of patients with myocardial hypertrophy do not develop heart failure. Developing improved therapies for targeting the cell signaling pathways that enable this deadly transition from early myocardial insult to heart failure and sudden death is a key goal for improving public health. In this issue of the JCI, Ling and colleagues provide new evidence that activation of the multifunctional Ca(2+)/calmodulin-dependent kinase IIdelta is a decisive step on the path to heart failure in mice (see the related article beginning on page 1230).
