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Myocyte hypertrophy and apoptosis: a balancing act
Vanessa P M van Empel1, Leon J De Windt
1Hubrecht Laboratory and Interuniversity Cardiology Institute Netherlands, Royal Netherlands Academy of Arts and Sciences, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.
Cardiovascular Research
|July 28, 2004
Summary
Heart myofiber enlargement (hypertrophy) can normalize tension but often leads to heart failure. Signaling pathways controlling myocyte growth also impact survival, balancing life and death.
Area of Science:
- Cardiovascular Biology
- Molecular Cardiology
Background:
- The heart enlarges myofibers in response to biomechanical stress.
- Myocardial hypertrophy, while normalizing wall tension, is often maladaptive, leading to heart failure or sudden death.
Purpose of the Study:
- To review insights into hypertrophic signaling pathways.
- To explore how these pathways balance myocyte life and death.
- To inform therapeutic strategies for heart failure.
Main Methods:
- Review of current scientific literature on hypertrophic signaling.
- Analysis of signaling cascades controlling myocyte growth and survival.
- Synthesis of information on the dichotomous roles of these pathways.
Main Results:
- Signaling pathways governing myocyte growth also promote myocyte survival against death stimuli.
- Hypertrophic signaling pathways have a dual role in myocyte hypertrophy, survival, and death.
- Understanding this balance is crucial for developing effective heart failure therapies.
Conclusions:
- Modulating intracellular signaling pathways is a promising approach for preventing and treating heart failure.
- Therapeutic strategies must consider the dual actions of these pathways on myocyte hypertrophy, survival, and death.
- Targeting these pathways requires a nuanced approach to balance beneficial and detrimental effects.