Regulation of cell death in the cardiovascular system
1Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, United States.
Insights
Aberrant cardiomyocyte cell death drives heart disease. Understanding these regulated cell death mechanisms in myocardial infarction and other cardiac conditions is key to developing new therapies for heart health.
Area of Science:
- Cardiovascular Biology
- Cell Death Mechanisms
- Cardiac Pathophysiology
Background:
- The adult heart is a post-mitotic organ where cardiomyocyte cell death is maladaptive.
- Heart disease, the leading global cause of death, is fundamentally linked to aberrant cardiomyocyte cell death.
- Cardiomyocyte loss underlies various cardiovascular diseases and fatalities.
Purpose of the Study:
- To discuss cell death mechanisms during cardiac development, aging, and disease.
- To explore regulated cell death pathways in myocardial infarction (MI).
- To examine cardiomyocyte cell death in heart failure, myocarditis, and cardiotoxicity.
Main Methods:
- Review of existing literature on cardiac cell death.
- Analysis of cell death pathways implicated in myocardial infarction.
- Exploration of mechanisms in heart failure, myocarditis, and drug-induced cardiotoxicity.
Main Results:
- Cardiomyocyte cell death, particularly in MI, is a multifaceted and regulated process.
- Multiple cell death pathways are involved in MI, with potential interplay.
- Cell death mechanisms are critical in heart failure, myocarditis, and cardiotoxicity.
Conclusions:
- Understanding regulated cardiomyocyte cell death is crucial for treating cardiovascular diseases.
- Inhibiting cardiomyocyte cell death offers significant therapeutic potential for improving heart health and longevity.
- Further research into cell death pathways can lead to novel cardiac therapies.
Abstract:
The adult heart is a post-mitotic terminally differentiated organ; therefore, beyond development, cardiomyocyte cell death is maladaptive. Heart disease is the leading cause of death in the world and aberrant cardiomyocyte cell death is the underlying problem for most cardiovascular-related diseases and fatalities. In this chapter, we will discuss the different cell death mechanisms that engage during normal cardiac development, aging, and disease states. The most abundant loss of cardiomyocytes occurs during a myocardial infarction, when the blood supply to the heart is obstructed, and the affected myocardium succumbs to cell death. Originally, this form of cell death was considered to be unregulated; however, research from the last half a century clearly demonstrates that this form of cell death is multifaceted and employees various degrees of regulation. We will explore all of the cell death pathways that have been implicated in this disease state and the potential interplay between them. Beyond myocardial infarction, we also explore the role and mechanisms of cardiomyocyte cell death in heart failure, myocarditis, and chemotherapeutic-induced cardiotoxicity. Inhibition of cardiomyocyte cell death has extensive therapeutic potential that will increase the longevity and health of the human heart.
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