Cardiac remodeling and failure: from molecules to man (Part I)

Area of Science:

• Cardiovascular Biology
• Pathophysiology
• Regenerative Medicine

Background:

• Heart failure (HF) is a common, coordinated response to cardiac injury.
• Cardiac remodeling (CR) is central to HF progression, involving changes in cardiomyocyte size, shape, and function.
• Existing understanding of CR mechanisms is insufficient to explain all cellular and molecular changes in HF.

Purpose of the Study:

• To review current understanding of cardiac remodeling in heart failure.
• To identify limitations in existing mechanistic viewpoints and therapeutic strategies.
• To highlight the need for novel biomolecules and mechanisms for controlling CR.

Main Methods:

• Literature review of traditional and contemporary concepts of cardiac remodeling.
• Analysis of neurohormonal and cytokine hypotheses of heart failure.
• Examination of data on cardiomyocyte regeneration and renewal.

Main Results:

• Traditional concepts of cellular remodeling are based on alterations in cell size, shape, and contractile work.
• Programmed cell death and cardiomyocyte regeneration are key areas of investigation.
• Current neurohormonal and cytokine hypotheses inadequately explain HF progression.

Conclusions:

• Existing therapeutic strategies for HF, based on current concepts, are insufficient.
• Controlling cell death and enhancing cardiomyocyte renewal offer unprecedented therapeutic potential.
• Further definition of novel biomolecules and mechanisms is crucial for controlling CR and developing effective HF treatments.