Metabolic Remodeling Induced by Exercise: Emerging Mechanisms for Myocardial Protection in Cardiovascular Disease

Area of Science:

• Cardiology
• Metabolic research
• Exercise physiology

Background:

• Cardiovascular diseases (CVDs) involve significant cardiomyocyte metabolic disturbances, affecting lipid and glucose metabolism.
• Key regulatory systems like fatty acid transport and the AMPK/eNOS axis are dysfunctional in CVDs.
• Abnormalities in myocardial metabolism are central to the progression of various cardiovascular pathologies.

Purpose of the Study:

• To review how exercise training modulates myocardial metabolism in CVDs.
• To explore the mechanisms by which exercise impacts cardiac energy homeostasis and injury.
• To discuss the potential for disease-specific exercise interventions targeting metabolic pathways.

Main Methods:

• Literature review of studies on exercise, metabolism, and cardiovascular diseases.
• Analysis of molecular and cellular mechanisms of exercise's effects on the heart.
• Synthesis of evidence on exercise's impact on metabolic pathways like PGC-1α and PPAR-α.

Main Results:

• Exercise training enhances substrate utilization and activates key metabolic pathways (PGC-1α, PPAR-α).
• Improved myocardial energy homeostasis and reduced cardiac injury are observed with exercise.
• Distinct CVDs present unique metabolic profiles, suggesting tailored exercise approaches.

Conclusions:

• Exercise training is a potent modulator of cardiomyocyte metabolism, beneficial across various CVDs.
• Exercise interventions can potentially delay or reverse disease progression by optimizing cardiac metabolism.
• Disease-specific metabolic abnormalities in CVDs open avenues for targeted, individualized exercise therapies.