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Cardioprotection from metabolism to molecules to certainties
1Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, University of Cape Town, Cape Town. lionel.opie@uct.ac.za
Summary
The heart has evolved natural protective mechanisms against damage, including metabolic strategies like glucose-insulin-potassium (GIK) and molecular pathways such as RISK and SAFE, which may also be activated by exercise.
Area of Science:
- Cardiovascular Physiology
- Molecular Cardiology
- Evolutionary Medicine
Background:
- The heart possesses ancient metabolic and molecular protective pathways.
- Acute coronary syndromes can be mitigated by early interventions.
- Free-fatty acid levels are a target for cardioprotection.
Purpose of the Study:
- To explore the evolutionary origins of cardiac protective mechanisms.
- To highlight the role of metabolic and molecular pathways in cardioprotection.
- To investigate the potential of exercise to activate these pathways.
Main Methods:
- Review of evolutionary and molecular biology.
- Analysis of clinical data on glucose-insulin-potassium (GIK) therapy.
- Hypothetical modeling of exercise-induced pathway activation.
Main Results:
- Metabolic protection includes GIK therapy for acute coronary syndromes, inhibiting harmful free-fatty acids.
- Molecular cardioprotection involves the RISK (Reperfusion Injury Salvage Kinases) and SAFE (Survival Activating Factor Enhancement) pathways.
- These pathways evolved early and may be activated by intense exercise.
Conclusions:
- The heart's protective pathways have deep evolutionary roots.
- Metabolic and molecular strategies offer promising avenues for cardioprotection.
- Intense exercise may represent a natural method for activating cardiac protective pathways.
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