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Metabolic cardioprotection by pyruvate: recent progress.

Robert T Mallet1, Jie Sun, E Marty Knott

  • 1Department of Integrative Physiology, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107-2699, USA. malletr@hsc.unt.edu

Experimental Biology and Medicine (Maywood, N.J.)
|June 30, 2005
PubMed
Summary

Pyruvate, a metabolic fuel and antioxidant, offers significant cardioprotection by enhancing heart function and energy. Research supports its clinical use for various cardiac conditions, including bypass surgery and heart failure.

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Area of Science:

  • Biochemistry
  • Cardiology
  • Metabolic Research

Background:

  • Pyruvate is a natural metabolic fuel and antioxidant in cardiac and other tissues.
  • Supraphysiological concentrations of pyruvate demonstrate diverse cardioprotective effects.

Purpose of the Study:

  • To review and discuss recent research on pyruvate's inotropic and cardioprotective mechanisms.
  • To highlight pyruvate's potential for clinical applications in cardiac conditions.

Main Methods:

  • Review of basic and clinically oriented research on pyruvate.
  • Analysis of pyruvate's effects on cardiac contractile performance, energy state, and antioxidant systems.
  • Investigation of pyruvate's role in sarcoplasmic reticular Ca2+ transport and mitigation of myocardial injury.

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Main Results:

  • Pyruvate enhances cardiac contractile performance and myocardial energy state.
  • It bolsters endogenous antioxidant systems and protects against ischemia-reperfusion injury and oxidant stress.
  • Pyruvate improves sarcoplasmic reticular Ca2+ transport and mitigates myocardial injury.

Conclusions:

  • Pyruvate exhibits significant cardioprotective properties through multiple mechanisms.
  • Research provides a foundation for clinical pyruvate therapy in settings like cardiopulmonary bypass, resuscitation, stunning, and heart failure.