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Cardioprotective effect of histidine-containing dipeptides in pharmacological cold cardioplegia

L A Bokeriya1, A A Boldyrev, R R Movsesyan

  • 1A. N. Bakulev Institute of Cardiovascular Surgery, Russian Academy of Medical Sciences, Moscow.

Bulletin of Experimental Biology and Medicine
|December 2, 2008
PubMed

Insights

Histidine-containing dipeptides in cardioplegic solutions enhance heart protection during hypothermic ischemia. These natural dipeptides increase myocardial buffer capacity, providing an additional anti-ischemic effect for prolonged procedures.

Area of Science:

  • Cardiology
  • Biochemistry
  • Physiology

Background:

  • Cardioplegic solutions are crucial for myocardial protection during cardiac surgery.
  • Ischemia and hypothermia pose significant risks to heart tissue.
  • Histidine-containing dipeptides are known for their buffering properties.

Purpose of the Study:

  • To evaluate the cardioprotective effects of a cardioplegic solution utilizing histidine-containing dipeptides.
  • To assess the impact of these dipeptides on isolated rat hearts subjected to hypothermia and prolonged ischemia.

Main Methods:

  • Isolated rat heart model.
  • Application of a cardioplegic solution containing histidine-containing dipeptides.
  • Induction of hypothermia and long-term ischemia.

Main Results:

  • The cardioplegic solution demonstrated cardioprotective effects.
  • Use of natural dipeptides increased the buffer capacity of myocardial cells.
  • An additional anti-ischemic effect was observed under prolonged ischemia and hypothermia.

Conclusions:

  • Cardioplegic solutions based on histidine-containing dipeptides offer significant cardioprotection.
  • These dipeptides enhance myocardial resilience against ischemic and hypothermic injury.
  • Natural dipeptides represent a promising strategy for improving cardiac surgical outcomes.

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