ACUTE MYOCARDIAL ISCHAEMIA-REPERFUSION: THE ROLE OF NITRIC OXIDE SYSTEM
A.A. Moibenko, M.Y. Yuzkiv, L.V. Tumanovska, A.V. Kotsuruba
- A.A. Bogomoletz Institute of Physiology National Academy of Sciences of Ukraine, Kiev
Abstract
In experiments on the closed-chest dogs it was shown that NOS inhibition resulted in the significant alterations of hemodynamic indices (coronary and peripheral vascular resistance, cardiac output and heart rate) under local myocardial ischemia/reperfusion in comparison with control experiments. At the first time it was shown that NOS inhibition activated the aoutofagic destruction of cardiomyocytes in the ischemic myocardium and could reduce an area of functionally active myocardium. L-arginine administration attenuated cardioand hemodynamic disturbances, that substantially improved the course of ischemia/reperfusion, diminished the ultrastructural changes in myocardium and prevented development of autophagic programmed cell death.
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