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Is peripheral blood a reliable indicator of acute oxidative stress following heart ischemia and reperfusion?

János Lantos, Gyula Temes, László Göbölös Göbölös, Mohammad T Jaberansari, Elizabeth Rőth Rőth

Med Sci Monit 2001; 7(6): BR1166-1170 :: ID: 507963


Background: Reactive oxygen species (ROS) play a crucial role in membrane damage in ischemic-reperfusion syndromes. The aim of our work was to determine whether blood samples taken from a peripheral vein are a reliable indicator to reflect the development of oxidative stress following acute heart ischemia and reperfusion.
Material and methods: In a dog model, the left descending coronary artery (LAD) was occluded for 60 min followed by 60 minutes of reperfusion. The lipid peroxidation marker malondialdehyde (MDA), endogenous antioxidants reduced glutathione (GSH), the activity of superoxide dismutase (SOD) enzyme and the stimulated radical production of isolated neutrophil granulocytes (PMN) were measured simultaneously from the peripheral vein and the coronary sinus before and at the end of the LAD occlusion, and again during reperfusion.
Results: MDA and SOD values increased during reperfusion. At the end of 1 hour the reperfusion changes in the coronary sinus were significant (p

Keywords: Myocardial Ischemia-reperfusion, Lipid Peroxidation, endogenous antioxidants, granulocyte activation

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750