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Investigation of the protective and treatment effects of vinpocetine in myocardial infarctional with isoprotenol in rats

Taner Guven; Mehmet Ediz Sarihan; Hakan Parlakpinar; Nigar Vardi; Kevser Tanbek.

Abstract
As aim of this study, the knowledge of whether vinpocetine (VINPO) is cardioprotective or not following isoprotenol (ISO) induced cardiac ischemia in rats. In myocard infarction, the one of the responsible mechanisms of injury is oxidative damage and inflammmation. The effect of Vinpo which is the potent antioxidant and anti inflammatory agent aimed to reveal as the biochemical, electrophysiological, and histopathologic parameters. In this study, thirty- two Wistar-Albino male rats (in the estimated weight of 250-400gm.) were divided into four groups, each consisting of eight rats. The group 1 named as sham, no any drug used in this group. Group 2 named as iso group, only isoprotenol was adminestered, the group 3 named as vinpo and iso group, here initially vinpocetine then isopretenol were used, and the group 4 named as iso and vinpo, here initially isoprotenol then vinpocetine were used. For the rats in group 2, in first and second day isoprotenol adminestered at a dose of 120mg/kg using an intraperitoneal injection. At third and fourth day no any drug used. And at fifth day the experiment terminated. For the rats in group 3, at the first and second day Vinponcetine adminestered at adose of 20 mg/kg using an intraperitoneal injection, after 30 minute isoprotenol administered at adose of 120mg/kg using an intraperitoneal injection. At third and fourth day no any drug was used. And at fifth day experiment was terminated. Lastly for the rats in group4, first and second day isoprotenol administered at adose of 120mg/kg using an intraperitoneal injection, at third and fourth day vinpocetine adminestered at adose of 20 mg/kg using an intraperitoneal injection, and at fifth day experiment terminated. Prior to termination of experiment the pulse rate and ECG changes were recorded. After completion of experiment protocols blood samples and cardiac tissue samples were recieved. For the knowledge of effects of vinpocetine experimental miyocardial ischemia induced in rats, and the serum myoglobulin, total creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransferase (AST), alanin aminotransferase (ALT), measured. In myocardial tissue as an antioxidative system and an oxidative stres markers; malonylaldehate (MDA), Superoxidedismutase (SOD), Catalase (CAT), Glutathionperoxidase (GPx), GSH, Total oxidant status (TOS),Total antioxidant status(TAS),Oxidative stres index (OSI) studied. As a result, Vinpocetin showed positive impact on cardiac functions. With all of these for the best clear results, advanced studies are needed.

Key words: Isoproterenol;vinpocetin;rat;heart



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