Original Article Oxidative stress induced in rat brain by a combination of 3-nitropropionic acid and global ischemia
Dusan Dobrota, Tatiana N. Fedorova, Maria S. Stepanova, Eva Babusikova, Dagmar Statelova, Zuzana Tatarkova, Sergey S. Stvolinsky, Alexander A. Boldyrev
Department of Medical Biochemistry, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic; Laboratory of Clinical Neurochemistry, Research Center of Neurology RAMS, Moscow, Russia; International Center for Biotechnology, Lomonosov Moscow State University, Moscow, Russia; Clinic of Stomatology and Maxillofacial Surgery, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic.
Received February 25, 2010, accepted May 11, 2010, available online May 15, 2010
Abstract: In our investigation, we describe the complex model of brain oxidative stress consisted of combination of experimental brain ischemia and energy metabolism violation induced by irreversible inhibitor of mitochondrial succinate dehydrogenase, 3-nitropropionate (3-NPA). 3-NPA causes selective degeneration of striatum neurons, which is extremely sensitive to energy deficit. This complex model allows revealing not only biochemical but also neurological symptoms in experimental animals that permits proper estimation of protective effect of different drugs on animal status. Combination of global ischemia induced by 3-vessel occlusion of major arteries supplys rat brain and subsequent 5-day reperfusion with intraperitoneal injection of 3-nitropropionic acid induces vigorous oxidative stress in brain tissues accompanied by evident neurological symptoms in Wistar rats. Such a combination of damaging factors may be considered as a new complex experimental model of brain oxidative stress permitting the evaluation of neuroprotective effect of potential therapeutic agents. Using this model, protective effect of neuropeptide carnosine was demonstrated which is in agreement with previous data. (IJCEM1002006).
Key words: Brain global ischemia, 3-nitropropionic acid, oxidative stress, carnosine
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