Home General Physiology and Biophysics 2011 General Physiology and Biophysics Vol.30, No.3, p.263–270, 2011

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Quarterly, 80 pp. per issue
Founded: 1982
ISSN  1338-4325 (online)

Published in English

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General Physiology and Biophysics Vol.30, No.3, p.263–270, 2011

Title: Modulations of behavioral consequences of minor cortical ischemic lesion by application of free radicals scavengers
Author: Kateryna Deykun, Marie Pometlova, Barbora Schutova, Jan Mares

Abstract: Functional and morphological consequences of ischemic lesions are partially related to the production of reactive oxygen species (ROS). The aim of the study was to create a unilateral photothrombic lesion with minimal morphological changes and minor sensorimotor and cognitive deficits and also to test whether the application of ROS scavengers after the end of induction of ischemia had improved the functional outcome.
Adult Wistar male rats were randomly divided into five groups: naive control, sham operated animals, animals with induced ischemia, and two groups of animals with induced ischemia and subsequent ROS scavenger application –melatonin or tempol. The group subjected to ischemia showed a significant decline in performance in sensorimotor tests and the Morris water maze (MWM) test, compared to control animals. Tempol (50 mg/kg, i.p.) did not improve sensorimotor function and did not change spatial learning. Melatonin (100 mg/kg, i.p.), on the contrary, resulted in a significant improvement in animals’ performances. All the ischemia subjected animals had increased speed of swimming in the MWM test, compared to the control group.
Our findings showed that subsequent application of ROS scavengers improve ischemia outcomes, with melatonin being more potent. Conversely, neither melatonin, nor tempol decreased swimming speed cased by ischemia.

Keywords: Cortical ischemia — Cognitive impairment — Behavior — ROS scavenger
Year: 2011, Volume: 30, Issue: 3 Page From: 263, Page To: 270

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