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Cytoplasmic superoxide dismutase activity is a sensitive indicator of the antioxidant status of the rat liver and brain

  • T. V. Sirota
  • M. V. Zakharchenko
  • M. N. Kondrashova
Article
  • 60 Downloads

Abstract

Several parameters of the cytoplasmic enzymatic antioxidant system of the liver and brain of the rat have been investigated under conditions of immobilization stress and of an antioxidant preparation in the diet of animals. These included superoxide dismutase (SOD) and glutathione reductase (GR) activities and nonspecific NADPH oxidation. Only changes in the activity of SOD both in the liver and brain were revealed. In the liver of animals that receive no preparation, a decrease in the activity of SOD after 30-min immobilization and its restoration after a 360-min immobilization were observed. In the brain, the activity of SOD decreased only in preconditioned animals after 30 and 360 min of exposure to stress. In addition, the activity of SOD in the brain of preconditioned animals, both stressed and unstressed, was lower than in the corresponding groups of control animals. It is probable that, under the conditions of immobilization stress, the level of reactive oxygen species (ROS) and as a consequence the activity of SOD decrease. The intake of an antioxidant preparation under these conditions seems to be not correct.

Keywords

superoxide dismutase glutathione reductase immobilization stress brain liver 

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • T. V. Sirota
    • 1
  • M. V. Zakharchenko
    • 1
  • M. N. Kondrashova
    • 1
  1. 1.Institute of Theoretical and Experimental BiophysicsRussian Academy of SciencesPushchino, Moscow regionRussia

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