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- W2186352302 abstract "Background. The toxic effect of exposure to cadmium and copper is a result of their concentrations and interac− tions in the body. Free radical mechanisms and disorders of zinc metabolism have been implicated in the damage of kidneys caused by Cd and Cu. Physical exercise causes the oxidative stress and also changes the metal distrib− ution and disturbs its metabolism. On the other hand, moderate physical training influences favourably on the antioxidative protection and can reduce the toxic effect caused by cadmium and copper. Objectives. The aim of this study was to investigate the influence of both physical training and intoxication with cadmium, copper, and cadmium and copper simultaneously on the concentrations of metals (Cd, Zn, Cu) in the blood and kidneys; the concentration of indicators of oxidative stress (malonyldialdehyd (MDA), sulfhydryl groups) in the kidneys of rats; and the changes in some antioxidant components such as: superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and reduced glutathione (GSH). Material and Methods. Fifty−four rats (female, Buffalo strain) were split into 9 groups of 6 rats each. One group represented the control and eight groups were intoxicated with cadmium (50 ppm Cd in drinking water) and/or cop− per (0.5 or 2.5 Cu mg/kg m.b., intraperitioneally, three times a week). Half of the intoxicated groups were subject− ed to physical training. The experiment was carried out over 15 weeks. Results. The training decreased the concentration of Cd in the blood and increased the concentration of zinc and copper in kidneys. The administration of metals, both alone or in combination with physical training, caused a sig− nificant decline of renal content of the sulfhydryl groups (SH groups) and a rise in the content of MDA. The high− est increase of Cd concentration was observed in untrained rats intoxicated with cadmium only. Injecting copper reduced the concentration of cadmium, but increased the oxidative processes. In trained rats intoxicated only with cadmium, the concentration of Cd in the kidney was lower, and the concentration of GSH, SH groups and the activ− ity of CAT were higher, in comparison with untrained rats. Conclusions. Physical training partially alleviates the oxidative stress induced by metals and increases the con− centration of zinc (a nutrient which protects against toxicity of Cd) in kidneys, especially in rats treated only with Cd. The combination of physical training, cadmium and a high dosage of copper, considerably intensifies the oxidative stress in the kidneys of rats (Adv Clin Exp Med 2007, 16, 4, 479–491)." @default.
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- W2186352302 date "2007-01-01" @default.
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- W2186352302 title "Influence of Physical Training on Level of Oxidative Damages in Kidneys of Rats Intoxicated with Cadmium as Well as Simultaneously Cadmium and Copper Wpływ treningu fizycznego na poziom uszkodzeń oksydacyjnych w nerkach szczurów intoksykowanych kadmem oraz jednocześnie kadmem i miedzią" @default.
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