Selenium content and distribution in rat tissues irradiated with gamma rays |
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Authors: | Ivana S Djujic Olga Jozanov-Stankov Miodrag Mandic Miroslav Demajo Miroslav M Vrvic |
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Institution: | (1) Institute of Chemistry, Technology, and Metallurgy IOHBIA, Njegoseva 12, 11000 Belgrade, Yugoslavia;(2) Institute of Nuclear Sciences, Vinca, Belgrade;(3) Faculty of Chemistry, University of Belgrade, Yugoslavia |
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Abstract: | The effects of supplementation with selenous yeast and ionizing radiation on selenium (Se) content and distribution were evaluated
in rat tissues (liver, kidney, spleen, heart, muscle, blood, front brain, hind brain, hypothalamus, pituitary, adrenal glands,
testes, and hair). This study had 16 Se-supplemented (0.5 μg Se/d) and 16 placebo adult male Wistar rats. One half of the
animals (eight Se-supplemented and eight placebos) were irradiated with a single dose of 4.2 Gy from a Co-60 source and sacrificed
7 d after irradiation along with nonirradiated animals and analyzed for Se content determination. The data obtained showed
that selenous yeast supplementation increased Se levels in rat tissues (highest increases in hypothalamus, 161%; hind brain,
126%; spleen, 110%; and adrenal gland, 105%). Ionizing radiation induced significant changes in Se content and distribution
(decrease in liver, blood, hair, femoral muscle, spleen, and hypothalamus; increase in kidney, testes, adrenal glands, and
brain of placebo group). Supplementation with selenous yeast reduces changes in Se content and distribution after irradiation.
It seems that the animal tissue susceptibility to oxidative damage may be correlated to their ability to retain Se in tissues. |
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Keywords: | Selenous yeast ionizing radiation tissue Se rats |
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