ISSN 2410-7751 (Print)
ISSN 2410-776X (Online)
"Biotechnologia Acta" V. 8, No 4, 2015
https://doi.org/10.15407/biotech8.04.063
Р. 63-70, Bibliography 15, English
Universal Decimal Classification: 577.16:614.876
1Palladin Institute of Biochemistry of the National Academy of Sciences of Ukraine, Kyiv
2Chebotarev Institute of Gerontology of Academy of Medical Sciences of Ukraine, Kyiv
The aim of the research was to test the ability of the drug "Metovitan" to prevent the redox balance disturbance in the tissues and thiamine diphosphate irreversible oxidation upon exposure of ionizing radiation on the body. The rats were subjected to a single exposure of the X-ray therapeutic instrument RUM-17 to create a dose of 0.5, 1.0 and 5.0 Gray. Preparation "Metovitan" was administered at a dose of 25 mg per 1 kg body weight for 22–24 h before irradiation. Contents of thiamine diphosphate, reduced SH-groups and reactive oxygen species in blood and brain were determined using previously described methods. It has been shown that the active form of the thiamine diphosphate content in the blood was decreased depending on the doses (from 0.5 to 5.0 Gray). At the same time the content of thiamine diphosphate oxidized form was increased. Furthermore the critical changes occurred in metabolic processes redox state parameters, namely, the level of free SH-groups was reduced and the level of reactive oxygen species was increased. Similar changes were observed in the brain tissue.
The Metovitan single administration to the animals the day before irradiation, at 25 mg per 1 kg of body weight dose, promotes the protection of the intracellular thiamine diphosphate and redox status in animal tissues (blood, brain tissue) from the negative influence of irradiation (at 0.5; 1.0 Gray doses). These results give reason to recommend the drug for treating of the staff that is involved in the elimination of radioactive contamination. To provide the protection from the higher doses, other scheme of the treatment should be probably recommended.
Key words: thiamine diphosphate, reactive oxygen species, effects of ionizing radiation, Metovitan.
© Інститут біохімії ім. О. В. Палладіна НАН України, 2015
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