Employing enhanced chemiluminescence in luminol-p-iodophenol peroxidase system and coumarine-3-carboxylic acid, it was shown that guanosine-5'-monophosphate (GMP) appreciably reduces formation of H₂O₂ and hydroxyl radicals induced by x-ray irradiation. Using immunoenzyme assay, we revealed that GMP lowered 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo) formation in DNA in vitro after irradiation. The results of survival test have shown that mice being injected intraperitoneally with GMP after irradiation with a dose of 7 Gy had better survival rate than the control mice. GMP reduced leucopoenia and thrombocytopenia in irradiated mice. Obtained results give premises that GMP may be promising therapeutic agent for treatment of radiation injuries.
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Asadullina et al. (2010) studied this question.
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