We consider the peculiarities of free radical oxidation in the skeletal muscle tissues of rats after their successive exposure to gamma-rays and to low-intensity broadband red light. A reduction in the level of protein oxidative modification products in the light-treated samples has been revealed. The changes in peroxidation activity are accompanied with the ultrastructure alteration of striated muscle fibers in the samples treated with light as compared to the control group samples. On the basis of the results obtained, it has been concluded that low-intensity broadband red light may have a radioprotective effect and can be used to correct the damage caused by ionizing radiation.
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