Dimephosphon radioprotective properties on the model of radiation injury <i>in vivo</i>

Radiation therapy is a commonly used cancer treatment modality. However, its application is limited because of its toxicity to healthy tissue. The search for effective radioprotective agents remains one of the key goals of radiation oncology and radiobiology. This study focuses on experimental modeling of radiation injury in animals and the investigation of Dimephosphon radioprotective properties, a drug exhibiting anti-acidotic, antitumor, and antioxidant activities. It was shown that 14-day administration of the drug at a dose of 750 mg/kg after single-dose (5 Gy) irradiation of CD-1 mice resulted in a local radioprotective effect, reducing the severity of the radiation-induced injury to the intestinal epithelium and splenic capsule. The results of metabolomic screening revealed that the levels of the key metabolites responsible for antioxidant properties such as alpha-tocopherol, nicotinamide riboside, N-carbamoyl-L-aspartate, and adenylosuccinate were significantly increased, indicating that the Dimephosphon drug provides enhanced antioxidant protection.