Mitigation of Radiation-Induced Lung Injury with EUK-207 and Genistein: Effects in Adolescent Rats
2013
Exposure of civilian populations to radiation due to accident, war or terrorist act is an increasing concern. The lung is one of the more radiosensitive organs that may be affected in people receiving partial-body irradiation and radiation injury in lung is thought to be associated with the development of a prolonged inflammatory response. Here we examined how effectively damage to the lung can be mitigated by administration of drugs initiated at different times after radiation exposure and examined response in adolescent animals for comparison with the young adult animals that we had studied previously. We studied the mitigation efficacy of the isoflavone genistein (50 mg/kg) and the salen-Mn superoxide dismutase-catalase mimetic EUK-207 (8 mg/kg), both of which have been reported to scavenge reactive oxygen species and reduce activity of the NFkB pathway. The drugs were given by subcutaneous injection to 6- to 7-week-old Fisher rats daily starting either immediately or 2 weeks after irradiation with 12 ...
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