Concern regarding the potential for radiation exposure from accidents or nuclear and radiologic terrorism is increasing. The purpose of this study was to determine whether the addition of minimal supportive care consisting of hydration or nutritional gels could be used to reduce mortality in mice exposed to 60Co -radiation. Male CD2F1 mice received 0, 8.50, or 9.25 Gy 60Co at a dose rate of 0.6 Gy/min. These groups were further divided into 3 treatment groups that—in addition to pelleted food and water—received no supportive care, hydration gel, or nutritional gel. Overall survival, mean survival time, consumption of pelleted food and gel, and body weight were recorded for 30 d. Radiation caused dose-dependent decreases in overall survival, consumption of pelleted food and supplemental gel, and body weight. However, at each radiation dose (0, 8.50, 9.25 Gy), the type of supportive care did not modify overall survival, mean survival time, or changes in body weight. These results demonstrate that hydration and nutritional gels were not effective methods of supportive care after high-dose total body irradiation in mice.
Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, Maryland 2:
Biostatistics Consulting Center, Uniformed Services University of the Health Sciences, Bethesda, Maryland
Publication date: May 1, 2010
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