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Title: The effect of x rays, DTPA, and aspirin on the absorption of plutonium from the gastrointestinal tract of rats

Journal Article · · Radiat. Res.; (United States)
DOI:https://doi.org/10.2307/3575866· OSTI ID:5504545

To measure the effect of radiation on plutonium transport, rats that were exposed to 250-kVp X rays were given /sup 238/Pu 3 days afterwards by either gavage or injection into a ligated segment of the duodenum. In a second group of experiments, rats were either injected intraduodenally with /sup 238/Pu-DTPA or administered the chelate intravenously and the /sup 238/Pu by gavage. In a third experiment, rats that had been gavaged with 200 or 400 mg/kg/day of aspirin for 2 days were injected intragastrically with /sup 238/Pu nitrate. Results of the first experiment showed a dose-dependent increase in /sup 238/Pu absorption between 800 and 1500 rad of lower-body X irradiation. Intravenous or intraduodenal injections of DTPA caused a marked increase in /sup 238/Pu absorption but resulted in decreased plutonium deposition in the skeleton and liver. Retention of /sup 238/Pu in the skeleton of rats given aspirin was double that of controls, but the effect on plutonium absorption was less marked than that of DTPA.

Research Organization:
Pacific Northwest Lab., Richland, WA
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5504545
Journal Information:
Radiat. Res.; (United States), Vol. 94:1
Country of Publication:
United States
Language:
English