Arruda-Neto JDT, Guevara MVM, Nogueira GP, Saiki M, Cestari AC, Shtejer K, Deppman A, Pereira Filho JW, Garcia F, Geraldo LP, Gouveia AN, Guzmán F, Mesa J, Rodriguez O, Semmler R, Vanin VR. Long-term accumulation of uranium in bones of Wistar rats as a function of intake dosages.
RADIATION PROTECTION DOSIMETRY 2004;
112:385-393. [PMID:
15466919 DOI:
10.1093/rpd/nch405]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Groups of Wistar rats were fed with ration doped with uranyl nitrate at concentration A ranging from 0.5 to 100 ppm, starting after the weaning period and lasting until the postpuberty period when the animals were sacrificed. Uranium in the ashes of bones was determined by neutron activation analysis. It was found that the uranium concentration in the bones, as a function of A, exhibits a change in its slope at approximately 20 ppm-a probable consequence of the malfunctioning of kidneys. The uranium transfer coefficient was obtained and an analytical expression was fitted into the data, thus allowing extrapolation down to low doses. Internal and localized doses were calculated. Absorbed doses exceeded the critical dose, even for the lowest uranium dosage.
Collapse