Resumo

HOLANDA, Cecília Maria de Carvalho Xavier et al. Effect of paclitaxel (Taxol^®) on the biodistribution of sodium pertechnetate (Na^99mTcO₄) in female Wistar rats. Braz. arch. biol. technol. [online]. 2008, vol.51, n.spe, pp. 191-196. ISSN 1516-8913.  http://dx.doi.org/10.1590/S1516-89132008000700031.

The evidence that natural or synthetic drugs can affect the biodistribution of radiopharmaceuticals (radiobiocomplexes) in setting of nuclear medicine clinic is already known. We studied the effect of Paclitaxel, an anti-neoplastic agent for the treatment of solid tumors, on the biodistribution of Na^99mTcO4 in female rats. Paclitaxel (1mg/mL/week) was administered into animals in single dose during 3 weeks, with interval of 1 week among them. The control group received NaCl 0.9% solutions by the same via. One hour after the last dose, it was injected Na^99mTcO4 in the animals. The percentage of activity per gram (%ATI/g) and biochemical and hematological determinations were performed. A significant increase were found in alanine aminotransferase, aspartate aminotransferase, glucose and in the %ATI/g of some organs (ovaries, uterus, vagina, breasts, large intestine and liver).These results can be associated, probably, to the capacity of paclitaxel to alter the biodistribution of Na^99mTcO4 and the metabolism of glucose and hepatic enzymes.

Palavras-chave : paclitaxel; drug interaction; radiopharmaceuticals; Na^99mTcO4; antitumoral drug; cancer.