Abstract
Quadrupole-based inductively coupled-mass spectrometry (ICP-MS) with pneumatic nebulization as a means of sample introduction was employed for quantification of platinum in blood and tissue samples of rats with peritoneal carcinomatosis, receiving intraperitoneal treatment with the Pt-containing chemotherapeutic drug oxaliplatin, and in the perfusate solution used for this purpose. The Pt levels were measured for various treatment conditions, i.e., with and without supporting treatment with the drug bevacizumab and at two different temperatures. Limits of detection obtained for platinum in blood and tissue samples were 0.3 and 2.0 pg g(-1) respectively. Evaluation of drug penetration into the tumor, under different conditions of treatment, was carried out via laser ablation-ICP-MS. Quantitative mapping of the Pt distribution in tissue sections of rat was attempted relying on gelatin standards. The results show an influence of the temperature at which the treatment is carried out, while supporting administration of the drug bevacizumab did not seem to affect the results.
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