Treatment of peritoneal carcinomatosis using carboplatin-loaded hydroxyapatite particles.

Unlabelled: The anti-tumor effects and tissue distribution of carboplatin (CBDCA) incorporated into hydroxyapatite (HAP) particles was studied.

Materials And Methods: Seven days after the intraperitoneal (i.p.) implantation of AH130 tumor cells into Donryu rats, the animals were randomized into four groups: group I was treated with saline i.p.; Group II, with CBDCA i.v.; group III with CBDCA i.p.; and group IV with HAP-CBDCA i.p.

Results: The survival rate of group IV was better than that of the other groups (p < 0.05). The area under the ascitic platinum concentration-time curve and tissue concentrations of platinum in the omentum after 24 hours of treatment were higher in group IV than in groups II or III (p < 0.05). The platinum concentrations in the kidneys of group IV were lower than in group III (p < 0.05).

Conclusion: The HAP-CBDCA combination enhances the anti-tumor effects of the drug and reduces the nephrotoxicity in rats with peritoneal carcinomatosis.