Comparison of hyperthermia and adrenaline to enhance the intratumoral accumulation of cisplatin in a murine model of peritoneal carcinomatosis.

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Date publication

janvier 2011

Auteurs

Membres identifiés du Cancéropôle Est :
Pr GHIRINGHELLI François, Dr LADOIRE Sylvain


Tous les auteurs :
Facy O, Radais F, Ladoire S, Delroeux D, Tixier H, Ghiringhelli F, Rat P, Chauffert B, Ortega-Deballon P

Résumé

BACKGROUND: The best method to deliver intraperitoneal chemotherapy (IPC) for peritoneal carcinomatosis from ovarian cancer is not well defined. The aim of this study was to assess the ability of hyperthermia and adrenaline to enhance the intratumoral accumulation of cisplatin in a rat model of peritoneal carcinomatosis. METHODS: Four groups of 5 BDIX rats with ovarian peritoneal carcinomatosis underwent IPC with 30 mg/l of cisplatin according to the following conditions: normothermia at 37 degrees for 1 or 2 hours, hyperthermia at 42 degrees C for 1 hour or normothermia at 37 degrees C for 2 hours with 2 mg/l adrenaline. Tissue platinum content was measured by atomic absorption spectroscopy. The effect of hyperthermia, adrenaline and the duration of exposure to the drug was measured in vivo (tissue concentration of platinum in tumor, abdominal and extra abdominal tissues) and in vitro (cytotoxicity on human ovarian cancer cells). RESULTS: In vitro, hyperthermia and longer exposure enhanced the accumulation and the cytotoxic effect of cisplatin on cancer cells. In vivo, only the 2 hours treatment with adrenaline resulted in increased platinum concentrations. The rats treated with adrenaline showed significantly lower concentrations of cisplatin in extra peritoneal tissues than those treated with hyperthermia. CONCLUSION: Adrenaline is more effective than hyperthermia in order to enhance the intratumoral concentration of cisplatin in rats with peritoneal carcinomatosis from ovarian origin. It may also decrease the systemic absorption of the drug.

Référence

J Exp Clin Cancer Res. 2011 Jan 7;30:4.