Abstract
Purpose: Hyperthermic intraperitoneal chemotherapy is continuously under evaluation in ovarian cancer. The purpose of the present study was to evaluate the effect of chemotherapy, drug concentration and temperature. Materials and Methods: A human ovarian carcinoma cell line was used. The effect of hyperthermia combined with chemotherapy was analyzed. Results: When hyperthermia was combined with chemotherapy, the 50% lethal dose (LD50) decreased with the duration of exposure. The effect of temperature was similar between 39 and 43°C for a 30-min exposure. For a 60- to 90-min exposure, the LD50 was equivalent between 38 and 43°C. Beyond 40°C, an increase in platinum salt concentration was necessary to obtain similar results according to the duration of exposure. Conclusions: The cytotoxic effect of the combination seemed to be potentiated and limited at 40°C.