This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Bull, J. M. C. Search for Related Content PubMed PubMed Citation Articles by Bull, J. M. C.

An Update on the Anticancer Effects of a Combination of Chemotherapy and Hyperthermia¹

University of Texas Health Science Center—Houston, Hematology/Oncology Division, Houston, Texas 77030

Hyperthermia combined with chemotherapy is a complicated and poorly understood area, but one that portends great biological and clinical interest. The interrelationship of heat to vascular supply of tumor and normal organs that metabolize chemotherapy agents is complicated. The evocation of thermotolerance by chemical agents is a largely unexplored area. A class of chemotherapy agents that increase in cytotoxicity linearly with increasing temperature are the alkylating agents cisplatinum, mitomycin C, and mitoxantrone. A class of chemotherapy agents that increase in cytotoxicity only after a threshold temperature above 42° are Adriamycin, bleomycin, and actinomycin D. Time sequencing of heat and Adriamycin affects cytotoxicity, implying a membrane effect of the heat and drug interaction. A new class of drugs thought not to be chemotherapy drugs because they are not cytotoxic at 37° but are cytotoxic at >41.5° provides a new area of research. Chemotherapy agents that do not change in cytotoxicity with heat include the Vinca alkaloids, amsacrine, and 5-fluorouracil. In order to examine the complex interaction of heat and chemotherapy agents, whole animal models of tumor and normal tissue effects are extremely important.

¹ Presented at the Workshop Conference on Hyperthermia in Cancer Treatment, March 19 to 21, 1984, Tucson, AZ.