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Center for Vitamins and Cancer Research, Department of Radiology, School of Medicine, University of Colorado Health Sciences Center (K.N.P., W.C.C., B.K.), Denver, Colorado
Department of Pathology, University of California (K.C.P.), San Francisco, California
Address reprint requests to: Kedar N. Prasad, PhD, UCHSC, Dept. of Radiology, Box C278, 4200 E. 9th Avenue, Denver, CO 80262. E-mail: Kedar.prasad{at}UCHSC.edu
We have hypothesized that high-dose multiple micronutrients, including antioxidants, as an adjunct to standard (radiation therapy and chemotherapy) or experimental therapy (hyperthermia and immunotherapy), may improve the efficacy of cancer therapy by increasing tumor response and decreasing toxicity. Several in vitro studies and some in vivo investigations support this hypothesis. A second hypothesis is that antioxidants may interfere with the efficacy of radiation therapy and chemotherapy. This hypothesis is based on the concept that antioxidants will destroy free radicals that are generated during therapy, thereby protecting cancer cells against death. None of the published data on the effect of antioxidants in combination with radiation or chemotherapeutic agents on tumor cells supports the second hypothesis. Scientific rationale in support of a micronutrient protocol to be used as an adjunct to standard or experimental cancer therapy is presented.
Key words: antioxidants, cancer therapy, hyperthermia, sodium butyrate, cAMP
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