Pretreatment for four days with coenzyme Q10 (COQ10) reduced the acute toxicity in mice treated with adriamycin. In two sequential protocols, adriamycin allowed only 36 and 42% survival, respectively. Pretreatment with COQ10 allowed 80 and 86% survival, respectively. The differences are significant, p less than 0.05. The mechanism for this reduction in the acute toxicity may be based upon the prevention by the supplementary COQ10 of the inhibition caused by adriamycin to COQ10-dependent enzymes in cardiac and and other tissues. The prospect of diminishing the toxicity of adriamycin in cancer patients remains promising and important.
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