“…Epirubicin (4'-epidoxorubicin) and pirarubicin (4'-O-tetrahydropyranyldoxorubicin) have been brought into routine clinical usage after it was observed that they produced less cardiotoxicity than doxorubicin and daunorubicin, the reference molecules, in both preclinical models and early clinical trials (Ganzina, 1983;Maehara et al, 1989;Herait et al, 1992). In addition, several strategies for reducing cardiotoxicity of anthracyclines have been proposed, including the administration of a-tocopherol (Julicher et al, 1986;Mimnaugh et al, 1981), N-acetylcysteine (Villani et al, 1990), glutathione (Villani et al, 1990), and ICRF-187 or dexrazoxane (Herman & Ferrans, 1986;Speyer et al, 1988). This last molecule has been shown to provide a prolonged protection against anthracycline cardiotoxicity in rabbits and dogs (Herman & Ferrans, 1986;Herman et al, 1988) and to prevent the doxorubicin-induced decrease of the left ventricular ejection fraction in human subjects (Speyer et al, 1988;.…”