[Studies on the toxicity of 9-hydroxyellipticine].
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Biomedical subjects
Publications and source records attributed to C Gosse.
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The designing of DNA intercalating drugs with high DNA affinity in the series of ellipticine has led to a new antitumoral agent, 9-hydroxyellipticine, which has a high DNA affinity, a high activity on L 1210 mice leukemia, and a lack of toxicity at therapeutic dose. The possible correlations among chemical structure, DNA reactivity, and pharmacological activity of DNA intercalating drugs are discussed.
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L1210 leukemia was used to evaluate the antitumour activity in vivo of CY233 (NSC 609224) a new water-soluble nitrosoureido derivative of deoxysugar currently being studied in preclinical trials. The antitumour activity of CY233 is dose-dependent with the same large therapeutic index whatever the route of administration (I.P., I.V., per os). Thus starting from a single dose of 10 mg/kg (less than 25% of the LD50), 80% to 100% of mice survive at 120 days, whether the drug is being administered I.V., I.P. or P.O. These results clearly emphasize the very original and promising potentiality of CY233 among the series of alkylating agents, and more precisely nitrosoureas.