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  • Title: Antineoplastic activity of two taxol derivatives on an ovarian tumor xenografted into nude mice.
    Author: Riondel J, Jacrot M, Nissou MF, Picot F, Bériel H, Mouriquand C, Potier P.
    Journal: Anticancer Res; 1988; 8(3):387-90. PubMed ID: 2898915.
    Abstract:
    In order to compare the antineoplastic activities of taxol A, taxol B, a mixture of the two (taxol A 72%) and vinblastine, a human ovarian tumor serially transplanted into 104 female athymic mice was used. In the first experiment (11th passage), the antineoplastic activities of taxol A, taxol B and the mixture taxol AB were tested. The same dose was used in each case (12.5 mg/kg i.e. 1/20 of the evaluated LD50 value). It was administered subcutaneously for 5 consecutive days. Three courses of treatment were performed, with 2 rest periods of 1 week in between. All the taxol derivatives produced a statistically significant delay in the tumor growth. However, taxol B had the lowest chemotherapeutic response. In the second experiment (18th passage), different dose levels were administered (mixture 12.5 mg/kg/day x 4 - taxol A 8.8. mg/kg/day x 4 - taxol B 3.5 mg/kg/day x 4 - vinblastine 0.5 mg/kg/day x 2). For all the taxol derivatives 4 treatment courses with 3 rest periods of 4 days were used, and for vinblastine 4 treatment courses with 3 rest periods of 1 week. At the end of the second experiment, vinblastine, taxol A and a mixture of the two showed similar significant activity, whereas no objective antitumor response was observed following the taxol B treatment at the dose level chosen. The experimental results obtained clearly demonstrate that, in the taxane system, the greatest degree of antineoplastic activity can be attributed to taxol A.
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