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  • Title: Intravesical therapy with vinorelbine tartrate: antitumor activity in orthotopic murine cell carcinoma of the bladder.
    Author: Bonfil RD, Russo DM, Schmilovich AJ, Garcia-Palazzo IB.
    Journal: J Urol; 1997 Sep; 158(3 Pt 1):912-5. PubMed ID: 9258118.
    Abstract:
    OBJECTIVES: To ascertain intravesical vinorelbine tartrate (VNR) antitumor activity against MB-49, a murine transitional cell carcinoma of the bladder (TCC), in an in vivo setting. MATERIALS AND METHODS: C57B1/6J female mice were intravesically implanted with 5 x 10(4) MB-49 cells and treated locally with VNR. Tumor incidence and volume analyses, as well as survival studies were carried out. RESULTS: Tumor incidence was significantly lower in VNR-treated mice (48%, n = 23) than in controls (84%, n = 19), as evaluated sixteen days after MB-49 orthotopic inoculation. Intravesical tumor volume was also significantly smaller in treated mice respect to controls (median [range]: 0.5 [0.4 to 61.8] mm.3 versus 47.7 [4.2 to 179.7] mm.3 respectively, p < 0.001 Kruskal-Wallis test). Median survival duration of the animals treated with VNR was 68 [21 to 68] days, and was significantly greater (p = 0.01, Kruskal-Wallis test) than that of untreated controls (18 [16 to 20] days). CONCLUSION: Intravesical VNR treatment demonstrated an evident antitumor effect against the TCC model assayed. The results obtained suggest a potential use of VNR as intravesical treatment for superficial TCC following transurethral bladder tumor resection to prevent recurrence or retard tumor growth.
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