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  • Title: Comparison of the efficacy of intravesical Bacillus Calmette-Guérin with thiotepa, mitomycin C, poly I:C/poly-L-lysine and cis platinum in murine bladder cancer.
    Author: Shapiro A, Ratliff TL, Oakley DM, Catalona WJ.
    Journal: J Urol; 1984 Jan; 131(1):139-42. PubMed ID: 6418894.
    Abstract:
    The efficacy of intravesical Bacillus Calmette-Guérin for the treatment of the mouse bladder tumor MBT-2 was compared with that of thiotepa, mitomycin C, cis-diamminedichloroplatinum II and poly I:C/poly-L-lysine. MBT-2 cells were instilled into the bladder immediately after electrocauterization. Drug instillations were initiated 24 hours later and continued on a weekly basis for 4 weeks. Both Bacillus Calmette-Guérin and cis-diamminedichloroplatinum II significantly (p less than .0004) inhibited MBT-2 tumor implantation when compared to diluent-treated controls. Neither mitomycin C, thiotepa nor poly I:C/poly-L-lysine significantly inhibited tumor implantation. Mean tumor weights also were significantly (p less than .05) reduced in Bacillus Calmette-Guérin and cis-diamminedichloroplatinum II-treated mice, while tumor mean weights in mice treated with thiotepa, mitomycin C or poly I:C/poly-L-lysine were not significantly different than controls. These results suggest that the efficacy of intravesical Bacillus Calmette-Guérin in comparison with other drugs in the MBT-2 mouse bladder tumor model is similar to observations reported in human clinical trials in which intravesical Bacillus Calmette-Guérin was shown to be more effective than other cytotoxic drugs. These data further support the utility of the MBT-2 model for the study of the mechanisms by which Bacillus Calmette-Guérin inhibits bladder tumor growth.
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