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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

In vitro susceptibility of the opportunistic fungus Cryptococcus neoformans to anthelmintic benzimidazoles.

Ten benzimidazole derivatives and amphotericin B were tested in vitro against three isolates of Cryptococcus neoformans. Drug concentrations inhibiting 50% of growth (IC50s) were determined. Four derivatives, including mebendazole and albendazole, had moderately high activities (IC50 = 0.1 to 0.3 microgram/ml). Fenbendazole, however, was 10-fold more active (IC50 = 0.01 to 0.02 microgram/ml) and also 2-fold more active than amphotericin B. Ten additional clinical isolates of C. neoformans were tested against fenbendazole, mebendazole, and albendazole; similar susceptibilities were observed. Drug concentrations lethal to 90% of the cells (LC90s) were determined for two isolates. The LC90s of albendazole and mebendazole were 0.92 to 2.1 micrograms/ml, and those of fenbendazole were 0.06 to 0.07 microgram/ml; the latter are eight to ninefold lower than the LC90s of amphotericin B that were obtained. Spontaneously arising mutants displaying partial resistance to fenbendazole arose at a low frequency (5 x 10(-9).[1]

References

  1. In vitro susceptibility of the opportunistic fungus Cryptococcus neoformans to anthelmintic benzimidazoles. Cruz, M.C., Bartlett, M.S., Edlind, T.D. Antimicrob. Agents Chemother. (1994) [Pubmed]
 
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