Journal of Antimicrobial Chemotherapy, Vol 42, 817-820, Copyright © 1998 by The British Society for Antimicrobial Chemotherapy
MJ Bouma, D Snowdon, AH Fairlamb and JP Ackers
Clinical resistance of Trichomonas vaginalis to metronidazole is best
correlated with MIC values measured under aerobic conditions. Under these
conditions both disulfiram (bis(diethylthiocarbamoyl)disulphide), and its
first mammalian metabolite, ditiocarb (diethyldithiocarbamate), showed high
levels of activity against metronidazole-sensitive (disulfiram MIC, 0.1-0.7
microM; ditiocarb MIC, 0.3-9 microM) and - resistant (MICs 0.2-1.3 microM
and 1.2-9 microM respectively) isolates. Tritrichomonas foetus was also
sensitive-the MICs for seven metronidazole-sensitive isolates were 0.1-1.0
microM for disulfiram and 1.0-6.9 microM for ditiocarb; those for two
highly metronidazole- resistant strains were 0.3-1.3 microM and 0.6-6
microM respectively. Under anerobic conditions most strains became highly
resistant to both compounds. Surprisingly, disulfiram was consistently more
active than ditiocarb.
Activity of disulfiram (bis(diethylthiocarbamoyl)disulphide) and ditiocarb (diethyldithiocarbamate) against metronidazole-sensitive and - resistant Trichomonas vaginalis and Tritrichomonas foetus [In Process Citation]
Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, UK.
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