In vitro sensitivity of Candida (Torulopsis) glabrata to clotrimazole.
Vulvovaginitis caused by Candida (Torulopsis) glabrata is often refractory to intravaginal imidazole therapy. Clotrimazole achieves its fungistatic activity for Candida albicans and C. glabrata by inhibiting different steps in intermediary cell metabolism. For C. glabrata, alkylation precedes dimethylation. The possibility that this altered sequence might account for the relative therapeutic nonresponsiveness was studied by determining comparative minimal inhibitory concentrations (MICs) of clotrimazole. In vitro analyses of ten strains of C. glabrata and 30 control strains of C. albicans performed using both agar and broth dilution tests revealed that four-fold lower MICs were consistently demonstrable with C. glabrata, irrespective of inoculum size. The data suggest that clinical difficulties encountered in the therapy of torulopsis vulvovaginitis probably represent the inability of intravaginal medication to eradicate urethral/urinary bladder colonization and subsequent reinfection rather than true therapeutic failures.[1]References
- In vitro sensitivity of Candida (Torulopsis) glabrata to clotrimazole. Fagnant, J.E., Clark, R.B., Monif, G.R. Am. J. Reprod. Immunol. (1989) [Pubmed]
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