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Epidemiology and in vitro activity of antimycotics against candidal vaginal/skin/nail infections in Singapore


, : Epidemiology and in vitro activity of antimycotics against candidal vaginal/skin/nail infections in Singapore. International Journal of Dermatology 37(2): 145-149

Background: Candidal infections of the skin/nails and vagina are very common worldwide. Various in vitro test systems are available to help to determine the antifungal activity of drugs. The minimum inhibitory concentration (MIC) is a standard measure of the in vitro potency of drugs against yeasts. Methods: Vaginal smears and skin/nail scrapings of 50 consecutive patients with candidal vaginitis and 46 consecutive patients (28 women, 18 men) with cutaneous/nail candidosis were used in the study. Direct microscopy and culture from vaginal smears and skin scrapings were performed on all patients. The MICs were determined using the broth dilution method. Results: For vaginal candidosis, the mean age of the patients was 28.2 years (range, 9-49 years). Candida albicans accounted for 58% of the isolates, C. glabrata for 32%, C. tropicalis for 6%, and C. parasilosis for 4%. At the MIC of ltoreq4 mg/L, 65-95% of C. albicans, 66-94% of C. glabrata, 33-100% of C. tropicalis, and 0-50% of C. parasilosis were susceptible to the drugs tested (ketoconazole, itraconazole, nystatin, amorolfine, clotrimazole, and miconazole). For cutaneous/nail candidosis, the mean age of the patients was 45 years (range, 19-82 years). C. albicans made up 59% of the isolates, C. parasilosis 20%, C. krusei 13%, C. glabrata 4%, and C. tropicalis 4%. At the MIC of ltoreq4 mg/L, 59-960/. of C. albicans, 100% of C. glabrata, 83-100% of C. krusei, 89-100% of C. parasilosis, and 100% of C. tropicalis were susceptible to the drugs tested (ketoconazole, itraconazole, nystatin, amorolfine, clotrimazole, and miconazole). Conclusions: C. albicans is the most common Candida species causing cutaneous/nail and vaginal candidosis in Singapore. The in vitro antifungal activities of ketoconazole, itraconazole, nystatin, amorolfine, clotrimazole, and miconazole are similar against the various Candida species. C. parasilosis in vaginal candidosis appears to be less susceptible. Here, itraconazole and amorolfine may be more effective.

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Accession: 003127503

PMID: 9542677

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