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Perianal candidosis--a comparative study with mupirocin and nystatin.

Author(s): de Wet PM, Rode H, van Dyk A, Millar AJ

Affiliation(s): Department of Paediatric Surgery, Institute of Child Health, Red Cross War Memorial Children's Hospital, Rondebosch, South Africa.

Publication date & source: 1999-08, Int J Dermatol., 38(8):618-22.

Publication type: Clinical Trial; Randomized Controlled Trial

OBJECTIVE: To assess the efficacy and clinical outcome of 2% mupirocin in a polyethylene glycol base and nystatin cream as treatment regimens in diaper candidosis. DESIGN: A prospective randomized comparative study. METHODS: In vitro. The susceptibility of 20 clinical isolates of Candida albicans to 2% mupirocin, nystatin, and five additional antifungal agents was evaluated using the Nathan agar-well diffusion assay. The minimum inhibitory concentration (MIC) of mupirocin against the Candida species was determined using a tube dilution method. In vivo. Twenty patients (mean age, 12 months; range, 1 month to 4 years) with moderate to severe Monilia diaper dermatitis either had mupirocin ointment or nystatin cream applied to the infected area every 8 h or after every diaper change for a period of 7 days. Microscopic examination of skin scrapings and mycologic and microbiological cultures were performed before treatment and daily for 7 days, and progress was clinically assessed. RESULTS: In vitro. Topical mupirocin produced a greater zone of inhibition than nystatin cream, i.e. a mean of 27.2 mm (SD 1.55) compared with a mean of 17.3 mm (SD 1.08) for nystatin cream. MIC for mupirocin of 512 microg/mL in one case, 256 microg/mL in six cases, 200 microg/mL in 10 cases and 400 microg/mL in three cases were obtained for the 20 clinical isolates. C. albicans also displayed a universal sensitivity to mupirocin and nystatin. In vivo. Eradication of all Candida organisms was achieved within 2-6 days (mean, 2.6 days) in 10 patients receiving topical mupirocin therapy with rapid healing of the excoriated wounds (mean, 4.7 days). Both Gram-positive and Gram-negative bacteria were eradicated from the infected area within the trial period. Ten patients received topical nystatin cream and, in each case, Candida was successfully cleared within 5 days (mean, 2.8 days). Only three wounds were clinically healed within the trial period, however. The remaining seven wounds showed evidence of improved, but ongoing excoriated dermatitis and a heavy growth of polymicrobial organisms. CONCLUSIONS: Both agents eradicated Candida, the major difference being the marked response of the diaper dermatitis to mupirocin. Mupirocin should be applied topically 3-4 times daily or with each diaper change and is an excellent antifungal agent.

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