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- Title
Inhibition of the growth in vitro of Trichophyton mentagrophytes, Trichophyton erinacei and Microsporum persicolor by miconazole and chlorhexidine.
- Authors
PERRINS, NATALIE; HOWELL, SUSAN A.; MOORE, MARY; BOND, ROSS
- Abstract
An agar dilution technique was used to assess the minimum inhibitory concentrations (MICs) of miconazole, chlorhexidine and a 1:1 combination of both agents for 9 isolates of Trichophyton mentagrophytes, 9 isolates of Trichophyton erinacei and 5 isolates of Microsporum persicolor. MICs of chlorhexidine did not vary significantly between the three dermatophyte species tested, but the MICs of miconazole alone and in combination with chlorhexidine for T. erinacei were significantly greater that those for T. mentagrophytes and M. persicolor. A synergistic drug interaction was noted with one isolate of T. erinacei and one isolate of M. persicolor. An additive effect was demonstrated for 13 isolates (5 T. mentagrophytes, 6 T. erinacei, 2 M. persicolor), and indifference was noted in 8 isolates (4 T. mentagrophytes, 2 T. erinacei, 2 M. persicolor). Although synergy was less often seen when compared with a previous study of Microsporum canis, the synergistic or additive effects seen with the majority (15 out of 23) of isolates studied in vitro provides a rationale for the combined use of miconazole and chlorhexidine in the adjunctive topical therapy of dermatophytosis caused by T. mentagrophytes, T. erinacei and M. persicolor.
- Subjects
AGAR; MICONAZOLE; ANTIFUNGAL agents; CHLORHEXIDINE; TRICHOPHYTON; MICROSPORUM; VETERINARY dermatology
- Publication
Veterinary Dermatology, 2005, Vol 16, Issue 5, p330
- ISSN
0959-4493
- Publication type
Article
- DOI
10.1111/j.1365-3164.2005.00473.x