Evidence Of Trichophyton Tonsurans-Like Dermatophyte Isolated From Skin Lesions In A 2½-Year-Old Nigerian Indigenous Male Dog: A Case Report

Abstract

This paper reports indications pointing to a rare case of the isolation of Trichophyton tonsuranslike Dermatophyte, which is  anthropophilic, from skin lesions in a dog. Trichophyton tonsurans. Skin scrapings and hair pullouts were collected and processed for  mycology. The susceptibility of the isolates to commonly used antifungal agents was tested. Direct microscopic examination of samples  digested in 20 % KOH revealed hyaline septate filaments in skin scales and chains of endothrix spores in hair. Colonies on sabourauds  dextrose agar were white, flat and velvety with a reddish-yellow pigmentation on the reverse side. Microscopic examination of the  isolates stained with lactophenol cotton blue showed numerous inflated microconidia with abundant chlamydoconidia, typical of T.  tonsurans. The isolate was sensitive to caspofungin and posaconazole but resistant to fluconazole, nystatin, amphotericin B and  griseofulvin. Trichophyton tonsurans is not a common pathogen of animals. This report provides evidence of the isolation of T.  tonsurans-like Dermatophyte from skin lesions of a dogs in Nigeria.