Dermatophytosis diagnosed at the Evandro Chagas Institute, Pará, Brazil

Abstract

Dermatophytosis is caused by a dermatophyte fungus that affects the stratum corneum and keratinized tissue. Dermatophyte fungus has been reported worldwide as the causative agent of dermatophytosis, but the etio-epidemiological aspects of these mycoses in the state of Pará remain unknown. The purpose of this study was to describe the etio-epidemiological profile of dermatophytosis diagnosed in patients at the Evandro Chagas Institute from May 2005 to June 2006. A total of 494 patients were admitted, and their samples were collected, submitted for direct microscopic examination using 20% KOH and cultured in Sabouraud and Mycosel medium. The identification was based in macro and microscopic characteristics. Direct examinations were positive in 13% (66/494) of the patients, and agent isolation by cultivation of the biological sample was successful in 4% (20/494), with a high prevalence of T. mentagrophytes (40%; 8/20). Dermatophytosis was more frequent in women (58%; 38/66). Fifty-two percent (21/38) of the cases were children with an average age of 8 years. The most frequent clinical presentation was Tinea corporis (55%, 36/66). For the cases in which the dermatophyte agent was not isolated, we discuss the factors that may be interfering with isolation. Tinea corporis occurred more frequently observed when T. mentagrophytes and T. rubrum were the major etiologic agents.

Epidemiologia de micoses, pitiose e micotoxicoses em equinos no sudeste do Rio Grande do Sul

“…Situação diversa da relatada na literatura, que cita Trichophyton equinum e Microsporum canis como os fungos que mais causam dermatofitose em equinos (Pereira et al 2006, Chermette et al 2008, Lyskova et al 2015. Uma importante implicação desse fato está na saúde pública, uma vez que o complexo T. mentagrophytes é uma espécie antropofílica muito mais comum e implicada em infecções humanas (Cafarchia et al 2013, Costa et al 1999, Silveira-Gomes et al 2013), enquanto T. equinum é zoofílico e raramente ocorre em humanos (Chabasse & Pihet 2008).…”

Antifungal activity of geraniol and citronellol, two monoterpenes alcohols, againstTrichophyton rubruminvolves inhibition of ergosterol biosynthesis

“…Dermatophytosis is a fungal infection in keratinized tissues caused by dermatophytes. This mycosis exhibits a cosmopolitan profile and ranks among the most common infectious diseases that affect humans (Seebacher et al, 2008;Silveira-Gomes et al, 2013). Dermatophytes are specialized fungi in keratin degradation of infecting the stratum corneum, hair, claws, or nails.…”

Prevalence and distribution of dermatophytosis lesions on cattle in Plateau State, Nigeria

“…The presence of non-pigmented, septate hyphae in skin scales and ectothrix spores on hair surfaces observed by direct examination in this study agrees with the report of Silveira-Gomes et al . [25] who studied 494 human skin scrapings by direct examination and concluded that the presence of arthroconidia in skin scales is diagnostic of dermatophyte involvement.…”