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Bol. micol ; 22: 31-35, dic. 2007. ilus
Article in Spanish | LILACS | ID: lil-598285

ABSTRACT

Con el objeto de contribuir al conocimiento de la micobiota en áreas públicas, en especial en la búsqueda de propágulos infectivos para el hombre y los animales de dermatofitos geofílicos desde sus fuentes saprofíticas, se estudiaron en el lapso de 2 años, 8 muestras superficiales de suelo (una cada 3 meses) desde los jardines centrales de la Universidad Nacional de Tucumán mediante la Técnica de Vanbreuseghem, usando pelos de niños como anzuelo queratínico. Las 8 muestras sembradas en 24 placas de Petri, presentaron todas al cabo de 25-30 días la presencia de Arthroderma gypseum y su anamorfo Microsporum gypseum como único dermatofito presente. Los cultivos en Sabouraud glucosado y en Sabouraud al 10 por ciento (medio deTakashio), permitieron identificar las cepas típicas del anamorfo. La presencia y prevalencia en el tiempo de este agente en las muestras colectadas en dependencias universitarias rodeadas de aulas, laboratorios y oficinas, posee un impacto en salud pública y ambiental por su conocido oportunismo en pacientes inmunocompetentes e inmunocomprometidos.


With the purpose of knowing the presence of mycobiota in public areas, mainly in the search of propagules of geophilic dermatophytes which are infective for man and animals from their saprophytic sources, 8 superficial samples of soil (every 3 month), collected from the central gardens of the Universidad Nacional de Tucumán were studied during a 2-year period, by using the Vanbreuseghem Technique which employs children hair as a keratinic bait. The overall 8 samples sowed on 24 Petri plates revealed after 25-30 days the presence of Arthroderma gypseum and its anamorph Microsporum gypseum as the only dermatophyte present. Cultures in glucose Sabouraud and in 10 percent Sabouraud (Takashio medium), allowed the identification of the typical strains of the anamorph. Presence and prevalence in time of this agent in samples collected from university buildings surrounded by classrooms, laboratories and offices means an impact on public and environmental health due to its well known opportunism in immunocompetent and immunocompromised patients.


Subject(s)
Humans , Animals , Arthrodermataceae/isolation & purification , Arthrodermataceae/classification , Arthrodermataceae/pathogenicity , Culture Techniques , Soil Microbiology , Argentina , Fungi
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