%0 Journal Article
%T Occurrence and identification of yeasts in dogs external ear canal with and without otitis
%A Elidiana de Bona
%A Sergio Ubiratan Paz Telesca
%A Alexandre Meneghello Fuentefria
%J Revista MVZ C¨®rdoba
%D 2012
%I Universidad de Cordoba
%X Objective. To analyze the presence of yeast in the external ear canal of 116 dogs with and without a diagnosis of otitis from veterinary clinic in the Chapec¨® city, Santa Catarina, Brazil, and to examine the secretion of the proteinase in isolates. Materials and methods. Were collected cerumen of conduct hearing of dogs of 16 different races 71% with pendular ear type, 5% of semi-pendular and 24% of the erect type. All dogs were previously evaluated by otoscopy and grouped in dogs with and without otitis. Results. Yeasts were isolated in 44 samples (approximately 36%), where Malassezia pachydermatis was identified in 95% of samples where were observed growth of yeasts. On 20 samples the proteinase enzyme showed strong activity in 31% isolates, were 21% of the dogs with otitis tested showed high proteolytic activity. Conclusions. We observed a variation of strains of M. pachydermatis-producing enzymes. The variation in production of these enzymes is probably more associated with different response to the action of the immune system of the animal in the tissue injury.
%K Dog
%K Malassezia pachydermatis
%K otitis
%K proteinases
%U http://revistas.unicordoba.edu.co/revistamvz/mvz-172/V17N2A15.pdf