Malassezia pachydermatis e outros agentes infecciosos nas otites externas e dermatites em cães
Márcia de Oliveira Nobre,Mario Departamento de Veterinária Preventiva Meireles,Luiz Fernando Jantzen Gaspar,Daniela Isabel Brayer Pereira,Renata Schramm,Luiz Felipe Schuch,Luciano da Silva Souza,Lorena Leonardo de Souza +7 more
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In this article, Malassezia pachydermatis (Pityrosporum canis) is found in the whole skin microflora and it seems to occur as a consequence of changes in the local microenvironment, such as moist increase, temperature or substrate enhancement, generating a raising on cell quantity, which brings the transition from commensal form to parasitism.Abstract:
The Malassezia pachydermatis ( Pityrosporum canis) is found in the whole skin microflora. It seems to occur as a consequence of changes in the local microenvironment, such as moist increase, temperature or substrate enhancement, generating a raising on cell quantity, which brings the transition from commensal form to parasitism. The purpose of this work was to evaluate the prevalence of M. pachydermatis infection and other infectious agents in external otitis and dog dermatitis as well. We also examined 78 samples of dogs suffering from otitis, 36 samples of dogs having normal auditive tube and 24 having dermatitis. All samples were submitted to direct microscopic examination. They were cultured in blood agar, also in Sabouraud agar dextrose with cloranfenicol and cicloheximide. By direct examination showed that 50% of the samples on dogs with otitis and dermatitis 16.6% showed several cels resembling M. pachydermatis. However from healthy ear sample 83.3% did not present cells with this form. M. pachydermatis was isolated on 80.7% of otitis samples, on 25% of normal auditive tube samples and finally, 37.5% of dog dermatitis samples. It was isolated Staphylococcus intermedius, S. aureus, S. epidermidis, Pseudomonas aeruginosa, Proteus sp, Streptococcus sp and Otodectes cynotis from samples of animals with otitis. Cases of dermatites allowed also the isolation of Staphylococcus intermedius, S. aureus, S. epidermidis, Microsporum canis, M. gypseum, Trychophyton mentagophytes and Demodex canis. M. pachydermatis was the most prevalent agent in cases of external otitis and dermatitis, being an opportunistic agent, that cause otitis and dermatitis when thereis a change in the microenvironmentread more
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Evaluation of Malassezia pachydermatis antifungal susceptibility using two different methods
Patrícia da Silva Nascente,Márcia de Oliveira Nobre,Luiz Filipe Damé Schuch,Thomaz Lucia-Júnior,Laerte Ferreiro,Mário Carlos Araújo Meireles +5 more
TL;DR: There is an urgent need to standardize of the values considered as parameters for growth inhibition of this yeast so a simple and efficient method can be used routinely in the laboratory practice.
Journal ArticleDOI
Clinical and mycological analysis of dog's oral cavity
Rosema Santin,Antonella Souza Mattei,Stefanie Bressan Waller,Isabel Martins Madrid,Marlete Brum Cleff,Melissa Orzechowski Xavier,Márcia de Oliveira Nobre,Patrícia da Silva Nascente,João Roberto Braga de Mello,Mário Carlos Araújo Meireles +9 more
TL;DR: It could be concluded that the yeasts are part of the microbiota from the different sites of the oral cavity of the female canines studied without causing any significant alterations except halitosis.
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Atividade antifúngica do óleo essencial de Origanum vulgare frente a Malassezia pachydermatis
Rosema Santin,Claudia Giordani,Isabel Martins Madrid,Caroline Bohnen de Matos,Rogério Antonio Freitag,Mário Carlos Araújo Meireles,Marlete Brum Cleff,João Roberto Braga de Mello +7 more
TL;DR: The essential oil of O. vulgare is presented as bioprospecting in the promising new drugs for the treatment of otitis and dermatitis in small animal clinic and is concluded that M. pachydermatis is sensible to O. Vulgare essential oil even at low concentrations.
Journal ArticleDOI
Dermatite multifatorial em um canino
Caroline Bohnen de Matos,Isabel Martins Madrid,Rosema Santin,Rosaria Helena Machado Azambuja,Isabel Duarte Schuch,Mário Carlos Araújo Meireles,Marlete Brum Cleff +6 more
TL;DR: Antimicrobial therapy with moxidectin, itraconazol and amoxicillin was effective, with remission of clinical signs after 30 days of treatment, and the importance of an accurate diagnosis is emphasized.
Identification of fungi microflora in the ear conducts of rhesus macaques (Macaca mulatta) kept in captivity
TL;DR: Identifying the saprophytic fungi microflora in the middle ear conduct of clinically healthy rhesus monkeys used for biomedical research suggests that climatic factors could be responsibles for the great number of fungi present in the animals from group II, which were exposed to natural climatic conditions.
References
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The genus Malassezia with description of four new species.
TL;DR: The genus Malassezia has been revised using morphology, ultrastructure, physiology and molecular biology to include seven species comprising the three former taxa M. furfur, M. pachydermatis and M. sympodialis, and four new taxa.
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Factors associated with elevated cutaneous Malassezia pachydermatis populations in dogs with pruritic skin disease.
TL;DR: Results indicate that certain breeds are predisposed to the development of elevated cutaneous M pachydermatis populations and that concurrent skin diseases can frequently be identified in affected dogs.
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Comparison of two shampoos for treatment of Malassezia pachydermatis-associated seborrhoeic dermatitis in basset hounds
TL;DR: The results indicate that seborrhoeic dermatitis in basset hounds is often associated with elevated cutaneous populations of M pachydermatis and bacteria, and that the miconazole-chlorhexidine shampoo is more effective than the selenium sulphide product for the treatment for this disease.