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Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.

Andrea Haydee Nuñez, Fabian Guillermo Hidalgo , Pamela Carolina Morales , Victor Eugenio Silva, Pamela Evelyn Thomson , Rodrigo Andres Castro.


Cited By:5

Abstract
Background: External otitis is common in dogs and one of the main agents involved is Malassezia pachydermatis, a yeast belonging to the otic micobiota. Empirical treatment can fail, therefore it is essential to know the antifungal susceptibility profile to prescribe appropriate treatment, a fact scarcely reported in Chile.
Aim: This study aimed to determine the antifungal sensitivity of M. pachydermatis isolated from the external auditory canal of dogs in central Chile.
Methods: Ear swabs from 30 dogs (15 healthy and 15 with external otitis) were used. Samples were subjected to cytology and fungal culture. The antifungal susceptibility was determined according to CLSI document M44A-2 using the disk diffusion test, from amphotericin B, caspofungin, fluconazole, nystatin, clotrimazole and voriconazole were used.
Results: The prevalence of M. pachydermatis was 66.7%, from 8 healthy dogs and 12 with otitis. While fungal culture was not associated with the clinical condition of the patient (P=0.24), the yeast count by cytology was significantly higher in dogs with otitis (P=0.003). The strains were sensitive to all antifungals except for caspofungin; with resistance in the 55% of the isolated.
Conclusion: M. pachydermatis is isolated more frequently in dogs with otitis and the ear cytological examination is useful to differentiate colonized dogs versus dogs with otitis. In addition, most antifungals in vitro are active against this yeast, except caspofungin, an antifungal used in human medicine. This situation should be further monitored in epidemiological programs to evaluate the possible impact on Chilean public health.

Key words: Dogs, Malassezia pachydermatis, Antifungal susceptibility.


 
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How to Cite this Article
Pubmed Style

Nuñez AH, FGH, PCM, Silva VE, PET, Castro RA, . Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Vet J. 2022; 12(1): 99-104. doi:10.5455/OVJ.2022.v12.i1.12

Web Style

Nuñez AH, FGH, PCM, Silva VE, PET, Castro RA, . Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. https://www.openveterinaryjournal.com/?mno=46722 [Access: December 07, 2024]. doi:10.5455/OVJ.2022.v12.i1.12

AMA (American Medical Association) Style

Nuñez AH, FGH, PCM, Silva VE, PET, Castro RA, . Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Vet J. 2022; 12(1): 99-104. doi:10.5455/OVJ.2022.v12.i1.12


Vancouver/ICMJE Style

Nuñez AH, FGH, PCM, Silva VE, PET, Castro RA, . Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Vet J. (2022), [cited December 07, 2024]; 12(1): 99-104. doi:10.5455/OVJ.2022.v12.i1.12


Harvard Style

Nuñez, A. H., , F. G. H., , P. C. M., Silva, V. E., , P. E. T., Castro, R. A. & (2022) Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Vet J, 12 (1), 99-104. doi:10.5455/OVJ.2022.v12.i1.12


Turabian Style

Nuñez, Andrea Haydee, Fabian Guillermo Hidalgo, Pamela Carolina Morales, Victor Eugenio Silva, Pamela Evelyn Thomson, Rodrigo Andres Castro, and . 2022. Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Veterinary Journal, 12 (1), 99-104. doi:10.5455/OVJ.2022.v12.i1.12


Chicago Style

Nuñez, Andrea Haydee, Fabian Guillermo Hidalgo, Pamela Carolina Morales, Victor Eugenio Silva, Pamela Evelyn Thomson, Rodrigo Andres Castro, and . "Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.." Open Veterinary Journal 12 (2022), 99-104. doi:10.5455/OVJ.2022.v12.i1.12


MLA (The Modern Language Association) Style

Nuñez, Andrea Haydee, Fabian Guillermo Hidalgo, Pamela Carolina Morales, Victor Eugenio Silva, Pamela Evelyn Thomson, Rodrigo Andres Castro, and . "Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.." Open Veterinary Journal 12.1 (2022), 99-104. Print. doi:10.5455/OVJ.2022.v12.i1.12


APA (American Psychological Association) Style

Nuñez, A. H., , F. G. H., , P. C. M., Silva, V. E., , P. E. T., Castro, R. A. & (2022) Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile.. Open Veterinary Journal, 12 (1), 99-104. doi:10.5455/OVJ.2022.v12.i1.12


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