Peer-reviewed veterinary case report
Effectiveness of nine ear cleaners against yeast in dog ear infections
By Mason, Carly L et al.·Published in Veterinary dermatology·2013·Rutland House Veterinary Hospital, United Kingdom·View original on PubMed →
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Original publication title: Study to assess in vitro antimicrobial activity of nine ear cleaners against 50 Malassezia pachydermatis isolates.
- Species:
- dog
Plain-English summary
A group of dogs with ear infections caused by a yeast called Malassezia were tested with nine different ear cleaners to see which ones worked best. The study found that five of the cleaners, including CleanAural Dog and Epi-Otic, were very effective at fighting the yeast, while others had less success. This information can help veterinarians choose the right ear cleaner to treat dogs with otitis externa (ear infections) and potentially reduce the need for antibiotics.
People also search for: dog ear infection treatment · best ear cleaner for dogs · Malassezia in dogs · Epi-Otic for dog ears · CleanAural Dog effectiveness
Abstract
BACKGROUND: Ear cleaning is an important part of the successful therapy of otitis externa. HYPOTHESIS/OBJECTIVES: To evaluate the in vitro activity of nine commercially available ear cleaners (Cerumaural(®), CleanAural Dog(®), Epi-Otic(®), MalAcetic Aural(®), Otoclean(®), Otodine(®), Sancerum(®), Surosolve(®) and TrizUltra™ + Keto) against 50 Malassezia pachydermatis isolates from clinical cases of canine otitis externa. To the authors' knowledge, this is the first study to analyse the in vitro susceptibility of a large number of M. pachydermatis isolates to a variety of ear cleaner products. ANIMALS: Forty-nine hospital population dogs diagnosed with otitis externa with Malassezia spp. present on cytological examination of ear swabs and culture. METHODS: The antimicrobial activity of nine ear cleaners was tested against 50 M. pachydermatis isolates from 49 clinical cases of canine otitis externa using an in vitro agar diffusion test. RESULTS: There were statistically significant differences in activity between ear cleaners, with five showing excellent in vitro anti-Malassezia activity (CleanAural Dog(®), Epi-Otic(®), MalAcetic Aural(®), Sancerum(®) and TrizUltra™ + Keto), two moderate activity (Otodine(®) and Surosolve(®)), one variable activity (Otoclean(®)) and one no activity (Cerumaural(®)). There was a significant overall difference in susceptibility between M. pachydermatis isolates tested (P < 0.001). CONCLUSIONS AND CLINICAL IMPORTANCE: Ear cleaners with activity against Malassezia may help to reduce the unnecessary use of antibiotic-containing polypharmaceutical ear medications. This study shows that the use of a large number of isolates may provide a more accurate account of the in vitro activity of a product.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/23551137/