A rabbit model of ear otitis established using the Malassezia pachydermatis strain C23 from dogs

Autor: Nadezhda Sachivkina, Arfenya Karamyan, Olesya Petrukhina, Olga Kuznetsova, Ekaterina Neborak, Alfia Ibragimova
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Veterinary World, Vol 16, Iss 11, Pp 2192-2199 (2023)
Druh dokumentu: article
ISSN: 0972-8988
2231-0916
DOI: 10.14202/vetworld.2023.2192-2199
Popis: Background and Aim: Fungal infections are a growing problem for both humans and animals due to the emergence of pathogenic strains resistant to modern antifungal treatments. To evaluate the efficacy of new antifungal drugs, it is essential to develop animal models that demonstrate typical responses to both the infection (pathogenesis and clinical course) and to the treatment, including adverse effects. In this study, we established a rabbit otitis model by infection of an aggressive multidrug-resistant strain from dogs, Malassezia pachydermatis C23, with no need for concomitant immunosuppression. Materials and Methods: Twenty healthy adult male gray giant rabbits (1 year old, 5.5 kg) were inoculated once with M. pachydermatis C23 at 108 colony-forming units/mL. We observed the clinical signs of the disease and collected ear smears and blood samples every 5 days. Results: The infection progressed rapidly and exhibited characteristic clinical signs without spontaneous recovery for at least 1 month. In fact, substantial deterioration was observed as evidenced by blood parameters. Conclusion: This rabbit otitis model established using an aggressive drug-resistant fungus strain without immunosuppression could prove valuable for testing novel antifungal agents.
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