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Multiple airborne allergen-induced eosinophilic chronic rhinosinusitis murine model

 Sang Chul Park  ;  Soo In Kim  ;  Chi Sang Hwang  ;  Hyung-Ju Cho  ;  Joo-Heon Yoon  ;  Chang-Hoon Kim 
 European Archives of Oto-Rhino-Laryngology, Vol.276(8) : 2273-2282, 2019 
Journal Title
 European Archives of Oto-Rhino-Laryngology 
Issue Date
Airborne allergen ; Eosinophil ; Epithelial remodeling ; Murine model ; Rhinosinusitis
PURPOSE: Several murine models have been established to mimic human eosinophilic chronic rhinosinusitis (ECRS). However, in most of these models, ECRS was induced using ovalbumin, which does not cause sinusitis in humans. Thus, we aimed to develop a more clinically relevant murine model of ECRS using multiple airborne allergens. We also investigated the effects of exposure duration of the allergens on ECRS development. METHODS: C57BL/6 mice were intranasally administered multiple airborne allergens (house dust mite, Aspergillus fumigatus, Alternaria alternata, and protease from Staphylococcus aureus) three times weekly for 4, 8, 12, and 16 consecutive weeks. Histopathological changes, the levels of cytokines and chemokines in the nasal lavage fluid, and immune cells of the blood and spleen were analyzed. RESULTS: The mice administered multiple allergens showed significantly increased eosinophil infiltration, epithelial thickening and disruption, and subepithelial collagen deposition from 8 weeks compared to the control group. Goblet cell hyperplasia, polyp-like lesions, and blood eosinophils, as well as the levels of interleukin-5 and eotaxin in the nasal lavage fluid were considerably increased in the ECRS group from 12 weeks compared to those of controls. Instillation of allergens for 16 weeks exacerbated the eosinophil infiltration and eotaxin increase in the nasal lavage fluid. CONCLUSIONS: We successfully established a new murine model of ECRS using more clinically relevant multiple airborne allergens. Prolonged exposure to airborne allergens for 12 weeks or more, corresponding to the definition of human ECRS, strongly induced eosinophil infiltration as well as epithelial remodeling.
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1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Hoon(김창훈) ORCID logo https://orcid.org/0000-0003-1238-6396
Park, Sang Chul(박상철)
Yoon, Joo Heon(윤주헌)
Cho, Hyung Ju(조형주) ORCID logo https://orcid.org/0000-0002-2851-3225
Hwang, Chi Sang(황치상)
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