In:
Otolaryngology–Head and Neck Surgery, Wiley, Vol. 137, No. 2 ( 2007-08), p. 250-255
Abstract:
Develop a model of nasal allergen‐induced Eustachian tube dysfunction (ETD) in a rat and investigate the role of immune modulatory oligonucleotides (IMOs) in the prevention of nasal allergen‐induced ETD. STUDY DESIGN AND SETTING Prospective, randomized study. Brown Norway rats were sensitized to ova albumin (OVA) and randomized to receive pretreatment with IMOs or phosphate‐buffered saline. All animals were challenged intranasally with aerosolized OVA. Dynamic measures of Eustachian tube (ET) function were analyzed. RESULTS Animals that were OVA‐sensitized and IMO‐pre‐treated had significantly lower mean passive opening (95% confidence interval [95% CI] 15.0,19.4) and closing (95% CI 4.8,7.8) ET pressures compared with those of (95% CI 24.1,32.7) and (95% CI 12.1,18,8) OVA‐sensitized untreated rats, respectively. In addition, the IMO‐pretreated animals demonstrated the ability to actively clear a significantly higher proportion of negative pressure (95% CI 0.64,0.96) compared with the untreated animals (95% CI 0.09,0.39). IMO‐pretreated animals also demonstrated significantly improved mean mucociliary clearance times in seconds (95% CI 115,195) than those in untreated animals (95% CI 308,668). CONCLUSIONS Pretreatment with IMOs prevented allergen‐induced allergic inflammation around the Eustachian tube (ET) and resulted in improved ventilatory function of the ET compared with sensitized untreated animals. IMOs offer considerable promise in the management of nasal allergic disease as well as otitis media with effusion.
Type of Medium:
Online Resource
ISSN:
0194-5998
,
1097-6817
DOI:
10.1016/j.otohns.2007.03.004
Language:
English
Publisher:
Wiley
Publication Date:
2007
detail.hit.zdb_id:
2008453-5
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