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  • Title: Fluticasone furoate nasal spray reduces the nasal-ocular reflex: a mechanism for the efficacy of topical steroids in controlling allergic eye symptoms.
    Author: Baroody FM, Shenaq D, DeTineo M, Wang J, Naclerio RM.
    Journal: J Allergy Clin Immunol; 2009 Jun; 123(6):1342-8. PubMed ID: 19428097.
    Abstract:
    BACKGROUND: Eye symptoms frequently occur in patients with allergic rhinitis and are among the most bothersome symptoms. Intranasal steroids have been shown to reduce ocular symptoms associated with allergic nasal symptoms, even though they do not reach the eye. OBJECTIVE: To elucidate a mechanism to explain these observations. METHODS: We performed a double-blind, placebo-controlled, crossover experiment in 20 subjects with seasonal allergic rhinitis. Nasal antigen challenge was performed consecutively for 3 days after 1 week of treatment with either placebo or fluticasone furoate nasal spray (FFNS). Subjects recorded their nasal and ocular symptoms, and nasal secretions were quantified. Nasal scrapings to quantify eosinophils were obtained before each antigen challenge. RESULTS: Nasal challenge with antigen led to sneezing, a nasonasal, and a nasal-ocular reflex. Priming in the number of sneezes, contralateral nasal secretion weights, and total eye symptoms were observed. Treatment with FFNS reduced sneezing, the nasonasal and nasal-ocular reflexes, and the amount of eosinophils in nasal secretions. CONCLUSIONS: We confirmed that a nasal-ocular reflex follows nasal challenge with allergen and that it can contribute to the ocular symptoms associated with allergic rhinitis. FFNS reduced eosinophil infiltration, priming, and ocular symptoms. Furthermore, our results support a mechanism by which control of eye symptoms can be achieved during nasal administration of an intranasal steroid in patients with seasonal allergic rhinitis.
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