Effect of topical corticosteroids on seasonal increases in epithelial eosinophils and mast cells in allergic rhinitis: a comparison of nasal brush and biopsy methods

Autor: Sigurdur Juliusson, B Balder, Stephen R. Durham, Mikila R. Jacobson, A. B. Kay, Olle Löwhagen
Rok vydání: 1999
Předmět:
Zdroj: Clinical & Experimental Allergy. 29:1347-1355
ISSN: 0954-7894
DOI: 10.1046/j.1365-2222.1999.00608.x
Popis: Background Nasal brushing and nasal biopsy are well-tolerated sampling techniques. Seasonal grass pollen-induced rhinitis is characterized by epithelial mast cell infiltration and seasonal increases in both epithelial and sub-mucosal eosinophils. Objective To compare the ability of the nasal brush and nasal biopsy techniques to detect natural seasonal increases in eosinophils and mast cells, and to assess the influence of topical corticosteroid. Methods Nasal brush samples and nasal biopsies were collected from 46 grass pollen-sensitive seasonal rhinitis patients before the grass pollen season and at the peak of the pollen season following 6 weeks' treatment with either fluticasone propionate aqueous nasal spray (200 μg, twice daily) or placebo nasal spray. Results Placebo patients showed seasonal increases in epithelial eosinophils both with nasal brushing (P
Databáze: OpenAIRE