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Nasal eosinophilia and IL-5 mRNA expression in seasonal allergic rhinitis induced by natural allergen exposure: Effect of topical corticosteroids  Keisuke.

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Presentation on theme: "Nasal eosinophilia and IL-5 mRNA expression in seasonal allergic rhinitis induced by natural allergen exposure: Effect of topical corticosteroids  Keisuke."— Presentation transcript:

1 Nasal eosinophilia and IL-5 mRNA expression in seasonal allergic rhinitis induced by natural allergen exposure: Effect of topical corticosteroids  Keisuke Masuyama, MDa, Stephen J. Till, PhDa, Mikila R. Jacobson, PhDa, Asma Kamil, MScb, Lisa Cameron, BScb, Sigurdur Juliusson, MDc, Olle Lowhagen, MDd, A.Barry Kay, PhDe, Qutayba A. Hamid, PhDb, Stephen R. Durham, MDa  Journal of Allergy and Clinical Immunology  Volume 102, Issue 4, Pages (October 1998) DOI: /S (98) Copyright © 1998 Mosby, Inc. Terms and Conditions

2 Fig. 1 A, Timothy grass pollen (Phleum pratense) counts in Gotenburg during the summer when this study was conducted. B, Median visual analogue symptoms scores over the same period in placebo- (open triangles) and fluticasone-treated (closed triangles) patients with allergic rhinitis. Peak season nasal biopsy specimens were collected at time point indicated. Journal of Allergy and Clinical Immunology  , DOI: ( /S (98) ) Copyright © 1998 Mosby, Inc. Terms and Conditions

3 Fig. 2 Effect of fluticasone on numbers of EG2+ eosinophils and CD3+ T cells in nasal epithelium and submucosa. Data shown are for baseline (preseason) and during natural grass pollen allergen exposure (peak season), in placebo- (open circles) and fluticasone-treated (closed circles) patients with allergic rhinitis. Lines represent median values. Within group preseason and peak-season counts were compared by the Wilcoxon test, and differences (peak season minus preseason) between fluticasone- and placebo-treated patients were compared by using the Mann-Whitney U test. Journal of Allergy and Clinical Immunology  , DOI: ( /S (98) ) Copyright © 1998 Mosby, Inc. Terms and Conditions

4 Fig. 3 Autoradiographs of cryostat sections of nasal biopsy specimens collected from a patient receiving placebo during the pollen season. Sections were hybridized with a 35 S-labeled antisense IL-5 riboprobe (A) and a 35 S-labeled sense IL-5 riboprobe (negative control) (B). Journal of Allergy and Clinical Immunology  , DOI: ( /S (98) ) Copyright © 1998 Mosby, Inc. Terms and Conditions

5 Fig. 4 Effect of fluticasone on numbers of IL-5 and GM-CSF mRNA–expressing cells in nasal submucosa. Data shown are for baseline (preseason) and during natural grass pollen allergen exposure (peak season), in fluticasone- (open circles) and placebo-treated (closed circles) patients with allergic rhinitis. Lines represent median values. Differences (peak-season minus preseason) between fluticasone- and placebo-treated patients were compared by using the Mann-Whitney U test. Journal of Allergy and Clinical Immunology  , DOI: ( /S (98) ) Copyright © 1998 Mosby, Inc. Terms and Conditions

6 Fig. 5 effects of fluticasone on in vitro secretion of il-5 protein by allergen-stimulated peripheral blood t cells. PBMCs were stimulated with Phleum pratense at 5 × 106 cells/ml, and supernatants were collected after 6 days for measurement of il-5 by ELISA. data points represent mean values (+ SE) of 5 atopic subjects (closed circles). Open circles represent il-5 production in presence of drug vehicle controls. *P < .05 versus control culture (no fluticasone). Journal of Allergy and Clinical Immunology  , DOI: ( /S (98) ) Copyright © 1998 Mosby, Inc. Terms and Conditions

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