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Soyka, M B; Treis, A; Eiwegger, T; Menz, G; Zhang, S; Holzmann, D; Akdis, C A; Meyer, N (2012). Regulation and expression of IL-32 in chronic rhinosinusitis. Allergy, 67(6):790-798.

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Background: Activated T lymphocytes and their interaction with resident tissue cells, particularly epithelium, play important roles in inflammatory processes in chronic rhinosinusitis (CRS). IL-32 is a recently described cytokine, which is expressed in a variety of tissue cells and involved in the pathogenesis of several chronic inflammatory diseases.

Methods: Human sinus epithelial cells were isolated from biopsies and stimulated with different cytokines, which play a role in the pathogenesis of CRS. IL-32 mRNA expression was analyzed using real-time-PCR, IL-32 protein was determined by Western blot and flow cytometry as well as immunofluorescent staining in primary sinus epithelial cells and nasal biopsies from patients with CRS and healthy controls.

Results: IL-32 mRNA was upregulated by TNF-α and IFN-γ in primary sinus epithelial cells, whereas IL-1 β, IL-4, IL-13, and IL-17 did not influence IL-32 expression. IL-32 mRNA expression was significantly higher in human primary sinonasal epithelial cells (HSECs) cocultured with Th1 cells compared with HSECs cocultured with Th0 or Th2 cells. IL-32 mRNA expression was significantly higher in biopsies from sinus epithelial tissue of CRS patients with nasal polyps compared with healthy subjects (P = 0.01). IL-32 was detected in biopsies from patients with CRS, whereas it was scarcely present in control tissues.

Conclusion: The induction of IL-32 by TNF-α, IFN-γ and Th1 cells as well as its increased expression in sinus tissues from CRS patients with nasal polyps demonstrated a potential role for IL-32 in the pathogenesis of CRS.


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Otorhinolaryngology
04 Faculty of Medicine > Swiss Institute of Allergy and Asthma Research
Dewey Decimal Classification:610 Medicine & health
Date:9 April 2012
Deposited On:24 May 2012 07:57
Last Modified:05 Apr 2016 15:49
Funders:European Allergy and Asthma Center Davos (EACD), Swiss National Science Foundation. Grant Numbers: 32-132899, 32-112306, Christine Kühne Center for Allergy Research and Education (CK-CARE), Muller-Gierok Foundation, University Hospital of Zurich
Publisher DOI:10.1111/j.1398-9995.2012.02820.x
PubMed ID:22486709

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