Airway inflammation in chronic rhinosinusitis with nasal polyps and asthma : The united airways concept further supported
(2015) In PLoS ONE 10(7).- Abstract
Background: It has been established that patients with chronic rhinosinusitis with nasal polyps (CRSwNP) often have co-existing asthma. Objective: We aimed to test two hypotheses: (i) upper and lower airway inflammation in CRSwNP is uniform in agreement with the united airways concept; and (ii) bronchial inflammation exists in all CRSwNP patients irrespective of clinical asthma status. Methods: We collected biopsies from nasal polyps, inferior turbinates and bronchi of 27 CRSwNP patients and 6 controls. All participants were evaluated for lower airway disease according to international guidelines. Inflammatory cytokines were investigated using a Th1/Th2 assay including 14 chemokines and cytokines; tissue concentrations were normalized... (More)
Background: It has been established that patients with chronic rhinosinusitis with nasal polyps (CRSwNP) often have co-existing asthma. Objective: We aimed to test two hypotheses: (i) upper and lower airway inflammation in CRSwNP is uniform in agreement with the united airways concept; and (ii) bronchial inflammation exists in all CRSwNP patients irrespective of clinical asthma status. Methods: We collected biopsies from nasal polyps, inferior turbinates and bronchi of 27 CRSwNP patients and 6 controls. All participants were evaluated for lower airway disease according to international guidelines. Inflammatory cytokines were investigated using a Th1/Th2 assay including 14 chemokines and cytokines; tissue concentrations were normalized according to tissue weight and total protein concentration. Individual cytokines and multivariate inflammatory profiles were compared between biopsy sites and between patients and controls. Results: We found significantly higher concentrations of Th2 cytokines in nasal polyps compared to inferior turbinate and bronchial biopsies. In addition, we showed that the inflammatory profile of nasal polyps and bronchial biopsies correlated significantly (p<0.01). From the Th2 cytokines measured, IL-13 was significantly increased in bronchial biopsies from CRSwNP patients with, but not without asthma. Conclusion: Our findings support the united airways concept; however, we did not find evidence for subclinical bronchial inflammation in CRSwNP patients without asthma. Finally, this study indicates for the first time that nasal polyps potentially play an important role in the airway inflammation rather than being a secondary phenomenon.
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- author
- Håkansson, Kåre ; Bachert, Claus ; Konge, Lars ; Thomsen, Simon Francis ; Pedersen, Anders Elm ; Poulsen, Steen Seier ; Martin-Bertelsen, Tomas LU ; Winther, Ole ; Backer, Vibeke and Von Buchwald, Christian
- publishing date
- 2015-07-01
- type
- Contribution to journal
- publication status
- published
- in
- PLoS ONE
- volume
- 10
- issue
- 7
- article number
- e0127228
- publisher
- Public Library of Science (PLoS)
- external identifiers
-
- scopus:84940486984
- pmid:26132710
- ISSN
- 1932-6203
- DOI
- 10.1371/journal.pone.0127228
- language
- English
- LU publication?
- no
- id
- c65932d0-c277-41d1-9306-0f652052af1b
- date added to LUP
- 2019-05-31 14:09:11
- date last changed
- 2024-06-11 15:17:28
@article{c65932d0-c277-41d1-9306-0f652052af1b,
abstract = {{<p>Background: It has been established that patients with chronic rhinosinusitis with nasal polyps (CRSwNP) often have co-existing asthma. Objective: We aimed to test two hypotheses: (i) upper and lower airway inflammation in CRSwNP is uniform in agreement with the united airways concept; and (ii) bronchial inflammation exists in all CRSwNP patients irrespective of clinical asthma status. Methods: We collected biopsies from nasal polyps, inferior turbinates and bronchi of 27 CRSwNP patients and 6 controls. All participants were evaluated for lower airway disease according to international guidelines. Inflammatory cytokines were investigated using a Th1/Th2 assay including 14 chemokines and cytokines; tissue concentrations were normalized according to tissue weight and total protein concentration. Individual cytokines and multivariate inflammatory profiles were compared between biopsy sites and between patients and controls. Results: We found significantly higher concentrations of Th2 cytokines in nasal polyps compared to inferior turbinate and bronchial biopsies. In addition, we showed that the inflammatory profile of nasal polyps and bronchial biopsies correlated significantly (p<0.01). From the Th2 cytokines measured, IL-13 was significantly increased in bronchial biopsies from CRSwNP patients with, but not without asthma. Conclusion: Our findings support the united airways concept; however, we did not find evidence for subclinical bronchial inflammation in CRSwNP patients without asthma. Finally, this study indicates for the first time that nasal polyps potentially play an important role in the airway inflammation rather than being a secondary phenomenon.</p>}},
author = {{Håkansson, Kåre and Bachert, Claus and Konge, Lars and Thomsen, Simon Francis and Pedersen, Anders Elm and Poulsen, Steen Seier and Martin-Bertelsen, Tomas and Winther, Ole and Backer, Vibeke and Von Buchwald, Christian}},
issn = {{1932-6203}},
language = {{eng}},
month = {{07}},
number = {{7}},
publisher = {{Public Library of Science (PLoS)}},
series = {{PLoS ONE}},
title = {{Airway inflammation in chronic rhinosinusitis with nasal polyps and asthma : The united airways concept further supported}},
url = {{http://dx.doi.org/10.1371/journal.pone.0127228}},
doi = {{10.1371/journal.pone.0127228}},
volume = {{10}},
year = {{2015}},
}