Rapid dendritic cell recruitment to the bronchial mucosa of patients with atopic asthma in response to local allergen challenge

Jahnsen, F. L., Moloney, E. D., Hogan, T., Upham, J. W., Burke, C. M. and Holt, P. G. (2001) Rapid dendritic cell recruitment to the bronchial mucosa of patients with atopic asthma in response to local allergen challenge. Thorax, 56 11: 823-826. doi:10.1136/thorax.56.11.823


Author Jahnsen, F. L.
Moloney, E. D.
Hogan, T.
Upham, J. W.
Burke, C. M.
Holt, P. G.
Title Rapid dendritic cell recruitment to the bronchial mucosa of patients with atopic asthma in response to local allergen challenge
Journal name Thorax   Check publisher's open access policy
ISSN 0040-6376
Publication date 2001-11-01
Year available 2001
Sub-type Article (original research)
DOI 10.1136/thorax.56.11.823
Open Access Status DOI
Volume 56
Issue 11
Start page 823
End page 826
Total pages 4
Place of publication London, United Kingdom
Publisher BMJ
Language eng
Abstract Background-Airway dendritic cells (DQ play an important role in chronic allergic airway inflammation in experimental animals, but a similar role for DC in human allergic asthma has been difficult to define. This pilot study was undertaken to elucidate the role of DC in allergic asthma by examining their potential to migrate to the lower airways in response to bronchial challenge with specific allergen.
Formatted abstract
Background - Airway dendritic cells (DC) play an important role in chronic allergic airway inflammation in experimental animals, but a similar role for DC in human allergic asthma has been difficult to define. This pilot study was undertaken to elucidate the role of DC in allergic asthma by examining their potential to migrate to the lower airways in response to bronchial challenge with specific allergen.

Methods - Bronchial biopsy specimens were obtained from seven patients with allergic asthma before and 4-5 hours after allergen challenge. Multicolour immunofluorescence staining was performed on mucosal cryosections to identify changes in the number and phenotypes of DC.

Results - A dramatic increase in the number of CD1c+HLA-DR+ DC were observed in the lamina propria after challenge compared with baseline (22.4 υ 7.8 cells/mm 2). The rapid accumulation (within 4-5 hours) of these cells strongly suggests that they were directly recruited from peripheral blood.

Conclusion - We have shown for the first time that a specific DC subset rapidly emigrates into the human bronchial mucosa during allergic inflammation. While this study is based on relatively few patients, the consistency of the overall results strongly suggests that the rapid population dynamics of human airway DC closely parallel those in animal models of acute inflammation. These findings support suggestions that DC have an important role in human airway allergy.
Keyword Asthma
Dendritic cells
Allergen challenge
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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Created: Thu, 10 Mar 2011, 01:16:46 EST