Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/36449
Title: IL-13 expression by blood T cells and not eosinophils is increased in asthma compared to non-asthmatic eosinophilic bronchitis.
Authors: Siddiqui, S.
Cruse, G.
McKenna, S.
Monteiro, W.
Mistry, V.
Wardlaw, A.
Brightling, Christopher Edward
First Published: 14-Jul-2009
Publisher: BioMed Central
Citation: BMC Pulmonary Medicine, 2009, 9 : 34
Abstract: BACKGROUND: In asthma interleukin (IL)-13 is increased in the airway compared with non-asthmatic eosinophilic bronchitis. Whether this differential expression is specific to the airway or is more generalised is uncertain. METHODS: We sought to examine IL-13 expression in peripheral blood T-cells and eosinophils in asthma and non-asthmatic eosinophilic bronchitis. Peripheral blood CD3+ cell and eosinophil intracellular IL-13 expression from subjects with asthma, non-asthmatic eosinophilic bronchitis and healthy controls was assessed. The effect of priming by asthmatic serum on the release of IL-13 by peripheral blood mononuclear cells from healthy subjects was examined and the serum from these subjects was analysed for a range of chemokines and cytokines. RESULTS: The median (IQR)% intracellular IL-13 expression by CD3+ cells was increased in asthma [5.3 (2.7-9.8)%; n = 12] compared to non-asthmatic eosinophilic bronchitis [1.1 (0.5-3)%; n = 7] and healthy controls [1.7 (0.2-3%); n = 9] (p = 0.02), but was not significantly different in eosinophils across the groups. IL-13 released from healthy peripheral blood mononuclear cells (n = 10) was increased by asthmatic serum [117 (47.8-198)pg/ml] compared to control [78.5 (42.6-128)pg/ml; p = 0.02), but was not affected by non-asthmatic serum. CONCLUSION: Our findings support the view that IL-13 expression is increased in peripheral blood-derived T cells in asthma and that asthmatic serum up-regulates IL-13 release from healthy peripheral blood mononuclear cells.
DOI Link: 10.1186/1471-2466-9-34
eISSN: 1471-2466
Links: http://bmcpulmmed.biomedcentral.com/articles/10.1186/1471-2466-9-34
http://hdl.handle.net/2381/36449
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2009 Siddiqui et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons. org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Appears in Collections:Published Articles, Dept. of Infection, Immunity and Inflammation

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