IL-13 expression by blood T cells and not eosinophils is increased in asthma compared to non-asthmatic eosinophilic bronchitis..pdf (514.62 kB)
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IL-13 expression by blood T cells and not eosinophils is increased in asthma compared to non-asthmatic eosinophilic bronchitis.

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journal contribution
posted on 28.01.2016, 12:04 by S. Siddiqui, G. Cruse, S. McKenna, W. Monteiro, V. Mistry, A. Wardlaw, Christopher Edward Brightling
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.

History

Citation

BMC Pulmonary Medicine, 2009, 9 : 34

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/School of Medicine/Department of Infection, Immunity and Inflammation

Version

VoR (Version of Record)

Published in

BMC Pulmonary Medicine

Publisher

BioMed Central

eissn

1471-2466

Acceptance date

14/07/2009

Copyright date

2009

Available date

28/01/2016

Publisher version

http://bmcpulmmed.biomedcentral.com/articles/10.1186/1471-2466-9-34

Language

en