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Impaired Blood Neutrophil Function in the Frequent Exacerbator of Chronic Obstructive Pulmonary Disease: A Proof-of-Concept Study

Jones, Arwel Wyn, Robinson, Richard, Mohamed, Peer, Davison, Glen, Izzat, Hassan Jaysen, Lewis, Keir Edward (2016) Impaired Blood Neutrophil Function in the Frequent Exacerbator of Chronic Obstructive Pulmonary Disease: A Proof-of-Concept Study. Lung, 194 (6). pp. 881-887. ISSN 0341-2040. E-ISSN 1432-1750. (doi:10.1007/s00408-016-9930-z) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:59957)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1007/s00408-016-9930-z

Abstract

Purpose

The underlying biological mechanisms of the frequent exacerbator phenotype of COPD remain unclear. We compared systemic neutrophil function in COPD patients with or without frequent exacerbations.

Methods

Whole blood from COPD frequent exacerbators (defined as ?2 moderate–severe exacerbations in the previous 2 years) and non-exacerbators (no exacerbations in the preceding 2 years) was assayed for neutrophil function. Neutrophil function in healthy ex-smoking volunteers was also measured as a control (reference) group.

Results

A total of 52 subjects were included in this study: 26 frequent exacerbators, 18 non-exacerbators and 8 healthy controls. COPD frequent exacerbators had blunted blood neutrophil fMLP-stimulated oxidative burst compared to both non-exacerbators (p < 0.01) and healthy controls (p < 0.001). There were no differences between COPD frequent exacerbators and non-exacerbators in blood neutrophil PMA-stimulated oxidative burst, but both COPD groups had reduced responses compared to healthy controls (p < 0.001). Bacterial-stimulated neutrophil degranulation was greater in frequent exacerbators than non-exacerbators (p < 0.05).

Conclusion

This study is the first to report aberrant receptor-mediated blood neutrophil function in the frequent exacerbator of COPD.

Item Type: Article
DOI/Identification number: 10.1007/s00408-016-9930-z
Divisions: Divisions > Division of Natural Sciences > Sport and Exercise Sciences
Depositing User: Glen Davison
Date Deposited: 20 Jan 2017 12:39 UTC
Last Modified: 17 Aug 2022 12:21 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/59957 (The current URI for this page, for reference purposes)

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