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Neutrophil extracellular traps are associated with disease severity and microbiota diversity in patients with chronic obstructive pulmonary disease

Open access
Dicker, Alison J., Crichton, Megan L., Pumphrey, Eleanor G., Cassidy, Andrew J., Suarez-Cuartin, Guillermo, Sibila, Oriol, Furrie, Elizabeth, Fong, Christopher J., Ibrahim, Wasyla, Brady, Gill, Einarsson, Gisli G., Elborn, J. Stuart, Schembri, Stuart, Marshall, Sara E., Palmer, Colin N.A., Chalmers, James D.·2018·Journal of Allergy and Clinical Immunology

Abstract

BACKGROUND: Neutrophil extracellular traps (NETs) have been observed in the airway in patients with chronic obstructive pulmonary disease (COPD), but their clinical and pathophysiologic implications have not been defined. OBJECTIVE: We sought to determine whether NETs are associated with disease severity in patients with COPD and how they are associated with microbiota composition and airway neutrophil function. METHODS: NET protein complexes (DNA-elastase and histone-elastase complexes), cell-free DNA, and neutrophil biomarkers were quantified in soluble sputum and serum from patients with COPD during periods of disease stability and during exacerbations and compared with clinical measures of disease severity and the sputum microbiome. Peripheral blood and airway neutrophil function were evaluated by means of flow cytometry ex vivo and experimentally after stimulation of NET formation. RESULTS: , symptoms evaluated by using the COPD assessment test, and higher levels of NET complexes in patients with frequent exacerbations (P = .002). Microbiota composition was heterogeneous, but there was a correlation between NET complexes and both microbiota diversity (P = .009) and dominance of Haemophilus species operational taxonomic units (P = .01). Ex vivo airway neutrophil phagocytosis of bacteria was reduced in patients with increased sputum NET complexes. Consistent results were observed regardless of the method of quantifying sputum NETs. Failure of phagocytosis could be induced experimentally by incubating healthy control neutrophils with soluble sputum from patients with COPD. CONCLUSION: NET formation is increased in patients with severe COPD and associated with more frequent exacerbations and a loss of microbiota diversity.

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Metadata

Authors
Dicker, A. J., Crichton, M. L., Pumphrey, E. G., Cassidy, A. J., Suarez-Cuartin, G., Sibila, O., Furrie, E., Fong, C. J., Ibrahim, W., Brady, G., Einarsson, G. G., Elborn, J. S., Schembri, S., Marshall, S. E., Palmer, C. N. A., & Chalmers, J. D.
Venue
Journal of Allergy and Clinical Immunology
Publisher
Elsevier BV
Published
2018-01
Volume
141
Issue
1
Pages
117-127
ISSN
0091-6749 (ISSN-L)
OpenAlex
W2612126073
Cited by
295
References
9
FWCI
19.64
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Neutrophil extracellular traps are associated with disease severity and microbiota diversity in patients with chronic obstructive pulmonary disease. https://app.cochat.ai/papers/10.1016/j.jaci.2017.04.022
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Dicker, A. J., Crichton, M. L., Pumphrey, E. G., Cassidy, A. J., Suarez-Cuartin, G., Sibila, O., Furrie, E., Fong, C. J., Ibrahim, W., Brady, G., Einarsson, G. G., Elborn, J. S., Schembri, S., Marshall, S. E., Palmer, C. N. A., & Chalmers, J. D. (2018). Neutrophil extracellular traps are associated with disease severity and microbiota diversity in patients with chronic obstructive pulmonary disease. Journal of Allergy and Clinical Immunology. https://doi.org/10.1016/j.jaci.2017.04.022

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.