International Journal of COPD (May 2021)

Eicosanoids and Eosinophilic Inflammation of Airways in Stable COPD

  • Celejewska-Wójcik N,
  • Kania A,
  • Górka K,
  • Nastałek P,
  • Wójcik K,
  • Gielicz A,
  • Mastalerz L,
  • Sanak M,
  • Sładek K

Journal volume & issue
Vol. Volume 16
pp. 1415 – 1424

Abstract

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Natalia Celejewska-Wójcik,1 Aleksander Kania,1 Karolina Górka,1 Paweł Nastałek,1 Krzysztof Wójcik,2 Anna Gielicz,3 Lucyna Mastalerz,1 Marek Sanak,3 Krzysztof Sładek1 1Department of Pulmonology, 2nd Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland; 2 2nd Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland; 3Department of Molecular Biology and Clinical Genetics, Faculty of Medicine, Jagiellonian University Medical College, Kraków, PolandCorrespondence: Natalia Celejewska-Wójcik 2nd Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, ul. Jakubowskiego 2, Krakow, 30-688, PolandTel +48 12 400 30 53Fax +48 12 400 30 67Email [email protected]: Lipid mediators, particularly eicosanoids, are associated with airway inflammation, especially with the eosinophilic influx. This study aimed to measure lipid mediators and cells in induced sputum, that could possibly reflect the inflammatory process in the bronchial tree of COPD subjects.Patients and Methods: Eighty patients diagnosed with COPD and 37 healthy controls participated in the study. Induced sputum samples were ascertained for differential cell count and induced sputum supernatant concentrations of selected eicosanoids by the means of gas chromatography/mass spectrometry and high-performance liquid chromatography/tandem mass spectrometry.Results: Increased sputum eosinophilia was associated with higher concentrations of selected proinflammatory eicosanoids. In COPD subjects prostaglandin D2 and 11-dehydro-thromboxane B2 correlated negatively with airway obstruction measured by FEV1 and FEV1/FVC values. COPD subjects with disease exacerbations during past 12 months had significantly higher concentrations of prostaglandin D2, 12-oxo-eicosatetraenoic acid and 5-oxo-eicosatetraenoic acid.Conclusion: Stable COPD is often associated with eosinophil influx in the lower airways and elevated concentrations of eicosanoids that is reflected by some disease characteristics.Keywords: chronic obstructive pulmonary disease, eosinophils, eicosanoids

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