• 1. Department of Respiratory Medicine, The Seventh People’s Hospital of Shenzhen, Shenzhen, Guangdong 518081, P.R.China;
  • 2. Department of Respiratory Medicine, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R.China;
YAN Binlin, Email: yblelite@163.com
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Objective  To investigate the changes and clinical significance of cytokines and inflammatory species in exhaled breath condensate (EBC) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods  Thirty AECOPD patients admitted in the Department of Respiratory Medicine from March 2015 to August 2016 (smokers and passive smokers) and 21 healthy volunteers (non-smokers) were recruited in this prospective study. General information and EBC were collected from each subject. The concentrations of interleukin-17 (IL-17), IL-10, and 8-isoprestane (8-iso-PG) in EBC were measured by enzyme-linked immunosorbent assay, meanwhile lung function test was performed in the AECOPD patients. Results  Both IL-17 (ng/L) and 8-iso-PG (ng/L) levels increased significantly in the AECOPD patients before and after treatment compared with the healthy controls (10.74±1.02 and 5.65±0.88 vs. 3.36±0.61, 12.35±2.25 and 9.65±1.22 vs. 6.93±1.15, P<0.05). However, IL-10 level significantly decreased in the AECOPD patients before and after treatment compared with the healthy controls (1.68±0.17 and 2.59±0.31 vs. 2.85±0.43, P<0.05). Both IL-17 and 8-iso-PG levels in the AECOPD patients were significantly lower after treatment than those before treatment (5.65±0.88 vs. 10.74±1.02, 9.65±1.22 vs. 12.35±2.25, P<0.05), but IL-10 level were significantly higher aftertreatment than those before treatment (2.59±0.31 vs. 1.68±0.17, P<0.05). FEV1, FVC, and FEV1%pred improved significantly after treatment (P<0.01). FEV1, FEV1/FVC and FEV1%pred were not significantly correlated with IL-17, IL-10 or 8-is-PG levels. Conclusion  IL-17, IL-10 and 8-iso-PG may be involved in the pathogenesis of COPD, and may be important biomarkers in monitoring airway inflammation and oxide stress during the treatment of AECOPD patients.

Citation: YAN Binlin, GU Weili, DU Juan, ZHOU Huidong. Clinical significance of IL-17, IL-10, and 8-iso-PG in exhaled breath condensate of patients with acute exacerbation of chronic obstructive pulmonary disease. Chinese Journal of Respiratory and Critical Care Medicine, 2017, 16(2): 142-146. doi: 10.7507/1671-6205.201609016 Copy

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