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Serum IL-1β and IL-17 levels in patients with COPD: associations with clinical parameters

Authors Zou Y, Chen X, Liu J, Zhou DB, Kuang X, Xiao J, Yu Q, Lu XX, Li W, Xie B, Chen Q

Received 7 January 2017

Accepted for publication 3 April 2017

Published 24 April 2017 Volume 2017:12 Pages 1247—1254


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Lucy Goodman

Peer reviewer comments 3

Editor who approved publication: Dr Richard Russell

Yong Zou,1 Xi Chen,1 Jie Liu,2 Dong bo Zhou,1 Xiao Kuang,1 Jian Xiao,1 Qiao Yu,1 Xiaoxiao Lu,1 Wei Li,1 Bin Xie,1 Qiong Chen1

1Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, 2Department of Emergency, The First People’s Hospital of Changsha, Changsha, People’s Republic of China

COPD is a chronic airway inflammatory disease characterized mainly by neutrophil airway infiltrations. Interleukin (IL)-1β and IL-17 are the key mediators of neutrophilic airway inflammation in COPD. This study was undertaken to evaluate the serum IL-1β and IL-17 levels and associations between these two key mediators with clinical parameters in COPD patients. Serum samples were collected from 60 COPD subjects during the acute exacerbation of COPD, 60 subjects with stable COPD and 40 healthy control subjects. Commercial enzyme-linked immunosorbent assay kits were used to measure the serum IL-1β and IL-17 concentrations. The association between serum IL-1β and IL-17 with FEV1% predicted, C-reactive protein, neutrophil percentage and smoking status (pack-years) was assessed in the COPD patients. We found that serum IL-1β and IL-17 levels in acute exacerbation of COPD subjects were significantly higher than that in stable COPD or control subjects and were positively correlated to serum C-reactive protein levels, neutrophil % and smoking status (pack-years) but negatively correlated with FEV1% predicted in COPD patients. More importantly, serum IL-1β levels were markedly positively associated with serum IL-17 levels in patients with COPD (P=0.741, P<0.001). In conclusion, elevated serum IL-1β and IL-17 levels may be used as a biomarker for indicating persistent neutrophilic airway inflammation and potential ongoing exacerbation of COPD.

Keywords: neutrophilic airway inflammation, cigarette smoking, exacerbation

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