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Increased sputum levels of thymus and activation-regulated chemokine in children with asthma not eosinophilic bronchitis

 M.J. Kim  ;  H.S. Lee  ;  I.S. Sol  ;  M.N. Kim  ;  J.Y. Hong  ;  K.E. Lee  ;  Y.H. Kim  ;  K.W. Kim  ;  M.H. Sohn  ;  K.-E. Kim 
 Allergologia et Immunopathologia, Vol.45(3) : 220-226, 2017 
Journal Title
 Allergologia et Immunopathologia 
Issue Date
Asthma ; Biomarkers ; Bronchitis ; Chemokine ; Child ; Sputum ; Thymus and activation-regulated chemokine
BACKGROUND: Thymus and activation-regulated chemokine (TARC), a member of the CC chemokine family, plays a crucial role in Th2-specific inflammation. We aimed to determine the concentration of sputum TARC in children with asthma and eosinophilic bronchitis (EB) and its relation with eosinophilic inflammation, pulmonary function, and bronchial hyper-responsiveness. METHODS: In total, 90 children with asthma, 38 with EB, and 45 control subjects were enrolled. TARC levels were measured in sputum supernatants using an ELISA. We performed pulmonary function tests and measured exhaled fractional nitric oxide, eosinophil counts in blood, and sputum and serum levels of total IgE in all children. RESULTS: Sputum TARC levels were significantly higher in children with asthma than in either children with EB (p=0.004) or the control subjects (p=0.014). Among patients with asthma, sputum TARC concentration was higher in children with sputum eosinophilia than in those without sputum eosinophilia (p=0.035). Sputum TARC levels positively correlated with eosinophil counts in sputum, serum total IgE levels, exhaled fractional nitric, and the bronchodilator response. Negative significant correlations were found between sputum TARC and FEV1/FVC (the ratio of forced expiratory volume in one second and forced expiratory vital capacity) or PC20 (the provocative concentration of methacholine causing a 20% decrease in the FEV1). CONCLUSION: Elevated TARC levels in sputum were detected in children with asthma but not in children with EB. Sputum TARC could be a supportive marker for discrimination of asthma from EB in children showing characteristics of eosinophilic airway inflammation.
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1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Won(김경원) ORCID logo https://orcid.org/0000-0003-4529-6135
Kim, Mina(김미나) ORCID logo https://orcid.org/0000-0002-1675-0688
Kim, Min Jung(김민정) ORCID logo https://orcid.org/0000-0002-5634-9709
Kim, Yoon Hee(김윤희) ORCID logo https://orcid.org/0000-0002-2149-8501
Sol, In Suk(설인숙) ORCID logo https://orcid.org/0000-0003-2470-9682
Sohn, Myung Hyun(손명현) ORCID logo https://orcid.org/0000-0002-2478-487X
Hong, Jung Yeon(홍정연) ORCID logo https://orcid.org/0000-0003-0406-9956
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