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YKL-40 in Induced Sputum After Allergen Bronchial Provocation in Atopic Asthma

Authors
 JH Lee  ;  KH Park  ;  JW Park  ;  CS Hong 
Citation
 Journal of Investigational Allergology and Clinical Immunology, Vol.22(7) : 501-507, 2012 
Journal Title
 Journal of Investigational Allergology and Clinical Immunology 
ISSN
 1018-9068 
Issue Date
2012
Abstract
BACKGROUND: Serum chitinase-like proteins such as YKL-40 in asthmatic patients are known to positively correlate with disease severity but controversy remains regarding their role. The allergen bronchial provocation test (ABPT) can induce allergic airway inflammation in individuals with atopic asthma. OBJECTIVE: To evaluate the induction and kinetics of YKL-40 during allergen-induced airway inflammation in atopic asthmatics. METHODS: Thirteen patients were enrolled from May to November 2008. They all underwent ABPT with Dermatophagoides farinae crude extract. Induced sputums (IS) and serum were collected 3 times: 7 days before ABPT (baseline), 7 hours after ABPT, and 24 hours after ABPT. We examined the cytology of induced sputum (IS) and measured levels of YKL-40, interleukin (IL) 4, IL-5, IL-13, IL-33, tumor necrosis factor (TNF) alpha, and eosinophilic cationic protein (ECP) in IS and/or serum. RESULTS: Following ABPT, total inflammatory cells, eosinophils, and neutrophils increased in a time-dependent manner in IS. YKL-40 levels were increased in IS but not in serum at 7 or 24 hours after ABPT (P=.011 and P=.006, respectively). Similarly to YKL-40, IL-5 and ECP levels were also increased in IS at 7 and 24 hours after ABPT (P=.011 for IL-5 and P=.006 for ECP). Overall, YKL-40 levels were well correlated with ECP levels in IS (p=0.576, P<.001). CONCLUSIONS: YKL-40 levels increased immediately in IS but not in the serum of atopic asthmatics. The correlation between YKL-40 levels and ECP in IS suggests that YKL-40 may play a pathophysiologic role in human atopic asthma.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
박경희(Park, Kyung Hee) ORCID logo https://orcid.org/0000-0003-3605-5364
박중원(Park, Jung Won) ORCID logo https://orcid.org/0000-0003-0249-8749
이재현(Lee, Jae Hyun) ORCID logo https://orcid.org/0000-0002-0760-0071
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/90867
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