Yue Teng1, Peili Sun1, Jingying Zhang1, Rongbin Yu2, Jianling Bai2, Xin Yao3, Mao Huang1, Ian M Adcock4, Peter J Barnes4. 1. Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China. 2. Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China. 3. Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China. Electronic address: yaoxin@njmu.edu.cn. 4. Airway Disease Section, National Heart and Lung Institute, Imperial College, London, England.
Abstract
BACKGROUND: The measurement of hydrogen peroxide (H(2)O(2)) in exhaled breath condensate (EBC) has been proposed as a noninvasive way of monitoring airway inflammation. However, results from individual studies on EBC H(2)O(2) evaluation of asthma are conflicting. The purpose of this study was to explore whether EBC H(2)O(2) is elevated in people with asthma and whether it reflects disease severity and disease control or responds to corticosteroid treatment. METHODS: Studies were identified by searching PubMed, Embase, Cochrane Database, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and www.controlled-trials.com for relevant reports published before September 2010. Observational studies comparing levels of EBC H(2)O(2) between patients with asthma who were nonsmokers and healthy subjects were included. Data were independently extracted by two investigators and analyzed using Stata 10.0 software. RESULTS: Eight studies (involving 728 participants) were included. EBC H(2)O(2) concentrations were significantly higher in patients with asthma who were nonsmokers compared with healthy subjects, and higher values of EBC H(2)O(2) were observed at each level of asthma, classified either by severity or control level, and the values were negatively correlated with FEV(1). In addition, EBC H(2)O(2) concentrations were lower in patients with asthma treated with corticosteroids than in patients with asthma not treated with corticosteroids. CONCLUSIONS: H(2)O(2) might be a promising biomarker for guiding asthma treatment. However, further investigation is needed to establish its role.
BACKGROUND: The measurement of hydrogen peroxide (H(2)O(2)) in exhaled breath condensate (EBC) has been proposed as a noninvasive way of monitoring airway inflammation. However, results from individual studies on EBCH(2)O(2) evaluation of asthma are conflicting. The purpose of this study was to explore whether EBCH(2)O(2) is elevated in people with asthma and whether it reflects disease severity and disease control or responds to corticosteroid treatment. METHODS: Studies were identified by searching PubMed, Embase, Cochrane Database, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and www.controlled-trials.com for relevant reports published before September 2010. Observational studies comparing levels of EBCH(2)O(2) between patients with asthma who were nonsmokers and healthy subjects were included. Data were independently extracted by two investigators and analyzed using Stata 10.0 software. RESULTS: Eight studies (involving 728 participants) were included. EBCH(2)O(2) concentrations were significantly higher in patients with asthma who were nonsmokers compared with healthy subjects, and higher values of EBCH(2)O(2) were observed at each level of asthma, classified either by severity or control level, and the values were negatively correlated with FEV(1). In addition, EBCH(2)O(2) concentrations were lower in patients with asthma treated with corticosteroids than in patients with asthma not treated with corticosteroids. CONCLUSIONS:H(2)O(2) might be a promising biomarker for guiding asthma treatment. However, further investigation is needed to establish its role.
Authors: Miguel E Quimbar; Steven Q Davis; Sherif T Al-Farra; Amanda Hayes; Valentina Jovic; Maximillian Masuda; Alexander R Lippert Journal: Anal Chem Date: 2020-10-16 Impact factor: 6.986
Authors: Sudakshina Ghosh; Belinda Willard; Suzy A A Comhair; Patricia Dibello; Weiling Xu; Sruti Shiva; Kulwant S Aulak; Michael Kinter; Serpil C Erzurum Journal: Antioxid Redox Signal Date: 2012-09-07 Impact factor: 8.401