期刊
FREE RADICAL BIOLOGY AND MEDICINE
卷 113, 期 -, 页码 236-243出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.freeradbiomed.2017.09.028
关键词
Glutathione; Myeloperoxidase; Oxidative stress; Protein S-glutathionylation; Neutrophil; Neutrophil elastase
资金
- Canterbury Medical Research Foundation, New Zealand [14/06]
- Health Research Council of New Zealand [15/333]
- National Health and Medical Research Council, Australia [403911, 458513, 1002035, 1102590]
- Cystic Fibrosis Foundation, USA [CFFT SLY4AO, STICK09AO]
- Cystic Fibrosis Australia [1021316]
- National Health and Medical Research Council of Australia [1102590] Funding Source: NHMRC
Neutrophil-derived myeloperoxidase (MPO) is recognized as a major source of oxidative stress at the airway surface of a cystic fibrosis (CF) lung where, despite limited evidence, the antioxidant glutathione is widely considered to be low. The aims of this study were to establish whether oxidative stress or glutathione status are associated with bronchiectasis and whether glutathione deficiency is inherently linked to CF or a consequence of oxidative stress. MPO was measured by ELISA in 577 bronchoalveolar lavage samples from 205 clinically-phenotyped infants and children with CF and 58 children without CF (ages 0.2-6.92 years). Reduced glutathione (GSH), oxidized glutathione species (GSSG; glutathione attached to proteins, GSSP; glutathione sulfonamide, GSA) and allantoin, an oxidation product of uric acid, were measured by mass spectrometry. The odds of having bronchiectasis were associated with MPO and GSSP. GSH was low in children with CF irrespective of oxidation. Oxidized glutathione species were significantly elevated in CF children with pulmonary infections compared to uninfected CF children. In non-CF children, infections had no effect on glutathione levels. An inadequate antioxidant response to neutrophil-mediated oxidative stress during infections exists in CF due to an inherent glutathione deficiency. Effective delivery of glutathione and inhibition of MPO may slow the development of bronchiectasis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据