Production of reactive persulfide species in chronic obstructive pulmonary disease

Tadahisa Numakura, Hisatoshi Sugiura, Takaaki Akaike, Tomoaki Ida, Shigemoto Fujii, Akira Koarai, Mitsuhiro Yamada, Katsuhiro Onodera, Yuichiro Hashimoto, Rie Tanaka, Kei Sato, Yutaka Shishikura, Taizou Hirano, Satoru Yanagisawa, Naoya Fujino, Tatsuma Okazaki, Tsutomu Tamada, Yasushi Hoshikawa, Yoshinori Okada, Masakazu Ichinose

研究成果: ジャーナルへの寄稿学術論文査読

55 被引用数 (Scopus)

抄録

Background Oxidative stress is a major aetiological factor driving chronic obstructive pulmonary disease (COPD). Recently recognised as potent antioxidants, reactive persulfide and polysulfide species are biosynthesised by cystathionine β-synthase and cystathionine Î 3-lyase. The production of reactive persulfide and polysulfide species in the lungs of patients with COPD remain unknown. Objectives The aim of this study was to examine the production of reactive persulfides and polysulfides, such as glutathione persulfide (GSSH), cysteine persulfide (CysSSH) and glutathione trisulfide (GSSSH), in lung-resident cells and epithelial lining fluid (ELF) obtained from patients with mild to moderate COPD. Methods Lung tissues, primary lung cells, ELF and sputum were obtained. The amounts of reactive persulfides and polysulfides in the cells and ELF were measured by liquid chromatography-tandem mass spectrometry with β-(4-hydroxyphenyl) ethyl iodoacetamide as a trapping agent for hydroper/polysulfides. The amounts of synthases in the lung tissues, sputum and primary cells were quantified. Results The amounts of GSSH, CysSSH and GSSSH were decreased in the lung cells and ELF from patients with COPD. The amounts of reactive persulfides and polysulfides in the lung cells had a positive correlation with the degree of airflow limitation. By contrast, the amounts of the synthases were increased in the lung tissues and sputum cells of patients with COPD. Conclusions We have identified a decrease in reactive persulfide and polysulfide species in the lungs of patients with COPD. These data suggest that the newly detected antioxidants reactive persulfides and polysulfides could be associated with the redox balance in the lungs of patients with COPD.

本文言語英語
ページ(範囲)1074-1083
ページ数10
ジャーナルThorax
72
12
DOI
出版ステータス出版済み - 01-12-2017

All Science Journal Classification (ASJC) codes

  • 呼吸器内科

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