The relationship between acrolein and oxidative stress in COPD: in systemic plasma and in local lung tissue
Received 13 March 2019
Accepted for publication 30 May 2019
Published 12 July 2019 Volume 2019:14 Pages 1527—1537
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Melinda Thomas
Peer reviewer comments 2
Editor who approved publication: Dr Richard Russell
Masanori Yasuo,1 Yunden Droma,1 Yoshiaki Kitaguchi,1 Michiko Ito,1 Hitomi Imamura,1 Masatomo Kawakubo,2 Masayuki Hanaoka1
1The First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano, Japan; 2Department of Molecular Pathology, Shinshu University Graduate School of Medicine, Matsumoto, Nagano, Japan
Purpose: Cigarette smoke produces a high level of acrolein, which is thought to be pathogenically involved in the development of chronic obstructive pulmonary disease (COPD). The present study investigated the pathological role of acrolein in the development of COPD.
Patients and methods: Acrolein concentration was measured in plasmas obtained from 47 patients with COPD and 18 current smokers without COPD, and in supernatants of homogenized lung tissues obtained from 10 never-smokers, 8 current smokers, and 8 patients with COPD by high-performance liquid chromatography. Oxidant status and antioxidant activity were measured using derivatives of reactive oxygen metabolite (d-ROM) and bio-antioxidant power (BAP), respectively, in the Free Radical Elective Evaluation FRAS4 system. In addition, immunohistochemistry was used to evaluate the over-presentation of acrolein in lung tissues of patients with COPD.
Results: Plasma concentrations of acrolein were significantly higher in the patients with COPD than the non-COPD smokers (P<0.001), which significantly correlated with the oxidant status in patients with COPD (R=0.69, P<0.05). Similar pathological alterations in acrolein concentrations were found in the lung tissue supernatants of patients with COPD, which significantly correlated with the oxidant status in patients with COPD. Furthermore, acrolein was strongly expressed in the lung tissues of patients with COPD.
Conclusion: The increased acrolein concentrations were highly involved in the pathogenesis of COPD through interference in the balance of oxidative stress versus antioxidant potentiality.
Keywords: acrolein, smoke, antioxidant potential, oxidative stress, plasma, lung tissue
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