PMID- 22080589 OWN - NLM STAT- MEDLINE DCOM- 20120514 LR - 20151119 IS - 1469-994X (Electronic) IS - 1462-2203 (Linking) VI - 14 IP - 2 DP - 2012 Feb TI - Pulmonary oxidative stress is induced by maximal exercise in young cigarette smokers. PG - 243-7 LID - 10.1093/ntr/ntr237 [doi] AB - INTRODUCTION: Oxidative stress is induced by both cigarette smoking and acute exercise. It has also been reported that exercise can induce plasma oxidative stress in young cigarette smokers. However, no previous report has demonstrated that exercise induces pulmonary oxidative stress in cigarette smokers. The aim of this study was to determine whether pulmonary oxidative stress is induced by maximal exercise in cigarette smokers as measured by reactive oxygen species generation and total antioxidant content. METHODS: Fifteen male smokers (mean age: 25.9 +/- 2.9 years) and 18 male nonsmokers (mean age: 24.2 +/- 4.3 years) participated in this study. Hydrogen peroxide (H(2)O(2)) concentration and biological antioxidant potential (BAP) in exhaled breath condensate (EBC) were measured at baseline and after maximal exercise in the Wingate anaerobic test. RESULTS: A significant interaction of group by time was observed for EBC H2O2 concentration (p = .015). After exercise, EBC H(2)O(2) concentrations were significantly increased in the smoking group (p = .030) but not in the nonsmoking group. There were no significant changes in EBC BAP in either group. CONCLUSIONS: These findings indicate that in cigarette smokers, maximal exercise induces pulmonary oxidative stress, which may lead to oxidative damage in the lungs. FAU - Taito, Shunsuke AU - Taito S AD - Graduate School of Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan. FAU - Sekikawa, Kiyokazu AU - Sekikawa K FAU - Domen, Sayaka AU - Domen S FAU - Konishi, Kana AU - Konishi K FAU - Kimura, Tatsushi AU - Kimura T FAU - Takahashi, Makoto AU - Takahashi M FAU - Inamizu, Tsutomu AU - Inamizu T FAU - Hamada, Hironobu AU - Hamada H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111111 PL - England TA - Nicotine Tob Res JT - Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco JID - 9815751 RN - 0 (Antioxidants) RN - 0 (Biomarkers) RN - 0 (Reactive Oxygen Species) RN - BBX060AN9V (Hydrogen Peroxide) SB - IM MH - Adult MH - Antioxidants/metabolism MH - Biomarkers/metabolism MH - Breath Tests MH - Case-Control Studies MH - Exercise/*physiology MH - Exhalation MH - Humans MH - Hydrogen Peroxide/analysis MH - Lung Diseases/metabolism MH - Male MH - *Oxidative Stress MH - Reactive Oxygen Species/metabolism MH - Smoking/*adverse effects/metabolism MH - Young Adult EDAT- 2011/11/15 06:00 MHDA- 2012/05/15 06:00 CRDT- 2011/11/15 06:00 PHST- 2011/11/15 06:00 [entrez] PHST- 2011/11/15 06:00 [pubmed] PHST- 2012/05/15 06:00 [medline] AID - ntr237 [pii] AID - 10.1093/ntr/ntr237 [doi] PST - ppublish SO - Nicotine Tob Res. 2012 Feb;14(2):243-7. doi: 10.1093/ntr/ntr237. Epub 2011 Nov 11.