Effects of different exercise durations on Keap1-Nrf2-ARE pathway activation in mouse skeletal muscle
Article
Article Title | Effects of different exercise durations on Keap1-Nrf2-ARE pathway activation in mouse skeletal muscle |
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ERA Journal ID | 2219 |
Article Category | Article |
Authors | Li, Tieying (Author), He, Sheyi (Author), Liu, Sixue (Author), Kong, Zhenxing (Author), Wang, Jianxiong (Author) and Zhang, Ying (Author) |
Journal Title | Free Radical Research |
Journal Citation | 49 (10), pp. 1269-1274 |
Number of Pages | 6 |
Year | 2015 |
Publisher | Taylor & Francis |
Place of Publication | Switzerland |
ISSN | 1029-2470 |
1071-5762 | |
Digital Object Identifier (DOI) | https://doi.org/10.3109/10715762.2015.1066784 |
Web Address (URL) | http://www.tandfonline.com/doi/full/10.3109/10715762.2015.1066784 |
Abstract | The purpose of this study was to investigate the effects of acute exercise stress on the nuclear factor-erythroid2 p45-related factor 2 (Nrf2)/antioxidant response element (ARE) transactivation, Kelch-like ECH-associated protein 1(Keap1) cytosolic protein and Nrf2 nucleoprotein expressions, Nrf2 target genes mRNA expressions, and GSH/GSSG ratio level; with a particular focus on the changes of Keap1-Nrf2-ARE pathway activation following different durations of exercise. Wild-type mice (C57BL/6J, two months old) were separated into one-hour and six-hour treadmill running groups, as well as a non-exercise control group (n=10 in each group). Measurements of Nrf2/ARE transactivation, Nrf2 nucleoprotein expressions, Keap1 cytosolic protein expression, Nrf2 target genes' mRNA expressions (superoxide dismutase-1 (SOD1), superoxide dismutase-2 (SOD2), γ-glutamyl cysteine ligase-modulatory (GCLm), γ-glutamylcysteine ligase-catalytic (GCLc), glutathione reductase (GR), glutathione peroxydase-1 (Gpx1), catalase (CAT) and hemoxygenase-1 (Ho-1)), and glutathione redox (GSH/GSSG) ratio were carried out immediately after exercise. The results showed significant increases in Keap1-Nrf2-ARE pathway activation and the mRNA expressions of six measured enzymes in skeletal muscle after six hours of exercise; while in the one-hour exercise group, there was no change in Keap1-Nrf2-ARE pathway activation and only two enzymes' mRNA expressions were increased. It is suggested that the changes in Keap1-Nrf2-ARE pathway activation and its target genes' mRNA expressions were dependent on the exercise duration, with longer duration associated with higher responses. |
Keywords | Nrf2 transactivation, oxidative stress, acute exercise, antioxidant enzyme |
ANZSRC Field of Research 2020 | 420702. Exercise physiology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Beijing Sport University, China |
Ministry of Education, China | |
School of Health and Wellbeing | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3149/effects-of-different-exercise-durations-on-keap1-nrf2-are-pathway-activation-in-mouse-skeletal-muscle
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