Effect of Dietary Vitamin E Supplementation on Liver Oxidative Damage in Rats with Water-Immersion Restraint Stress
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- OHTA Yoshiji
- Department of Chemistry, Fujita Health University School of Medicine
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- YASHIRO Koji
- Department of Chemistry, Fujita Health University School of Medicine
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- OHASHI Koji
- Department of Clinical Biochemistry, Faculty of Medical Technology, Fujita Health University School of Health Sciences
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- HORIKOSHI Yosuke
- Division of Medical Biochemistry, Department of Pathophysiological and Therapeutic Science, Tottori University
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- KUSUMOTO Chiaki
- Division of Medical Biochemistry, Department of Pathophysiological and Therapeutic Science, Tottori University
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- MATSURA Tatsuya
- Division of Medical Biochemistry, Department of Pathophysiological and Therapeutic Science, Tottori University
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- FUKUZAWA Kenji
- Faculty of Pharmacy, Yasuda Women’s University
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Abstract
We examined how dietary supplementation of vitamin E protects against liver oxidative damage in rats with water-immersion restraint stress (WIRS). Before WIRS exposure, rats received a normal diet (ND) or vitamin E-supplemented diet (VESD) (500 IU α-tocopherol/kg diet) at a mean dose of 15 g/animal/d for 4 wk. The two diet groups had serum transaminases and lactate dehydrogenase activities and adrenocorticotropic hormone, corticosterone, and glucose levels to a similar extent. VESD-fed rats had higher liver α-tocopherol concentrations and lower liver ascorbic acid, total coenzyme Q9 (CoQ9), reduced CoQ9, reduced CoQ10, and lipid peroxide (LPO) concentrations than ND-fed rats. When the two diet groups were exposed to 6 h of WIRS, the serum liver cell damage index enzyme activities increased more greatly in ND-fed rats than in VESD-fed rats but the serum stress marker levels increased to a similar extent. The WIRS exposure caused no change in liver LPO concentration with the further increase in liver α-tocopherol concentration in VESD-fed rats but increased liver LPO concentration without changing liver α-tocopherol concentration in ND-fed rats. Upon the WIRS exposure, liver reduced glutathione concentration decreased with the further decrease in liver ascorbic acid concentration in VESD-fed rats and those concentrations decreased in ND-fed rats. The WIRS exposure recovered the decreased liver total CoQ9 and reduced CoQ9 concentrations in VESD-fed rats but decreased liver total CoQ9, reduced CoQ9, and reduced CoQ10 concentrations in ND-fed rats. These results indicate that dietary vitamin E supplementation protects against liver oxidative damage without affecting the stress response in rats with WIRS.
Journal
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- Journal of Nutritional Science and Vitaminology
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Journal of Nutritional Science and Vitaminology 61 (2), 113-122, 2015
Center for Academic Publications Japan
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Details 詳細情報について
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- CRID
- 1390282681301167360
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- NII Article ID
- 130005074127
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- NII Book ID
- AA00703822
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- ISSN
- 18817742
- 03014800
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- NDL BIB ID
- 026378799
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- PubMed
- 26052141
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed