Oxidative Stress in the Ischemic and Non-Ischemic Parts of the Rat Liver after Two-Thirds Ischemia/Reperfusion
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概要
- 論文の詳細を見る
Rat liver was subjected to two-thirds warm ischemia for 45 min and reperfusion (I/R) to evaluate the resulting oxidative stress. The plasma alanine aminotransferase and aspartate aminotransferase activities were significantly higher than those in the sham group 1.5–24 h after I/R, showing extensive liver cell death. The level of oxidative stress was compared between the ischemic and non-ischemic regions based on the change in antioxidative vitamins C and E. The vitamin C level was significantly decreased during I/R in both the ischemic and non-ischemic regions 0, 1.5, 3, 6, 12, and 24 h after the start of reperfusion, showing enhanced oxidative stress even in the non-ischemic lobules. This decrease of vitamin C in the ischemic region was significantly higher than that in the non-ischemic lobules, while the vitamin E content was decreased only in the ischemic lobes, demonstrating higher oxidative stress in the ischemic region than that in the non-ischemic region. Early transient activation of cytoprotective extracellular signal-related kinase (ERK) was apparent in both the ischemic and non-ischemic lobules, reflecting oxidative stress in both regions. Early transient activation of c-Jun NH2-terminal kinase (JNK) was only apparent in the ischemic region, corresponding to extensive oxidative stress and liver cell death. These results demonstrate that significant oxidative stress was induced, but that JNK leading to cell death was not activated in the non-ischemic part of the liver.
- 2010-05-23
著者
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Ichi Ikuyo
Dep. Of Food Sci. And Nutrition Nara Women's Univ.
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KOGA Eriko
Department of Food Science and Nutrition, Nara Women's University
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WASHINO Yukiko
Department of Food Science and Nutrition, Nara Women's University
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ICHI Ikuyo
Department of Food Science and Nutrition, Nara Women's University
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KOJO Shosuke
Department of Food Science and Nutrition, Nara Women's University
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KITAMURA YUKO
Department of Internal Medicine, Keio University School of Medicine
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MATSURA Tatsuya
Division of Medical Biochemistry, Department of Pathophysiology and Therapeutic Science, Faculty of
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Kojo Shosuke
Dep. Of Food Sci. And Nutrition Nara Women's Univ.
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Kojo Shosuke
Department Of Food Science & Nutrition Nara Women's University
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Matsura Tatsuya
Division Of Medical Biochemistry Department Of Pathophysiological And Therapeutic Science Tottori Un
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Washino Yukiko
Department Of Food Science And Nutrition Nara Women's University
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ITO Ayaka
Department of Food Science and Nutrition, Nara Women's University
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KAWAGOE Maiko
Department of Food Science and Nutrition, Nara Women's University
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NAKAZAKI Chihiro
Department of Food Science and Nutrition, Nara Women's University
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KISO Kaori
Department of Food Science and Nutrition, Nara Women's University
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Kitamura Yuko
Department Of Food Science And Nutrition Nara Women's University
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Koga Eriko
Department Of Food Science And Nutrition Nara Women's University
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Ichi Ikuyo
Department Of Food Science And Nutrition Nara Women's University
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Ito Ayaka
Department Of Food Science And Nutrition Nara Women's University
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Kiso Kaori
Department Of Food Science And Nutrition Nara Women's University
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Kawagoe Maiko
Department Of Food Science And Nutrition Nara Women's University
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Nakazaki Chihiro
Department Of Food Science And Nutrition Nara Women's University
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Kojo Shosuke
The Open Univ. Of Japan
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