The role of mitochondrial superoxide anion (O<sub>2</sub>-) on physiological aging in C57BL/6J mice
-
- MIYAZAWA Masaki
- Department of Molecular Life Science, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine
-
- ISHII Takamasa
- Department of Molecular Life Science, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine
-
- YASUDA Kayo
- Department of Molecular Life Science, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine
-
- NODA Setsuko
- Department of Nursing, Tokai University School of Health Science
-
- ONOUCHI Hiromi
- Department of Ophthalmology, Tokai University School of Medicine
-
- HARTMAN Philip S.
- Department of Biology, Texas Christian University, Fort Worth
-
- ISHII Naoaki
- Department of Molecular Life Science, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine
書誌事項
- タイトル別名
-
- The Role of Mitochondrial Superoxide Anion (O2-) on Physiological Aging in C57BL/6J Mice
- The role of mitochondrial superoxide anion (O2−) on physiological aging in C57BL/6J mice
この論文をさがす
抄録
<p>Much attention has been focused on the mitochondrial superoxide anion (O2-), which is also a critical free radial produced by ionizing radiation. The specific role of the mitochondrial O2- on physiological aging in mammals is still unclear despite wide-spread evidence that oxidative stress is involved in aging and age-related diseases. The major endogenous source of O2- is generated as a byproduct of energy metabolism from mitochondria. In order to better understand how O2-relates to metazoan aging, we have comprehensively examined age-related changes in the levels of oxidative damage, mitochondrial O2- production, mitochondrial antioxidant enzyme activity and apoptosis induction in key organs of an inbred mouse strain (C57BL/6J). Oxidative damage accumulated and excess apoptosis occurred in the brain, oculus and kidney with aging, but comparatively little occurred in the heart and muscle. These rates are correlated with O2- levels. Mitochondrial O2- production levels increased with aging in the brain, oculus and kidney, and did not significantly increased in the heart and muscle. In contrast to O2- production, mitochondrial SOD activities increased in heart and muscle, and remained unchanged in the brain, oculus and kidney with aging. These results suggest that O2- production has high organ specificity, and oxidative damage by O2- from mitochondria mediated apoptosis can lead to organ atrophy and physiological dysfunction. In addition, O2- from mitochondria plays a core role in physiological aging.
収録刊行物
-
- Journal of Radiation Research
-
Journal of Radiation Research 50 (1), 73-83, 2009
Journal of Radiation Research 編集委員会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001205216558848
-
- NII論文ID
- 110007042073
-
- NII書誌ID
- AA00705792
-
- ISSN
- 13499157
- 04493060
-
- NDL書誌ID
- 9776732
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可