Radiation Biology of Caenorhabditis elegans: Germ Cell Response, Aging and Behavior
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- SAKASHITA Tetsuya
- Microbeam Radiation Biology Group, Japan Atomic Energy Agency
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- TAKANAMI Takako
- Graduate School of Life Sciences, Tohoku University
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- YANASE Sumino
- School of Sports and Health Science, Daito Bunka University
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- HAMADA Nobuyuki
- Space Radiation Research Unit, International Open Laboratory, National Institute of Radiological Sciences
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- SUZUKI Michiyo
- Microbeam Radiation Biology Group, Japan Atomic Energy Agency
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- KIMURA Takafumi
- Graduate School of Life Sciences, Tohoku University
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- KOBAYASHI Yasuhiko
- Microbeam Radiation Biology Group, Japan Atomic Energy Agency
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- ISHII Naoaki
- Department of Molecular Life Science, Tokai University School of Medicine
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- HIGASHITANI Atsushi
- Graduate School of Life Sciences, Tohoku University
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抄録
The study of radiation effect in Caenorhabditis (C.) elegans has been carried out over three decades and now allow for understanding at the molecular, cellular and individual levels. This review describes the current knowledge of the biological effects of ionizing irradiation with a scope of the germ line, aging and behavior. In germ cells, ionizing radiation induces apoptosis, cell cycle arrest and DNA repair. Lots of molecules involved in these responses and functions have been identified in C. elegans, which are highly conserved throughout eukaryotes. Radiosensitivity and the effect of heavy-ion microbeam irradiation on germ cells with relationship between initiation of meiotic recombination and DNA lesions are discussed. In addition to DNA damage, ionizing radiation produces free radicals, and the free radical theory is the most popular aging theory. A first signal transduction pathway of aging has been discovered in C. elegans, and radiation-induced metabolic oxidative stress is recently noted for an inducible factor of hormetic response and genetic instability. The hormetic response in C. elegans exposed to oxidative stress is discussed with genetic pathways of aging. Moreover, C. elegans is well known as a model organism for behavior. The recent work reported the radiation effects via specific neurons on learning behavior, and radiation and hydrogen peroxide affect the locomotory rate similarly. These findings are discussed in relation to the evidence obtained with other organisms. Altogether, C. elegans may be a good "in vivo" model system in the field of radiation biology.
収録刊行物
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- Journal of Radiation Research
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Journal of Radiation Research 51 (2), 107-121, 2010
Journal of Radiation Research 編集委員会
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詳細情報 詳細情報について
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- CRID
- 1390282680192266752
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- NII論文ID
- 10025914355
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- NII書誌ID
- AA00705792
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- ISSN
- 13499157
- 04493060
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- NDL書誌ID
- 10611668
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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