Vanguards of Paradigm Shift in Radiation Biology: Radiation-Induced Adaptive and Bystander Responses
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- MATSUMOTO Hideki
- Division of Oncology, Biomedical Imaging Research Center, University of Fukui
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- HAMADA Nobuyuki
- Department of Quantum Biology, Division of Bioregulatory Medicine, Gunma University Graduate School of Medicine Microbeam Radiation Biology Group, Radiation-Applied Biology Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA)
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- TAKAHASHI Akihisa
- Department of Biology, Nara Medical University
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- KOBAYASHI Yasuhiko
- Department of Quantum Biology, Division of Bioregulatory Medicine, Gunma University Graduate School of Medicine Microbeam Radiation Biology Group, Radiation-Applied Biology Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA)
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- OHNISHI Takeo
- Department of Biology, Nara Medical University
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Abstract
The risks of exposure to low dose ionizing radiation (below 100 mSv) are estimated by extrapolating from data obtained after exposure to high dose radiation, using a linear no-threshold model (LNT model). However, the validity of using this dose-response model is controversial because evidence accumulated over the past decade has indicated that living organisms, including humans, respond differently to low dose/low dose-rate radiation than they do to high dose/high dose-rate radiation. In other words, there are accumulated findings which cannot be explained by the classical "target theory" of radiation biology. The radioadaptive response, radiation-induced bystander effects, low-dose radio-hypersensitivity, and genomic instability are specifically observed in response to low dose/low dose-rate radiation, and the mechanisms underlying these responses often involve biochemical/molecular signals that respond to targeted and non-targeted events. Recently, correlations between the radioadaptive and bystander responses have been increasingly reported. The present review focuses on the latter two phenomena by summarizing observations supporting their existence, and discussing the linkage between them from the aspect of production of reactive oxygen and nitrogen species.<br>
Journal
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- Journal of Radiation Research
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Journal of Radiation Research 48 (2), 97-106, 2007
Journal of Radiation Research Editorial Committee
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Keywords
Details 詳細情報について
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- CRID
- 1390001205218010368
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- NII Article ID
- 110006241796
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- NII Book ID
- AA00705792
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- COI
- 1:STN:280:DC%2BD2s7ovFemug%3D%3D
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- ISSN
- 13499157
- 04493060
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- NDL BIB ID
- 8691289
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed