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Radiation-Induced Chromosome Damage in G_1 Phase Cells as Breaks in Permature Chromosome Condensation (PCC) and Its Biological Meaning
http://hdl.handle.net/10069/18732
http://hdl.handle.net/10069/18732f305c901-1ec4-431f-9031-e24d670b1a0d
名前 / ファイル | ライセンス | アクション |
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RR33_Supple_1_87_94.pdf (546.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2008-07-24 | |||||
タイトル | ||||||
タイトル | Radiation-Induced Chromosome Damage in G_1 Phase Cells as Breaks in Permature Chromosome Condensation (PCC) and Its Biological Meaning | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Premature chromosome condensation (PCC) | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chromatid aberration | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | high LET radiations | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | mutation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | morpholo-gical transformation | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Watanabe, Masami
× Watanabe, Masami× Suzuki, Masao× Suzuki, Keiji× Nakano, Kazushiro× Yatagai, Fumio |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We studied radiation-induced chromosome fragmentation in the G_1-phase of Syrian golden hamster embryo (SHE) cells by premature chromosome condensation (PCC). SHE cells were irradiated with ^<14>N ions (95 MeV) and ^4He ions (22 MeV) generated by the cyclotron and ^<137>Cs gamma rays. The number of chromosome breaks in PCC (PCC break) induced by 14N ions was higher than in those by the others. High linear energy transfer (LET) radiation (heavy ions) is more effective in the induction of PCC breaks than low LET radiation (gamma-rays). 530 key/μm ^<14>N induced PCC 2.4 times more than ^<137>Cs gamma rays. There is an inverse relationship between the number of chromatid delations and the incidence of mutation or transformation. There is, however, a good correlation between the incidence of PCC breaks and frequen-cies of mutation and/or morphological transformation. Although over 95% of the PCC breaks induced by gamma-rays were rejoined within 8 hours of post-irradiation incubation, only 35 to 45% of PCC breaks induced by heavy ions were rejoined. These results suggest that there is a qualitative difference in the initial chromosome damage caused by heavy ions and gamma rays. | |||||
書誌情報 |
Journal of radiation research 巻 33, 号 Supple_1, p. 87-94, 発行日 1992-03 |
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出版者 | ||||||
出版者 | 日本放射線影響学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 04493060 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00705792 | |||||
権利 | ||||||
権利情報 | 日本放射線影響学会 | |||||
権利 | ||||||
権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of radiation research. 1992, 33(Supple_1), p.87-94 |