『徳島大学 教育・研究者情報データベース (EDB)』---[学外] /
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EID=95319EID:95319, Map:0, LastModified:2013年11月7日(木) 15:19:47, Operator:[三木 ちひろ], Avail:TRUE, Censor:0, Owner:[[学科長]/[徳島大学.医学部.保健学科]], Read:継承, Write:継承, Delete:継承.
種別 (必須): 学術論文 (審査論文) [継承]
言語 (必須): 英語 [継承]
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審査 (推奨): Peer Review [継承]
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学究種別 (推奨):
組織 (推奨): 1.徳島大学.医学部.保健学科.放射線技術科学専攻.医用放射線科学講座 [継承]
著者 (必須): 1.檜枝 光太郎
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2. (英) Hirono Taisuke (日) (読)
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3. (英) Azami Akira (日) (読)
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4.鈴木 雅雄
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5.古澤 佳也 ([独立行政法人 放射線医学総合研究所])
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6.前澤 博
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7.宇佐美 徳子 ([政府.文部省.高エネルギー加速器研究機構])
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8.横谷 明徳 (原子力研究所)
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9.小林 克己 ([独立行政法人 物質·材料研究機構])
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学籍番号 (推奨):
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題名 (必須): (英) Single- and double-strand breaks in pBR322 plasmid DNA by monochromatic X-rays on and off thr K-absorption peak of phosphorus.  (日)    [継承]
副題 (任意):
要約 (任意): (英) Using a synchrotron irradiation system pBR322 plasmid DNA was irradiated under vacuum by monochromatic X-rays having five specific photon energies (2.147, 2.153, 2.159, 2.168 and 2.199 keV) both on and off the K-absorption peak (2.153 keV) of phosphorus. The single- and double-strand breaks (ssb and dsb) were measured as conversions of the closed circular form of DNA (form I) to open circular (form II) and linear (form III) forms respectively. Exposures to induce one strand break per molecule were lowest at the peak (2.153 keV), and highest at 2.147 keV; the ratios were 2.7 for ssb and 3.0 for dsb. The exposures for dsb were 21-26 times higher than those for ssb. When the exposures were converted to absorbed doses in grays the absorbed doses per ssb were almost independent of photon energy. This result indicates that a certain absorbed dose was necessary to induce a ssb, regardless of whether photons were absorbed by the K-shell of phosphorus or by other shells, or by other atoms. However, the absorbed dose per dsb at 2.147 keV was 1.17 times higher than that averaged over four X-ray energies above 2-153 keV, indicating that the K-shell absorption, and the subsequent Auger event, efficiently induce dsb. The results are also discussed concerning the number of photo-absorptions of the constituent atoms per DNA strand break.  (日)    [継承]
キーワード (推奨): 1. (英) Animals (日) (読) [継承]
2. (英) Cattle (日) (読) [継承]
3.物理化学 (physical chemistry) [継承]
4. (英) DNA Damage (日) (読) [継承]
5. (英) DNA, Bacterial (日) (読) [継承]
6. (英) DNA, Single-Stranded (日) (読) [継承]
7. (英) Dose-Response Relationship, Radiation (日) (読) [継承]
8.リン (phosphorus) [継承]
9. (英) Physicochemical Phenomena (日) (読) [継承]
10. (英) Plasmids (日) (読) [継承]
11. (英) Spectrometry, X-Ray Emission (日) (読) [継承]
12. (英) X-Rays (日) (読) [継承]
発行所 (推奨): Taylor & Francis [継承]
誌名 (必須): International Journal of Radiation Biology ([Taylor & Francis])
(pISSN: 0955-3002, eISSN: 1362-3095)

ISSN (任意): 0955-3002
ISSN: 0955-3002 (pISSN: 0955-3002, eISSN: 1362-3095)
Title: International journal of radiation biology
Title(ISO): Int J Radiat Biol
Publisher: Taylor & Francis
 (NLM Catalog  (Scopus  (CrossRef (Scopus information is found. [need login])
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(必須): 437 445 [継承]
都市 (任意): ロンドン (London/[連合王国]) [継承]
年月日 (必須): 西暦 1996年 10月 末日 (平成 8年 10月 末日) [継承]
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DOI (任意):
PMID (任意): 8862455    (→Scopusで検索) [継承]
NAID (任意): 30016570038 [継承]
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備考 (任意): 1.(英) Article.Affiliation: Biophysics Laboratory, Faculty of Science, Rikkyo (St. Paul's) University, Tokyo, Japan.  (日)    [継承]
2.(英) Article.PublicationTypeList.PublicationType: Comparative Study  (日)    [継承]
3.(英) Article.PublicationTypeList.PublicationType: Journal Article  (日)    [継承]
4.(英) Article.PublicationTypeList.PublicationType: Research Support, Non-U.S. Gov't  (日)    [継承]

標準的な表示

和文冊子 ● Kotaro Hieda, Taisuke Hirono, Akira Azami, Masao Suzuki, Yoshiya Furusawa, Hiroshi Maezawa, Noriko Usami, Akinari Yokoya and Katsumi Kobayashi : Single- and double-strand breaks in pBR322 plasmid DNA by monochromatic X-rays on and off thr K-absorption peak of phosphorus., International Journal of Radiation Biology, Vol.70, No.4, 437-445, 1996.
欧文冊子 ● Kotaro Hieda, Taisuke Hirono, Akira Azami, Masao Suzuki, Yoshiya Furusawa, Hiroshi Maezawa, Noriko Usami, Akinari Yokoya and Katsumi Kobayashi : Single- and double-strand breaks in pBR322 plasmid DNA by monochromatic X-rays on and off thr K-absorption peak of phosphorus., International Journal of Radiation Biology, Vol.70, No.4, 437-445, 1996.

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