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Quantification of damage due to low-dose radiation exposure in mice: construction and application of a biodosimetric model using mRNA indicators in circulating white blood cells
https://repo.qst.go.jp/records/47417
https://repo.qst.go.jp/records/4741792963d99-66c5-4e66-80b2-822ca8fdcf1a
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-05-18 | |||||
タイトル | ||||||
タイトル | Quantification of damage due to low-dose radiation exposure in mice: construction and application of a biodosimetric model using mRNA indicators in circulating white blood cells | |||||
言語 | ||||||
言語 | eng | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Ishihara, Hiroshi
× Ishihara, Hiroshi× Tanaka, Izumi× Yakumaru, Haruko× Tanaka, Mika× Yokochi, Kazuko× Fukutsu, Kumiko× Tajima, Katsushi× Nishimura, Mayumi× Shimada, Yoshiya× Akashi, Makoto× 石原 弘× 田中 泉× 薬丸 晴子× 田中 美香× 横地 和子× 福津 久美子× 田嶋 克史× 西村 まゆみ× 島田 義也× 明石 真言 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Biodosimetry, the measurement of radiation damage in a biologic sample, is a reliable tool for increasing the accuracy of dose estimation. Although established chromosome analyses are suitable for estimating the absorbed dose after high-dose irradiation, biodosimetric methodology to measure damage following low-dose exposure is underdeveloped. RNA analysis of circulating blood containing radiation-sensitive cells is a candidate biodosimetry method. Here we quantified RNA from a small amount of blood isolated from mice following low-dose body irradiation (<0.5 Gy) aimed at developing biodosimetric tools for situations that are difficult to study in humans. By focusing on radiation-sensitive undifferentiated cells in the blood based on Myc RNA expression, we quantified the relative levels of RNA for DNA damage-induced (DDI) genes, such as Bax, Bbc3 and Cdkn1a. The RNA ratios of DDI genes/Myc in the blood increased in a dose-dependent manner 4 h after whole-body irradiation at doses ranging from 0.1 to 0.5 Gy (air-kerma) of X-rays, regardless of whether the mice were in an active or resting state. The RNA ratios were significantly increased after 0.014 Gy (air-kerma) of single X-ray irradiation. The RNA ratios were directly proportional to the absorbed doses in water ranging from 0.1 to 0.5 Gy, based on gamma-irradiation from 137Cs. Four hours after continuous irradiation with gamma-rays or by internal contamination with a beta-emitter, the increased RNA ratios resembled those following single irradiation. These findings indicate that the RNA status can be utilized as a biodosimetric tool to estimate low-dose radiation when focusing on undifferentiated cells in blood. | |||||
書誌情報 |
Journal of Radiation Research 巻 57, 号 1, p. 25-34, 発行日 2015-11 |
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出版者 | ||||||
出版者 | JRR Editorial Committee | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0449-3060 |