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Nutrition status and radiation-induced cancer in mice
https://repo.qst.go.jp/records/53261
https://repo.qst.go.jp/records/53261dbd37d93-7d6f-46eb-9642-2906f3c82b84
Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2003-11-26 | |||||
タイトル | ||||||
タイトル | Nutrition status and radiation-induced cancer in mice | |||||
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_5794 | |||||
資源タイプ | conference paper | |||||
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 |
Yoshida, Kazuko
× Yoshida, Kazuko× Hirabayashi, Yoko× Sado, Toshihiko× Inoue, Tohoru× 吉田 和子× 平林 容子× 佐渡 敏彦× 井上 達 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Dietary restriction, especially caloric restriction (CR), is a major carcinogenic modifier during experimental carcinogenesis. We attempted to examine the effects of CR on radiation-induced myeloid leukemia (MyL). The spontaneous incidence of MyL in C3H/He mice is 1.1%, and the incidence increases to 21.6% by X-ray irradiation. However, the incidence was decreased in the CR groups; it was 7.9% in RA (life-span restricted diet from the age of 6 weeks), 10.7% in RB (restricted diet after irradiation), 16.2% in RC (restricted from 6weeks old until irradiation at 10 weeks old). The differences between both the RA and RB groups and the non-restricted group were statistically significant. The significantly fewer hematopoietic stem cells (HSC), potential target cells for radiation leukemia in the RA and RC at the time of radiation exposure, and the smaller cycling fraction of HSC under CR in the femur of restricted mice (26+-4.5%) than in the non-restricted group (44+-20%), were responsible for this underlying mechanism. CR contributes to the incidence reduction of leukemia at the initiation stage of leukemogenesis and, more significantly, to the reduction of MyL during the promotion stage of radiation leukemogenesis. | |||||
書誌情報 |
Radiation and Homeostasis : Proceedings of the International Symposium of Radiation and Homeostasis, held in Kyoto, Japan, 13-16 July 2001(International Congress Series ; no. 1236) p. 455-458, 発行日 2002 |
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出版者 | ||||||
出版者 | Elsevier |