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Effects of Prenatal Irradiation with an Accelerated Heavy-Iron Beam on Postnatal Development in Rats: II.. Further Study on Neurophysiologic Alterations
https://repo.qst.go.jp/records/44883
https://repo.qst.go.jp/records/44883df820619-7971-4bd0-b81a-66195839b4b2
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-06-18 | |||||
| タイトル | ||||||
| タイトル | Effects of Prenatal Irradiation with an Accelerated Heavy-Iron Beam on Postnatal Development in Rats: II.. Further Study on Neurophysiologic Alterations | |||||
| 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 |
Bing, Wang
× Bing, Wang× Murakami, Masahiro× Eguchi-Kasai, Kiyomi× Nojima, Kumie× Shang, Yi× Tanaka, Kaoru× Watanabe, Keiko× Fujita, Kazuko× Moreno, Stephanie.G× Herve, Coffigny× Hayata, Isamu× 王 冰× 村上 正弘× 笠井 清美× 野島 久美恵× 尚 奕× 田中 薫× 渡辺 恵子× 藤田 和子× 早田 勇 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Organogenesis is a highly radiosensitive period, study of prenatal exposure to high LET heavy ion beams on postnatal development is important for clarifying the radiation risk in space and promoting the evidence-based mechanism research. The effects from heavy ion irradiations are not well studied as those for low LET radiations such as X-rays in this field, even the ground-based investigations remain to be addressed. Using the Heavy Ion Medical Accelerator in Chiba (HIMAC) and Wistar rats, postnatal neurophysiological development in offspring was investigated following exposure of pregnant rats to accelerated neon-ion beams with a LET value of about 30 keV/um at a dose range from 0.1 to 2.0Gy on the 15th day of gestation. The age for appearance of four physiologic markers and attainment of five neonatal reflexes, and gain in body weight were monitored. Male offspring were evaluated as young adults using two behavioral tests including open field and hole-board dipping tests. The effects of X-rays at 200 kVp measured for the same biological end points were studied for comparison. For most of the endpoints at early age, significant neurophysiological alteration was observed even in offspring receiving 0.1 Gy of accelerated neon ions but not X-rays. All offspring receiving 2.0 Gy of accelerated neon ions died prior to weaning. Offspring prenatally irradiated with neon ions generally showed higher incidences of prenatal death, increased preweaning mortality, markedly delayed accomplishment in physiological markers and reflexes, significantly lower body weight and reduced ratios of main organ weight to body weight, and altered behavior compared to those exposed to X-rays at doses of 0.1 to 1.5 Gy. These findings indicate that irradiations with neon ions at 0.1 to 1.5 Gy on day 15 of gestation caused varied developmental alterations in offspring, and efficient dose leading to the detrimental effects seemed to be lower than that of X-rays. |
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| 書誌情報 |
Advances in Space Research 巻 39, 号 6, p. 994-1003, 発行日 2007-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0273-1177 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.asr.2006.11.011 | |||||
