Tokyo Metropolitan Institute of Gerontology
Tokyo Metropolitan Institute of Gerontology
Hiroshima University Graduate School of Science
Hiroshima University Graduate School of Science
Hiroshima University Graduate School of Science
Shibaura Institute of Technology Faculty of Engineering
Tokyo Metropolitan Institute of Medical Science Department of Medical Biology
Kagoshima University Faculty of Science
Sapporo Medical University School of Health Sciences
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
宇宙利用シンポジウム 第23回 平成18年度
雑誌名(英)
Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium
ページ
314 - 317
発行年
2007-03
抄録（英）
To investigate the effects of hypergravity on the hypothalamus of amphibians, we raised frogs, Xenopus laevis under hypergravity environment (2 and 5 G) environments from hatch to the beginning of metamorphosis (St 57) and completion of metamorphosis (St 66). The frogs developed at 2 G and 5 G, but they were smaller than those raised at 1 G. In the hypergravity-treated hypothalamus, the total volume was reduced. The length of median eminence of treated frogs was also reduced. These morphological dwarves of the hypothalamus and median eminence indicate that hypergravity alters their endocrinological functions. These results suggest that gravity different from the terrestrial environment causes dysfunction and hypofunction in the endocrine systems, and that the organisms may change their inherent life cycles under such conditions.
アフリカツメガエルの視床下部-脳下垂体系に対する過重力の影響
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