@inproceedings{oai:jaxa.repo.nii.ac.jp:00013588, author = {新海, 正 and 松田, 道子 and 柏木, 昭彦 and 柏木, 啓子 and 古野, 伸明 and 浦野, 四郎 and 久保, 英夫 and 板井, 雅夫 and 藤井, 博匡 and 山下, 雅道 and Shinkai, Tadashi and Matsuda, Michiko and Kashiwagi, Akihiko and Kashiwagi, Keiko and Furuno, Nobuaki and Urano, Shiro and Kubo, Hideo and Itai, Masao and Fujii, Hirotada and Yamashita, Masamichi}, book = {宇宙利用シンポジウム 第23回 平成18年度, Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium}, month = {Mar}, note = {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., 資料番号: AA0063349090}, pages = {314--317}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)}, title = {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}, year = {2007} }