@inproceedings{oai:jaxa.repo.nii.ac.jp:00013445, author = {奥野, 誠 and 石島, 純夫 and 稲葉, 一男 and 上村, 慎治 and 久保田, 俊一郎 and 清水, 強 and 堂前, 雅史 and 中村, 健一 and 浜口, 幸久 and 藤ノ木, 政勝 and Okuno, Makoto and Ishijima, Sumio and Inaba, Kazuo and Kamimura, Shinji and Kubota, Shunichiro and Shimizu, Tsuyoshi and Domae, Masashi and Nakamura, Kenichi and Hamaguchi, Yukihisa and Fujinoki, Masakatsu}, book = {宇宙利用シンポジウム 第24回 平成19年度, Space Utilization Research: Proceedings of the Twenty-fourth Space Utilization Symposium}, month = {Mar}, note = {We organized a working group for studying the reproduction and continuity of life under the space environment. The aim of our project is to get deep insight into the effect of space environment from various aspects, such as basic life science, applied reproductive biology, and medical sciences. This year, our group has discussed about the following research projects. First, the effects of gravity on behavior of mouse were examined. When mouse was exposed to 3G serious effects were observed in amount of food consumption, feeding period and posture resulting in loss of weight. Second, we demonstrated progesterone and melatonin both accelerated hyperactivation of sperm motility. Since hyper gravity modifies various kinds of reproduction relating hormones it could be assumed that hyper gravity might affect reproduction via modification of sperm hyperactivation. Third, apoptosis occurred during spermatogenesis especially in spermatocyte stage. Space environment might affect the function of sperm selection by modifying the apoptosis. In addition we discussed about diffusion of ATP (Adenosine Triphosphate) in sperm flagella and human sexuality. We move ahead on these projects to space experiment., 資料番号: AA0063706069}, pages = {259--261}, 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 = {宇宙環境下における生殖・継世代研究の展開}, year = {2008} }