タイトル(別表記) Cytoskeletal elements in an acoelomorph worm, Praesagittifera naikaiensis
フルテキストURL poalas_034_021_180706.pdf
著者 池田 理佐| 藤原 稚穂| 濱田 麻友子| 坂本 竜哉| 齋藤 昇| 安藤 元紀|
抄録 Acoel flatworms can move in a variety of ways such as muscular and ciliary movements via cytoskeletal elements and their neural regulations. However, those locomotive mechanisms have not yet been fully elucidated. In this study, we examined the distribution of cytoskeletal elements including filamentous actin (F-actin) and tubulin, and the neuroanatomical organization in an acoelomorph worm, Praesagittifera naikaiensis (P. naikaiensis). Video microscopy revealed the elongation/contraction and the bending/rotation processes, and the ciliary gliding movement of P. naikaiensis. Histochemical and morphological analysis demonstrated that F-actin networks of inner longitudinal and outer circular muscle fibers were positioned along the entire surface of the body, and that the average distance between the circular muscle fibers in the contracted organism was decreased in the anterior region compared with that in the elongated organism. Electron microscopy showed dense bodies on the muscle cells of P. naikaiensis, which indicates that those muscle cells have the appearance of vertebrate smooth muscle cells. Immunohistochemical analysis revealed that -tubulin-positive signals on the ciliary microtubules had close contact with the F-actin network, and that neurite bundles labelled with anti dSap47 antibody as a neuronal marker run along the anterior-posterior body axis. These results indicate that the well-organized cytoskeletal elements and their neural control systems are preserved in P. naikaiensis, and that their mechanisms involved in those regulation systems are similar to those vertebrate systems. Further studies are needed to clarify the physiological mechanisms underlying the muscular and ciliary movements in P. naikaiensis.
出版物タイトル 岡山実験動物研究会報
発行日 2018-04
34巻
開始ページ 21
終了ページ 27
言語 Japanese
論文のバージョン publisher
NAID 120006469118
タイトル(別表記) Structure and function of tegmentum vasculosum in avian cochlea
フルテキストURL poalas_033_026_030.pdf
著者 池田 理佐| 乙野 剛史| 池田 直矢| 齋藤 昇| 安藤 元紀|
抄録 In spite of the importance of endocochlear DC potential (EP) and the K+-rich endolymph for the avian cochlea, the structure and function of the tegmentum vasculosum (TV) has not yet been fully elucidated, compared with those of the stria vascularis in the mammalian cochlea. In this study, we examined structural analysis of the epithelial cells, gene expressions of Na+-K+-ATPase (Atp1A1) and Kir4.1 (Kcnj10), and protein localizations of Na+-K+-ATPase and Kir4.1, in the TV. Tight junctional structures were observed between epithelial dark cells and light cells in the TV. Both Atp1a1 and Kcnj10 genes were detected in the TV. In addition, immunopositive signals for both Na+-K+-ATPase and Kir4.1 were recognized in the TV. These results indicate that Na+-K+-ATPase and Kir4.1 play roles in maintaining the EP and high K+ concentration of the endolymph. Further studies are needed to clarify the physiological functions of the TV. This is the first report which demonstrates that gene and protein expression data contribute to the avian inner ear homeostasis.
出版物タイトル 岡山実験動物研究会報
発行日 2017-04
33巻
開始ページ 26
終了ページ 30
言語 Japanese
論文のバージョン publisher
著者 山地 真裕美| 井上 理佐| 枝松 緑| 安藤 元紀|
発行日 2015-04
出版物タイトル 岡山実験動物研究会報
31巻
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/15108
タイトル(別表記) The New Type of Lectures on the Development of Science Teaching Plans and Materials Tried in the Department ofEducation
フルテキストURL 009_097_102.pdf
著者 稲田 佳彦| 入江 泉| 跡部 紘三| 安藤 元紀| 石川 彰彦| 宇野 康司| 小倉 久和| 柿原 聖治| 加藤 内蔵進| 喜多 雅一| 田中 賢二|
抄録 岡山大学教育学部の理科教育講座に所属する3年生を対象に,理科教材・授業案開発を指向した新しい講義を始めたのでその報告を行う。本講義では,近隣の小,中学校や公民館,科学館等の協力も得て実践の場を確保し,開発した教材や授業案を実践することで生きた教材開発の訓練を行なうことを目指している。教科内容学担当教員と教科教育学担当教員の協働を模索すると同時に,大学教員の教科内容の専門知識や技量を教材や授業案に有効に活用できる講義を意識した。
抄録(別表記) This is a report of the new type of lectures on the development of teaching plans and teaching materials attempted in the science class for 3rd grade students in the Department of Education Okayama Universlty. The students practiced the development of teaching plans and teaching materials, and they conducted their activities not only at university but also at the neighboring schools, the public hall, the science museum etc. We expected the development of further collaboration in the academic staffs in the science education course, and the science abilities will be helpful for the development of teaching plans and teaching materials.
キーワード 学部講義 教材授業案開発 (Development of Teaching Plans and Teaching Materials) 授業実践 (Education practice) 理科教育 (Science Education Class) 新カリキュラム (New Curriculum)
出版物タイトル 岡山大学教育実践総合センター紀要
発行日 2009-03-10
9巻
1号
開始ページ 97
終了ページ 102
ISSN 1346-3705
言語 Japanese
論文のバージョン publisher
NAID 120002307783
JaLCDOI 10.18926/14367
タイトル(別表記) The Lectures on the Development of Teaching Plans and Teaching Materials Tried in the Science Education Class in Master's Course, Okayama University
フルテキストURL 007_001_007.pdf
著者 稲田 佳彦| 柿原 聖治| 喜多 雅一| 山下 信彦| 石川 彰彦| 小倉 久和| 安藤 元紀| 草地 功| 加藤 内蔵進| 吉岡 勉| 河田 有紀| 平山 元士| 橋本 誠治| 赤崎 哲也| 東 伸彦| 別役 昭夫|
抄録 岡山大学大学院教育学研究科の理科教育専攻の講義として、教材開発・授業案開発をテーマとした新しい講義を試みたのでその報告を行う。本講義は、理科教育講座に所属する大学院生、理科教育講座の大学教員、附属学校の理科関係の教諭が三者協働で進めることが特徴である。課題設定、教材開発を含めた実践準備および実践を院生チームを組み遂行させ、さらに経験や専門性の異なる人材と論議を重ねて活動を進めることを通じ、将来、協働で学校現場の課題提案・解決を行うことのできる能力を養うことを目標とした。
抄録(別表記) This is a report of the new type of lectures on the development of teaching plans and teaching materials attempted in the science class in the Master's Course, Okayama University. The lectures were conducted in collaboration of the graduate students and the academic staffs in the science education course, and the science teachers of the attached school of Okayama University. The graduate students were grouped into two teams of five or six people, assigned to decide on themes, prepare and practice the development of teaching plans and teaching materials. They conducted their activities discussing problems with people of different experience and specialty, thus developing the ability to jointly propose and solve problems at schools in future.
キーワード 大学院講義 (Science Education Class in the Master's Course) 附属学校 (Attached School) 授業実践 (education practice) 教材開発 (Development of Teaching Materials) 授業案開発 (Development of Teaching Plans)
出版物タイトル 岡山大学教育実践総合センター紀要
発行日 2007-03-10
7巻
1号
開始ページ 1
終了ページ 7
ISSN 1346-3705
言語 Japanese
論文のバージョン publisher
NAID 120002308464