Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Kazuo Onitake"'
Autor:
Kazuo Onitake, Saori Kamimura, Mami Nakagawa, Eriko Takayama-Watanabe, Manami Ohta, Hideo Kubo, Akihiko Watanabe, Toshihiko Watanabe, Shinya Takeshima
Publikováno v:
The International Journal of Developmental Biology. 54:591-597
Motility initiation is a key event during internal fertilization of female-stored sperm, although the underlying mechanisms remain unclear. In internally fertilizing urodeles, quiescent sperm initiate motility on the surface of the egg-jelly, a thick
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3a9303c5a546e3d71a3d8018b61d6a3
https://doi.org/10.1387/ijdb.092894tw
https://doi.org/10.1387/ijdb.092894tw
Autor:
Yuko Iwasaki, Kazuo Onitake, Eriko Takayama-Watanabe, Keiko Ohkawa, Hisato Sadakata, Akihiko Watanabe, Akiko Kashiwadate
Publikováno v:
Development, Growth & Differentiation. 51:521-532
Seasonal change in spermatogenesis was examined in the restricted spermatogonium-type testes of a teleost, Oryzias latipes. Histological observation revealed that the number of each stage of germ cells during most of the non-reproductive season, from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a622b6fdbe31b850d756b4ade21646e
https://doi.org/10.1111/j.1440-169x.2009.01114.x
https://doi.org/10.1111/j.1440-169x.2009.01114.x
Autor:
Akihiko Watanabe, Keiko Fukutomi, Eriko Takayama-Watanabe, Manami Ohta, Hideo Kubo, Kazuo Onitake
Publikováno v:
Molecular Reproduction and Development. 76:399-406
Our previous studies have shown that the acrosome reaction (AR) occurs in egg-jelly of the Japanese newt, Cynops pyrrhogaster. This is analogous to the substances of echinoderms but distinct from those of many other vertebrates derived from the egg e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81b481f5493dc3e1406e8164e7c58e44
https://doi.org/10.1002/mrd.20959
https://doi.org/10.1002/mrd.20959
Autor:
Takayuki Sasaki, Akihiko Watanabe, Hiroyuki Takai, Wataru Hiyoshi, Eriko Takayama-Watanabe, Kazuo Onitake
Publikováno v:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. :301-311
The acrosome reaction of newt sperm is induced at the surface of egg jelly and the acrosome-reacted sperm acquire the ability to bind to the vitelline envelope. However, because the substance that induces the acrosome reaction has not been identified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f49daf522e522fb40f4205e5f2066d75
https://doi.org/10.1002/jez.376
https://doi.org/10.1002/jez.376
Publikováno v:
Journal of Experimental Zoology Part A: Comparative Experimental Biology. :1010-1017
The significance of egg-jelly layers in internal fertilization was evaluated in the newt, Cynops pyrrhogaster. In this species, six egg-jelly layers, J1, J2, J3, J4, J5 and the outermost J6 layers, are accumulated on the surface of the fertilizable e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::066f320dd37c111e512a757d8ab8b22f
https://doi.org/10.1002/jez.a.295
https://doi.org/10.1002/jez.a.295
Autor:
Eriko Takayama-Watanabe, Hiroyuki Abe, Kazuo Onitake, Makoto Suzuki, Akihiko Watanabe, Takahiro Sasaki
Publikováno v:
Development, Growth and Differentiation. 47:87-97
Spermiogenesis is significant for producing sperm with equipment for achieving fertilization. Although multiple events occur in a particular order during spermiogenesis, it is unclear how the timing of those events is controlled. In the present study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41767a06174e640cea7c162ca2ede8d8
https://doi.org/10.1111/j.1440-169x.2005.00785.x
https://doi.org/10.1111/j.1440-169x.2005.00785.x
Autor:
Kazuo Onitake
Publikováno v:
JOURNAL OF THE JAPANESE ASSOCIATION OF RURAL MEDICINE. 54:625-639
In Japan the consumers' trust in the food safety administration and social system was crumbled miserably. What with the occurrence of BSE cases and the revelation of a series of coverup scandals, what a food labelling system ought to be also emerged
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ca66887ea1b10865b1ccf2a7d017953
https://doi.org/10.2185/jjrm.54.625
https://doi.org/10.2185/jjrm.54.625
Publikováno v:
The International Journal of Developmental Biology. 47:41-50
Zona pellucida-3 is an essential molecule for the binding of sperm to the egg envelope and for induction of the acrosome reaction in mice. Its homologous molecules, ZPCs, have been widely identified in the eggs of many vertebrates, except for urodele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49a5af2f240ea43bb17fd72ad8cceb2a
https://doi.org/10.1387/ijdb15
https://doi.org/10.1387/ijdb15
Publikováno v:
Journal of Experimental Zoology. 292:314-322
Egg-jelly is composed of a network of fibrous components and contains substances regulating the sperm-egg interaction. Many studies on the latter have been conducted, whereas the role of the egg-jelly structure in fertilization has not yet been fully
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::913358ed25159b079960155f9b194edd
https://doi.org/10.1002/jez.10019
https://doi.org/10.1002/jez.10019
Autor:
Kazuo Onitake, Yumi Yamahama
Publikováno v:
ZOOLOGICAL SCIENCE. 19(8):899-906
We investigated the mechanism of egg transport in the newt not only by inserting various conditioned eggs into the recipient's body but also by placing them on the coelomic epithelia of the opened body cavity in the adult female newt. Most of the ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecb069a5a84a86324e902b41ef8879fa
http://hdl.handle.net/10271/845
http://hdl.handle.net/10271/845