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
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
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
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
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
Autor:
Satoshi Takaya, Atsushi Hasegawa, Kentaro Yamaguchi, Tomoaki Imamura, Kazuo Onitake, Manabu Akahane, Yoshiyuki Kanagawa, Shigeki Yamamoto
Publikováno v:
Foodborne pathogens and disease. 11(12)
The awareness of food terrorism has increased following the September 11, 2001 terrorist attacks in New York City, United States, and many measures and policies dealing with this issue have been established worldwide. Suspected deliberate food-poison
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
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
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
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