Search Results - "Onitake, K"

Partial formation of sperm dimorphism from spermatocytes of the cottoid fish, Hemilepidotus gilberti in cell culture by Hayakawa, Y, Takayama-Watanabe, E, Watanabe, A, Kobayashi, M, Munehara, H, Onitake, K

“…Polymorphism of sperm is considered to be significant for the reproductive strategy in some animal species. The phenomenon is thought to occur in the…”
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Ordered progress of spermiogenesis to the fertilizable sperm of the medaka fish, Oryzias latipes, in cell culture by Sasaki, Takahiro, Watanabe, Akihiko, Takayama‐Watanabe, Eriko, Suzuki, Makoto, Abe, Hiroyuki, Onitake, Kazuo

“…Spermiogenesis is significant for producing sperm with equipment for achieving fertilization. Although multiple events occur in a particular order during…”
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Identification of the sperm motility-initiating substance in the newt, Cynops pyrrhogaster, and its possible relationship with the acrosome reaction during internal fertilization by Watanabe, Toshihiko, Kubo, Hideo, Takeshima, Shinya, Nakagawa, Mami, Ohta, Manami, Kamimura, Saori, Takayama-Watanabe, Eriko, Watanabe, Akihiko, Onitake, Kazuo

“…Motility initiation is a key event during internal fertilization of female-stored sperm, although the underlying mechanisms remain unclear. In internally…”
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Changes in surface antigens of Hymenolepis nana during differentiation and maturation in mice by Ito, A, Onitake, K

“…The surface antigens of oncosphere, cysticercoid, adult scolex and adult strobila (other than scolex) of Hymenolepis nana differ critically from one another…”
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Blastoderm formation in the silkworm egg (Bombyx mori L.) by Takesue, S, Keino, H, Onitake, K

“…Embryogenesis in the egg of the silkworm, Bombyx mori , up to 24 h after oviposition was studied, by light microscopy with special reference to nuclear…”
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Tryptic disruption of sperm-binding site of sea urchin egg surface by Aketa, K, Onitake, K, Tsuzuki, H

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Antigenicity on sperm surface of the rainbow trout Salmo gairdneri by Watanabe, T, Iwamatsu, T, Ohta, T, Onitake, K, Saxena, O P, Tadano, M

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The urodele egg-coat as the apparatus adapted for the internal fertilization by Watanabe, Akihiko, Onitake, Kazuo

“…Fertilization is a significant event for reproducing offspring. It is achieved under a species-specific environment, which influences the conditions to assure…”
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Characterization of the sperm-binding protein from sea urchin egg surface by Aketa, K, Tsuzuki, H, Onitake, K

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Induction and inhibition of in vitro oocyte maturation and production of steroids in fish follicles by forskolin by Iwamatsu, T, Takahashi, S Y, Sakai, N, Nagahama, Y, Onitake, K

“…The effects of forskolin (FK) on in vitro oocyte maturation and production of steroids were examined in Oryzias latipes. When oocytes within preovulatory…”
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CpZPC, a newt ZPC molecule, localizes to the inner surface of the egg envelope by Makabe-Kobayashi, Youko, Kudaira, Etsuko, Watanabe, Akihiko, Onitake, Kazuo

“…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…”
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Characteristics of sperm motility induced on the egg-jelly in the internal fertilization of the newt, Cynops pyrrhogaster by Watanabe, Toshihiko, Itoh, Tokuko, Watanabe, Akihiko, Onitake, Kazuo

“…Most urodeles undergo internal fertilization and sperm are directly inseminated onto the surface of egg-jelly. Feature of sperm motility induced on the…”
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Requirement of protamine for maintaining nuclear condensation of medaka (Oryzias latipes) spermatozoa shed into water but not for promoting nuclear condensation during spermatogenesis by Shimizu, Y, Mita, K, Tamura, M, Onitake, K, Yamashita, M

“…Protamine is an arginine-rich basic protein found in the sperm nuclei of many vertebrates, but its actual roles in spermatozoa remain to be elucidated. In this…”
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The activity for the induction of the sperm acrosome reaction localises in the outer layers and exists in the high-molecular-weight components of the egg-jelly of the newt, Cynops pyrrhogaster by Sasaki, Takayuki, Kamimura, Saori, Takai, Hiroyuki, Watanabe, Akihiko, Onitake, Kazuo

“…Localisation of the acrosome reaction inducing activity in egg-jelly was examined in the newt, Cynops pyrrhogaster. The jelly has six layers: the J0, J1, J2,…”
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Egg transport in the coelom of the newt cynops pyrrhogaster. I. The ovulated egg is transported to the ostium by the ciliary movement of coelomic epithelial cells by Yamahama, Yumi, Onitake, Kazuo

“…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…”
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Establishment of in vitro spermatogenesis from spermatocytes in the medaka, Oryzias latipes by Saiki, Atsusi, Tamura, Masaru, Matsumoto, Masami, Katowgi, Jun, Watanabe, Akihiko, Onitake, Kazuo

“…Spermatocytes of the teleost, Oryzias latipes, at meiotic prophase were cultured without contact with somatic cells. They began to divide, progressing through…”
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Sperm surface heparin/heparan sulfate is responsible for sperm binding to the uterine envelope in the newt, Cynops pyrrhogaster by Nakai, Satoshi, Watanabe, Akihiko, Onitake, Kazuo

“…The sperm‐binding properties of egg envelopes are investigated in the newt, Cynops pyrrhogaster. Sperm binding was only seen on the uterine envelope when…”
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Significance of egg-jelly substances in the internal fertilization of the newt, Cynops pyrrhogaster by Onitake, Kazuo, Takai, Hiroyuki, Ukita, Masahiko, Mizuno, Jun-Ichi, Sasaki, Takayuki, Watanabe, Akihiko

“…Japanese newt, Cynops pyrrhogaster, undergoes internal fertilization as do most urodeles. In this study, we focused on the roles of egg-jelly in fertilization…”
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Initiation of sperm motility in the newt, Cynops pyrrhogaster, is induced by a heat-stable component of egg-jelly by Mizuno, J, Watanabe, A, Onitake, K

“…Sperm motility in amphibians is thought to be initiated by a decrease in environmental osmolarity. However, fertilisation in the newt, Cynops pyrrhogaster, is…”
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Cloning of Protamine cDNA of the Medaka (Oryzias latipes) and Its Expression during Spermatogenesis by Tamura, Masaru, Yamamoto, Hiroaki, Onitake, Kazuo

“…Protamines or sperm specific basic proteins are highly basic low molecular weight proteins that substitute histones in the chromatin of sperm during…”
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