Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Miyako S Hamaguchi"'
Autor:
Setsuko K Satoh, Akifumi Tsuchi, Ryohei Satoh, Hiromi Miyoshi, Miyako S Hamaguchi, Yukihisa Hamaguchi
Publikováno v:
PLoS ONE, Vol 8, Iss 11, p e79389 (2013)
Meiotic maturation is essential for the reproduction procedure of many animals. During this process an oocyte produces a large egg cell and tiny polar bodies by highly asymmetric division. In this study, to fully understand the sophisticated spatiote
Externí odkaz:
https://doaj.org/article/feb00a4c3fec4e10b2792a6e07128f26
Publikováno v:
Cell Structure and Function. 26:627-631
In order to understand the mechanism of unequal division, polar body formation was investigated using the oocytes of the starfish, Asterina pectinifera. Cortical actin filaments were quantitatively measured after staining the maturing oocytes with fl
Publikováno v:
Zoological Science. 15:537-540
The effect of slightly acidic intracellular pH (pHi) on the development of the sea urchin, Hemicentrotus pulcherrimus was investigated. At first cleavage, the fertilized eggs were treated with artificial sea water containing sodium acetate (Ac-pHSW)
Publikováno v:
Cell Motility and the Cytoskeleton. 37:263-270
The effect of change in intracellular pH (pHi) on mitosis was investigated in the sand dollar egg. The pHi in the fertilized egg of Scaphechinus mirabilis and Clypeaster japonicus, which was 7.34 and 7.31, respectively, changed by means of treating t
Publikováno v:
Cell Structure and Function. 22:387-398
To establish a method of pHi regulation and to understand the pH regulation mechanism in the cell, we investigated the pHi response of unfertilized or fertilized eggs of sea urchin, applying sea water containing both weak permeant acid, acetic acid a
Autor:
Hiromi Miyoshi, Akifumi Tsuchi, Miyako S. Hamaguchi, Yukihisa Hamaguchi, Ryohei Satoh, Setsuko K. Satoh
Publikováno v:
PLoS ONE
PLoS ONE, Vol 8, Iss 11, p e79389 (2013)
PLoS ONE, Vol 8, Iss 11, p e79389 (2013)
Meiotic maturation is essential for the reproduction procedure of many animals. During this process an oocyte produces a large egg cell and tiny polar bodies by highly asymmetric division. In this study, to fully understand the sophisticated spatiote
Autor:
Miyako S. Hamaguchi, Ken Nakada, Hideo Mohri, Hideki Shirakawa, Shunichi Miyazaki, Kiyoshi Sano, Yukihisa Hamaguchi
Publikováno v:
Zygote. 2:149-157
SummaryMagnesium ions as well as calcium ions are required for successful fertilisation in sea urchins. In the absence of Mg2+spermatozoa attached to the egg plasma membrane, their acrosomal processes passing through the vitelline envelope, but could
Publikováno v:
Cell Structure and Function. 15:159-162
An increase in intracellular Ca2+ concentration ([Ca2+]) and morphological were simultaneously observed by epifluorescence and differential interference contrast (DIC) microscopy during fertilization of the sand dollar, Clypeaster japonicus. [Ca2+],
Publikováno v:
Development, growthdifferentiation. 43(4)
In the fertilization of sea urchin eggs, intracellular [Ca2+] (Cai) increases transiently and intracellular pH (pHi) elevates accordingly. Unlinking these two activating factors experimentally, the requirement of the increase in pHi for sperm aster f
Publikováno v:
Scopus-Elsevier
The rotational movement of a spermatozoon around its longitudinal axis was investigated by two methods: by observing a spermatozoon attached vertically to a coverslip by the tip of its head, and by observing a spermatozoon freely swimming in a medium