Click here to close
Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly.
We suggest using a current version of Chrome,
FireFox, or Safari.
Ion currents and membrane domains in the cleaving Xenopus egg.
Kline D
,
Robinson KR
,
Nuccitelli R
.
???displayArticle.abstract???
We used an extracellular vibrating probe to measure ion currents through the cleaving Xenopus laevis egg. Measurements indicate sharp membrane heterogeneities. Current leaves the first cleavage furrow after new, unpigmented membrane is inserted. This outward current may be carried by K+ efflux. No direct involvement of the Na+,K+-ATPase in the generation of this outward current is detected at first cleavage. Inward current enters the old, pigmented membrane; however, it does not enter uniformly. The inward current is largest at the old membrane bordering the new membrane. This suggests a heterogeneous ion channel distribution within the old membrane. Experiments suggest that the inward current may be carried by Na+ influx, Ca2+ influx, and Cl- efflux. No steady currents were detected during grey crescent formation, the surface contraction waves preceding cleavage, or with groove formation at the beginning of cleavage.
Armstrong,
Interaction of barium ions with potassium channels in squid giant axons.
1980, Pubmed
Armstrong,
Interaction of barium ions with potassium channels in squid giant axons.
1980,
Pubmed
Benos,
Ouabain binding to preimplantation rabbit blastocysts.
1981,
Pubmed
Bluemink,
Freeze-fracture electron microscopy of preexisting and nascent cell membrane in cleaving eggs of Xenopus laevis.
1976,
Pubmed
,
Xenbase
Bluemink,
New membrane formation during cytokinesis in normal and cytochalasin B-treated eggs of Xenopus laevis. I. Electron microscope observations.
1973,
Pubmed
,
Xenbase
Cabantchik,
Membrane proteins related to anion permeability of human red blood cells. I. Localization of disulfonic stilbene binding sites in proteins involved in permeation.
1974,
Pubmed
de Laat,
New membrane formation during cytokinesis in normal and cytochalasin B-treated eggs of Xenopus laevis. II. Electrophysiological observations.
1974,
Pubmed
,
Xenbase
de Laat,
Intracellular ionic distribution, cell membrane permeability and membrane potential of the Xenopus egg during first cleavage.
1974,
Pubmed
,
Xenbase
Denis-Donini,
Morphological changes of the surface of the eggs of Xenopus laevis in the course of development. 2. Cytokinesis and early cleavage.
1976,
Pubmed
,
Xenbase
DiCaprio,
On the mechanism of electrical coupling between cells of early Xenopus embryos.
1976,
Pubmed
,
Xenbase
Ernst,
Basolateral plasma membrane localiztion of ouabain-sensitive sodium transport sites in the secretory epithelium of the avian salt gland.
1977,
Pubmed
GLYNN,
The action of cardiac glycosides on sodium and potassium movements in human red cells.
1957,
Pubmed
Hagiwara,
Calcium channel.
1981,
Pubmed
Hagiwara,
Na and Ca components of action potential in amphioxus muscle cells.
1971,
Pubmed
Hara,
A cytoplasmic clock with the same period as the division cycle in Xenopus eggs.
1980,
Pubmed
,
Xenbase
Jaffe,
Electrical controls of development.
1977,
Pubmed
Jaffe,
The role of ionic currents in establishing developmental pattern.
1981,
Pubmed
,
Xenbase
Jaffe,
An ultrasensitive vibrating probe for measuring steady extracellular currents.
1974,
Pubmed
Jaffe,
Control of development by ionic currents.
1979,
Pubmed
Jaffe,
Electrophoresis along cell membranes.
1977,
Pubmed
Jaffe,
Strong electrical currents leave the primitive streak of chick embryos.
1979,
Pubmed
Kalt,
The relationship between cleavage and blastocoel formation in Xenopus laevis. II. Electron microscopic observations.
1971,
Pubmed
,
Xenbase
Louvard,
Apical membrane aminopeptidase appears at site of cell-cell contact in cultured kidney epithelial cells.
1980,
Pubmed
Luchtel,
The effect of injected cytochalasin B on filament organization in the cleaving egg of Xenopus laevis.
1976,
Pubmed
,
Xenbase
Messenger,
The function of the sodium pump during differentiation of amphibian embryonic neurones.
1979,
Pubmed
,
Xenbase
Nuccitelli,
Oöplasmic segregation and secretion in the Pelvetia egg is accompanied by a membrane-generated electrical current.
1978,
Pubmed
Roberson,
Carbohydrate-binding component of amphibian embryo cell surfaces: restriction to surface regions capable of cell adhesion.
1980,
Pubmed
Roberson,
Regional segregation of ConA receptors on dissociated amphibian embryo cells.
1979,
Pubmed
,
Xenbase
Robinson,
Electrical currents through full-grown and maturing Xenopus oocytes.
1979,
Pubmed
,
Xenbase
Sachs,
Interaction of external K, Na, and cardioactive steroids with the Na-K pump of the human red blood cell.
1974,
Pubmed
Sanders,
A freeze-fracture and concanavalin A-binding study of the membrane of cleaving Xenopus embryos.
1976,
Pubmed
,
Xenbase
Sanders,
Furrow formation in Xenopus embryos. Involvement of the golgi body as revealed by ultrastructural localization of thiamine pyrophosphatase activity.
1975,
Pubmed
,
Xenbase
Selman,
Ultrastructural changes in the surface layers of the newt's egg in relation to the mechanism of its cleavage.
1970,
Pubmed
Singal,
Cytomembranes in first cleavage Xenopus embryos. Interrelationship between Golgi bodies, endoplasmic reticulum and lipid droplets.
1974,
Pubmed
,
Xenbase
Singal,
An ultrastructural study of the first cleavage of Xenopus embryos.
1974,
Pubmed
,
Xenbase
Slack,
Intracellular and intercellular potentials in the early amphibian embryo.
1973,
Pubmed
,
Xenbase
Standen,
A potential- and time-dependent blockade of inward rectification in frog skeletal muscle fibres by barium and strontium ions.
1978,
Pubmed
Vorbrodt,
Ultrastructural cytochemistry of membrane-bound phosphatases in preimplantation mouse embryos.
1977,
Pubmed
Webb,
Direct measurement of intracellular pH changes in Xenopus eggs at fertilization and cleavage.
1981,
Pubmed
,
Xenbase
Woodruff,
Electrophoresis of proteins in intercellular bridges.
1980,
Pubmed
Woodward,
Electrical signs of new membrane production during cleavage of Rana pipiens eggs.
1968,
Pubmed
