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Literature DB >> 4216627

Intracellular sodium and potassium concentrations in toad and frog oocytes during development.

Abstract

1. During growth of oocytes of Bufo bufo from approximately 700-2000 mum in diameter, intracellular Na rose from 20 to 120 m-mole/l. cell water while K fell from 120 to 15 m-mole/l. cell water.2. In Rana temporaria Na similarly rose from 9 to 190 m-mole/l. cell water and K fell from 126 to 28 m-mole/l. cell water.3. At the same time in both Bufo and Rana the ouabain-sensitive Na efflux, the ouabain-insensitive Na efflux, and the total Na influx all increased.4. It is concluded that the predominant process is an increase of passive Na permeability. The increase of apparently active Na efflux may be secondary to the consequent rise in intracellular Na.

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Year: 1974 PMID： 4216627 PMCID： PMC1331044 DOI： 10.1113/jphysiol.1974.sp010668

Source DB: PubMed Journal: J Physiol ISSN： 0022-3751 Impact factor: 5.182

9 in total

1. NA FLUXES IN SINGLE TOAD OOCYTES WITH SPECIAL REFERENCE TO THE EFFECT OF EXTERNAL AND INTERNAL NA CONCENTRATION ON NA EFFLUX.

Authors: D A DICK; E J LEA
Journal: J Physiol Date: 1964-10 Impact factor: 5.182

8. The distribution of sodium, potassium and chloride in the nucleus and cytoplasm of Bufo bufo oocytes measured by electron microprobe analysis.

Authors: D A Dick
Journal: J Physiol Date: 1978-11 Impact factor: 5.182

9. Elevated intracellular Na⁺ concentrations in developing spinal neurons.

Authors: Casie Lindsly; Carlos Gonzalez-Islas; Peter Wenner
Journal: J Neurochem Date: 2017-01-23 Impact factor: 5.372

9 in total

Intracellular sodium and potassium concentrations in toad and frog oocytes during development.

1. NA FLUXES IN SINGLE TOAD OOCYTES WITH SPECIAL REFERENCE TO THE EFFECT OF EXTERNAL AND INTERNAL NA CONCENTRATION ON NA EFFLUX.

2. Uptake of ( 3 H)ouabain and Na pump turnover rates in cells cultured in ouabain.

3. Autoradiographic demonstration of inhomogeneous distribution of sodium in single oocytes of Bufo bufo.

4. Intracellular sodium and potassium concentrations in oocytes of Bufo bufo at the beginning of maturation.

5. The action of ethacrynic acid on sodium efflux from single toad oocytes.

6. The distribution of sodium and potassium in amphibian embryos during early development.

7. The concentrations of water, sodium and potassium in the nucleus and cytoplasm of amphibian oocytes.

8. Sodium and potassium in oocytes of Triturus cristatus.

9. The effect of surface microvilli on the water permeability of single toad oocytes.

1. A possible mechanism for concentrating sodium and potassium in the cell nucleus.

2. Proceedings: Binding to nerve and muscle of saxitoxin labelled by a new method of tritium exchange.

3. The distribution of small ions during the early development of Xenopus laevis and Ambystoma mexicanum embryos.

4. Sodium fluxes in single amphibian oocytes: further studies and a new model.

5. Exaggerated hyperkalaemia in acute myeloid leukaemia.

6. Intracellular sodium and potassium concentrations in oocytes of Bufo bufo at the beginning of maturation.

7. Activity coefficients of intracellular Na+ and K+ during development of frog oocytes.

8. The distribution of sodium, potassium and chloride in the nucleus and cytoplasm of Bufo bufo oocytes measured by electron microprobe analysis.

9. Elevated intracellular Na⁺ concentrations in developing spinal neurons.