Literature DB >> 6261870

Clearance of extracellular potassium: evidence for spatial buffering by glial cells in the retina of the drone.

A R Gardner-Medwin, J A Coles, M Tsacopoulos.   

Abstract

Work with ion-selective microelectrodes on the retina of the honeybee drone has shown that potassium is released from photoreceptors during activity and enters glial cells. Measurements of the extracellular voltage gradients indicate that, in this preparation, currents flowing through the glial cells in the 'spatial buffer' pattern account for a large fraction of the glial K+ entry in the active region of the tissue.

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Year:  1981        PMID： 6261870     DOI： 10.1016/0006-8993(81)90169-4

Source DB:  PubMed          Journal:  Brain Res        ISSN： 0006-8993            Impact factor:   3.252


  21 in total

1.  Spatial buffering of potassium ions in brain extracellular space.

Authors:  K C Chen; C Nicholson
Journal:  Biophys J       Date:  2000-06       Impact factor: 4.033

2.  The regulation of intracellular pH by identified glial cells and neurones in the central nervous system of the leech.

Authors:  J W Deitmer; W R Schlue
Journal:  J Physiol       Date:  1987-07       Impact factor: 5.182

Review 3.  Potassium buffering in the central nervous system.

Authors:  P Kofuji; E A Newman
Journal:  Neuroscience       Date:  2004       Impact factor: 3.590

4.  Voltage-gated potassium currents in myelinating Schwann cells in the mouse.

Authors:  T Konishi
Journal:  J Physiol       Date:  1990-12       Impact factor: 5.182

5.  Glial cells are involved in the exciting effects of doxapram on brainstem slices in vitro.

Authors:  Guo-cai Li; Hong-tian Zhang; Yong-gang Jiao; Zhong-hai Wu; Fang Fang; Jing Cheng
Journal:  Cell Mol Neurobiol       Date:  2010-02-07       Impact factor: 5.046

6.  Spatial buffering of light-evoked potassium increases by retinal Müller (glial) cells.

Authors:  C J Karwoski; H K Lu; E A Newman
Journal:  Science       Date:  1989-05-05       Impact factor: 47.728

7.  Membrane potential dependence of intracellular pH regulation by identified glial cells in the leech central nervous system.

Authors:  J W Deitmer; M Szatkowski
Journal:  J Physiol       Date:  1990-02       Impact factor: 5.182

8.  Stimulus-induced changes in extracellular Na+ and Cl- concentration in relation to changes in the size of the extracellular space.

Authors:  I Dietzel; U Heinemann; G Hofmeier; H D Lux
Journal:  Exp Brain Res       Date:  1982       Impact factor: 1.972

9.  Some properties of single potassium channels in cultured oligodendrocytes.

Authors:  H Kettenmann; R K Orkand; H D Lux
Journal:  Pflugers Arch       Date:  1984-03       Impact factor: 3.657

10.  Changes of extracellular potassium activity induced by electric current through brain tissue in the rat.

Authors:  A R Gardner-Medwin; C Nicholson
Journal:  J Physiol       Date:  1983-02       Impact factor: 5.182
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