Linked Life Data

9824470

Source:http://linkedlifedata.com/resource/pubmed/id/9824470

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
1999-1-14
pubmed:abstractText
We investigated the effects of oxygen (O2)/glucose deprivation on intracellular sodium concentration ([Na+]i) of cortical pyramidal cells in a slice preparation of rat frontal cortex. Intracellular recordings were combined with microfluorometric measurements of [Na+]i using the Na+-sensitive dye sodium-binding benzofuran isophthalate (SBFI). Deprivation of O2/glucose caused an initial membrane hyperpolarization that was followed by a slowly developing large depolarization. Levels of [Na+]i started to increase significantly during the phase of membrane hyperpolarization. Neither tetrodotoxin, a combination of ionotropic and metabotropic glutamate receptor antagonists (D-amino-phosphonovalerate, 6-cyano-7-nitroquinoxaline-2,3-dione plus S-methyl-4-carboxyphenylglycine) nor bepridil, an inhibitor of the Na+/Ca2+-exchanger, affected these responses to O2/ glucose. The present results demonstrate that, in cortical neurons, O2/glucose deprivation induces an early rise in [Na+]i which cannot be ascribed to the activity of voltage gated Na+-channels, glutamate receptors or of the Na+/Ca2+-exchanger.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0953-816X
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3572-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Early sodium elevations induced by combined oxygen and glucose deprivation in pyramidal cortical neurons.
pubmed:affiliation
Clinica Neurologica, Dipartimento di Neuroscienze, Università Tor Vergata, Rome, Italy. pisani@uniroma2.it
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't