Linked Life Data

9216985

Source:http://linkedlifedata.com/resource/pubmed/id/9216985

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1997-9-2
pubmed:abstractText
A minority subset of cortical neurones exhibit kainate-activated Co2+ uptake, a marker for AMPA/kainate receptor gated Ca2+-permeable channels. Consistent with enhanced Ca2+ influx through these channels, Co2+-positive neurones are unusually vulnerable to death induced by exposure to either AMPA or kainate. Here we show that Co2+-positive cortical neurones express a distinctive profile of AMPA receptor subunits as determined by immunostaining. Co2+-positive neurones were much less likely to express GluR2/GluR3, and much more likely to express GluR1 or GluR4, than the general cortical neuronal population. Thus expression of AMPA receptors lacking the GluR2 subunit may explain the Co2+ staining, and selective vulnerability to kainate exhibited by Co2+-positive cells. Almost all GABAergic neurones, identified by immunostaining for glutamic acid decarboxylase, were Co2+-positive. The widespread presence of Ca2+-permeable AMPA/kainate receptor-gated channels on cortical GABAergic neurones may have important implications for the fate of cortical inhibition in disease states associated with the excitotoxic overstimulation of glutamate receptors.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0969-9961
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Cortical neurones with Ca2+ permeable AMPA/kainate channels display distinct receptor immunoreactivity and are GABAergic.
pubmed:affiliation
Department of Neurology, University of California Irvine, Irvine, California 92717-4290, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't