Linked Life Data

9109360

Source:http://linkedlifedata.com/resource/pubmed/id/9109360

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1997-6-27
pubmed:abstractText
The effects of N-nitro-L-arginine methyl ester (L-NAME), a nitric oxide (NO) synthase inhibitor, were examined on Mg2+-free-induced epileptiform activity, in guinea-pig piriform cortex slices in vitro. L-NAME (0.1-1 mM) had no effect on neuronal membrane properties or electrically-evoked postsynaptic potentials (PSPs). In contrast, during superfusion of the slices with Mg2+-free solution neurones exhibited spontaneous and stimulus-evoked epileptiform potentials that were suppressed in the presence of L-NAME (100 microM) or the selective NMDA receptor antagonist DL-APV (100 microM). The inhibitory effects induced by L-NAME were reversibly reduced by L-arginine (1 mM), but not D-arginine (1 mM), the latter drug not being a substrate for NO formation. It was concluded that L-NAME can suppress epileptiform activity induced by Mg2+-free exposure primarily through a decrease in presynaptic transmitter release, although additional actions on the NMDA-receptor complex were also considered.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0028-1298
pubmed:author
pubmed:issnType
Print
pubmed:volume
355
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
452-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Inhibition of nitric oxide synthase prevents magnesium-free-induced epileptiform activity in guinea-pig piriform cortex neurones in vitro.
pubmed:affiliation
Department of Pharmacology, The School of Pharmacy, London, UK.
pubmed:publicationType
Journal Article, In Vitro