Linked Life Data

1357097

Source:http://linkedlifedata.com/resource/pubmed/id/1357097

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-10-26
pubmed:abstractText
The effects of arachidonic acid and phorbol esters in the Ca(2+)-dependent release of glutamate evoked by 4-aminopyridine (4-AP) in rat cerebrocortical synaptosomes were studied. In the absence of arachidonic acid, high concentrations (500 nM) of 4 beta-phorbol dibutyrate (4 beta-PDBu) were required to enhance the release of glutamate. However, in the presence of arachidonic acid, low concentrations of 4 beta-PDBu (1-50 nM) were effective in potentiating glutamate exocytosis. This potentiation of glutamate release by phorbol esters was not observed with the methyl ester of arachidonic acid, which does not activate protein kinase C. Moreover, pretreatment of synaptosomes with the protein kinase inhibitor staurosporine also prevented the stimulatory effect by arachidonic acid and phorbol esters. These results suggest that the activation of protein kinase C by both arachidonic acid and phorbol esters may play a role in the potentiation of glutamate exocytosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0022-3042
pubmed:author
pubmed:issnType
Print
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1574-7
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Activation of protein kinase C by phorbol esters and arachidonic acid required for the optimal potentiation of glutamate exocytosis.
pubmed:affiliation
Departamento de Bioquímica, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't