Linked Life Data

7613626

Source:http://linkedlifedata.com/resource/pubmed/id/7613626

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1995-8-23
pubmed:abstractText
The involvement of protein kinase C (PKC)-dependent processes in adaptive and plastic changes underlying neuronal plasticity was tested in an in vivo animal model characterized by targeted cellular ablation of cortical and hippocampal neurons, cognitive impairment and lack of induction of long-term potentiation. [3H]Phorbol ester binding performed on brain slices revealed a 67.4 and 35.0% increase in membrane-bound protein kinase C in the cortex and hippocampus respectively of rats treated with methylazoxy-methanol acetate compared with saline-treated control rats, and there was no modification in the expression of mRNAs of different protein kinase C isozymes. In situ phosphorylation experiments performed with 32Pi-labelled synaptosomes from the affected areas demonstrated that the phosphorylation of the nervous tissue-specific presynaptic membrane-associated protein kinase C substrate B-50/GAP-43 was increased by 51.4 and 44.8% in cortex and hippocampus respectively. Western blot analysis of protein kinase C in synaptosomal cytosol and membrane fractions prepared from cortex and hippocampus showed an increased proportion of protein kinase C in the membrane compartment in treated animals, but no change in the total synaptosomal protein kinase C activity. Our data are consistent with increased activity of presynaptic protein kinase C and predict a sustained increase in glutamate release in methylazoxy-methanol-treated rats.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0953-816X
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
899-906
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Changes in protein kinase C and its presynaptic substrate B-50/GAP-43 after intrauterine exposure to methylazoxy-methanol, a treatment inducing cortical and hippocampal damage and cognitive deficit in rats.
pubmed:affiliation
Institute of Pharmacological Sciences, University of Milan, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't