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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1992-3-31
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pubmed:abstractText |
Alterations in glutamate content and uptake have been reported to occur in aged animals. The present studies used [3H]D-Aspartic acid [( 3H]-D-ASP) release as a marker for glutamate neurotransmission. Frequency dependent [3H]-D-ASP release was measured in adult (8 month) and aged (28-30 month) Fischer 344 rats. Relatively high stimulation frequencies (greater than 10 Hz) were required to induce [3H]-D-ASP release in both adult and aged F344 rats in temporal cortex and hippocampus. In both brain areas aged animals showed significantly more [3H]-D-ASP release than adult animals. Kainic acid 1 mM failed to induce the release of [3H]-D-ASP in either temporal cortex or hippocampus. Omega conotoxin GVIA (5 x 10(-9) M) a N and L type voltage sensitive calcium channel antagonist failed to inhibit [3H]-D-ASP stimulated release. These results demonstrate an increase in [3H]-D-ASP release in aged compared to adult F344 rats. The data also suggest a novel calcium channel may be involved in [3H]-D-ASP release.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Aspartic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Kainic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Peptides, Cyclic,
http://linkedlifedata.com/resource/pubmed/chemical/omega-Conotoxin GVIA
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0364-3190
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
17
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
151-6
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1311433-Aging,
pubmed-meshheading:1311433-Animals,
pubmed-meshheading:1311433-Aspartic Acid,
pubmed-meshheading:1311433-Brain,
pubmed-meshheading:1311433-Calcium Channels,
pubmed-meshheading:1311433-Electric Stimulation,
pubmed-meshheading:1311433-Hippocampus,
pubmed-meshheading:1311433-Kainic Acid,
pubmed-meshheading:1311433-Male,
pubmed-meshheading:1311433-Peptides, Cyclic,
pubmed-meshheading:1311433-Rats,
pubmed-meshheading:1311433-Rats, Inbred F344,
pubmed-meshheading:1311433-Temporal Lobe,
pubmed-meshheading:1311433-omega-Conotoxin GVIA
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pubmed:year |
1992
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pubmed:articleTitle |
[3H]D-aspartic acid release in brain slices of adult and aged Fischer 344 rates.
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pubmed:affiliation |
Department of Pharmacodynamics, University of Florida, Gainesville 32610.
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pubmed:publicationType |
Journal Article,
Comparative Study
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