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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1996-6-14
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pubmed:abstractText |
Rapid (5 Hz) chronoamperometric recordings using Nafion-coated carbon fiber electrodes (30-90 microns o.d.) combined with pressure-ejection of potassium from micropipettes were used to investigate potassium-evoked overflow of dopamine (DA) in the striatum of young (5 to 10 years old) and middle-aged (19 to 23 years old) anesthetized rhesus monkeys. The potassium-evoked DA-like signals from the 19- to 23-year-old animals were significantly lower in amplitude than those recorded in the young animals. In addition, the temporal dynamics of DA signals in the caudate nucleus of middle-aged animals were faster, while the time courses of the signals recorded in the putamen of middle-aged monkeys were significantly longer as compared to the signals recorded from young animals. Moreover, home cage activity levels of the middle-aged animals were significantly lower. Taken together, these data support age-related changes in the output of DA from DA fibers in the striatum of middle-aged monkeys.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0197-4580
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
16
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
939-46
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:8622785-Age Factors,
pubmed-meshheading:8622785-Animals,
pubmed-meshheading:8622785-Behavior, Animal,
pubmed-meshheading:8622785-Caudate Nucleus,
pubmed-meshheading:8622785-Corpus Striatum,
pubmed-meshheading:8622785-Dopamine,
pubmed-meshheading:8622785-Evoked Potentials,
pubmed-meshheading:8622785-Female,
pubmed-meshheading:8622785-Macaca mulatta,
pubmed-meshheading:8622785-Potassium,
pubmed-meshheading:8622785-Putamen
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pubmed:articleTitle |
Age-related changes in potassium-evoked overflow of dopamine in the striatum of the rhesus monkey.
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pubmed:affiliation |
Department of Psychiatry, University of Colorado Health Sciences Center, Denver 80262, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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