Linked Life Data

7869099

Source:http://linkedlifedata.com/resource/pubmed/id/7869099

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1995-3-29
pubmed:abstractText
Microdialysis in behaving animals was used to concomitantly characterize the dopamine and 5-HT responses in the caudate and the norepinephrine response in the hippocampus to the D- and L-isomers of amphetamine and methamphetamine. Doses of all four drugs which promoted similar stereotypy responses produced a D-amphetamine-like response profile of dopamine and dopamine metabolites, suggesting that all these drugs interact with dopamine systems to facilitate the release of transmitter. However, in contrast to the similar behavioral profiles, the magnitude of the dopamine responses diverged significantly. In addition, all four drugs increased extracellular norepinephrine and 5-HT, but the relative responses differed markedly from dopamine and from each other. The contrasting structure-activity relationships for these drugs likely reflect their differential potency at the various neuronal uptake transporters in promoting either transmitter release, and/or uptake blockade. In addition, the interaction of each drug at the vesicular transporters, as well as the availability of a cytoplasmic pool of transmitter likely also contribute to the neurotransmitter response. Because of the particularly divergent transmitter response profiles exhibited by L-methamphetamine, its behavioral and neurotransmitter effects were characterized over a more extended range of doses. Although the duration of the increase in extracellular dopamine was clearly proportional to dose, the dose-dependent increases in the magnitude of the dopamine response did not parallel the behavioral profiles. The results of these studies indicate that, while the dopamine, norepinephrine and 5-HT responses to these drugs probably contribute to the expression of stimulant-induced behaviors, simple relationships between the neurotransmitter responses and the behavioral profiles were not evident.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0270-6474
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1308-17
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Hippocampus norepinephrine, caudate dopamine and serotonin, and behavioral responses to the stereoisomers of amphetamine and methamphetamine.
pubmed:affiliation
Psychiatry Department, UC San Diego School of Medicine, La Jolla 92093-0603.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.