Linked Life Data

10881035

Source:http://linkedlifedata.com/resource/pubmed/id/10881035

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-8-24
pubmed:abstractText
Drug-associated contextual cues can exert a powerful influence on behavior through associative pairing between the drug and the environment. However, the anatomical and molecular substrates for these effects are not well characterized. Using a drug-conditioning paradigm, we examined the expression of the immediate early gene product, Fos, within specific brain circuits using immunocytochemical detection. Rats were given either morphine (5 mg/ml/kg) or saline once a day for 10 days. The drug administration was always paired with a specific environment (activity monitors) different from the home cage. Following this treatment, the rats were returned to the cages at various times thereafter, with only a mock injection. Conditioned behavioral activation was observed in rats at 3, 5, and 7 days following treatment with morphine. In rats showing the conditioned motor response, several cortical and limbic areas showed substantial increases in the number of Fos positive cells, indicating that these regions were more active during exposure to the drug-paired environment. Areas that were most activated included prefrontal cortex, cingulate cortex, nucleus accumbens, and preoptic area. Further analysis showed that this increase in Fos expression was not directly related to the increase in motor activity, and that the drug-associated conditioning and Fos expression was lessened at 7 days and absent by 14 days post-treatment. These results are discussed in terms of their relevance to the problem of relapse in drug addiction.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0887-4476
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Wiley-Liss, Inc.
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
146-58
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Morphine-associated environmental cues elicit conditioned gene expression.
pubmed:affiliation
Neuroscience Training Program, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA. beschroe@students.wisc.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.