Linked Life Data

2546645

Source:http://linkedlifedata.com/resource/pubmed/id/2546645

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-8-31
pubmed:abstractText
Opioid agonists having different affinity for delta and mu receptors were injected bilaterally in the substantia nigra (SN) of rats. The selective agonist of mu receptors N-MePhe3,-D-Pro4 morphiceptin (PLO 17) produced a stereotyped behavior characterized by stereotyped sniffing and gnawing antagonized by the irreversible antagonist of mu receptors beta-funaltrexamine. In contrast, bilateral intranigral injection of the selective delta agonist D-Pen2,D-Pen5 enkephalin (DPDPE) elicited dose-dependent exploratory behavior and rearing but failed to produce gnawing. The behavioral syndrome induced by DPDPE was significantly reduced by the selective delta antagonist ICI 174,864. Naloxine, a non-selective opioid antagonist, antagonized the effects of both compounds. SCH 23390 and haloperidol, two antagonists of dopaminergic D1 and D2 receptors, respectively, blocked the effects of PLO 17 and DPDPE. The results indicate that stimulation of specific opioid receptor types in the SN elicits specific behavioral syndromes and suggest that the SN might be the site of origin of certain items of the behavioral syndrome evoked by systemic opiates. These items might be mediated by activation of dopaminergic neurons of the ventral mesencephalon.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
487
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
120-30
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Substantia nigra as a site of origin of dopamine-dependent motor syndromes induced by stimulation of mu and delta opioid receptors.
pubmed:affiliation
Institute of Pharmacology and Experimental Toxicology, University of Cagliari, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't