Linked Life Data

15584926

Source:http://linkedlifedata.com/resource/pubmed/id/15584926

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2004-12-8
pubmed:abstractText
We recently showed that pharmacological blockade of nociceptin/orphanin FQ (N/OFQ) peptide (NOP) receptors located in the substantia nigra stimulates the nigrostriatal dopaminergic pathway and motor behavior (Marti et al. J. Neurosci. 2004, 24, 6659-6666). To investigate whether such motor-stimulating action was dependent on functional dopaminergic transmission, the selective NOP receptor peptide antagonist [Nphe1,Arg14,Lys15]N/OFQ-NH2 (UFP-101) was microinjected into the substantia nigra reticulata of rats made cataleptic by systemic haloperidol administration. UFP-101 reduced haloperidol-induced akinesia as measured by immobility time in the bar test. UFP-101 also induced contralateral turning in cataleptic rats. To investigate the mechanisms involved in the anti-akinetic action of UFP-101, nigral glutamate release was monitored by microdialysis technique. The anti-akinetic action of UFP-101 correlated with normalization of nigral glutamate release, previously elevated by haloperidol injection. We conclude that endogenous N/OFQ in the substantia nigra sustains akinesia generated by impaired DA transmission and subthalamic nucleus overactivation. NOP receptor antagonists may be beneficial in the symptomatic therapy of parkinsonism, via normalization of subthalamonigral glutamatergic transmission.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-3042
pubmed:author
pubmed:issnType
Print
pubmed:volume
91
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1501-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Blockade of nociceptin/orphanin FQ transmission in rat substantia nigra reverses haloperidol-induced akinesia and normalizes nigral glutamate release.
pubmed:affiliation
Department of Experimental and Clinical Medicine, Section of Pharmacology, Neuroscience Center, University of Ferrera, Ferrera, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't