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Titolo:
PARTICIPATION OF NORADRENERGIC PATHWAYS IN THE EXPRESSION OF OPIATE WITHDRAWAL - BIOCHEMICAL AND PHARMACOLOGICAL EVIDENCE
Autore:
MALDONADO R;
Indirizzi:
UNIV PARIS 05,DEPT PHARMACOCHIM MOL & STRUCT,UFR SCI PHARMACEUT & BIOL,FAC PHARM F-75270 PARIS 06 FRANCE
Titolo Testata:
Neuroscience and biobehavioral reviews
fascicolo: 1, volume: 21, anno: 1997,
pagine: 91 - 104
SICI:
0149-7634(1997)21:1<91:PONPIT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRECIPITATED MORPHINE-WITHDRAWAL; LOCUS-COERULEUS NEURONS; MU-OPIOID RECEPTOR; MESOLIMBIC DOPAMINE RELEASE; PERIAQUEDUCTAL GRAY-MATTER; RAT CEREBRAL-CORTEX; DEPENDENT RATS; PHYSICAL-DEPENDENCE; NUCLEUS-ACCUMBENS; PREFRONTAL CORTEX;
Keywords:
MORPHINE DEPENDENCE; WITHDRAWAL; ABSTINENCE; NORADRENALINE; DOPAMINE; ADRENOCEPTOR; CLONIDINE; LOCUS COERULEUS; NUCLEUS PARAGIGANTOCELLULARIS;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
137
Recensione:
Indirizzi per estratti:
Citazione:
R. Maldonado, "PARTICIPATION OF NORADRENERGIC PATHWAYS IN THE EXPRESSION OF OPIATE WITHDRAWAL - BIOCHEMICAL AND PHARMACOLOGICAL EVIDENCE", Neuroscience and biobehavioral reviews, 21(1), 1997, pp. 91-104

Abstract

Several lines of biochemical and pharmacological evidence provide support for the involvement of the noradrenergic system in the expressionof the somatic symptoms of opiate withdrawal. Early studies reported changes in brain noradrenaline and metabolite levels during opiate dependence. The significance of these changes has been clarified in recent microdialysis studies indicating that acute morphine decreases the extraneuronal levels of noradrenaline, whereas an increase in release of the neurotransmitter occurs during opiate withdrawal in several brain areas. Changes in the sensitivity and density of alpha(2)- and beta-adrenoceptors have also been reported, probably as a consequence of the decreased presynaptic noradrenergic activity induced during morphinedependence. In addition, the administration of alpha(2)-agonists, such as clonidine, or beta-antagonists, such as propranolol, has been reported to attenuate some manifestations of opiate withdrawal. The noradrenergic structure mediating the expression of opioid abstinence seemsto be the locus coeruleus. However, the activation of the locus coeruleus during morphine withdrawal seems to be primarily due to the afferent projections containing excitatory amino acids and derived from thenucleus paragigantocellularis, although intrinsic modifications, consisting of an up-regulation of the cAMP pathway, seem also to be involved in this activation. The participation of the mesolimbic dopaminergic system in opiate dependence and its relation with the changes produced in the noradrenergic system are also discussed. Copyright (C) 1996 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 02:13:41