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A dopamine transport inhibitor with markedly low abuse liability suppresses cocaine self-administration in the rat
dc.contributor.author | Ferragud, Antonio | |
dc.contributor.author | Velázquez Sánchez, Clara | |
dc.contributor.author | Hernández-Rabaza, Vicente | |
dc.contributor.author | Nácher, Amparo | |
dc.contributor.author | Merino, Virginia | |
dc.contributor.author | Carda, Miguel | |
dc.contributor.author | Murga, Juan | |
dc.contributor.author | Canales, Juan José | |
dc.date.accessioned | 2014-07-08T11:45:51Z | |
dc.date.available | 2014-07-08T11:45:51Z | |
dc.date.issued | 2009 | |
dc.identifier.issn | 0033-3158 | |
dc.identifier.uri | http://hdl.handle.net/10234/97163 | |
dc.description.abstract | RATIONALE N-substituted benztropine analogs are potent dopamine uptake inhibitors that display pharmacokinetic/dynamic properties consistent with the profile of a substitute medication for cocaine addiction. OBJECTIVES The purpose of the present experiments was to characterize in rats the addictive-like properties of one such analog, 3α-[bis(4′-fluorophenyl)methoxy]-tropane (AHN-1055), incorporating probes of its stimulant and incentive/motivational effects and of its ability to influence cocaine self-administration. METHODS We used open field activity and drug self-administration assays. To examine the effects of AHN-1055 on locomotor behavior, the analog was administered alone (0, 1, 3, and 10 mg/kg intraperitoneally) and in combination with cocaine (15 mg/kg i.p.). The influence of AHN-1055 on cocaine's intake was studied by administering the analog (0, 3, and 10 mg/kg i.p.) before the start of the self-administration sessions. To compare the addictive-like properties of AHN-1055 and cocaine, progressive ratio performance and abstinence-induced context-conditioned relapse were evaluated. RESULTS AHN-1055 evoked robust and sustained locomotor activity when administered alone and increased cocaine-induced locomotor stimulation. Notably, the analog showed by comparison to cocaine weak reinforcing efficacy in a modified progressive ratio schedule of drug reinforcement, and contrary to cocaine, it showed no ability to promote context-conditioned relapse to drug seeking following stable self-administration and abstinence. Further, AHN-1055 treatment blocked cocaine intake dose-dependently in rats with a steady history of cocaine self-administration without reducing responding for sucrose, a natural reward. CONCLUSIONS These findings demonstrate essential psychopharmacological differences between AHN-1055 and cocaine and highlight important properties of the analog as a possible pharmacotherapy in cocaine addiction. | ca_CA |
dc.format.extent | 8 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Springer-Verlag | ca_CA |
dc.relation.isPartOf | Psychopharmacology, 207, 2, p. 281-289 | ca_CA |
dc.rights | © Springer-Verlag 2009 | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Cocaine self-administration | ca_CA |
dc.subject | Addiction | ca_CA |
dc.subject | Benztropine analogs | ca_CA |
dc.subject | AHN-1055 | ca_CA |
dc.title | A dopamine transport inhibitor with markedly low abuse liability suppresses cocaine self-administration in the rat | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1007/s00213-009-1653-x | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://link.springer.com/article/10.1007/s00213-009-1653-x | ca_CA |
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