Titre : | Intravenous buprenorphine self-administration by detoxified heroin abusers (2002) |
Auteurs : | S. D. COMER ; E. D. COLLINS ; M. W. FISCHMAN |
Type de document : | Article : Périodique |
Dans : | Journal of Pharmacology and Experimental Therapeutics (Vol.301, n°1, April 2002) |
Article en page(s) : | 266-276 |
Langues: | Anglais |
Discipline : | TRA (Traitement et prise en charge / Treatment and care) |
Mots-clés : |
Thésaurus mots-clés DESINTOXICATION ; BUPRENORPHINE ; INJECTION ; USAGER ; HEROINE ; AUTOADMINISTRATION ; RENFORCEMENT ; CURE DE DESINTOXICATIONThésaurus géographique ETATS-UNIS |
Résumé : | Several sources indicate that intravenously administered buprenorphine may have significant abuse liability in humans. The present study evaluated the reinforcing effects of intravenously administered buprenorphine (0, 2, and 8 mg) in detoxified heroin-dependent participants during a 7.5-week inpatient study. Participants (n = 6) were detoxified from heroin over a 1.5-week period immediately after admission. Testing subsequently occurred in three 2-week blocks. During the first week of each 2-week block, the reinforcing effects of buprenorphine were evaluated. Participants first received a dose of buprenorphine and $20 and then were given either the opportunity to self-administer the dose or $20 during choice sessions. During the second week of each 2-week block, the direct effects of heroin were measured to evaluate potential long-lasting antagonist effects of buprenorphine. Progressive ratio break-point values were significantly higher after 2 and 8 mg of buprenorphine compared with placebo. Correspondingly, several positive subjective ratings increased after administration of active buprenorphine relative to placebo. Although there were few differences in peak effects produced by 2 versus 8 mg of buprenorphine, the higher buprenorphine dose generally produced longer-lasting effects. Heroin also produced dose-related increases in several subjective effects. Peak ratings produced by heroin were generally higher than peak ratings produced by buprenorphine. There was little evidence of residual antagonism produced by buprenorphine. These results demonstrate that buprenorphine served as a reinforcer under these conditions, and that it may have abuse liability in nonopioid-dependent individuals who abuse heroin. |
Domaine : | Autres substances / Other substances ; Drogues illicites / Illicit drugs |
Affiliation : | The New York State Psychiatric Institute and College of Physicians and Surgeons of Columbia University, New York, NY, USA |
Lien : | http://dx.doi.org/10.1124/jpet.301.1.266 |
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