Cognitive dysfunction is a major feature of drug addiction. In the present paper, we compared the decision-making ability using the Iowa gambling task of methadone- and buprenorphine-maintained individuals to non opiate-dependent drug-free controls. Buprenorphine-maintained individuals performed better than methadone-maintained individuals, and not differently than non opiate-dependent controls. In addition, methadone-maintained individuals had more perseverative errors on the Wisconsin card sorting task (WCST) as compared with non opiate-dependent drug-free controls whereas buprenorphine-maintained individuals had intermediate scores. Scores on Weschler adult intelligence scale (WAIS-R) were similar for methadone- and buprenorphine-maintained individuals whereas drug-free controls had significantly higher scores. In addition, both opiate- dependent groups performed more poorly than drug-free controls on the Benton visual retention test (BVRT). The results suggest that buprenorphine in contrast to methadone improves decision-making, and thus may be more effective in rehabilitation programs of opiate-dependent subjects and this improvement may be related to its distinct pharmacological action as a k antagonist.

Impaired decision-making in opiate-dependent subjects: Effect of pharmacological therapies / Pirastu, R; Fais, R; Messina, M; Bini, V; Spiga, S; Falconieri, D; Diana, Marco. - In: DRUG AND ALCOHOL DEPENDENCE. - ISSN 0376-8716. - 83:2(2006), pp. 163-168. [10.1016/j.drugalcdep.2005.11.008]

Impaired decision-making in opiate-dependent subjects: Effect of pharmacological therapies

DIANA, Marco
2006-01-01

Abstract

Cognitive dysfunction is a major feature of drug addiction. In the present paper, we compared the decision-making ability using the Iowa gambling task of methadone- and buprenorphine-maintained individuals to non opiate-dependent drug-free controls. Buprenorphine-maintained individuals performed better than methadone-maintained individuals, and not differently than non opiate-dependent controls. In addition, methadone-maintained individuals had more perseverative errors on the Wisconsin card sorting task (WCST) as compared with non opiate-dependent drug-free controls whereas buprenorphine-maintained individuals had intermediate scores. Scores on Weschler adult intelligence scale (WAIS-R) were similar for methadone- and buprenorphine-maintained individuals whereas drug-free controls had significantly higher scores. In addition, both opiate- dependent groups performed more poorly than drug-free controls on the Benton visual retention test (BVRT). The results suggest that buprenorphine in contrast to methadone improves decision-making, and thus may be more effective in rehabilitation programs of opiate-dependent subjects and this improvement may be related to its distinct pharmacological action as a k antagonist.
2006
Impaired decision-making in opiate-dependent subjects: Effect of pharmacological therapies / Pirastu, R; Fais, R; Messina, M; Bini, V; Spiga, S; Falconieri, D; Diana, Marco. - In: DRUG AND ALCOHOL DEPENDENCE. - ISSN 0376-8716. - 83:2(2006), pp. 163-168. [10.1016/j.drugalcdep.2005.11.008]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/78025
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