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|a eng
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|a Ribeiro Do Couto, B
|e verfasserin
|4 aut
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|a Reinstatement of morphine-induced conditioned place preference in mice by priming injections
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|c 2003
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|a Text
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|a Date Completed 17.06.2004
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|a Date Revised 30.03.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a To construct a model of relapse of drug abuse in mice, the induction, we evaluated the extinction and reinstatement of morphine-induced place preference. In Experiment 1, we examined the effects of morphine (0, 2, 3, 5, 10, 20 and 40 mg/kg) in the conditioned place preference (CPP) paradigm. Mice showed CPP with 5, 10, 20 and 40 mg/kg. In Experiment 2, we evaluated the effects of two different extinction procedures. After conditioning with 40 mg/kg of morphine, the mice underwent daily extinction sessions of 60 or 15 min of duration. CPP was extinguished after seven and nine sessions, respectively. In Experiment 3, we tested the reinstating effects of several priming doses of morphine. Mice were conditioned with 40 mg/kg of morphine and underwent the daily 15 min extinction sessions until CPP was no longer evident. Then, the effects of morphine (0, 2, 3, 5, 10, 20, 40 mg/kg, i.p.) were evaluated. CPP was reinstated by doses from 5 mg/kg upward. The results show that morphine priming injections are effective in reactivating opiate-seeking behavior in mice, and thus, the CPP paradigm might be useful to investigate the mechanisms underlying relapse of drug abuse
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Narcotics
|2 NLM
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| 650 |
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|a Morphine
|2 NLM
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|2 NLM
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| 700 |
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|a Aguilar, M A
|e verfasserin
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|a Manzanedo, C
|e verfasserin
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|a Rodríguez-Arias, M
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| 700 |
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|a Miñarro, J
|e verfasserin
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|i Enthalten in
|t Neural plasticity
|d 1998
|g 10(2003), 4 vom: 01., Seite 279-90
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