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首页> 外文期刊>Alcohol >Effects of chronic naltrexone treatment in rats on place preference and locomotor activation after acute administration of cocaethylene or ethanol plus cocaine.
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Effects of chronic naltrexone treatment in rats on place preference and locomotor activation after acute administration of cocaethylene or ethanol plus cocaine.

机译:大鼠慢性纳曲酮治疗对急性给予可卡因或乙醇加可卡因后位置偏爱和运动活化的影响。

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摘要

When cocaine and ethanol are taken together a cocaine metabolite called cocaethylene is produced. Investigators have determined that cocaine, ethanol, and cocaethylene all produce a conditioned place preference when administered intraperitoneally. On the basis of the moderate success of naltrexone at attenuating the rewarding effects of ethanol and cocaine administered independently, we examined the ability of chronic naltrexone treatment (administered by means of subcutaneous implant across 6 days) to reduce the preference and motor-stimulating effects resulting from intraperitoneal administration of cocaethylene (Experiment 1) and the co-administration of ethanol with cocaine (Experiment 2) in outbred rats. Results demonstrated naltrexone modestly reduced conditioned place preference for cocaethylene but had no effect on the locomotor stimulation resulting from cocaethylene administration. Naltrexone failed to decrease the preference for the chamber paired with co-administration of ethanol and cocaine and did not change the degree of locomotor activation produced by these drugs. These results support the suggestion that naltrexone as a pharmacotherapy to treat co-abuse of ethanol and cocaine in human beings may have limited benefits.
机译:当可卡因和乙醇放在一起时,会产生称为可卡乙烯的可卡因代谢产物。研究人员已经确定,腹膜内给药时,可卡因,乙醇和可卡因乙烯均会产生条件性位置偏爱。基于纳曲酮在减轻单独给予乙醇和可卡因的奖励作用方面取得的中度成功,我们研究了慢性纳曲酮治疗(通过皮下植入治疗6天)减轻患者的偏爱和运动刺激作用的能力。腹腔注射可卡因(实验1)和乙醇与可卡因的共同给药(实验2)。结果表明纳曲酮适度降低了对可卡因的条件位置偏爱,但对因使用可卡因引起的运动刺激没有影响。纳曲酮未能降低对腔室的偏爱,并不能同时使用乙醇和可卡因,也没有改变这些药物产生的自发激活程度。这些结果支持以下建议:纳曲酮作为治疗人类乙醇和可卡因共同滥用的药物疗法可能具有有限的益处。

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