de Moura Fernando B, Kohut Stephen J, Bergman Jack
Preclinical Pharmacology Laboratory, McLean Hospital.
Exp Clin Psychopharmacol. 2018 Oct;26(5):497-502. doi: 10.1037/pha0000222. Epub 2018 Jul 2.
Disulfiram (Antabuse), an acetaldehyde dehydrogenase and dopamine-beta hydroxylase inhibitor, has shown promise in preclinical and clinical studies as a pharmacotherapy for cocaine addiction. However, the extent to which disulfiram may alter the abuse-related behavioral effects of related psychostimulants, such as methamphetamine, is unknown. Here, the therapeutic potential of disulfiram was evaluated by examining its impact on the reinforcing and discriminative stimulus effects of d-methamphetamine in adult rhesus monkeys (N = 4 per group). In subjects trained to respond for injections of methamphetamine or food delivery, i.v. methamphetamine (.001-.032 mg/kg) maintained dose-related and stable levels of self-administration in all subjects. Pretreatment with disulfiram (5.6 mg/kg) produced a significant downward shift in the d-methamphetamine dose-response function; surprisingly, lower and higher pretreatment doses (3.0 mg/kg; 10 mg/kg) were ineffective. Also, disulfiram (3-10 mg/kg) did not significantly alter food-maintained responding or, in subjects trained to discriminate the effects of cocaine from vehicle, the ability of d-methamphetamine (.032-.32 mg/kg) to substitute for cocaine. Taken together, the present data reveal dose-dependent effects of disulfiram in modifying some of the abuse-related effects of d-methamphetamine and provides support for future investigations examining the capacity of disulfiram as a treatment for d-methamphetamine abuse. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
双硫仑(戒酒硫)是一种乙醛脱氢酶和多巴胺-β羟化酶抑制剂,在临床前和临床研究中已显示出作为可卡因成瘾药物疗法的前景。然而,双硫仑可能改变相关精神兴奋剂(如甲基苯丙胺)与滥用相关的行为效应的程度尚不清楚。在此,通过检查双硫仑对成年恒河猴(每组N = 4)中d-甲基苯丙胺的强化和辨别刺激效应的影响,评估了双硫仑的治疗潜力。在经过训练对注射甲基苯丙胺或提供食物做出反应的受试者中,静脉注射甲基苯丙胺(0.001 - 0.032 mg/kg)在所有受试者中维持了与剂量相关的稳定自我给药水平。用双硫仑(5.6 mg/kg)预处理使d-甲基苯丙胺剂量反应函数显著向下移动;令人惊讶的是,较低和较高的预处理剂量(3.0 mg/kg;10 mg/kg)无效。此外,双硫仑(3 - 10 mg/kg)并未显著改变食物维持的反应,或者在经过训练以区分可卡因与赋形剂效应的受试者中,d-甲基苯丙胺(0.032 - 0.32 mg/kg)替代可卡因的能力。综上所述,目前的数据揭示了双硫仑在改变d-甲基苯丙胺一些与滥用相关效应方面的剂量依赖性效应,并为未来研究双硫仑作为d-甲基苯丙胺滥用治疗方法的能力提供了支持。(PsycINFO数据库记录(c)2018美国心理学会,保留所有权利)