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对短期选择的小鼠品系中乙醇奖赏和厌恶表型进行基因相关性分析,这些品系是为乙醇饮用或乙醇诱导的条件性味觉厌恶而培育的。

Genetic correlational analyses of ethanol reward and aversion phenotypes in short-term selected mouse lines bred for ethanol drinking or ethanol-induced conditioned taste aversion.

作者信息

Phillips Tamara J, Broadbent Julie, Burkhart-Kasch Sue, Henderson Carly, Wenger Charlotte D, McMullin Carrie, McKinnon Carrie S, Cunningham Christopher L

机构信息

Department of Behavioral Neuroscience and Portland Alcohol Research Center, Oregon Health & Science University, Portland, OR 97239, USA.

出版信息

Behav Neurosci. 2005 Aug;119(4):892-910. doi: 10.1037/0735-7044.119.4.892.

Abstract

Short-term selective breeding created mouse lines divergent for ethanol drinking (high drinking short-term selected line [STDRHI], low drinking [STDRLO]) or ethanol-induced conditioned taste aversion (CTA; high [HTA], low [LTA]). Compared with STDRLO, STDRHI mice consumed more saccharin and less quinine, exhibited greater ethanol-induced conditioned place preference (CPP), and showed reduced ethanol stimulation and sensitization under some conditions; a line difference in ethanol-induced CTA was not consistently found. Compared with LTA, HTA mice consumed less ethanol but were similar in saccharin consumption, sensitivity to ethanol-induced CPP, and ethanol-induced locomotor stimulation and sensitization. These data suggest that ethanol drinking is genetically associated with several reward-and aversion-related traits. The interpretation of ethanol-induced CTA as more genetically distinct must be tempered by the inability to test the CTA lines beyond Selection Generation 2.

摘要

短期选择性育种培育出了在乙醇饮用方面存在差异的小鼠品系(高饮用量短期选择品系[STDRHI]、低饮用量[STDRLO])或乙醇诱导的条件性味觉厌恶(CTA;高[HTA]、低[LTA])。与STDRLO相比,STDRHI小鼠摄入更多的糖精且更少的奎宁,表现出更强的乙醇诱导的条件性位置偏爱(CPP),并且在某些条件下显示出乙醇刺激和敏化作用降低;未一致发现乙醇诱导的CTA存在品系差异。与LTA相比,HTA小鼠摄入更少的乙醇,但在糖精摄入量、对乙醇诱导的CPP的敏感性以及乙醇诱导的运动刺激和敏化方面相似。这些数据表明,乙醇饮用与几种奖赏和厌恶相关性状存在遗传关联。由于无法在选择代2之后对CTA品系进行测试,因此将乙醇诱导的CTA解释为在遗传上更具独特性这一观点必须谨慎对待。

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