Synaptic plasticity in the mesolimbic system: therapeutic implications for substance abuse.

Synaptic plasticity in the mesolimbic system: therapeutic implications for substance abuse.
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DOI:
10.1111/j.1749-6632.2009.05154.x
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发表时间:
2010-02
影响因子:
5.2
通讯作者:
Bonci A
Bonci A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chen BT;Hopf FW;Bonci A

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在不断变化的环境中,动物必须学习新的行为策略,才能成功获得食物、性和其他需求。中脑边缘系统内的突触可塑性是一个关键的奖励回路,使动物能够适应和执行基本的目标导向行为。具有讽刺意味的是,滥用药物也会引起中脑边缘系统内的突触变化,并且假设这种变化会促进有害的药物寻求行为,而不是健康的适应性行为。在这篇综述中,我们将讨论中脑边缘系统的两个关键区域腹侧被盖区和伏核的兴奋性传递中药物诱导的神经适应,以及多巴胺受体在这些神经适应发展中的可能作用。特别是,我们将重点讨论最近的研究,这些研究显示 AMPA 受体功能的变化作为成瘾药物的常见分子靶点,以及这种神经适应可能产生的行为后果。
In an ever-changing environment, animals must learn new behavioral strategies for the successful procurement of food, sex, and other needs. Synaptic plasticity within the mesolimbic system, a key reward circuit, affords an animal the ability to adapt and perform essential goal-directed behaviors. Ironically, drugs of abuse can also induce synaptic changes within the mesolimbic system, and such changes are hypothesized to promote deleterious drug-seeking behaviors in lieu of healthy, adaptive behaviors. In this review, we will discuss drug-induced neuroadaptations in excitatory transmission in the ventral tegmental area and the nucleus accumbens, two critical regions of the mesolimbic system, and the possible role of dopamine receptors in the development of these neuroadaptations. In particular, we will focus our discussion on recent studies showing changes in AMPA receptor function as a common molecular target of addictive drugs, and the possible behavioral consequences of such neuroadaptations.
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