Galnon facilitates extinction of morphine-conditioned place preference but also potentiates the consolidation process.

Galnon facilitates extinction of morphine-conditioned place preference but also potentiates the consolidation process.
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Galnon 促进吗啡条件下的位置偏好的消除,同时也增强了巩固过程

DOI:
10.1371/journal.pone.0076395
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Wang Z
Wang Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhao X;Yun K;Seese RR;Wang Z

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学习和记忆系统与毒瘾密切相关。先前的研究表明,甘丙肽(一种与 G 蛋白偶联受体结合的神经肽)在记忆编码中发挥着重要作用。在本研究中,我们使用条件位置偏好(CPP)(药物相关记忆中广泛使用的范例)测试了甘丙肽受体1和2激动剂galnon在奖励相关记忆中的功能。在 CPP 诱导吗啡给药之前或之后,在四个不同的时间点注射甘丙肽,以测试甘丙肽激活对不同奖励相关记忆过程的影响:CPP 训练前 15 分钟(习得)、CPP 训练后立即(巩固)、后条件测试前 15 分钟(检索)以及后测试后多次注射(再巩固和消退)。 Galnon 增强吗啡诱导的 CPP 记忆的巩固和消退过程,但该化合物对习得、检索或再巩固过程没有影响。我们的研究结果表明,甘丙肽受体 1 和 2 激动剂 galnon 可作为一种可行的化合物,通过促进记忆消退过程来治疗药物成瘾。
Learning and memory systems are intimately involved in drug addiction. Previous studies suggest that galanin, a neuropeptide that binds G-protein coupled receptors, plays essential roles in the encoding of memory. In the present study, we tested the function of galnon, a galanin receptor 1 and 2 agonist, in reward-associated memory, using conditioned place preference (CPP), a widely used paradigm in drug-associated memory. Either before or following CPP-inducing morphine administration, galnon was injected at four different time points to test the effects of galanin activation on different reward-associated memory processes: 15 min before CPP training (acquisition), immediately after CPP training (consolidation), 15 min before the post-conditioning test (retrieval), and multiple injection after post-tests (reconsolidation and extinction). Galnon enhanced consolidation and extinction processes of morphine-induced CPP memory, but the compound had no effect on acquisition, retrieval, or reconsolidation processes. Our findings demonstrate that a galanin receptor 1 and 2 agonist, galnon, may be used as a viable compound to treat drug addiction by facilitating memory extinction process.
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