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Company: Fisher Scientific
Catalog#: 666264
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Examining Cocaine Conditioning Place Preference in Mice
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2020-04-20
[Abstract]  A key component of combating substance use disorders is understanding the neural mechanisms that support drug reward. Tasks such as self-administration assess the reinforcing properties of a drug using a learned behavior but require numerous training sessions and surgery. In comparison, the conditioned place preference (CPP) task assesses reward with little training, without costly surgeries, and confounds that accompany the use of anesthesia or pain-relieving drugs. The CPP task contains three phases: pretest, conditioning, and posttest. During the pretest, mice are allowed to explore a three-compartment apparatus. The two outer compartments contain unique olfactory, tactile, and visual cues whereas the middle compartment is used as an entrance and exit for the mice on test days. During ... [摘要]  [摘要 ] 对抗药物滥用症的关键因素是了解支持药物奖励的神经机制。诸如自我管理之类的任务会通过学习行为来评估药物的增强特性,但需要进行大量的培训和手术。有条件的位置偏爱(CPP)任务无需培训就可以评估奖励,而无需进行昂贵的手术,并且在使用麻醉或痛苦镇痛时会感到困惑 CPP任务包含三个阶段:预测试,条件调整和后测试。在预测试期间,允许小鼠探索三格设备。两个外层格包含独特的嗅觉,触觉和视觉提示,中间格是在调节过程中,小鼠在被限制在一个外部隔室中之前接受可卡因。第二天,给小鼠注射生理盐水,然后将其限制在另一个外部隔室中,然后重复这些配对一次,在后测,小鼠被允许自由地探索所有舱室在无毒品国家虽然花费在每个隔间的时间记录。CPP的得分计算两者的检测前后通过比较花费在Cocai的时间NE-配对和盐水配对隔间从前测到后测的CPP分数的提高可以衡量可卡因的奖励特性。优点:1)同时记录运动活动和报酬,这可能利用不同的神经机制; 2)三室CPP设置消除了在两室设计中可以观察到的偏差,以及3)使用多模式提示支持在各种小鼠品系中获得强大的偏好。

[背景 ] 条件位置偏爱(CPP)范式已用于研究基因,组蛋白修饰,信号传导途径和大脑区域在与药物相关的记忆和奖赏中的作用(参见Tzschentke ,1998;Malvaez 等,2009)。 ...

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