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research article
EFFECTS OF CORTICOSTERONE ON MORPHINE-INDUCED CONDITIONED PLACE PREFERENCE AND CONDITIONED LOCOMOTION ACTIVITY
Authors
隋 南
李勇辉
+4 more
杨晓燕
罗小景
郑希耕
隋南
Publication date
1 January 2004
Publisher
Abstract
目的 :研究皮质酮作用下吗啡条件性位置偏爱 (CPP)及条件性精神运动的变化趋势及其可能机制 ,为探讨应激、环境线索诱发复吸的机制提供基础。方法 :32只♂SD大鼠分成 4组。训练 2d ,1次药物匹配训练 (吗啡 2mg·kg- 1 ,皮质酮 5mg·kg- 1 ,ip ,提前 2 0min注射 ) ,1次生理盐水训练。观察训练前后大鼠在伴药侧停留的时间 ,急性给药后的运动及条件性精神运动的变化。结果 :(1)吗啡组训练后在伴药侧停留的时间显著长于对照组 (P 0 0 5 ) ; (2 )在 5 0、6 0min时皮质酮吗啡组的急性精神运动显著大于吗啡组和对照组 (P <0 0 1) ; (3)皮质酮吗啡组大鼠的条件性精神运动显著大于对照组、吗啡组 (P <0 0 1,P <0 0 5 )。结论 :5mg·kg- 1 的皮质酮显著抑制吗啡CPP的获得 ,但促进吗啡条件性精神运动的获得以及急性精神运动。CPP与条件性精神运动获得的机制可能存在差
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oai:/ir.psych.ac.cn:311026/214...
Last time updated on 11/06/2025