方法:采用连续7d给小鼠注射羟考酮(5mg·kg-1,ip),停药5d,d13用相同剂量的羟考酮(5mg·kg-1,ip)激发致小鼠行为敏化模型,利用红外光束自主活动测定仪测定小鼠自发活动的实验方法。
结果:ι-THP(6.25,12.5,18.75mg·kg-1,ig)一次或多次给药,对小鼠的自发活动没有影响,但ι-THP(18.75mg·kg-1,ig)能抑制羟考酮(5mg·kg-1,ip)引起的小鼠行为敏化的形成和表达.阿朴吗啡(0.5、1.0mg·kg-1,ip)给药后50min自身不影响小鼠的自发活动,但阿朴吗啡(1.0mg·kg-1,ip)能翻转ι-THP(18.75mg·kg-1,ig)抑制羟考酮小鼠行为敏化形成的作用,但不影响ι-THP抑制羟考酮行为敏化表达的作用。
结论:ι-THP抑制羟考酮引起的小鼠行为敏化的形成和表达,ι-THP抑制羟考酮行为敏化的形成可能与抑制DA受体相关,而抑制表达可能与抑制DA受体无关。
关键词:ι-四氢巴马汀,羟考酮,行为敏化,DA受体
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