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Testosterone as a discriminative stimulus in male rats.

机译:睾丸激素是雄性大鼠的一种歧视性刺激。

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Testosterone and other anabolic-androgenic steroids (AAS) are reinforcing in animals, as determined by conditioned place preference or self-administration. Most drugs of abuse produce subjective effects on mood and perception that initiate and maintain drug taking. Whether AAS have similar effects is not known. Food-restricted male Sprague-Dawley rats (n=9) were tested for their ability to discriminate an injection of testosterone from the beta-cyclodextrin vehicle using a standard two-lever operant paradigm. In drug discrimination, animals use the subjective effects of drug or vehicle to select the appropriate lever to obtain food pellets under an FR10 schedule of reinforcement. All rats demonstrated vigorous responding for food (1415.1+/-76.1 responses/20 min) with 94.9% of responses on the active lever. For the first 30 days, rats received 1mg/kg testosterone sc 30 min before testing. On Day 14, one rat achieved the discrimination criteria of 9/10 consecutive days with >90% responses on the active lever and
机译:睾丸激素和其他合成代谢雄激素类固醇(AAS)在动物中增强,这取决于条件性场所偏爱或自我给药。大多数滥用药物会对情绪和知觉产生主观影响,从而引发和维持吸毒状态。 AAS是否具有类似的作用尚不清楚。食物限制的雄性Sprague-Dawley大鼠(n = 9)使用标准的两杆操作范式测试了从β-环糊精媒介物中区分睾丸激素注射的能力。在药物区分中,动物利用药物或媒介物的主观效果来选择适当的杠杆,以根据FR10强化时间表获得食物颗粒。所有大鼠均表现出对食物的强烈应答(1415.1 +/- 76.1应答/ 20分钟),主动杠杆上有94.9%的应答。在开始的前30天,大鼠在测试前30分钟接受了1mg / kg睾丸激素sc。在第14天,一只大鼠达到了连续9/10天的判别标准,在第一次加固之前,主动杆的响应> 90%,非主动杆的

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