INTERACTION OF SIGMA AND PCP-LIKE DRUGS ON OPERANT BEHAVIORS IN THE RAT

被引:15
作者
HUDZIK, TJ [1 ]
SLIFER, BL [1 ]
机构
[1] UNIV NEW ORLEANS,DEPT PSYCHOL,BEHAV PHARMACOL LAB,NEW ORLEANS,LA 70148
关键词
PHENCYCLIDINE; MK-801; N-ALLYLNORMETAZOCINE; SCHEDULE-CONTROLLED BEHAVIOR; DRUG INTERACTIONS; DRL-FR;
D O I
10.1007/BF02245295
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Many PCP-like drugs interact with at least two types of binding sites in the CNS, one of which is linked to excitatory amino acid transmission and the other with an unknown function. The present experiments were designed to further clarify the mechanism of action of drugs in this class. Assessment was made of the effects of PCP, MK-801, (+)-pentazocine, (+)- and (-)-N-allyl-normetazocine (NANM), (+)-amphetamine and BMY-14802 in rats responding under a multiple timeout 600 s (TO), differential reinforcement of low rates 10 s (DRL), fixed ratio (FR) 10 schedule of reinforcement. The effects of the PCP-receptor selective drug MK-801 were compared to those of the mixed sigma/PCP drug (+)-NANM after each were combined with doses of (+)-pentazocine, PCP, BMY-14802, and (+)-amphetamine. MK-801 was also tested in combination with (+)-NANM, as was PCP with BMY-14802. When administered alone, MK-801, PCP, (+)-NANM, (+)-pentazocine, and (+)-amphetamine increased rates of responding under the DRL component of the multiple schedule. The drugs tested generally produced decreases in rates of responding under the FR component. (+)-Pentazocine and BMY-14802 did not modify the effects of (+)-NANM or of MK-801. PCP enhanced the effects of MK-801 and (+)-NANM, and (+)-amphetamine enhanced the effects of MK-801 but not of (+)-NANM. BMY-14802 attenuated the effects of PCP. Taken together, these data suggest similarities as well as some differences in the pharmacologic activities of MK-801 and (+)-NANM and PCP.
引用
收藏
页码:115 / 122
页数:8
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