首页> 外文期刊>Pharmacology, Biochemistry and Behavior >MDMA stimulus generalization to the 5-HT(1A) serotonin agonist 8-hydroxy-2- (di-n-propylamino)tetralin.
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MDMA stimulus generalization to the 5-HT(1A) serotonin agonist 8-hydroxy-2- (di-n-propylamino)tetralin.

机译:MDMA刺激一般化为5-HT(1A)血清素激动剂8-羟基-2-(二-正丙基氨基)四氢化萘。

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摘要

The abused substance N-methyl-1-(3, 4-methylenedioxyphenyl)-2-aminopropane, or MDMA, serves as a training drug in animals. Because the 5-HT(1A) receptor antagonist NAN-190 has been shown to partially antagonize the MDMA stimulus, and because NAN-190 binds at several different types of receptors, in the present study we examined other agents (e.g., adrenergic, dopaminergic, sigma) in tests of stimulus generalization and stimulus antagonism to determine their influence on the MDMA stimulus. Each of these agents (i.e., clenbuterol, S(-)propranolol, R(+)SCH-23390, amantadine, NANM) was without effect on MDMA-appropriate responding. The finding that NAN-190 behaves as a 5-HT(1A) partial agonist in some studies prompted examination of the 5-HT(1A) receptor agonist 8-OH DPAT and its optical isomers. MDMA-stimulus generalization occurred to racemic 8-OH DPAT (ED(50) = 0.3 mg/kg), R(+)8-OH DPAT (ED(50) = 0.2 mg/kg), and to the 5-HT(1A) receptor partial agonist S(-)8-OH DPAT (ED(50) = 0.4 mg/kg). The results suggest that the MDMA stimulus might possess a 5-HT(1A) component of action. Furthermore, because 8-OH DPAT is known to enhance the stimulus effects of hallucinogens as discriminative stimuli, and because MDMA reportedly enhances the effects of hallucinogenic agents in humans ("flipping," "candy flipping"), this latter MDMA-induced phenomenon might involve a 5-HT(1A) mechanism.
机译:滥用的物质N-甲基-1-(3,4-亚甲基二氧苯基)-2-氨基丙烷或MDMA可作为动物的训练药物。由于5-HT(1A)受体拮抗剂NAN-190已显示出部分拮抗MDMA刺激的作用,并且由于NAN-190结合了几种不同类型的受体,因此在本研究中,我们研究了其他药物(例如,肾上腺素能,多巴胺能,sigma)在刺激泛化和刺激拮抗作用的测试中确定它们对MDMA刺激的影响。这些药物中的每一种(即盐酸克伦特罗,S(-)普萘洛尔,R(+)SCH-23390,金刚烷胺,NANM)均不影响MDMA适当的应答。在一些研究中,NAN-190充当5-HT(1A)部分激动剂的发现促使人们检查了5-HT(1A)受体激动剂8-OH DPAT及其旋光异构体。 MDMA刺激泛化发生于外消旋体8-OH DPAT(ED(50)= 0.3 mg / kg),R(+)8-OH DPAT(ED(50)= 0.2 mg / kg)和5-HT( 1A)受体部分激动剂S(-)8-OH DPAT(ED(50)= 0.4 mg / kg)。结果表明,摇头丸刺激可能具有5-HT(1A)作用的组成部分。此外,由于已知8-OH DPAT增强了致幻剂作为判别性刺激的刺激作用,并且据报道,由于MDMA增强了致幻剂对人体的作用(“翻转”,“糖果翻转”),因此后一种MDMA诱导的现象可能涉及5-HT(1A)机制。

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