POSSIBLE SEROTONERGIC AND DOPAMINERGIC MEDIATION OF THE N-ETHYL-3,4-METHYLENEDIOXYAMPHETAMINE DISCRIMINATIVE STIMULUS
rat; 3; 2; Pharmacology & Pharmacy; dopamine; drug discrimination; fenfluramine; serotonin; quipazine; amphetamine; mde; mdma; p-chlorophenylalanine; pigeons; saline; tfmpp; (3; 4-methylenedioxyamphetamine); 4-methylenedioxymethamphetamine); 4-tetrahydro-beta-carboline; 5-ht (5-hydroxytryptamine; 6-methoxy-1; mde (n-ethyl-3
Eight male rats previously trained to discriminate 2.0 mg/kg N-ethyl-3,4-methylenedioxyamphetamine (MDE) from its vehicle in a two-lever, food motivated task were utilized to characterize the stimulus properties of MDE. The 5-HT receptor agonists 1-(m-trifluoromethylphenyl)piperazine (TFMPP), quipazine and 6-methoxy-1,2,3,4 tetrahydro-beta-carboline were able to generalize to the stimulus produced by MDE. However, the 5-HT receptor agonists m-chlorophenylpiperazine (mCPP), buspirone and norfenfluramine, the dopamine receptor agonist amphetamine, as well as the acetylcholine receptor agonist arecoline did not completely generalize. In addition, the simultaneous administration of norfenfluramine and amphetamine generalized to MDE. Pretreatment with the serotonin receptor antagonists cinanserin and metergoline or the dopamine receptor antagonist haloperidol failed to completely inhibit the discriminative stimulus produced by MDE. Multiple p-chlorophenylalanine (PCPA) pretreatments significantly reduced MDE discrimination, whereas vehicle discrimination was unaffected. Five days following cessation of PCPA pretreatment, MDE discrimination returned to criterion levels and remained at that level. These results suggest that the stimulus produced by MDE involve a complex interaction of various neurotransmitters, with both serotonergic and dopaminergic components.
Boja J W; Schechter M D
European Journal of Pharmacology
1991
1991-09
Journal Article or Conference Abstract Publication
<a href="http://doi.org/10.1016/0014-2999(91)90277-w" target="_blank" rel="noreferrer noopener">10.1016/0014-2999(91)90277-w</a>
The Local Monoaminergic Dependency Of Spinal Ketamine
(intrathecal); 5-ht (5-hydroxytryptamine; analgesia; antinociception; cord; inhibition; ketamine; neurons; norepinephrine; opiate; opioid receptors; optical isomers; pharmacology; Pharmacology & Pharmacy; rat-brain; receptor; serotonin; tail-flick test
Crisp T; Perrotti J M; Smith D L; Stafinsky J L; Smith D J
European Journal of Pharmacology
1991
1991-03
Journal Article or Conference Abstract Publication
<a href="http://doi.org/10.1016/0014-2999(91)90101-u" target="_blank" rel="noreferrer noopener">10.1016/0014-2999(91)90101-u</a>