PMID- 7855195 OWN - NLM STAT- MEDLINE DCOM- 19950316 LR - 20190726 IS - 0033-3158 (Print) IS - 0033-3158 (Linking) VI - 113 IP - 2 DP - 1993 TI - Behavioral characterization of alpha-ethyltryptamine, a tryptamine derivative with MDMA-like properties in rats. PG - 284-7 AB - Several reports have speculated that the tryptamine-derived drug alpha-ethyltryptamine (AET) may have effects similar to those of the amphetamine-derived drug 3,4-methylenedioxymethamphetamine (MDMA). Indeed, the US Drug Enforcement Administration has recently placed AET on the Schedule I list because of its putative similarity to MDMA. The Behavioral Pattern Monitor, which quantifies locomotor and investigatory responses of rats, was used to characterize the effects of AET in a paradigm that distinguishes between the effects of traditional hallucinogens, amphetamine-like stimulants, and MDMA-like drugs. First, a dose-response study revealed that all doses of AET tested (5, 10, 20 mg/kg) significantly increased locomotor activity. Locomotor hyperactivity is produced by MDMA or amphetamine-like stimulants, but not by classical hallucinogens, such as LSD or mescaline. Additionally, AET significantly decreased measures of investigatory behavior. Similar decreases occur with MDMA or hallucinogen administration. Second, as with MDMA, the locomotor hyperactivity induced by AET was attenuated by pretreatment (10 mg/kg) with the serotonin reuptake inhibitor fluoxetine. Thus, AET, a tryptamine-derived drug, appears to produce an MDMA-like profile of behavioral changes by virtue of releasing presynaptic serotonin. FAU - Krebs, K M AU - Krebs KM AD - Department of Psychology, University of California at San Diego, La Jolla 92093. FAU - Geyer, M A AU - Geyer MA LA - eng GR - DA02925/DA/NIDA NIH HHS/United States GR - MH00188/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Germany TA - Psychopharmacology (Berl) JT - Psychopharmacology JID - 7608025 RN - 0 (Receptors, Presynaptic) RN - 0 (Receptors, Serotonin) RN - 0 (Tryptamines) RN - 01K63SUP8D (Fluoxetine) RN - 333DO1RDJY (Serotonin) RN - GR181O3R32 (etryptamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Behavior, Animal/*drug effects MH - Exploratory Behavior/drug effects MH - Fluoxetine/pharmacology MH - Male MH - Motor Activity/drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/antagonists & inhibitors/pharmacokinetics/*pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Presynaptic/drug effects/metabolism MH - Receptors, Serotonin/drug effects/metabolism MH - Serotonin/metabolism MH - Tryptamines/antagonists & inhibitors/pharmacokinetics/*pharmacology EDAT- 1993/01/01 00:00 MHDA- 1993/01/01 00:01 CRDT- 1993/01/01 00:00 PHST- 1993/01/01 00:00 [pubmed] PHST- 1993/01/01 00:01 [medline] PHST- 1993/01/01 00:00 [entrez] AID - 10.1007/BF02245712 [doi] PST - ppublish SO - Psychopharmacology (Berl). 1993;113(2):284-7. doi: 10.1007/BF02245712.