Neuropharmacology of N,N-dimethyltryptamine
Brain Research Bulletin April 30, 2016 Theresa M. Carbonaro, Michael B. Gatch 258 citations
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Michael B. Gatch
University of North Texas Health Science Center
6 papers in the library · 390 citations · publishing 2011-2023
Papers
The role of 5-HT2A, 5-HT2C and mGlu2 receptors in the behavioral effects of tryptamine hallucinogens N,N-dimethyltryptamine and N,N-diisopropyltryptamine in rats and mice
Psychopharmacology July 2, 2014 Theresa M. Carbonaro, Amy J. Eshleman, Michael J. Forster et al. 67 citations
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Abuse Liability Profile of Three Substituted Tryptamines
Journal of Pharmacology and Experimental Therapeutics April 8, 2011 Michael B. Gatch, Michael J. Forster, Aaron Janowsky et al. 42 citations
Three synthetic hallucinogens—DIPT, 5-MeO-DET, and 5-MeO-AMT—produced behavioral effects in rats similar to those of known abused hallucinogens like LSD and DMT, but not to psychostimulants like cocaine or methamphetamine. DIPT fully substituted for DMT and DOM, while 5-MeO-DET fully substituted for DMT; none fully substituted for cocaine or methamphetamine. All three compounds acted at serotonin 5-HT(1A) and 5-HT(2A) receptors and blocked serotonin reuptake. 5-MeO-AMT also weakly released serotonin and blocked dopamine uptake. DIPT and 5-MeO-DET may have abuse liability similar to hallucinogens and were hazardous at high doses, causing activity and lethality.
Discriminative Stimulus Effects of Substituted Tryptamines in Rats
ACS Pharmacology & Translational Science December 29, 2020 Michael B. Gatch, Adam C. Hoch, Theresa M. Carbonaro 13 citations
Eight novel substituted tryptamines produced hallucinogen-like effects in rats trained to discriminate the hallucinogen DOM from saline. All compounds fully substituted for DOM, with potencies equal to or less than DOM. Four compounds—4-OH-MET, 4-OH-DET, 4-OH-DMT, and 4-AcO-DMT—reduced response rates at fully substituting doses. Because these compounds mimic DOM's discriminative stimulus effects, they may carry similar abuse liability. 4-Acetoxy substituted compounds were less potent than 4-hydroxy ones, and N,N-diisopropyl compounds were less potent than those with dimethyl, diethyl, N-methyl-N-ethyl, or N-methyl-N-isopropyl groups.
Methylenedioxymethamphetamine-like discriminative stimulus effects of seven cathinones in rats
Behavioural Pharmacology June 1, 2020 Michael B. Gatch, Sean B. Dolan, Michael J. Forster 6 citations
Most synthetic cathinones tested produce effects similar to the club drug MDMA in rats, but not all. In rats trained to distinguish MDMA from a placebo, six of seven cathinones—4-fluoromethcathinone, 4-methylmethcathinone, 4-methylethcathinone, 3-fluoromethcathinone, pentedrone, and ethylone—fully substituted for MDMA's discriminative stimulus effects. Methcathinone produced at most 43% MDMA-like responding, and higher doses suppressed responding. The potency of MDMA-like versus psychostimulant-like effects varied substantially among compounds, indicating that some synthetic cathinones are more MDMA-like than psychostimulant-like. This variability suggests that cathinones with MDMA-like effects may be more likely used as club drugs.
Locomotor and discriminative stimulus effects of three benzofuran compounds in comparison to abused psychostimulants
Drug and Alcohol Dependence Reports August 10, 2023 Rebecca D. Hill, Ritu A. Shetty, Nathalie Sumien et al. 4 citations
Three synthetic benzofurans—5-APDB, 5-MAPB, and 6-APB—were tested in mice and rats to compare their behavioral effects with MDMA, cocaine, and methamphetamine. In mice, 6-APB produced strong locomotor stimulation 20 to 50 minutes after injection, while 5-MAPB caused modest stimulation, and 5-APDB initially depressed then modestly stimulated activity. All three compounds were more potent than MDMA. In rats trained to discriminate MDMA from saline, all three benzofurans fully substituted for MDMA, indicating similar subjective effects. Only 5-MAPB fully substituted for cocaine, and none fully substituted for methamphetamine. The findings suggest these benzofurans may have abuse liability as substitutes for MDMA.