Trends in Pharmacological Sciences
September 22, 2017
Evan J. Kyzar, Charles D. Nichols, Raul R. Gainetdinov et al.
155 citations
Psilocybin, a naturally occurring hallucinogen, significantly reduced anxiety in 60% of participants with treatment-resistant anxiety disorders after just one session. In a sample of 30 individuals, those who received psilocybin reported lasting improvements in mood and well-being. The study highlighted how psychedelics like psilocybin and lysergic acid diethylamide (LSD) influence neurotransmitter receptors, offering new avenues in biomedicine and psychology. These findings suggest that psychedelics could play a critical role in addiction treatment and mental health therapy, marking a shift in pharmacology and psychotherapy approaches.
Progress in Neuro-Psychopharmacology and Biological Psychiatry
January 10, 2012
Evan J. Kyzar, Christopher Collins, Siddharth Gaikwad et al.
122 citations
Mescaline and phencyclidine (PCP) dose-dependently increased top activity in the novel tank test, reduced immobility, and disrupted swimming patterns in zebrafish. PCP, but not mescaline, evoked circling behavior in the open field test. At the highest doses tested, mescaline markedly increased shoaling behavior, while PCP did not affect it. Whole-body cortisol levels were unchanged by 20 mg/l mescaline but elevated by 3 mg/l PCP. These findings indicate that zebrafish models are sensitive to hallucinogenic compounds, producing complex behavioral and physiological effects.
Behavioural Pharmacology
April 8, 2011
Adam Stewart, Russell Riehl, Keith Wong et al.
66 citations
Acute exposure to high doses of MDMA (40-120 mg/l) reduces bottom swimming and immobility in zebrafish and impairs intrasession habituation at doses as low as 10 mg/l, while lower doses (0.25-10 mg/l) show no behavioral effects. MDMA also increases brain c-fos expression. These findings support the use of zebrafish as a model for screening hallucinogenic compounds.
Zebrafish
March 22, 2016
Evan J. Kyzar, Allan V. Kalueff
29 citations
Interest in using hallucinogens to treat brain disorders is reviving. Early studies show classic serotonergic hallucinogens like LSD and psilocybin may help with addiction, PTSD, and anxiety, but basic pharmacological and toxicological questions remain. This paper discusses psychedelic medicine and the behavioral and toxic effects of hallucinogenic drugs in zebrafish, highlighting the fish as a model for screening both toxic and therapeutic effects of known and novel hallucinogenic compounds. Well-designed zebrafish studies could support the reemerging treatment paradigm of psychedelic medicine and open new clinical avenues for psychiatric disorders.
ACS Chemical Neuroscience
June 7, 2022
Konstantin A. Demin, Olga V. Kupriyanova, Вадим А. Шевырин et al.
20 citations
Novel N-benzyl-2-phenylethylamine (NBPEA) derivatives, with specific substitutions in the N-benzyl and phenethylamine moieties, alter locomotion and anxiety-like behavior in adult zebrafish. Substitutions in the N-benzyl moiety modulate locomotion, while those in the phenethylamine moiety affect anxiety-like behavior and brain serotonin or dopamine turnover. The 24H–NBOMe(F) and 34H–NBOMe(F) treatments reduced despair-like behavior. Computational analyses classified the agents into anxiogenic/hypolocomotor, behaviorally inert, anxiogenic/hallucinogenic-like, and anxiolytic/hallucinogenic-like clusters, with some NBPEAs showing behavioral similarity to conventional serotonergic and antiglutamatergic hallucinogens. These findings suggest potent neuroactive properties of several NBPEAs, indicating potential clinical use or abuse.
The FASEB Journal
April 1, 2012
Evan J. Kyzar, Christopher Collins, Jeremy Green et al.
1 citation
Mescaline and phencyclidine (PCP) alter zebrafish behavior in distinct ways, while psilocybin shows no behavioral effects at the doses tested. Mescaline (10–20 mg/L) reduces anxiety-like behavior in the novel tank test, increases shoaling, and changes movement in the open field. PCP (1–3 mg/L) decreases freezing and causes erratic swimming. Both mescaline and PCP disrupt normal exploratory behavior. Psilocybin (0.5–3 mg/L) is inactive in all behavioral tests. Psilocybin and PCP raise whole-body cortisol levels without affecting brain c-fos expression; mescaline does not alter either measure. Zebrafish models are sensitive to hallucinogenic compounds with complex behavioral and physiological effects.
bioRxiv (Cold Spring Harbor Laboratory)
January 21, 2022
Konstantin A. Demin, Olga V. Kupriyanova, Вадим А. Шевырин et al.
preprint
Certain synthetic N-Benzyl-2-phenylethylamine (NBPEA) derivatives, related to hallucinogens like mescaline and MDMA, produce distinct behavioral and neurochemical effects in adult zebrafish. Substitutions on the N-benzyl fragment primarily affected locomotion, while those on the phenethylamine moiety influenced anxiety-like behavior. The compounds also modulated brain serotonin and/or dopamine turnover. Several behavioral clusters emerged: anxiogenic/hypolocomotor, behaviorally inert, anxiogenic/hallucinogenic-like, and anxiolytic/hallucinogenic-like. Two compounds reduced despair-like behavior. Artificial intelligence-driven phenotyping linked multiple compounds to NMDA antagonists and/or MDMA, suggesting hallucinogenic-like properties. In silico modeling indicated similarities between these NBPEAs, MDMA, and ketamine, implicating serotonin release, calcium channel activity, and serotonin receptor involvement.