Neuropsychopharmacology
July 18, 2026
James J Gattuso, Ahmed Kamal, Jennyfer M. Payet et al.
Abstract Psilocybin is a serotonergic psychedelic drug with emerging therapeutic applications, yet its actions under glutamatergic dysfunction, and relevance to schizophrenia and associated psychiatric disorders, remain unclear. We examined the acute and long-lasting effects of psilocybin (1 mg/kg, intraperitoneal) on behavioral and neural outcomes in the metabotropic glutamate receptor 5...
European Journal of Neuroscience
December 1, 2025
Nina Kleditzsch, James J Gattuso, Anthony J. Hannan et al.
ABSTRACT The psychedelic psilocybin has gained popularity in recent years as a therapy for treatment‐resistant depression and has been reported to reduce symptoms of depression and anxiety. Psilocybin's active metabolite, psilocin, possesses a binding affinity for serotonin receptors as well as for the serotonin transporter (5‐HTT). We recently reported that in contrast to wild‐type mice,...
Psychedelics.
October 28, 2025
James J Gattuso, Bilgenur Bezcioglu, Carey Wilson et al.
1 citation
Psilocybin is a serotonergic psychedelic with growing evidence for efficacy in mood disorders, and its therapeutic potential in obsessive—compulsive disorder (OCD) and related conditions is increasingly recognised but remains understudied. We systematically evaluated clinical and preclinical evidence on psilocybin's effects on obsessive and compulsive behaviours with attention to translational...
Neuropharmacology
August 21, 2025
James J Gattuso, Geraldine Kong, Bilgenur Bezcioglu et al.
7 citations
Psilocybin, a serotonergic compound that produces psychedelic effects primarily through activation of the 5-HT2A receptor, has shown promise in treating neuropsychiatric conditions, including obsessive-compulsive disorder (OCD). However, the effects of chronic psilocybin administration on gut function, microbiota, and behavioural phenotypes remain understudied. The present study investigated...
The International Journal of Neuropsychopharmacology
August 1, 2025
Thibault Renoir, James J Gattuso, Bilgenur Bezcioglu et al.
Abstract Background The evident limitations of current treatments for depression, anxiety and obsessive-compulsive disorder (OCD), underscore the need for a paradigm shift in how we understand and treat these disorders. There is enormous public and research enthusiasm for the potential that psychedelic drugs like psilocybin, the psychoactive compound produced by “magic mushrooms” will drive a...
Molecular Psychiatry
April 6, 2025
James J Gattuso, Carey Wilson, Anthony J. Hannan et al.
2 citations
The growing interest in psychedelic compounds for psychiatric disorders highlights the importance of well-designed preclinical studies [ 1 , 2 ]. In this context, Brownstein et al. [ 3 ] recently reported evidence of potential therapeutic benefits of psychedelic mushroom extract (PME) in the SAPAP3 knockout (KO) mouse model of obsessive-compulsive disorder (OCD)-like behaviours.
European Journal of Pharmacology
March 15, 2025
James J Gattuso, Carey Wilson, Shanshan Li et al.
16 citations
Psilocybin is a serotonergic psychedelic with therapeutic potential for several neuropsychiatric disorders, including depression and anxiety disorders. Serotonin transporter (5-HTT) knockout mice (KO) are a well-validated mouse model of anxiety/depression and are relevant to both chronic treatment with serotonin transporter reuptake inhibitors (SSRIs) and polymorphisms in the serotonin...
Neuropharmacology
2025
James J Gattuso, Carey Wilson, Anthony J. Hannan et al.
10 citations
Psilocybin is a serotonergic psychedelic compound which shows promise for treating compulsive behaviours. This is particularly pertinent as compulsive disorders require research into new pharmacological treatment options as the current frontline treatments such as selective serotonin reuptake inhibitors, require chronic administration, have significant side effects, and leave almost half of the...
Journal of Neurochemistry
November 29, 2023
James J Gattuso, Carey Wilson, Anthony J. Hannan et al.
18 citations
Abstract Psilocybin is the main psychoactive compound found in hallucinogenic/magic mushrooms and can bind to both serotonergic and tropomyosin receptor kinase b (TrkB) receptors. Psilocybin has begun to show efficacy for a range of neuropsychiatric conditions, including treatment‐resistant depression and anxiety disorders; however, neurobiological mechanisms are still being elucidated....
Neuropharmacology
February 12, 2020
C. Wilson, Shanshan Li, Anthony J. Hannan et al.
Traditional monoaminergic treatments of depression frequently exhibit suboptimal tolerability and effectiveness. The 'short' (s) allele variant of 5-HTTLPR is known to compromise transcriptional efficacy of the serotonin transporter (5-HTT) and can reduce treatment response to traditional antidepressants (e.g. selective serotonin reuptake inhibitors or SSRIs). This study sought to establish the...