The goal of this study is to learn how psilocybin delivered with mindfulness-based therapy may help symptoms of posttraumatic stress disorder (PTSD). This is an assessor-blinded, randomized, controlled study in participants with PTSD. The study will investigate the changes in brain activity, connectivity, and microstructural neuroplasticity assessed using EE...
PsiConnect is a large-scale neuroimaging study designed to investigate context-dependent neural and subjective effects of psilocybin using multimodal neuroimaging. It combines functional, structural, and diffusion-weighted MRI with EEG to examine brain activity in 62 participants before and after a 19 mg dose of psilocybin. The design includes resting-state ...
Non-human models, including fish, are increasingly important for investigating how pharmacological agents such as hallucinogens influence behavior, physiology, and cellular processes. These models help to reveal underlying mechanisms and to support assessments of toxicological impact, efficacy, and safety. In this study, we used isogenic lineages of the amph...
Aging is associated with chronic, low-grade inflammation (“inflammaging”), which contributes to neuropsychiatric and neurodegenerative disorders such as depression, Alzheimer’s disease, and Parkinson’s disease. Conventional pharmacotherapies often provide limited benefit in older adults and are further complicated by polypharmacy and drug-drug interactions. ...
In April 2024, FSQ Forensic Chemists attended Queensland’s largest mushroom growing operation. Seized items included: 219 50 L plastic tubs of mushrooms in growth medium, bags of dried mushroom material, sterilised grain bags and spores in liquid. In consultation with QPS, six exhibits were selected for illicit drug analysis. Fresh mushrooms were harvested a...
Background: Psilocybin is a psychoactive compound found in hallucinogenic mushrooms and is rapidly dephosphorylated in vivo to psilocin, its pharmacologically active metabolite. Despite the growing clinical and scientific interest in these substances, information regarding their interaction with cytochrome P450 (CYP450) enzymes remains scarce, raising concer...
In Canada, the use of both prescription medications and psychedelics has become increasingly prevalent. As of 2022, approximately 16.5% of Canadians-about 6.3 million individuals-were prescribed at least one antidepressant, with fluoxetine remaining one of the most commonly used options (IQVIA, 2023). Benzodiazepine use, including drugs like alprazolam, rang...
The therapeutic potential of psilocybin in treating psychiatric disorders has gained attention recently. While most research has focused on isolated psilocybin, evidence suggests that whole mushroom extracts exhibit greater efficacy, implicating a possible entourage effect of additional bioactive compounds. This study aimed to elucidate the holistic neuropha...
Psilocybin is a psychoactive tryptamine produced by a phylogenetically discontinuous yet ecologically diverse subset of fungi. Despite decades of chemical, pharmacological, and ethnobiological research, the evolutionary forces driving the emergence and persistence of this compound remain insufficiently explained. Recent hypotheses proposing that psilocybin e...
Psilocybin is a naturally occurring psychedelic compound with potential antidepressant effects. Although it has long been used by humans, primarily for recreational purposes, the molecular mechanisms underlying its actions remain incompletely understood. Here, we examined the acute effects of psilocin, the active metabolite of psilocybin, on excitatory neuro...
Panaeolus sensu lato is a group of hallucinogenic mushrooms commonly found on dung, in pasture areas, grasslands, and forests. Previous studies indicated that the Panaeolus s.l. clade (panaeo-clade) could be ranked as a family ( Galeropsidaceae ), pending further evidence. In this study, based on phylogenomic, multigene phylogenetic, molecular clock, and mor...
As psychedelics are being investigated for more medical indications, it has become important to characterize the adverse effects and pharmacological interactions with these medications. This chapter will summarize what is known about the toxicology and drug-drug interactions for classic psychedelics, such as LSD, psilocybin, DMT, 5-MeO-DMT, mescaline, 2C-B, ...
Psilocybin is a classic psychedelic drug known to alter subjective experience and elicit long-term psychological changes, enhancing cognitive flexibility and reducing rigid self-related beliefs. Combined with compassion motivational primes that involve generating mental representations of compassion, it may increase the potential for activating the care-affi...
The global demographic shift toward aging populations has intensified the need for innovative therapeutic interventions targeting late-life mental health conditions, notably depression, loneliness, and existential distress. Traditional pharmacological treatments often exhibit limited efficacy and poor tolerability in older patients, primarily due to age-rela...
Alcohol use disorder (AUD) is a highly prevalent disorder with limited therapeutic options. The central amygdala (CeA) is a critical brain region as dysregulation within the CeA and the corticotropin-releasing factor (CRF) system are associated with AUD pathology. CeA CRF1 receptors regulate alcohol drinking and have served as a therapeutic target in alcohol...
Psilocybin, a compound found in Psilocybe mushrooms, is emerging as a promising treatment for neurodegenerative and psychiatric disorders, including major depressive disorder. Its potential therapeutic effects stem from promoting neuroprotection, neurogenesis, and neuroplasticity, key factors in brain health. Psilocybin could help combat mild neurodegenerati...
RATIONALE: The head twitch response (HTR) is a spontaneously occurring behavior in mice that is increased in frequency by serotonergic psychedelics. The mouse HTR is often used as a proxy for psychedelic-like drug effects, but limited information is available about sex differences in HTRs evoked by various classes of psychedelics (i.e., phenethylamines, lyse...
Abstract Music is integral to Psilocybin-assisted psychotherapy (PAP), believed to enhance therapeutic outcomes by structuring experiences and facilitating emotional expression. However, the effects of conducting PAP without music are underexplored. This study examines the experiences of two breast cancer patients undergoing psilocybin therapy under Canada's...
Serotonin 5-HT2A receptors were one of the first serotonin receptors to be pharmacologically characterized. In mammals, they are expressed throughout the body in nearly every cell and tissue type, with the highest density in cortical layer V of the brain. They are involved in several aspects of normal physiological processes and behaviors and have been impli...
