Psilocybin is a psychedelic agent with 5-HT2A agonist properties An open-label study in 12 patients showed that psilocybin produced improvement rapid improvement that lasted up to three months in half the group There are practical challenges around research and potential therapeutic use. Further research seems worthwhile.
5-MeO-DMT is a psychoactive substance found in high concentrations in the bufotoxin of the Colorado River Toad (Bufo alvarius). Emerging evidence suggests that vaporized 5-MeO-DMT may occasion mystical experiences of comparable intensity to those occasioned by more widely studied psychedelics such as psilocybin, but no empirical study has tested this hypothesis. Data was obtained from 20...
En mai 1957, une série d’articles parus dans le magazine Life et nombre de grands journaux nationaux annoncent la « découverte » de « champignons magiques » hallucinogènes par un couple d’aventuriers. Robert Gordon Wasson et Valentina Wasson racontent comment ils ont fait usage du champignon dans un village indigène, un récit qui intensifie le tourisme de la drogue au Mexique de même que les...
Aromatic l-amino acid decarboxylases (AAADs) are a phylogenetically diverse group of enzymes responsible for the decarboxylation of aromatic amino acid substrates into their corresponding aromatic arylalkylamines. AAADs have been extensively studied in mammals and plants as they catalyze the first step in the production of neurotransmitters and bioactive phytochemicals, respectively. Unlike...
Background: Evidence suggests that classical psychedelics can promote enduring changes in personality, attitudes and optimism, as well as improvements in mental health outcomes. Aim: To investigate the effects of a composite intervention, involving psilocybin, on pessimism biases in patients with treatment-resistant depression (TRD). Methods: Patients with TRD (n = 15) and matched, untreated...
Classic psychedelics (serotonin 2A receptor agonists) and dissociative hallucinogens (NMDA receptor antagonists), though differing in pharmacology, may share neuropsychological effects. These drugs, however, have undergone limited direct comparison. This report presents data from a double-blind, placebo-controlled within-subjects study comparing the neuropsychological effects of multiple doses...
Background: Lysergic acid diethylamide (LSD) and psilocybin are serotonergic hallucinogens that are used primarily for recreational abuse. Small studies evaluated the efficacy of LSD and psilocybin for several psychiatric conditions. There are limited safety or toxicity data for either of these substances, especially in large populations. Methods: This was a retrospective analysis of...
Abstract Psilocybin is a psychoactive compound with clinical applications produced by dozens of mushroom species 1 . There has been a longstanding interest in psilocybin research with regard to treatment for addiction 2 , depression 3 , and end-of-life suffering 4 . However, until recently very little was known about psilocybin biosynthesis and its ecological role. Here we confirm and refine...
Abstract Brain activity can be understood as the exploration of a dynamical landscape of activity configurations over both space and time. This dynamical landscape may be defined in terms of spontaneous transitions within a repertoire of discrete metastable states of functional connectivity (FC), which underlie different mental processes. However, it remains unclear how the brain’s dynamical...
Abstract The fungal genus Psilocybe and other genera comprise numerous mushroom species that biosynthesize psilocybin (4‐phosphoryloxy‐ N , N ‐dimethyltryptamine). It represents the prodrug to its dephosphorylated psychotropic analogue, psilocin. The colloquial term “magic mushrooms” for these fungi alludes to their hallucinogenic effects and to their use as recreational drugs. However,...