BACKGROUND: The claustrum, a subcortical structure densely expressing 5-hydroxytryptamine 2 A (5-HT2A) receptors, has been implicated in sensory integration, emotional regulation, salience, and attention. Despite its hypothesized involvement in the effects of serotonergic psychedelics, the neurochemical impact of these substances on claustral neurotransmissi...
Anxiety disorders are chronic health conditions affecting the quality of life of millions of people. Psilocin, the active moiety of psilocybin, provides an anxiolytic effect; however, when orally administered as psilocybin, it only offers a moderate level of bioavailability and less predictable pharmacokinetics, potentially making effects after absorption va...
Current neuroscience research calls into question the binary model of anesthesia as a state of consciousness shifted by unconsciousness, replacing it with an idea of consciousness as a continuum created by interactions between large-scale cortex and subcortical regions.Meanwhile, psychedelic drugs are making a comeback as potential treatments for treatment-r...
Background: Major depressive disorder is a prevalent psychological condition that is characterized by sustained low mood, dysfunction and biological dysregulation. Depression can be treated with cognitive behavioral therapy, and newer studies indicate that psilocybin-based therapy may improve depressive symptoms when used under supervised psychological suppo...
Tobacco use remains a leading cause of preventable morbidity and mortality worldwide, and current smoking cessation treatments are limited by low long-term efficacy. An interplay between positive and negative reinforcement drives high relapse rates. Psychedelic compounds, particularly psilocybin, have shown promising clinical outcomes for smoking cessation, ...
INTRODUCTION: Sertonergic psychedelics LSD, psilocin and DMT, have been shown to hold a great potential for treatment of various neuropsychiatric conditions, such as major depressive disorder, addiction, and end-of-life anxiety. Effects of these substances on neuronal activity and plasticity have been demonstrated, however, better understanding of their mech...
Psilocybe cubensis mushrooms are typically not consumed for their nutritional value. The main reason people ingest these mushrooms is for their psychoactive effects. Recently, there has been growing interest in the potential therapeutic applications of psilocybin-containing mushrooms in a range of psychiatric conditions, including depression, anxiety disorde...
This thesis is concerned with the serotonin system and its influence on sleep and memory consolidation. Psilocybin, a neuroplastic serotonergic psychedelic, has recently been investigated mainly for its therapeutic potential. Sleep changes associated with administration of the nonselective serotonin receptor agonist psilocybin and the selective 5-HT2A recept...
Psychedelics are a group of substances within the heterogeneous class of hallucinogenic drugs. Via binding to the serotonin (5-HT) 2A receptor, psychedelics exert profound alterations in various mental domains, including sensation, cognition, emotions, and self-perception. Psychedelics comprise phenethylamines (e.g., mescaline), tryptamines (e.g., psilocybin...
BACKGROUND: Psilocybin has shown rapid and sustained antidepressant effects in patients with major depressive disorder, yet the neurobiological mechanisms underlying these outcomes remain unclear. AIMS: receptor occupancy (RO) achieved after administration of psilocybin and its effects on behavior and markers of neuroplasticity in mice. METHODS: H]MDL-100,90...
Psilocybin-containing mushrooms, commonly known as magic mushrooms, strongly affect mood, cognition, and behavior. Psilocybe azurescens is a species of psilocybin mushrooms that contains the main active compounds psilocybin and psilocin. Psilocybin mushrooms have been used since ancient times to improve the quality of life. However, their adverse effects hav...
Abstract Recent clinical breakthroughs hold great promise for the application of psilocybin in the treatments of psychological disorders, such as depression, addiction, and obsessive-compulsive disorder. Psilocybin is a psychedelic whose metabolite, psilocin, is a 5-HT2A receptor agonist. Nevertheless, the underlying mechanisms for the effects of psilocybin ...
Major depressive disorder (MDD) continues to pose a major therapeutic challenge due to its clinical heterogeneity. This chapter looks at the development of antidepressant treatments, starting with early interventions such as electroconvulsive therapy (ECT), monoamine oxidase inhibitors (MAOIs) and tricyclic antidepressants (TCAs). Although these treatments t...
Depression is a complex and globally prevalent mental disorder, for which conventional antidepressant medications face limitations such as delayed onset and insufficient efficacy. Classic psychedelics, most notably psilocybin, have recently emerged as promising candidates for treatment of depression and demonstrated rapid, robust, and sustained antidepressan...
OBJECTIVE: Psychedelics such as psilocybin are known for their hallucinogenic properties and have also been reported to produce long-lasting therapeutic effects in depression and possibly also other psychiatric disorders. Several lines of evidence suggest that psilocybin exerts its effects through activation of 5-HT2A receptors located postsynaptically to se...
Psilocybin, a naturally occurring tryptamine alkaloid found in over 200 species of fungi, has emerged as a focal point in the modern revival of psychedelic science. Once relegated to the margins of psychopharmacology due to its association with counterculture and strict legal restrictions, psilocybin is now undergoing a scientific renaissance. This transform...
Introduction:Psilocybin, a classical psychedelic, has shown to produce persistent antidepressant effects, including in patients with treatment-resistant depression. In clinical practice, it is common to coprescribe benzodiazepines (BZDs) alongside antidepressants. However, our preliminary study indicated that preadministration of lorazepam diminished the ant...
Emerging psychedelic therapeutics increasingly rely on mechanistic precision, receptor selectivity, and pharmacokinetic control. Recent inventions introduce simplified iboga analogs with tunable polypharmacology, real-time EEG biomarkers that individualize psilocybin dosing, and standardized harmine-DMT ratios with high bioavailability. Together, these innov...
Classical psychedelics, like lysergic acid diethylamide (LSD), N,N-dimethyltryptamine (DMT), and psilocybin, can alter perception, emotion, and cognition, and have shown promise as 're-purposed' treatments for some psychiatric disorders. Recent trials have, e.g., demonstrated rapid and sustained symptom relief in treatment-resistant depression. While promisi...
