Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental condition characterized by persistent deficits in social communication and interaction, restricted and repetitive patterns of behavior, and sensory processing alterations, frequently accompanied by anxiety, emotional dysregulation, and other psychiatric comorbidities. Despite advances in be...
BACKGROUND: Major depressive disorder is one of the most debilitating psychiatric disorders worldwide. First-line treatments such as selective serotonin reuptake inhibitors have significant limitations, including delayed onset of therapeutic effects and treatment resistance in about 30% of patients. Increasing evidence suggests that acute administration of s...
Microdosing and related low-dose psychoactive practices have become increasingly visible in discussions of mental health, cognition, creativity, emotional regulation, pain, sleep, spirituality, and psychological flexibility. However, the term microdosing is often used as if it referred to a single pharmacological phenomenon. More precisely, it describes a lo...
Treatment-resistant depression (TRD) remains a major clinical challenge and is typically defined as the persistence of depressive symptoms despite at least two adequate antidepressant trials. Individuals with TRD experience substantial morbidity, impaired functioning, and elevated suicide risk, highlighting the need for therapeutic strategies beyond incremen...
Psychedelics have re-emerged as promising therapeutics for neuropsychiatric disorders, including depression, anxiety, post-traumatic stress disorder, and substance use disorders. While their beneficial effects are largely attributed to serotonin 2A (5-HT2A) receptor activation, psychedelics exhibit substantial diversity in chemical structure, receptor bindin...
Introduction: Contemporary psychiatry is grappling with a profound stagnation in innovation. It is primarily relying on the chronic management of symptoms through traditional daily-dose pharmacotherapy. The emergence of psychedelics and ketamine marks a significant departure from this model. It is offering rapid-acting, interventional alternatives that targe...
Twenty healthy adults (≥21 years old) will be enrolled to evaluate the efficacy of a single oral dose of psilocybin (25 mg) administered with or without pretreatment using oral pimavanserin (34 mg) or placebo. Outcome assessments will occur at 1 week and 1 month following psilocybin administration. The purpose of this study is to clarify the receptor-level m...
Psychedelic drugs are poised to become mainstream treatments, yet we lack a circuit-level account of how they reshape brain activity. Emerging evidence suggests that multiple psychedelic compounds modulate activity in the brain's default mode network (DMN), often interpreted as either increased or decreased bottom-up hierarchical processing. Most imaging stu...
Limit: 5000 characters. Psilocybin, the chemical component of "magic mushrooms", has been administered with psychotherapy in several randomized clinical trials (RCTs) showing large and sustained antidepressant effects. In healthy volunteers, the psychedelic effects of psilocybin have been shown to be blocked by administration of certain medications such as r...
ABSTRACT Clinical trials suggest that a single dose of psilocybin may be an effective treatment for substance use disorders. Choice impulsivity is a value-based decision-making bias that predicts drug-intake escalation and is commonly associated with substance use disorders. The dorsomedial prefrontal cortex regulates choice impulsivity and is enriched with ...
Traumatic brain injury (TBI) causes persistent neurobehavioral deficits and increases the risk of psychiatric disorders, including depression, anxiety, and cognitive dysfunction linked to disrupted neuroplasticity, neuroinflammation, and serotonergic (5-HT) signaling. No effective pharmacotherapies exist for chronic TBI. Psilocybin, a psychedelic 5-HT2A rece...
Background: The impact of classic psychedelics (5-HT2A receptor agonists) on personality traits has been studied for decades, and it has been hypothesized that the mechanisms underlying these changes are linked to agonism at cortical serotonergic 5-HT2A receptors. However, research results are contradictory. Therefore, the present paper aims to systematicall...
Abstract Background and Aims Psilocybin-assisted psychotherapy (PAP) is a novel, transdiagnostic treatment in which the 5-HT2A receptor agonist psilocybin is combined with psychotherapy. Studies to date have evaluated PAP's effects on depression, substance use, and end-of-life adjustment. Relatively less attention has been given to its effects on anxiety sym...
Psilocin is a psychedelic indole alkaloid and one of the major human metabolites of its phosphorylated precursor, psilocybin. Psilocin binds to the serotonin receptor, 5-HT2A, and dose-dependently induces hallucinogenic effects stronger than psilocybin. As a result, psilocin has been a drug of interest in the analytical toxicology community for years. In viv...
Background and objective: Anxiety disorders are among the most prevalent psychiatric disorders worldwide and affect all age groups. Current pharmacological treatments, such as selective serotonergic reuptake inhibitors (SSRI’s) and benzodiazepines, have limitations in terms of adverse effects and efficacy, which highlights the need for alternative therapies....
Psilocybin, the chemical component of "magic mushrooms", has been administered with psychotherapy in several randomized clinical trials (RCTs) showing large and sustained antidepressant effects. There is interest to see if similar effects may be provided in those with obsessive compulsive disorder (OCD). The purpose of this study is to evaluate the safety, f...
Psilocybin has emerged as a promising therapeutic agent for psychiatric disorders characterised by cognitive rigidity and disrupted reward processing, including anorexia nervosa. While its pro-cognitive effects have been mechanistically probed almost exclusively through serotonin receptor subtype antagonism, the downstream contributions of dopaminergic syste...
Introduction and Objective.Treatment-resistant depression (TRD) remains a major clinical challenge affecting patients who fail to respond to at least two adequate antidepressant trials.The development of rapid-acting interventions targeting non-monoaminergic pathways has introduced new therapeutic possibilities.The aim of the review is to critically examine ...
