Cephalalgia ReportsMay 1, 2025Jonathan A. Leighton, Chieh Grace Lau, Aisha Savdo et al.2 citations
Background Cluster headache is an excruciating condition for which standard treatments are usually insufficient. Evidence has accumulated that serotonergic psychedelic indoleamines including psilocybin and LSD can be effective in preventing attacks. Methods In this case series, nine patients with episodic and chronic cluster headache that didn’t respond to conventional treatments were treated...
Chronic pain is a debilitating disease with current treatments lacking efficacy and safety, therefore discovery of new treatments is crucial. Initial studies suggest that psychedelics may be feasible for targeting pain, however clinical and preclinical controlled studies are necessary to further investigate that possibility. In this study we assessed the effects of two classical psychedelics...
Neurobiology of StressMay 1, 2025Alanna Kit, Kate Conway, Savannah Makarowski et al.5 citations
There is growing interest in exploring the therapeutic potential and mechanisms of action of psilocybin on stress-related neuropsychiatric disorders, including depression, generalized anxiety disorder (GAD), post-traumatic stress disorder (PTSD), obsessive-compulsive disorder (OCD), addiction, and disordered eating. Despite promising progressions in preclinical and clinical research, the...
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 implicated in the etiology of...
Serotonin (5-HT) receptors and N-methyl-D-aspartate receptors (NMDARs) have both been implicated in stress-induced psychiatric disorders. However, there is a paucity of studies evaluating the effectiveness of novel combinatorial pharmacological treatments to treat stress-related disorders. Here, we evaluated whether administration of combinatorial (R,S)-ketamine, an NMDAR antagonist and Food...
Emerging evidence suggests that psychedelic experiences have the potential to change attitudes towards death and reduce death anxiety. Improved attitudes towards death, specifically reduced death anxiety, are of psychological significance for clinical and non-clinical populations alike. Despite this emerging evidence, little is known about the phenomenology of this potential outcome. To provide...
Psychedelics offer a profound window into the human brain through their robust effects on perception, subjective experience, and brain activity patterns. The serotonergic psychedelic N,N-dimethyltryptamine (DMT) induces a profoundly immersive altered state of consciousness lasting under 20 min, allowing the entire experience to be captured during a single functional magnetic resonance imaging...
Abstract Background and Hypothesis Visual hallucinations (VH) are a core symptom of both Lewy body diseases (LBDs; eg, Parkinson’s disease and dementia with Lewy bodies) and serotonergic psychedelics (SPs; eg, psilocybin and mescaline). While these conditions differ in etiology, overlapping phenomenology, and neural mechanisms suggest shared pathways. This review explores similarities and...
Objective: Psychedelics are able to trigger highly intense and profound alterations in self-consciousness, perception, affective, and cognitive processes. Indeed, recent studies show that ketamine and psilocybin could be used as fast-acting antidepressants. However, the molecular and neurochemical mechanisms of these psychedelics and their actions at the level of diverse brain structures...
Dextromethorphan (DXM) misuse, particularly among young individuals, has risen owing to its euphoric and hallucinogenic effects. High-dose DXM ingestion can trigger serotonin syndrome, a condition characterized by psychiatric, neuromuscular, and autonomic symptoms. In severe cases, serotonin syndrome may result in rhabdomyolysis and acute kidney injury (AKI). However, reports of severe...
We aimed to investigate whether psilocin, the bioactive metabolite of the well-known psychedelic, psilocybin, may have antipruritic effects in mice by interfering with the kynurenine pathway and interacting with 5-HT2A receptors. Eight mice were randomly assigned to each of the study groups receiving either normal saline, compound 48/80, psilocin (0.3, 1, and 3 mg/kg), or psilocin (1 mg/kg) +...
New synthetic tryptamine derivatives have emerged in the underground market. They act on serotonin receptors mimicking the effects of hallucinogenic drugs such as DOM. The DEA has identified three tryptamine derivatives of concern, 5-MeO-DBT, 5-Cl-DMT, and 4-OH-MiPT. Swiss Webster mice were tested for locomotor activity. Discriminative stimulus effects were tested in male Sprague-Dawley rats...
Medical treatment for behavioral disorders such as anxiety, depression, and post-traumatic stress disorder (PTSD) represent emerging challenges in the field and have been a subject of studies for a long time. Available therapeutics include selective serotonin reuptake inhibitors (SSRIs), Monoamine oxidase inhibitors (MAOIs), tricyclics, etc. Nevertheless, recent studies have identified a...
Psychedelic-assisted therapy could transform treating psychiatric illness, but harms from exacerbating substance use disorder (SUD) among adults with psychiatric illness using psychedelics have not been studied. A cross-sectional survey in the US was used to test whether Drug Abuse Screening Test scores (DAST-10, validated instrument predicting SUD) were more severe when psychiatric illnesses...
Background: Classic psychedelics such as psilocybin and lysergic acid diethylamide are anecdotally associated with the phenomenon of “psychedelic afterglow,” a set of predominantly pleasant, temporary psychological effects reported after the acute effects have subsided. Since post-acute effects are crucial for the therapeutic use of psychedelics, an instrument to systematically assess subacute...
In our ongoing battle against the coronavirus 2019 (COVID-19) pandemic, a major challenge is the enduring symptoms that continue after acute infection. Also known as Long COVID, post-COVID-19 syndrome (PCS) often comes with debilitating symptoms like fatigue, disordered sleep, olfactory dysfunction, and cognitive issues ("brain fog"). Currently, there are no approved treatments for PCS. Recent...
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...
Provided herein are novel compounds as 5-HT2A receptor modulators, pharmaceutical compositions, use of such compounds in treating psychiatric and neurological disorders and processes for preparing such compounds.
Abstract Xylazine, traditionally used as a veterinary sedative, has recently emerged as a new psychoactive substance, being typically ingested in combination with fentanyl derivatives and hence raising significant public health concerns. Despite its increasing prevalence, little is known about its molecular interactions with human neuroreceptors, specifically the serotonin 7 (5‐HT 7 R) and...