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https://www.readbyqxmd.com/read/27908258/neurotoxicity-induced-by-mephedrone-an-up-to-date-review
#1
Flaminia Pantano, Roberta Tittarelli, Giulio Mannocchi, Roberta Pacifici, Alessandro di Luca, Francesco Paolo Busardò, Enrico Marinelli
Mephedrone is a β-ketoamphetamine belonging to the family of synthetic cathinones, an emerging class of designer drugs known for their hallucinogenic and psychostimulant properties as well as for their abuse potential. The aim of this review was to examine the emerging scientific literature on the possible mephedrone-induced neurotoxicity, yet not well defined due to the limited number of experimental studies, mainly carried on animal models. Relevant scientific articles were identified from international literature databases (Medline, Scopus, etc...
November 30, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27903793/the-serotonin-5-ht2c-receptor-and-the-non-addictive-nature-of-classic-hallucinogens
#2
REVIEW
Clinton E Canal, Kevin S Murnane
Classic hallucinogens share pharmacology as serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptor agonists. Unique among most other Schedule 1 drugs, they are generally non-addictive and can be effective tools in the treatment of addiction. Mechanisms underlying these attributes are largely unknown. However, many preclinical studies show that 5-HT2C agonists counteract the addictive effects of drugs from several classes, suggesting this pharmacological property of classic hallucinogens may be significant. Drawing from a comprehensive analysis of preclinical behavior, neuroanatomy, and neurochemistry studies, this review builds rationale for this hypothesis, and also proposes a testable, neurobiological framework...
November 15, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27900674/serotonergic-hallucinogen-induced-visual-perceptual-alterations
#3
Michael Kometer, Franz X Vollenweider
Serotonergic hallucinogens, such as lysergic acid diethylamide (LSD), psilocybin, and N,N-dimethyltryptamine (DMT), are famous for their capacity to temporally and profoundly alter an individual's visual experiences. These visual alterations show consistent attributes despite large inter- and intra-individual variances. Many reports document a common perception of colors as more saturated, with increased brightness and contrast in the environment ("Visual Intensifications"). Environmental objects might be altered in size ("Visual illusions") or take on a modified and special meaning for the subject ("Altered self-reference")...
November 30, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27896660/ayahuasca-exposure-descriptive-analysis-of-calls-to-us-poison-control-centers-from-2005-to-2015
#4
C William Heise, Daniel E Brooks
BACKGROUND: Ayahuasca is a hallucinogenic plant preparation which usually contains the vine Banisteriopsis caapi and the shrub Psychotria viridis. This tea originates from the Amazon Basin where it is used in religious ceremonies. Because interest in these religious groups spreading as well as awareness of use of ayahuasca for therapeutic and recreational purposes, its use is increasing. Banisteriopsis caapi is rich in β-carbolines, especially harmine, tetrahydroharmine and harmaline, which have monoamine oxidase inhibiting (MAOI) activity...
November 28, 2016: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/27886063/d-lysergic-acid-diethylamide-lsd-as-a-model-of-psychosis-mechanism-of-action-and-pharmacology
#5
REVIEW
Danilo De Gregorio, Stefano Comai, Luca Posa, Gabriella Gobbi
d-Lysergic Acid Diethylamide (LSD) is known for its hallucinogenic properties and psychotic-like symptoms, especially at high doses. It is indeed used as a pharmacological model of psychosis in preclinical research. The goal of this review was to understand the mechanism of action of psychotic-like effects of LSD. We searched Pubmed, Web of Science, Scopus, Google Scholar and articles' reference lists for preclinical studies regarding the mechanism of action involved in the psychotic-like effects induced by LSD...
November 23, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27856683/the-challenging-experience-questionnaire-characterization-of-challenging-experiences-with-psilocybin-mushrooms
#6
Frederick S Barrett, Matthew P Bradstreet, Jeannie-Marie S Leoutsakos, Matthew W Johnson, Roland R Griffiths
Acute adverse psychological reactions to classic hallucinogens ("bad trips" or "challenging experiences"), while usually benign with proper screening, preparation, and support in controlled settings, remain a safety concern in uncontrolled settings (such as illicit use contexts). Anecdotal and case reports suggest potential adverse acute symptoms including affective (panic, depressed mood), cognitive (confusion, feelings of losing sanity), and somatic (nausea, heart palpitation) symptoms. Responses to items from several hallucinogen-sensitive questionnaires (Hallucinogen Rating Scale, the States of Consciousness Questionnaire, and the Five-Dimensional Altered States of Consciousness questionnaire) in an Internet survey of challenging experiences with the classic hallucinogen psilocybin were used to construct and validate a Challenging Experience Questionnaire...
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27834144/evolutionary-considerations-on-the-emerging-subculture-of-the-e-psychonauts-and-the-novel-psychoactive-substances-a-comeback-to-the-shamanism
#7
Laura Orsolini, Paul St John-Smith, Daniel McQueen, Duccio Papanti, John Corkery, Fabrizio Schifano
BACKGROUND: Evolutionary research on drug abuse has hitherto been restricted to proximate studies, considering aetiology, mechanism, and ontogeny. However, in order to explain the recent emergency of a new behavioral pattern (e.g. 'the e-psychonaut style') of novel psychoactive substances' (NPS) intake, a complementary evolutionary model may be needed. OBJECTIVE: A range of evolutionary interpretations on the 'psychonaut style' and the recent emergency of NPS was here considered...
November 11, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27822679/a-review-of-hallucinogen-persisting-perception-disorder-hppd-and-an-exploratory-study-of-subjects-claiming-symptoms-of-hppd
#8
John H Halpern, Arturo G Lerner, Torsten Passie
Hallucinogen persisting perception disorder (HPPD) is rarely encountered in clinical settings. It is described as a re-experiencing of some perceptual distortions induced while intoxicated and suggested to subsequently cause functional impairment or anxiety. Two forms exist: Type 1, which are brief "flashbacks," and Type 2 claimed to be chronic, waxing, and waning over months to years. A review of HPPD is presented. In addition, data from a comprehensive survey of 20 subjects reporting Type-2 HPPD-like symptoms are presented and evaluated...
November 8, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27816502/dysregulated-corticostriatal-activity-in-open-field-behavior-and-the-head-twitch-response-induced-by-the-hallucinogen-2-5-dimethoxy-4-iodoamphetamine
#9
Claudia Rangel-Barajas, Ana María Estrada-Sánchez, Scott J Barton, Robert R Luedtke, George V Rebec
The substituted amphetamine, 2,5-dimethoxy-4-iodoamphetamine (DOI), is a hallucinogen that has been used to model a variety of psychiatric conditions. Here, we studied the effect of DOI on neural activity recorded simultaneously in the primary motor cortex (M1) and dorsal striatum of freely behaving FvB/N mice. DOI significantly decreased the firing rate of individually isolated neurons in M1 and dorsal striatum relative to pre-drug baseline. It also induced a bursting pattern of activity by increasing both the number of spikes within a burst and burst duration...
November 2, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27810775/chemogenomics-knowledgebase-and-systems-pharmacology-for-hallucinogen-target-identification-salvinorin-a-as-a-case-study
#10
Xiaomeng Xu, Shifan Ma, Zhiwei Feng, Guanxing Hu, Lirong Wang, Xiang-Qun Xie
Drug abuse is a serious problem worldwide. Recently, hallucinogens have been reported as a potential preventative and auxiliary therapy for substance abuse. However, the use of hallucinogens as a drug abuse treatment has potential risks, as the fundamental mechanisms of hallucinogens are not clear. So far, no scientific database is available for the mechanism research of hallucinogens. We constructed a hallucinogen-specific chemogenomics database by collecting chemicals, protein targets and pathways closely related to hallucinogens...
August 8, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/27810345/classical-hallucinogens-and-neuroimaging-a-systematic-review-of-human-studies-hallucinogens-and-neuroimaging
#11
REVIEW
Rafael G Dos Santos, Flávia L Osório, José Alexandre S Crippa, Jaime E C Hallak
Serotonergic hallucinogens produce alterations of perceptions, mood, and cognition, and have anxiolytic, antidepressant, and antiaddictive properties. These drugs act as agonists of frontocortical 5-HT2A receptors, but the neural basis of their effects are not well understood. Thus, we conducted a systematic review of neuroimaging studies analyzing the effects of serotonergic hallucinogens in man. Studies published in the PubMed, Lilacs, and SciELO databases until 12 April 2016 were included using the following keywords: "ayahuasca", "DMT", "psilocybin", "LSD", "mescaline" crossed one by one with the terms "mri", "fmri", "pet", "spect", "imaging" and "neuroimaging"...
October 31, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27797694/substance-use-trajectories-from-early-adolescence-through-the-transition-to-college
#12
Karen J Derefinko, Richard J Charnigo, Jessica R Peters, Zachary W Adams, Richard Milich, Donald R Lynam
OBJECTIVE: The transition to college is an important developmental period for the development of alcohol, marijuana, and hard drug (cocaine, opiates, inhalants, stimulants, hallucinogens, Ecstasy, club drugs) use. The current study explored specific changes in substance use patterns during and after the transition to college through the use of trajectory analyses. METHOD: Participants were 526 students who reported retrospectively and prospectively on their substance use from age 13 through the junior year of college...
November 2016: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/27776676/stressful-events-and-other-predictors-of-remission-from-drug-dependence-in-the-united-states-longitudinal-results-from-a-national-survey
#13
Sean Esteban McCabe, James A Cranford, Carol J Boyd
This study examined stressful life events and other predictors associated with remission from DSM-IV drug dependence involving cannabis, cocaine, hallucinogens, heroin, inhalants, non-heroin opioids, sedatives, stimulants, tranquilizers, or other drugs. Waves 1 and 2 of the National Epidemiologic Survey on Alcohol and Related Conditions were used to examine the prevalence and predictors of past-year remission status. Among U.S. adults with previous (i.e., prior-to-past-year) drug dependence (n=921) at baseline (wave 1), the prevalence of past-year remission status at wave 1 was: abstinence (60...
December 2016: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/27761334/the-ethnobotany-of-psychoactive-plant-use-a-phylogenetic-perspective
#14
Nashmiah Aid Alrashedy, Jeanmaire Molina
Psychoactive plants contain chemicals that presumably evolved as allelochemicals but target certain neuronal receptors when consumed by humans, altering perception, emotion and cognition. These plants have been used since ancient times as medicines and in the context of religious rituals for their various psychoactive effects (e.g., as hallucinogens, stimulants, sedatives). The ubiquity of psychoactive plants in various cultures motivates investigation of the commonalities among these plants, in which a phylogenetic framework may be insightful...
2016: PeerJ
https://www.readbyqxmd.com/read/27758012/total-synthesis-of-salvinorin-a
#15
Nathan Line, Aaron Burns, Sean Butler, Jerry Cashbolm, Craig J Forsyth
Salvinorin A (1) is natural product that in humans is a hallucinogen which binds the human κ-opioid receptor. A total synthesis has been developed that parlays L-(+)-tartaric acid into that of (-)-1 via an unprecedented allylic dithiane intramolecular Diels-Alder reaction to obtain the trans-decalin scaffold. Tsuji allylation set the C9 quaternary center and a late-stage stereoselective chiral ligand-assisted addition of a 3-titanium furan upon a C12 aldehyde / C17 methyl ester established the furanyl lactone moiety...
October 18, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27714429/alterations-of-consciousness-and-mystical-type-experiences-after-acute-lsd-in-humans
#16
Matthias E Liechti, Patrick C Dolder, Yasmin Schmid
RATIONALE: Lysergic acid diethylamide (LSD) is used recreationally and in clinical research. Acute mystical-type experiences that are acutely induced by hallucinogens are thought to contribute to their potential therapeutic effects. However, no data have been reported on LSD-induced mystical experiences and their relationship to alterations of consciousness. Additionally, LSD dose- and concentration-response functions with regard to alterations of consciousness are lacking. METHODS: We conducted two placebo-controlled, double-blind, cross-over studies using oral administration of 100 and 200 μg LSD in 24 and 16 subjects, respectively...
October 7, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27684102/psilocybin-for-treating-substance-use-disorders
#17
Bas T H de Veen, Arnt F A Schellekens, Michel M M Verheij, Judith R Homberg
INTRODUCTION: Evidence based treatment for Substance use disorders (SUD) includes psychotherapy and pharmacotherapy. However, these are only partially effective. Hallucinogens, such as psilocybin, may represent potential new treatment options for SUD. This review provides a summary of (human) studies on the putative therapeutic effects of psilocybin, and discusses the receptor systems, brain regions and cognitive and emotional processes mediating psilocybin's effects. Psilocybin's chemical structure is similar to that of serotonin...
August 12, 2016: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/27683542/the-endogenous-hallucinogen-and-trace-amine-n-n-dimethyltryptamine-dmt-displays-potent-protective-effects-against-hypoxia-via-sigma-1-receptor-activation-in-human-primary-ipsc-derived-cortical-neurons-and-microglia-like-immune-cells
#18
Attila Szabo, Attila Kovacs, Jordi Riba, Srdjan Djurovic, Eva Rajnavolgyi, Ede Frecska
N,N-dimethyltryptamine (DMT) is a potent endogenous hallucinogen present in the brain of humans and other mammals. Despite extensive research, its physiological role remains largely unknown. Recently, DMT has been found to activate the sigma-1 receptor (Sig-1R), an intracellular chaperone fulfilling an interface role between the endoplasmic reticulum (ER) and mitochondria. It ensures the correct transmission of ER stress into the nucleus resulting in the enhanced production of antistress and antioxidant proteins...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27670723/-purple-drank-a-dangerous-cocktail
#19
L Garcin, M Le Roch, C-A Agbessi, J-B Lobut, A Lecoeur, G Benoist
"Purple drank" is a dangerous hallucinogenic cocktail commonly used by teenagers, made popular by American rappers and social networks. It combines codeine-based cough syrup, antihistamines such as promethazine, and soda. Unknown by caregivers, it may be responsible for serious neuropsychological complications. We report the effects of this new risky behavior in three patients: a 14-year-old girl and her boyfriend, both found in an initial state of drowsiness, followed by hallucinations and anticholinergic toxidrome; and another teenager whose chronic use led to addiction with increasing doses...
September 23, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/27631575/multivariate-optimization-of-the-hollow-fibre-liquid-phase-microextraction-of-muscimol-in-human-urine-samples
#20
Somandla Ncube, Anna Poliwoda, Hlanganani Tutu, Piotr Wieczorek, Luke Chimuka
A liquid phase microextraction based on hollow fibre followed by liquid chromatographic determination was developed for the extraction and quantitation of the hallucinogenic muscimol from urine samples. Method applicability on polar hallucinogens was also tested on two alkaloids, a psychedelic hallucinogen, tryptamine and a polar amino acid, tryptophan which exists in its charged state in the entire pH range. A multivariate design of experiments was used in which a half fractional factorial approach was applied to screen six factors (donor phase pH, acceptor phase HCl concentration, carrier composition, stirring rate, extraction time and salt content) for their extent of vitality in carrier mediated liquid microextractions...
October 15, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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