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https://www.readbyqxmd.com/read/29461039/dark-classics-in-chemical-neuroscience-lysergic-acid-diethylamide-lsd
#1
David E Nichols
LSD is one of the most potent psychoactive agents known, producing dramatic alterations of consciousness after submilligram (≥20 g) oral doses. Following the accidental discovery of its potent psychoactive effects in 1943, it was supplied by Sandoz Laboratories as an experimental drug that might be useful as an adjunct for psychotherapy, or to give psychiatrists insight into the mental processes in their patients. The finding of serotonin in the mammalian brain in 1953, and its structural resemblance to LSD, quickly led to ideas that serotonin in the brain might be involved in mental illness, initiating rapid research interest in the neurochemistry of serotonin...
February 20, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29452127/serotonergic-psychedelics-and-personality-a-systematic-review-of-contemporary-research
#2
REVIEW
José Carlos Bouso, Rafael G Dos Santos, Miguel Ángel Alcázar-Córcoles, Jaime E C Hallak
Serotonergic psychedelics act as agonists at cortical 5-HT 2A receptors and seem to induce personality changes. We conducted a systematic review of studies assessing the effects of these drugs on personality. Papers published from 1985 to 2016 were included from PubMed, LILACS, and SciELO databases. Three hundred and sixty-nine studies were identified, and 18 were included. Specific personality traits, such as Absorption and Self-Transcendence, seem to influence the effects of psychedelics, and psychedelic drug users and nonusers appear to differ in some personality traits...
February 13, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29449105/comparing-cryptomarkets-for-drugs-a-characterisation-of-sellers-and-buyers-over-time
#3
Meropi Tzanetakis
INTRODUCTION: Cryptomarkets operating on the darknet are a recent phenomenon that has gained importance only over the last couple of years (Barratt, 2012). However, they now constitute an evolving part of illicit drug markets. Although selling and buying a variety of psychoactive substances on the Internet has a long history, new technological developments enable systematic drug trading on the net.These technological innovations on the Internet allow users to proceed with (illicit) drug transactions with almost completely anonymous identities and locations...
February 12, 2018: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29446697/psychedelics-and-the-essential-importance-of-context
#4
Robin Lester Carhart-Harris, Leor Roseman, Eline Haijen, David Erritzoe, Rosalind Watts R, Igor Branchi, Mendel Kaelen
Psychedelic drugs are making waves as modern trials support their therapeutic potential and various media continue to pique public interest. In this opinion piece, we draw attention to a long-recognised component of the psychedelic treatment model, namely 'set' and 'setting' - subsumed here under the umbrella term 'context'. We highlight: (a) the pharmacological mechanisms of classic psychedelics (5-HT2A receptor agonism and associated plasticity) that we believe render their effects exceptionally sensitive to context, (b) a study design for testing assumptions regarding positive interactions between psychedelics and context, and (c) new findings from our group regarding contextual determinants of the quality of a psychedelic experience and how acute experience predicts subsequent long-term mental health outcomes...
February 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29445838/psychedelics-and-related-drugs-therapeutic-possibilities-mechanisms-and-regulation
#5
EDITORIAL
H Valerie Curran, David Nutt, Harriet de Wit
No abstract text is available yet for this article.
February 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29427652/evaluating-the-abuse-potential-of-psychedelic-drugs-for-medical-use-in-humans
#6
REVIEW
David J Heal, Jane Gosden, Sharon L Smith
Psychedelics comprise drugs come from various pharmacological classes including 5-HT 2A agonists, indirect 5-HT agonists, e.g. MDMA, NMDA antagonists and κ-opioid receptor agonists. There is resurgence in developing psychedelics to treat psychiatric disorders with high unmet clinical need. Many, but not all, psychedelics are schedule 1 controlled drugs (CDs), i.e. no approved medical use. For existing psychedelics in development, regulatory approval will require a move from schedule 1 to a CD schedule for drugs with medical use, i...
February 7, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29408722/is-lsd-toxic
#7
REVIEW
David E Nichols, Charles S Grob
LSD (lysergic acid diethylamide) was discovered almost 75 years ago, and has been the object of episodic controversy since then. While initially explored as an adjunctive psychiatric treatment, its recreational use by the general public has persisted and on occasion has been associated with adverse outcomes, particularly when the drug is taken under suboptimal conditions. LSD's potential to cause psychological disturbance (bad trips) has been long understood, and has rarely been associated with accidental deaths and suicide...
February 1, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29403350/the-experience-elicited-by-hallucinogens-presents-the-highest-similarity-to-dreaming-within-a-large-database-of-psychoactive-substance-reports
#8
Camila Sanz, Enzo Tagliazucchi
Ever since the modern rediscovery of psychedelic substances by Western society, several authors have independently proposed that their effects bear a high resemblance to the dreams and dreamlike experiences occurring naturally during the sleep-wake cycle. Recent studies in humans have provided neurophysiological evidence supporting this hypothesis. However, a rigorous comparative analysis of the phenomenology ("what it feels like" to experience these states) is currently lacking. We investigated the semantic similarity between a large number of subjective reports of psychoactive substances and reports of high/low lucidity dreams, and found that the highest-ranking substance in terms of the similarity to high lucidity dreams was the serotonergic psychedelic lysergic acid diethylamide (LSD), whereas the highest-ranking in terms of the similarity to dreams of low lucidity were plants of the Datura genus, rich in deliriant tropane alkaloids...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29396616/the-hidden-therapist-evidence-for-a-central-role-of-music-in-psychedelic-therapy
#9
Mendel Kaelen, Bruna Giribaldi, Jordan Raine, Lisa Evans, Christopher Timmerman, Natalie Rodriguez, Leor Roseman, Amanda Feilding, David Nutt, Robin Carhart-Harris
RATIONALE: Recent studies have supported the safety and efficacy of psychedelic therapy for mood disorders and addiction. Music is considered an important component in the treatment model, but little empirical research has been done to examine the magnitude and nature of its therapeutic role. OBJECTIVES: The present study assessed the influence of music on the acute experience and clinical outcomes of psychedelic therapy. METHODS: Semi-structured interviews inquired about the different ways in which music influenced the experience of 19 patients undergoing psychedelic therapy with psilocybin for treatment-resistant depression...
February 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29356590/taking-psychedelics-seriously
#10
Ira Byock
BACKGROUND: Psychiatric research in the 1950s and 1960s showed potential for psychedelic medications to markedly alleviate depression and suffering associated with terminal illness. More recent published studies have demonstrated the safety and efficacy of psilocybin, MDMA, and ketamine when administered in a medically supervised and monitored approach. A single or brief series of sessions often results in substantial and sustained improvement among people with treatment-resistant depression and anxiety, including those with serious medical conditions...
January 22, 2018: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/29339294/ketamine-for-the-treatment-of-addiction-evidence-and-potential-mechanisms
#11
REVIEW
I Ivan Ezquerra-Romano, W Lawn, E Krupitsky, C J A Morgan
Ketamine is a dissociative anaesthetic drug which acts on the central nervous system chiefly through antagonism of the n-methyl-d-aspartate (NMDA) receptor. Recently, ketamine has attracted attention as a rapid-acting anti-depressant but other studies have also reported its efficacy in reducing problematic alcohol and drug use. This review explores the preclinical and clinical research into ketamine's ability to treat addiction. Despite methodological limitations and the relative infancy of the field, results thus far are promising...
January 12, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29338538/increased-nature-relatedness-and-decreased-authoritarian-political-views-after-psilocybin-for-treatment-resistant-depression
#12
Taylor Lyons, Robin L Carhart-Harris
RATIONALE: Previous research suggests that classical psychedelic compounds can induce lasting changes in personality traits, attitudes and beliefs in both healthy subjects and patient populations. AIM: Here we sought to investigate the effects of psilocybin on nature relatedness and libertarian-authoritarian political perspective in patients with treatment-resistant depression (TRD). METHODS: This open-label pilot study with a mixed-model design studied the effects of psilocybin on measures of nature relatedness and libertarian-authoritarian political perspective in patients with moderate to severe TRD ( n=7) versus age-matched non-treated healthy control subjects ( n=7)...
January 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29313138/do-psychoactive-drugs-have-a-therapeutic-role-in-compulsivity-studies-on-schedule-induced-polydipsia
#13
Elena Martín-González, Ángeles Prados-Pardo, Santiago Mora, Pilar Flores, Margarita Moreno
RATIONALE: Clinical studies have shown that some psychoactive recreational drugs have therapeutic applications in anxiety, depression, and schizophrenia. However, to date, there are few studies on the therapeutic potential efficacy of recreational drugs in compulsive neuropsychiatric disorders. OBJECTIVES: We explored the therapeutic potential of different psychoactive and psychedelic drugs in a preclinical model of compulsive behavior. METHODS: Outbred male Wistar rats were selected as either high (HD) or low (LD) drinkers according to their behavior in schedule-induced polydipsia (SIP)...
January 8, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29302713/psilocybin-disrupts-sensory-and-higher-order-cognitive-processing-but-not-pre-attentive-cognitive-processing-study-on-p300-and-mismatch-negativity-in-healthy-volunteers
#14
Anna Bravermanová, Michaela Viktorinová, Filip Tylš, Tomáš Novák, Renáta Androvičová, Jakub Korčák, Jiří Horáček, Marie Balíková, Inga Griškova-Bulanova, Dominika Danielová, Přemysl Vlček, Pavel Mohr, Martin Brunovský, Vlastimil Koudelka, Tomáš Páleníček
RATIONALE: Disruption of auditory event-related evoked potentials (ERPs) P300 and mismatch negativity (MMN), electrophysiological markers of attentive and pre-attentive cognitive processing, is repeatedly described in psychosis and schizophrenia. Similar findings were observed in a glutamatergic model of psychosis, but the role of serotonergic 5-HT2A receptors in information processing is less clear. OBJECTIVES: We studied ERPs in a serotonergic model of psychosis, induced by psilocybin, a psychedelic with 5-HT2A/C agonistic properties, in healthy volunteers...
January 5, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29284546/medical-emergencies-related-to-ethanol-and-illicit-drugs-at-an-annual-nocturnal-indoor-electronic-dance-music-event
#15
Paul Calle, Nora Sundahl, Kristof Maudens, Sarah Mr Wille, Diederik Van Sassenbroeck, Koen De Graeve, Stefan Gogaert, Peter De Paepe, Dieter Devriese, Geert Arno, Peter Blanckaert
Introduction Medical problems are frequently encountered during electronic dance music (EDM) events. Problem There are uncertainties about the frequencies and severity of intoxications with different types of recreational drugs: ethanol, "classical" illicit party drugs, and new psychoactive substances (NPS). METHODS: Statistical data on the medical problems encountered during two editions of an indoor electronic dance event with around 30,000 attendants were retrieved from the Belgian Red Cross (Mechelen, Belgium) database...
December 29, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/29284138/psychiatry-the-psychedelic-drugs-past-present-future
#16
REVIEW
James J H Rucker, Jonathan Iliff, David J Nutt
The classical psychedelic drugs, including psilocybin, lysergic acid diethylamide and mescaline, were used extensively in psychiatry before they were placed in Schedule I of the UN Convention on Drugs in 1967. Experimentation and clinical trials undertaken prior to legal sanction suggest that they are not helpful for those with established psychotic disorders and should be avoided in those liable to develop them. However, those with so-called 'psychoneurotic' disorders sometimes benefited considerably from their tendency to 'loosen' otherwise fixed, maladaptive patterns of cognition and behaviour, particularly when given in a supportive, therapeutic setting...
December 25, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29194645/detection-and-identification-of-psilocybe-cubensis-dna-using-a-real-time-polymerase-chain-reaction-high-resolution-melt-assay
#17
Ashley F Cowan, Kelly M Elkins
Psilocybe cubensis, or "magic mushroom," is the most common species of fungus with psychedelic characteristics. Two primer sets were designed to target Psilocybe DNA using web-based software and NBCI gene sequences. DNA was extracted from eighteen samples, including twelve mushroom species, using the Qiagen DNeasy® Plant Mini Kit. The DNA was amplified by the polymerase chain reaction (PCR) using the primers and a master mix containing either a SYBR® Green I, Radiant™ Green, or LCGreen Plus® intercalating dye; amplicon size was determined using agarose gel electrophoresis...
December 1, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29189143/retrospective-demonstration-of-25i-nbome-acute-poisoning-using-hair-analysis
#18
Alice Ameline, Audrey Farrugia, Jean-Sebastien Raul, Pascal Kintz
BACKGROUND: The abuse of new psychoactive substances or NPS has been dramatically increasing all around the world since the late 2000s and has become a serious public health problem. NPS are a challenge for the worldwide forensic community due to the difficulties to accurately document the cases. The N-benzylmethoxy (NBOMe) group is a new class of hallucinogenic designer drugs and has gained importance in the recent years. 25I-NBOMe (2-(4-iodo-2,5-dimethoxyphenyl)-N-[(2-methoxyphenyl)methyl]ethanamine) is an analog of the 2C series of psychedelic phenethylamine drugs that contain an N-methoxybenzyl substituent, which significantly affects their pharmacological activities...
November 29, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29178663/ketamine-for-chronic-non-cancer-pain-a-meta-analysis-and-trial-sequential-analysis-of-randomized-controlled-trials
#19
REVIEW
D Michelet, C Brasher, A-L Horlin, M Bellon, F Julien-Marsollier, T Vacher, S Pontone, S Dahmani
BACKGROUND: Ketamine has been suggested to be efficient in relieving chronic pain. However, there is inconsistency across studies investigating the effect of ketamine for chronic pain management. We aimed to perform a meta-analysis in order to assess the efficacy of this compound during chronic non-cancer pain conditions. METHODS: The study consisted in a meta-analysis of clinical trials comparing ketamine to a placebo during chronic non-cancer pain. The primary endpoint of this study was pain relief 4 weeks after the beginning of treatment...
November 26, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29178010/psychedelics-and-reconsolidation-of-traumatic-and-appetitive-maladaptive-memories-focus-on-cannabinoids-and-ketamine
#20
REVIEW
Liana Fattore, Alessandro Piva, Mary Tresa Zanda, Guido Fumagalli, Cristiano Chiamulera
RATIONALE: Clinical data with 3,4-methylenedioxymethamphetamine (MDMA) in post-traumatic stress disorder (PTSD) patients recently stimulated interest on the potential therapeutic use of psychedelics in disorders characterized by maladaptive memories, including substance use disorders (SUD). The rationale for the use of MDMA in PTSD and SUD is being extended to a broader beneficial "psychedelic effect," which is supporting further clinical investigations, in spite of the lack of mechanistic hypothesis...
November 25, 2017: Psychopharmacology
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