Psychological variables implied in the therapeutic effect of ayahuasca : a contextual approach. Alba Franquesa, Alberto Sainz-Cort, Sam Gandy, Joaquim Soler, Miguel Ángel Alcázar-Córcoles, José Carlos Bouso Psychiatry Research, 2017 PII: S0165-1781(17)31377-X DOI: 10.1016/j.psychres.2018.04.012 Abstract Ayahuasca is a psychedelic decoction originating from Amazonia. The ayahuasca-induced introspective experience has been shown to have potential benefits in the treatment of several pathologies, to protect mental health and to improve neuropsychological functions and creativity, and boost mindfulness. The underlying psychological processes related to the use of ayahuasca in a psychotherapeutic context are not yet well described in the scientific literature, but there is some evidence to suggest that psychological [...]
Lire la suiteMeasuring Disturbance of the Endocannabinoid System in Psychosis. A Systematic Review and Meta-analysis Amedeo Minichino, MD1; Morwenna Senior, MD1; Natascia Brondino, PhD2; et al Sam H Zhang, BA1; Beata R Godwlewska, PhD1; Philip W.J Burnet, PhD1; Andrea Cipriani, PhD1,3; Belinda R. Lennox, DM1 JAMA Psychiatry, Published online June 5, 2019. doi:10.1001/jamapsychiatry.2019.0970 Editorial : Pathophysiology of Endocannabinoid Signaling in Schizophrenia David W. Volk, MD, PhD; David A. Lewis, MD Question Is the endocannabinoid system abnormal in people with psychosis? Findings In this systematic review and meta-analysis of 18 studies, a higher tone of the endocannabinoid system was observed in people with psychosis, a finding that was consistent across all stages of illness and independent of antipsychotic treatment and current cannabis use. This increased tone was [...]
Lire la suiteDu LSD ou de l’ecstasy pour traiter la maladie mentale La thérapie psychédélique a pour principe d’aider les gens à adopter un nouveau regard sur leur santé et leur mode de vie. Alexis Riopel 10 décembre 2018 https://www.ledevoir.com/societe/sante/543271/science-du-lsd-ou-de-l-ecstasy-pour-traiter-la-maladie-mentale Un cachet, une séance, des effets qui perdurent. Grosso modo, telle est la promesse des psychiatres qui travaillent sur le développement de traitements recourant à des drogues psychédéliques pour soigner des troubles de santé mentale. Plutôt que d’apaiser les symptômes de la maladie mentale, ces substances servent à « reconnecter » le cerveau. Si elles étaient légalisées dans un contexte médical — et c’est ce qui semble en [...]
Lire la suiteDoes cannabidiol protect against adverse psychological effects of THC ? Raymond J. M. Niesink and Margriet W. van Laar Frontiers in Psychiatry, 2013, 4, 130 doi : 10.3389/fpsyt.2013.00130. Abstract The recreational use of cannabis can have persistent adverse effects on mental health. Delta 9-tetrahydro-cannabinol (THC) is the main psychoactive constituent of cannabis, and most, if not all, of the effects associated with the use of cannabis are caused by THC. Recent studies have suggested a possible protective effect of another cannabinoid, cannabidiol (CBD). A literature search was performed in the bibliographic databases PubMed, PsycINFO, andWeb of Science using the keyword “cannabidiol.” After removing duplicate entries, [...]
Lire la suiteThe neuropsychopharmacology of cannabis : A review of human imaging studies Michael A.P. Bloomfield, Chandni Hindocha, Sebastian F. Green, Matthew B.Wall, Rachel Lees, Katherine Petrilli, Harry Costello, M. Olabisi Ogunbiyi, Matthijs G. Bossong, Tom P. Freeman Pharmacology & Therapeutics, 2019, 195, 132-161 doi : 10.1016/j.pharmthera.2018.10.006 a b s t r a c t The laws governing cannabis are evolving worldwide and associated with changing patterns of use. The main psychoactive drug in cannabis is Δ9-tetrahydrocannabinol (THC), a partial agonist at the endocannabinoid CB1 receptor. Acutely, cannabis and THC produce a range of effects on several neurocognitive and pharmacological systems. These include effects on executive, emotional, [...]
Lire la suiteCannabidiol inhibits THC-elicited paranoid symptoms and hippocampal-dependent memory impairment Amir Englund, Paul D Morrison, Judith Nottage, Dominic Hague, Fergus Kane1, Stefania Bonaccorso1, James M Stone, Avi Reichenberg, Rudolf Brenneisen, David Holt, Amanda Feilding, Lucy Walker, Robin M Murray and Shitij Kapur Journal of Psychopharmacology, 2012 Doi : 10.1177/0269881112460109 Abstract Community-based studies suggest that cannabis products that are high in Δ9-tetrahydrocannabinol (THC) but low in cannabidiol (CBD) are particularly hazardous for mental health. Laboratory-based studies are ideal for clarifying this issue because THC and CBD can be administered in pure form, under controlled conditions. In a between-subjects design, we tested the hypothesis that pre-treatment with CBD inhibited [...]
Lire la suiteDissociable effects of cannabis with and without cannabidiol on the human brain’s resting-state functional connectivity Matthew B. Wall, Rebecca Pope, Tom P. Freeman, Oliwia S. Kowalczyk, Lysia Demetriou, Claire Mokrysz, Chandni Hindocha, Will Lawn, Michael A.P. Bloomfield, Abigail M. Freeman, Amanda Feilding, David J. Nutt and H. Valerie Curran Journal of Psychopharmacology, 2019, 1–9 DOI: 10.1177/0269881119841568 journals.sagepub.com/home/jop Abstract Background : Two major constituents of cannabis are Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD). THC is the main psychoactive component; CBD may buffer the user against the harmful effects of THC. Aims : We examined the effects of two strains of cannabis and placebo on the human brain’s resting-state networks [...]
Lire la suiteBibliographie : Cannabinoïdes et TSA/TED/psychoses infantiles. Dr Christian Sueur, GRECC, mars 2019. (2e version) ARAN A., CASSUTO H., LUBOTZKY : Cannabidiol Based Medical Cannabis in Children with Autism- a Retrospective Feasability Study (P3.318), Neurology Genetics, 2018, 90 (15). http://n.neurology.org/content/90/15_Supplement/P3.318 ARAN A., CASSUTO H., LUBOTZKY A., WATTAD N., HAZAN E. : Brief Report : Cannabidiol-Rich Cannabis in Children with Autism Spectrum Disorder and Severe Behavioral Problems-A Retrospective Feasability Study, Journal of Autism and Developmental Disorders, 2018 Oct 31. Doi : 10.1007/s10803-018-3808-2 BARCHEL D., STOLAR O., De-HAAN T., ZIV-BARAN T., SABAN N., FUCHS D.O., KOREN G., BERKOVITCH M. : Oral Cannabidiol Use in Children With Auttism Spectrum Disorder to Treat Related Symptoms [...]
Lire la suiteThe Treatment of Cannabis Use Disorder Itai Danovitch, David A. Gorelick, Chapter,The Assessment and Treatment of Addiction, january 2019 Abstract: Worldwide, cannabis is the most commonly used illicit substance. Approximately 8-12% of persons who use cannabis will develop cannabis use disorder (CUD) at some point in their life. Several psychosocial treatment methods have shown efficacy in controlled clinical trials, including motivational enhancement therapy, cognitive behavioral therapy, and contingency management. While no pharmacotherapy has been established as broadly effective for CUD, gabapentin and N-acetylcysteine have shown efficacy in single controlled clinical trials, and a number of promising approaches are under study. This article reviews established [...]
Lire la suiteSynthetic Cannabinoids and Synthetic Cannabinoid-Induced Psychotic Disorders (Chapitre 9) Papanti Duccio*,†, Schifano Fabrizio†, Orsolini Laura†,‡ *Drug Addiction Centre, Latisana, Italy †University of Hertfordshire, Hatfield, United Kingdom ‡Polyedra Research Group, Teramo, Italy The Complex Connection Between Cannabis and Schizophrenia. (Chapitre 9) http://dx.doi.org/10.1016/B978-0-12-804791-0.00009-4 © 2018 Elsevier Inc. All rights reserved. INTRODUCTION Both phytocannabinoids, the psychoactive compounds naturally present in the cannabis plant, and synthetic cannabinoids (SCs; also known as synthetic cannabimimetics) exert their effects through alteration of the endocannabinoid system (Szabo, 2014). There are at least 104 different phytocannabinoids in cannabis, and their combination contributes to the psychoactive effects of cannabis (ElSohly & Gul, 2014). In 1967, the United States [...]
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