Catégorie : Publications récentes

Oral Cannabidiol Does Not Convert to Δ8-THC or Δ9-THC in Humans : A Pharmacokinetic Study in Healthy Subjects, Jose´ Alexandre S. Crippa et al., 2019

Oral Cannabidiol Does Not Convert to Δ8-THC or Δ9-THC in Humans : A Pharmacokinetic Study in Healthy Subjects Jose´ Alexandre S. Crippa, Antonio Waldo Zuardi, Jaime Eduardo Cecılio Hallak, Bruna Miyazawa, Sandra Aparecido Bernardo, Carmem Maria Donaduzzi, Silvane Guzzi, Wagner Alex Jann Favreto, Alline Campos, Maria Eugenia C. Queiroz, Francisco S. Guimaraes, Patrıcia Moura da Rosa Zimmermann, Letıcia Mello Rechia, Volnei Jose Tondo Filho, and Liberato Brum Junior Cannabis and Cannabinoid Research, 2019, Volume X, Number X DOI: 10.1089/can.2019.0024   Abstract Introduction: Recent studies have suggested that cannabidiol (CBD) could interconvert into Delta-8- and Delta-9- tetrahydrocannabinol. Materials and Methods: Thus, we tested the plasma samples of 120 healthy [...]

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Comparison of the Neurotoxic and Seizure-Inducing Effects of Synthetic and Endogenous Cannabinoids with Δ9-Tetrahydrocannabinol

Comparison of the Neurotoxic and Seizure-Inducing Effects of Synthetic and Endogenous Cannabinoids with Δ9-Tetrahydrocannabinol Chris S. Breivogel, Jacob R. Wells, Amreen Jonas, Artik H. Mistry, Morgan L. Gravley, Rajul M. Patel, Brianna E. Whithorn, and Bonnie M. Brenseke Cannabis and Cannabinoid Research, 2019, Volume X, Number X DOI: 10.1089/can.2019.0003 Abstract Introduction : Synthetic cannabinoids (SCs) are commonly found in preparations used as recreational drugs. Although severe adverse health effects are not generally associated with cannabis use, a rising number of studies document seizures and even death after SC use. In this study, a mouse model is used to investigate the hypothesis that SCs are more [...]

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2-Linoleoylglycerol Is a Partial Agonist of the Human Cannabinoid Type 1 Receptor that Can Suppress 2-Arachidonolyglycerol and Anandamide Activity, Leanne Lu et al., 2019

2-Linoleoylglycerol Is a Partial Agonist of the Human Cannabinoid Type 1 Receptor that Can Suppress 2-Arachidonolyglycerol and Anandamide Activity Leanne Lu, Gareth Williams, and Patrick Doherty Cannabis and Cannabinoid Research, 2019, Volume X, Number X Doi : 10.1089/can.2019.0030 Abstract Introduction : The cannabinoid type 1 (CB1) receptor and cannabinoid type 2 (CB2) receptor are widely expressed in the body and anandamide (AEA) and 2-arachidonoylglycerol (2-AG) are their best characterized endogenous ligands. The diacylglycerol lipases (diacylglycerol lipase alpha and diacyl-glycerol lipase beta) not only synthesize essentially all the 2-AG in the body but also generate other monoacylglycerols, including 2-linoleoylglycerol (2-LG). This lipid has been proposed to modulate endocannabinoid [...]

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Receptor-Enriched Analysis of functional connectivity by targets (REACT) : A novel, multimodal analytical approach informed by PET to study the pharmacodynamic response of the brain under MDMA, Ottavia Dipasquale et al., 2019

Receptor-Enriched Analysis of functional connectivity by targets (REACT) : A novel, multimodal analytical approach informed by PET to study the pharmacodynamic response of the brain under MDMA Ottavia Dipasquale, Pierluigi Selvaggi, Mattia Veronese, Anthony S. Gabay, Federico Turkheimer, Mitul A. Mehta NeuroImage, 2019, 195, 252–260 https://doi.org/10.1016/j.neuroimage.2019.04.007   A B S T R A C T One of the main limitations of pharmacological fMRI is its inability to provide a molecular insight into the main effect of compounds, leaving an open question about the relationship between drug effects and haemodynamic response. The aim of this study is to investigate the acute effects of 3,4-methylene-dioxymethamphetamine (MDMA) on functional [...]

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Psilocybin exerts distinct effects on resting state networks 1 associated with serotonin and dopamine in mice, Joanes Grandjean et al., 2019

Psilocybin exerts distinct effects on resting state networks 1 associated with serotonin and dopamine in mice Joanes Grandjean, David Buehlmann, Michaela Buerge, Hannes Sigrist, Erich Seifritz, Franz X. Vollenweider, Christopher R. Pryce, Markus Rudin Preprint · September 2019 Doi : 10.1101/751255   Abstract Hallucinogenic agents have been proposed as potent antidepressants; this includes the serotonin (5-HT) receptor 2A agonist psilocybin. In human subjects, psilocybin alters functional connectivity (FC) within the default-mode network (DMN), a constellation of inter-connected regions that is involved in self-reference and displays altered FC in depressive disorders. In this study we investigated the effects of psilocybin on FC in the analogue of the [...]

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Le microdosage de substances psychédéliques : bref historique et nouveaux axes de recherche, Vittorio Biancardi, 2019

Le microdosage de substances psychédéliques : bref historique et nouveaux axes de recherche Vittorio Biancardi Revue CIRCE, 2019, 11,   Résumé Le micro-dosage est un phénomène social de plus en plus répandu parmi la communauté des consommateurs et consommatrices des substances dites psychédéliques. Il consiste une consommation d’un dixième de la dose typique de substance (principalement LSD ou Psilocybine) de façon fréquente, deux ou trois fois par semaine, pour améliorer les capacités cognitives ou comme auto-thérapie. L’analyse de ce phénomène est actuellement très fragmentaire et inconsistante, tant du point de vue des sciences humaines que du point de vue des sciences dites «dures». L’objectif de [...]

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Utilisation des substances psychédéliques en thérapeutique et « auto-expérimentation », Christian Sueur, Colloque ATHS, 4 octobre 2019, Biarritz

Utilisation des substances psychédéliques en thérapeutique et « auto-expérimentation » Docteur Christian SUEUR Colloque ATHS, 4 octobre 2019, Biarritz   Le 14 mai dernier, est paru sur le site Vice.com, un article signé de Shayla Love, intitulé « The Ethics of Taking the Drugs You Study. Should psychedelic scientists trip on the drugs they research ? ».[1] Cette question pause la question, tant éthique que technique, de la nécessaire juxtaposition, lorsque l’on envisage la mise en place de thérapies psychédéliques, des apports récents de la neurobiologie éclairant le mode d’action cérébral des substances psychédéliques, et de la connaissance des effets psychiques de ces substances, grâce à l’auto-expérimentation des effets de [...]

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Scientists mass-produce ‘magic mushroom’ active ingredient from bacteria, ZEM Science, 2019

Scientists mass-produce 'magic mushroom' active ingredient from bacteria The study shows that psilocybin can be produced in a sustainable manner. https://www.zmescience.com/medicine/scientists-mass-produce-magic-mushroom-active-ingredient-from-bacteria/ byTibi Puiu October 3, 2019 Psilocybin, the active psychoactive compound found in specific mushrooms, is a promising drug that can be used to treat depression, anxiety, addiction, and post-traumatic stress disorder. Looking towards the future, researchers at Miami University have used genetic engineering to coax harmless E. coli bacteria to produce psilocybin. Psilocybe semilanceata. Credit: Pixabay. The mushrooms that produce psilocybin, such as Psilocybe cubensis, are not particularly expensive or difficult to grow. However, they do take up a lot of space and require many [...]

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Opportunities for cannabis in supportive care in cancer, Amber S. Kleckner et al., 2019

Opportunities for cannabis in supportive care in cancer Amber S. Kleckner , Ian R. Kleckner, Charles S. Kamen, Mohamedtaki A. Tejani, Michelle C. Janelsins, Gary R. Morrow and Luke J. Peppone Therapeutic Advances in Medical Oncology, 2019, Vol. 11, 1–29 Doi : 10.1177/1758835919866362   Abstract Cannabis has the potential to modulate some of the most common and debilitating symptoms of cancer and its treatments, including nausea and vomiting, loss of appetite, and pain. However, the dearth of scientific evidence for the effectiveness of cannabis in treating these symptoms in patients with cancer poses a challenge to clinicians in discussing this option with their patients. A review [...]

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Don’t Fear the Reefer—Evidence Mounts for Plant-Based Cannabidiol as Treatment for Epilepsy, Commentary, M. Scott Perry, 2019

Don’t Fear the Reefer—Evidence Mounts for Plant-Based Cannabidiol as Treatment for Epilepsy - Commentary M. Scott Perry Epilepsy Currents, 2019, Vol. 19, (2), 93-95 DOI: 10.1177/1535759719835671   Effect of Cannabidiol on Drop Seizures in the Lennox-Gastaut Syndrome Devinsky O, Patel AD, Cross JH, et al; GWPCARE3 Study Group. N Engl J Med, 2018, 378, 1888-1897. Background : Cannabidiol has been used for treatment-resistant seizures in patients with severe early-onset epilepsy. We investigated the efficacy and safety of cannabidiol added to a regimen of conventional antiepileptic medication to treat drop seizures in patients with the Lennox-Gastaut syndrome, a severe developmental epileptic encephalopathy. Methods : In this double-blind, placebo-controlled trial conducted [...]

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