Catégorie : Publications récentes

Study finds no evidence marijuana use increases stroke risk, HealthDay News, 2020.

Study finds no evidence marijuana use increases stroke risk HealthDay News, 2020. https://www.upi.com/Health_News/2020/06/04/Study-finds-no-evidence-marijuana-use-increases-stroke-risk/3321591274273/?upi_ss=Cannabis An observational study conducted at hospitals found no evidence that marijuana use increases risk for stroke. File Photo by Atomazul/Shutterstock Whether pot use increases the risk of stroke has been hotly debated, and now a new study adds to evidence that it doesn't. "Our observational study looked specifically at recent cannabis use by reviewing drug testing data for people admitted to the hospital. While more research is needed with larger numbers of people, our study lends support to the studies showing that cannabis use does not increase the risk of stroke," said [...]

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LSD, madness and healing : Mystical experiences as possible link between psychosis model and therapy model, Isabel Wießner et al., 2021

LSD, madness and healing : Mystical experiences as possible link between psychosis model and therapy model Isabel Wießner, Marcelo Falchi, Fernanda Palhano-Fontes, Amanda Feilding, Sidarta Ribeiro and Luís Fernando Tófoli Psychological Medicine, 2021, 1-15. Doi : 10.1017/S0033291721002531   Abstract Background : For a century, psychedelics have been investigated as models of psychosis for demonstrating phenomenological similarities with psychotic experiences and as therapeutic models for treating depression, anxiety, and substance use disorders. This study sought to explore this paradoxical relationship connecting key parameters of the psychotic experience, psychotherapy, and psychedelic experience. Methods : In a randomized, double-blind, placebo-controlled, crossover design, 24 healthy volunteers received 50 μg D-lysergic acid diethylamide (LSD) or inactive placebo. [...]

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Efficacy and Safety of Cannabidiol Plus Standard Care vs Standard Care Alone for the Treatment of Emotional Exhaustion and Burnout Among Frontline Health CareWorkers During the COVID-19 Pandemic. A Randomized Clinical Trial, José Alexandre S. Crippa et al, 2021,

Efficacy and Safety of Cannabidiol Plus Standard Care vs Standard Care Alone for the Treatment of Emotional Exhaustion and Burnout Among Frontline Health CareWorkers During the COVID-19 Pandemic. A Randomized Clinical Trial José Alexandre S. Crippa, PhD; AntonioW. Zuardi, PhD; Francisco S. Guimarães, PhD; Alline Cristina Campos, PhD; Flávia de Lima Osório, PhD; Sonia Regina Loureiro, PhD; Rafael G. dos Santos, PhD; José Diogo S. Souza, MD; Juliana Mayumi Ushirohira, MD, MSc; Julia Cozar Pacheco, RPh; Rafael Rinaldi Ferreira, PhD, RPh; Karla Cristinne Mancini Costa, MSc; Davi Silveira Scomparin, MSc; Franciele Franco Scarante, MSc; Isabela Pires-Dos-Santos, VMD; Raphael Mechoulam, PhD; Flávio Kapczinski, PhD; Benedito [...]

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Cannabinoid-based Medications for Pain Raymond M. St. Marie, Raphael J. Leo, 2021

Cannabinoid-based Medications for Pain Raymond M. St. Marie, MD; Raphael J. Leo, MA, MD Current Psychiatry, 2021, 20(5), 21-33. Abstract and Introduction Introduction Against the backdrop of an increasing opioid use epidemic and a marked acceleration of prescription opioid–related deaths,[1,2] there has been an impetus to explore the usefulness of alternative and co-analgesic agents to assist patients with chronic pain. Preclinical studies employing animal-based models of human pain syndromes have demonstrated that cannabis and chemicals derived from cannabis extracts may mitigate several pain conditions.[3] Because there are significant comorbidities between psychiatric disorders and chronic pain, psychiatrists are likely to care for patients with chronic pain. As [...]

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Neuroprotective Effect of Cannabidiol Against Hydrogen Peroxide in Hippocampal Neuron Culture, Jungnam Kim et al., 2021

Neuroprotective Effect of Cannabidiol Against Hydrogen Peroxide in Hippocampal Neuron Culture Jungnam Kim, Ji Yu Choi, Jeongyeon Seo, and Insung S. Choi Cannabis and Cannabinoid Research, 2021, Volume 6, Number 1, 40-48. Doi : 10.1089/can.2019.0102   Abstract Introduction : Reports on the neurotoxic and neuroprotective effects of cannabidiol (CBD) have not been in complete accord, showing different and somewhat contradictory results depending upon the brain cell types and experimental conditions employed. This work systematically examines the neuroprotective capability of CBD against oxidative stress (i.e., hydrogen peroxide [H2O2]) as well as its toxicity profile in the in vitro culture platform of primary hippocampal neurons. Materials and Methods : [...]

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Reducing Effect of Cannabidiol on Alcohol Self-Administration in Sardinian Alcohol-Preferring Rats, Paola Maccioni et al., 2021

Reducing Effect of Cannabidiol on Alcohol Self-Administration in Sardinian Alcohol-Preferring Rats Paola Maccioni, Jessica Bratzu, Mauro A.M. Carai, Giancarlo Colombo, and Gian Luigi Gessa Cannabis and Cannabinoid Research, 2021, Doi : 10.1089/can.2020.0132   Abstract Introduction : Cannabidiol (CBD) is a major cannabinoid extracted from Cannabis sativa with no abuse potential. Data from recent rodent studies suggest that amelioration of alcohol-motivated behaviors may be one of the numerous pharmacological effects of CBD. This study was designed to contribute to this research, assessing the effect of CBD on operant oral alcohol self-administration in selectively bred Sardinian alcohol preferring (sP) rats, a validated animal model of excessive alcohol consumption. [...]

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Cannabinoids, Phenolics, Terpenes and Alkaloids of Cannabis, Mohamed M. Radwan et al., 2021

Cannabinoids, Phenolics, Terpenes and Alkaloids of Cannabis Mohamed M. Radwan, Suman Chandra, Shahbaz Gul and Mahmoud A. ElSohly Molecules, 2021, 26, 2774. Doi : 10.3390/molecules26092774   Abstract : Cannabis sativa is one of the oldest medicinal plants in the world. It was introduced into western medicine during the early 19th century. It contains a complex mixture of secondary metabolites, including cannabinoids and non-cannabinoid-type constituents. More than 500 compounds have been reported from C. sativa, of which 125 cannabinoids have been isolated and/or identified as cannabinoids. Cannabinoids are C21 terpeno phenolic compounds specific to Cannabis. The non-cannabinoid constituents include: non-cannabinoid phenols, flavonoids, terpenes, alkaloids and others. This review discusses [...]

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Protective Effects of Cannabidivarin and Cannabigerol on Cells of the Blood–Brain Barrier Under Ischemic Conditions, Nicole L. Stone et al., 2021

Protective Effects of Cannabidivarin and Cannabigerol on Cells of the Blood–Brain Barrier Under Ischemic Conditions Nicole L. Stone, Timothy J. England, and Saoirse E. O’Sullivan Cannabis and Cannabinoid Research, 2021, Doi : 10.1089/can.2020.0159   Abstract Background and Objectives : Preclinical studies have shown cannabidiol is protective in models of ischemic stroke. Based on results from our recent systematic review, we investigated the effects of two promising neuroprotective phytocannabinoids, cannabigerol (CBG) and cannabidivarin (CBDV), on cells of the blood–brain barrier (BBB), namely human brain microvascular endothelial cells (HBMECs), pericytes, and astrocytes. Experimental Approach : Cultures were subjected to oxygen-glucose deprivation (OGD) protocol to model ischemic stroke and cell [...]

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New Insights on Hemp Oil Enriched in Cannabidiol: Decarboxylation, Antioxidant Properties and In Vitro Anticancer Effect, Anca Roxana Petrovici et al., 2021

New Insights on Hemp Oil Enriched in Cannabidiol: Decarboxylation, Antioxidant Properties and In Vitro Anticancer Effect Anca Roxana Petrovici, Natalia Simionescu, Andreea Isabela Sandu, Vasile Paraschiv, Mihaela Silion and Mariana Pinteala Antioxidants, 2021, 10, 738. doi : 10.3390/antiox10050738   Abstract : This study aimed to obtain and characterize extracted hemp oil enriched in cannabidiol (CBD) by decarboxylation of cannabidiolic acid (CBDA) and to give new insights into its antioxidant and anticancer effects. Optimization of CBDA decarboxylation in hemp oil was performed, and CBD and CBDA contents and purities were determined by flash chromatography, 1H- and 13C-NMR. The antioxidant properties of CBD-enriched oil were investigated by Fe2+ [...]

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Cannabis-related diagnosis in pregnancy and adverse maternal and infant outcomes, Gretchen Bandoli et al., 2021

Cannabis-related diagnosis in pregnancy and adverse maternal and infant outcomes Gretchen Bandoli, Laura Jelliffe-Pawlowski, Benjamin Schumacher, Rebecca J. Baer, Jennifer N. Felder, Jonathan D. Fuchs, Scott P. Oltman, Martina A. Steurer, Carla Marienfeld Drug and Alcohol Dependence, 2021, 225, 108757. doi : 10.1016/j.drugalcdep.2021.108757   Abstract Background: Cannabis use and cannabis use disorders are increasing in prevalence, including among pregnant women. The objective was to evaluate the association of a cannabis-related diagnosis (CRD) in pregnancy and adverse maternal and infant outcomes. Methods: We queried an administrative birth cohort of singleton deliveries in California between 2011-2017 linked to maternal and infant hospital discharge records. We [...]

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