Dosage Related Efficacy and Tolerability of Cannabidiol in Children With Treatment-Resistant Epileptic Encephalopathy : Preliminary Results of the CARE-E Study Richard J. Huntsman, Richard Tang-Wai, Jane Alcorn, Stephanie Vuong, Bryan Acton1,5, Scott Corley, Robert Laprairie, Andrew W. Lyon, Simona Meier, Darrell D. Mousseau, Doris Newmeyer, Erin Prosser-Loose, Blair Seifert, Jose Tellez-Zenteno, Linda Huh, Edward Leung and Philippe Major Frontiers in Neurology, 2019, 10:716. doi: 10.3389/fneur.2019.00716 Purpose : There is uncertainty regarding the appropriate dose of Cannabidiol (CBD) for childhood epilepsy. We present the preliminary data of seven participants from the Cannabidiol in Children with Refractory Epileptic Encephalopathy (CARE-E) study. Methods : The study is an open-label, [...]
Lire la suiteA prospective open-label trial of a CBD/THC cannabis oil in dravet syndrome Blathnaid McCoy, Laura Wang, Maria Zak, Sameer Al-Mehmadi, Nadia Kabir, Kenda Alhadid, Kyla McDonald, Grace Zhang, Rohit Sharma, Robyn Whitney, Katia Sinopoli & O. Carter Snead III Annals of Clinical and Translational Neurology, 2018, 5, (9), 1077–1088 doi: 10.1002/acn3.621 Abstract Introduction : Both D9 Tetrahydrocannabidiol (THC) and cannabidiol (CBD) components of cannabis, have been shown to have anticonvulsant effects. Cannabis oils are used to treat seizures in drug-resistant epilepsy (DRE). Recent trials provide data on dosing, side effects, and efficacy of CBD, yet there is a paucity of information on THC in epilepsy. Primary [...]
Lire la suiteHeavy Cannabis Use, Dependence and the Brain: A Clinical Perspective KROON E., KUHNS L., HOCH E., COUSIJN J. Addictions, 2019 Aug 13. doi: 10.1111/add.14776. PMID: 31408248 Abstract AIMS : To summarize and evaluate our knowledge of the relationship between heavy cannabis use, Cannabis Use Disorder (CUD), and the brain. METHODS : Narrative review of relevant literature identified through existing systematic reviews, meta-analyses and a PubMed search. Epidemiology, clinical representations, potential causal mechanisms, assessments, treatment and prognosis are discussed. RESULTS : Although causality is unclear, heavy and dependent cannabis use is consistently associated with a high prevalence of comorbid psychiatric disorders and learning and memory impairments that seem [...]
Lire la suiteNabiximols combined with motivational enhancement/cognitive behavioral therapy for the treatment of cannabis dependence : A pilot randomized clinical trial Jose M. Trigo, Alexandra Soliman, Lena C. Quilty, Benedikt Fischer, JuÈrgen Rehm, Peter Selby, Allan J. Barnes11¤a, Marilyn A. Huestis, Tony P. George, David L. Streiner, Gregory Staios, Bernard Le Foll PLoS ONE, 2018, 13, (1), e0190768. https://doi.org/10.1371/journal.pone.0190768 Abstract Background The current lack of pharmacological treatments for cannabis use disorder (CUD) warrants novel approaches and further investigation of promising pharmacotherapy. We previously showed that nabiximols (27 mg/ml Δ9-tetrahydrocannabinol (THC)/ 25 mg/ml cannabidiol (CBD), Sativex®) can decrease cannabis withdrawal symptoms. Here, we assessed in a pilot study the [...]
Lire la suiteImproved Social Interaction, Recognition and Working Memory with Cannabidiol Treatment in a Prenatal Infection (poly I:C) Rat Model Ashleigh L. Osborne, Nadia Solowij, Ilijana Babic, Xu-Feng Huang and Katrina Weston-Green Neuropsychopharmacology, 2017, 42, 1447–1457 0893-133X/17 www.neuropsychopharmacology.org doi:10.1038/npp.2017.40 Neuropsychiatric disorders such as schizophrenia are associated with cognitive impairment, including learning, memory and attention deficits. Antipsychotic drugs are limited in their efficacy to improve cognition; therefore, new therapeutic agents are required. Cannabidiol (CBD), the non-intoxicating component of cannabis, has anti-inflammatory, neuroprotective and antipsychotic-like properties; however, its ability to improve the cognitive deficits of schizophrenia remains unclear. Using a prenatal infection model, we examined the effect of chronic CBD [...]
Lire la suiteThe Role of Cannabinoids in Neuroanatomic Alterations in Cannabis Users Valentina Lorenzetti, Nadia Solowij, and Murat Yücel Biological Psychiatry, 2016, 79:e17-e31 http://dx.doi.org/10.1016/j.biopsych.2015.11.013 ABSTRACT The past few decades have seen a marked change in the composition of commonly smoked cannabis. These changes primarily involve an increase of the psychoactive compound Δ9-tetrahydrocannabinol (THC) and a decrease of the potentially therapeutic compound cannabidiol (CBD). This altered composition of cannabis may be linked to persistent neuroanatomic alterations typically seen in regular cannabis users. In this review, we summarize recent findings from human structural neuroimaging investigations. We examine whether neuroanatomic alterations are 1) consistently observed in samples of regular cannabis [...]
Lire la suiteCannabidiol (CBD) content in vaporized cannabis does not prevent tetrahydrocannabinol (THC)-induced impairment of driving and cognition. Arkell T.R., Lintzeris N., Kevin R.C., Ramaekers J.G., Vandrey R., Irwin C., Haber P.S., McGregor I.S. Psychopharmacology (Berlin), 2019 DOI : 10.1007/s00213-019-05246-8 PMID : 31044290 Abstract BACKGROUND : The main psychoactive component of cannabis, delta-9-tetrahydrocannabinol (THC), can impair driving performance. Cannabidiol (CBD), a non-intoxicating cannabis component, is thought to mitigate certain adverse effects of THC. It is possible then that cannabis containing equivalent CBD and THC will differentially affect driving and cognition relative to THC-dominant cannabis. AIMS : The present study investigated and compared the effects of THC-dominant and [...]
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 suiteDoes Cannabis Composition Matter? Differential Effects of Delta-9-tetrahydrocannabinol and Cannabidiol on Human Cognition Marco Colizzi & Sagnik Bhattacharyya Current Addiction Reports, 2017, 4, 62–74 DOI 10.1007/s40429-017-0142-2 Abstract Purpose of Review : The lack of clarity about the effect of cannabis use on cognition may be attributable to the considerable heterogeneity among studies in terms of cannabis composition. This article selectively reviews studies examining the distinctive effects of cannabinoids on human cognition, particularly those of delta-9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD). Recent Findings : Research indicates that Δ9-THC administration acutely impairs cognition, particularly memory and emotional processing. Limited evidence suggests that CBD administration might improve cognition in cannabis [...]
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 [...]
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