Oral Cannabidiol Does Not Convert to Δ8-THC or Δ9-THC in Humans : A Pharmacokinetic Study in Healthy Subjects José Alexandre S. Crippa, Antonio Waldo Zuardi, Jaime Eduardo Cecílio Hallak, Bruna Miyazawa, Sandra Aparecido Bernardo, Carmem Maria Donaduzzi, Silvane Guzzi, Wagner Alex Jann Favreto, Alline Campos, Maria Eugênia C. Queiroz, Francisco S. Guimarães, Patrícia Moura da Rosa Zimmermann, Letícia Mello Rechia, Volnei Jose Tondo Filho Cannabis and Cannabinoid Research, 2020, Vol. 5, No. 1 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 human subjects [...]
Lire la suiteCytotoxic Effects of Cannabinoids on Human HT-29 Colorectal Adenocarcinoma Cells : Different Mechanisms of THC, CBD, and CB83 Daniela Cerretani, Giulia Collodel, Antonella Brizzi, Anna Ida Fiaschi, Andrea Menchiari, Elena Moretti, Laura Moltoni, Lucia Micheli International Journal of Molecular Sciences, 2020, 21, 5533 Doi : 10.3390/ijms21155533 Abstract In this study, we investigated the effects of exposition to IC50 dose for 24 h of a new synthetic cannabinoid (CB83) and of phytocannabinoids Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD) on HT-29 colorectal carcinoma cells. Cell viability and proliferative activity evaluated using the MTT, lactate dehydrogenase (LDH), and CyQUANT assays showed that cell viability was significantly affected when CB83, THC, and CBD [...]
Lire la suiteMedicinal use of cannabis based products and cannabinoids Tom P. Freeman, Chandni Hindocha, Sebastian F. Green, Michael A. P. Bloomfield British Medical Journal, 2019, 365, l1141 doi : 10.1136/bmj.l1141 What you need to know • Cannabis based products for medicinal use contain cannabinoids derived from the cannabis plant, including Δ9-tetrahydrocannabinol (THC), cannabidiol (CBD), or a combination of THC and CBD. Synthetic cannabinoids for medicinal use typically mimic the effects of specific cannabinoids such as THC • THC is the constituent of cannabis that causes the “high,” whereas CBD is not intoxicating at typical doses. THC and CBD have contrasting mechanisms of action and therapeutic indications; THC [...]
Lire la suite5-HT1A receptors are involved in the cannabidiol-induced attenuation of behavioural and cardiovascular responses to acute restraint stress in rats Leonardo B.M. Resstel, Rodrigo F. Tavares, Sabrina F.S. Lisboa, Sâmia R.L. Joca, Fernando M.A. Corrêa and Francisco S. Guimarães British Journal of Pharmacology, 2009, 156, 181–188; doi : 10.1111/j.1476-5381.2008.00046.x Background and purpose : Cannabidiol (CBD) is a non-psychotomimetic compound from Cannabis sativa which induces anxiolytic- and antipsychotic-like effects in rodents. These effects could be mediated by facilitation of the endocannabinoid system or by the activation of 5-HT1A receptors. As either of these mechanisms could promote adaptation to inescapable stress, the aim of the present work [...]
Lire la suiteDoes cannabidiol reduce severe behavioural problems in children with intellectual disability? Study protocol for a pilot single-site phase I/II randomised placebo controlled trial Daryl Efron, Kaitlyn Taylor, Jonathan M Payne, Jeremy L Freeman, Noel Cranswick, Melissa Mulraney, Chidambaram Prakash, Katherine J Lee, Katrina Williams BMJ Open, 2020, 10, e034362. doi : 10.1136/bmjopen-2019-034362 Abstract Introduction : Severe behavioural problems (SBPs) are a common contributor to morbidity and reduced quality of life in children with intellectual disability (ID). Current medication treatment for SBP is associated with a high risk of side effects. Innovative and safe interventions are urgently needed. Anecdotal reports and preliminary research suggest that medicinal [...]
Lire la suiteA Pilot Randomised Placebo-Controlled Trial of Cannabidiol to Reduce Severe Behavioural Problems in Children and Adolescents With Intellectual Disability Daryl Efron, Jeremy L Freeman, Noel Cranswick, Jonathan M Payne, Melissa Mulraney, Chidambaram Prakash, Katherine J Lee, Kaitlyn Taylor, Katrina Williams British Journal of Clinical Pharmacology, 2020 Jun 1. doi : 10.1111/bcp.14399. Abstract Introduction : Severe Behavioural Problems (SBP) are a major contributor to morbidity in children with Intellectual Disability (ID). Medications used to treat SBP in ID are associated with a high risk of side effects. Cannabidiol has potential therapeutic effects in SBP. This pilot study aimed to investigate the feasibility of conducting a randomized placebo-controlled [...]
Lire la suiteThe nephrologist’s guide to cannabis and cannabinoids Joshua L. Rein Purpose of review Cannabis (marijuana, weed, pot, ganja, Mary Jane) is the most commonly used federally illicit drug in the United States. The present review provides an overview of cannabis and cannabinoids with relevance to the practice of nephrology so that clinicians can best take care of patients. Recent findings Cannabis may have medicinal benefits for treating symptoms of advanced chronic kidney disease (CKD) and end-stage renal disease including as a pain adjuvant potentially reducing the need for opioids. Cannabis does not seem to affect kidney function in healthy individuals. However, renal function should be [...]
Lire la suiteCannabis Misconceptions Still Common Among MS Clinicians Nancy Melville June 05, 2020 https://www.medscape.com/viewarticle/931872?nlid=135873_425&src=WNL_mdplsfeat_200609_mscpedit_psyc&uac=292598PZ&spon=12&impID=2413707&faf=1 Despite the ever-increasing acceptance of medical cannabis and its notably common use in patients with multiple sclerosis (MS), clinicians treating those patients still may be poorly informed about risks, benefits, regulations, and proper uses, experts say. "There is evidence of a 'clinical void,' with clinicians on one side and people with MS and other conditions on the other that doesn't usually exist regarding therapies that people with MS are using," said Allen C. Bowling, MD, PhD, director of the NeuroHealth Institute and clinical professor of neurology at the University of Colorado, in Aurora. His [...]
Lire la suiteDo medical cannabis growers attempt to produce cannabis with different cannabinoid concentrations than recreational growers? Sharon R. Sznitman, Monica J. Barratt, Tom Decorte, Pekka Hakkarainen, Simon Lenton, Gary Potter, Bernd Werse and Chris Wilkins Drugs and Alcohol Today, 2019, 19, (4), 251-256, Doi : 10.1108/DAT-06-2019-0021 Abstract Purpose – It is conceivable that cannabis cultivators who grow for medical purposes aim to improve the therapeutic index of their cannabis by attempting to produce particular concentrations of CBD and/or THC. The purpose of this paper is to examine whether small-scalemedical cannabis growers differ fromthose growing for recreational reasons in terms of self-assessed concentrations of THC and CBD [...]
Lire la suiteQuels sont les différents types d’extraction du CBD ? par Cassandre Saveurs-CBD 21 janv. 2020 https://www.saveurs-cbd.fr/blogs/nos-articles-autour-du-cbd/differents-types-d-extraction-du-cbd Depuis quelques années, le CBD (cannabidiol) est devenu une substance recherchée et très appréciée, situation tout à fait compréhensible si l’on pense à ses nombreuses vertus potentielles. Ainsi, le CBD serait très bénéfique pour la santé grâce à ces différentes propriétés : antidouleur, anxiolytique, antioxydant, anti-vomitif, anticonvulsif. On le trouve sous différentes formes afin de satisfaire tous les types d’utilisateurs. Mais l’huile reste la forme la plus commune et la plus consommée. Point sur les différentes méthodes d’extraction de l’huile de CBD. L’extraction à base d’huile Cette méthode [...]
Lire la suite