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Cannabidiol

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https://www.readbyqxmd.com/read/29161743/pharmacological-foundations-of-cannabis-chemovars
#1
Mark A Lewis, Ethan B Russo, Kevin M Smith
An advanced Mendelian Cannabis breeding program has been developed utilizing chemical markers to maximize the yield of phytocannabinoids and terpenoids with the aim to improve therapeutic efficacy and safety. Cannabis is often divided into several categories based on cannabinoid content. Type I, Δ(9)-tetrahydrocannabinol-predominant, is the prevalent offering in both medical and recreational marketplaces. In recent years, the therapeutic benefits of cannabidiol have been better recognized, leading to the promotion of additional chemovars: Type II, Cannabis that contains both Δ(9)-tetrahydrocannabinol and cannabidiol, and cannabidiol-predominant Type III Cannabis...
November 21, 2017: Planta Medica
https://www.readbyqxmd.com/read/29160600/current-evidence-of-cannabinoid-based-analgesia-obtained-in-preclinical-and-human-experimental-settings
#2
REVIEW
J Lötsch, I Weyer-Menkhoff, I Tegeder
Cannabinoids have a long record of recreational and medical use and become increasingly approved for pain therapy. This development is based on preclinical and human experimental research summarized in this review. Cannabinoid CB1 receptors are widely expressed throughout the nociceptive system. Their activation by endogenous or exogenous cannabinoids modulates the release of neurotransmitters. This is reflected in antinociceptive effects of cannabinoids in preclinical models of inflammatory, cancer and neuropathic pain, and by nociceptive hypersensitivity of cannabinoid receptor-deficient mice...
November 21, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29145345/the-role-of-sativex-in-robotic-rehabilitation-in-individuals-with-multiple-sclerosis-rationale-study-design-and-methodology
#3
Margherita Russo, Vincenzo Dattola, Anna Lisa Logiudice, Rosella Ciurleo, Edoardo Sessa, Rosaria De Luca, Placido Bramanti, Alessia Bramanti, Antonino Naro, Rocco Salvatore Calabrò
INTRODUCTION: Currently, none of the available multiple sclerosis (MS) disease-modifying medications has been shown to stop or reverse gait disability. Recently, the nabiximols has been tested for the treatment of spasticity and walking impairment in MS. Nabiximols (trade name Sativex) is an oromucosal spray formulation containing 1:1 fixed ratio of delta-9-tetrahydrocannabinol and cannabidiol derived from cloned Cannabis sativa L. plant. METHOD AND ANALYSIS: A single-center, prospective, parallel design, single-blind trial will be conducted at the IRCCS Neurolesi "Bonino-Pulejo" (Italy) involving MS patients affected by spasticity and undergoing a Robotic Rehabilitation training...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143581/multiple-sclerosis-symptoms-and-spasticity-management-new-data
#4
Guillermo Izquierdo
Spasticity, perceived by patients as muscle rigidity and spasms, is a common symptom in multiple sclerosis (MS). It is associated with functional impairment that can exacerbate other MS symptoms and reduce quality of life. Pharmacological treatment options are limited and frequently ineffective. Treatment adherence is a key issue to address in these patients. The efficacy and safety of 9-delta-tetrahydrocannabinol:cannabidiol (THC:CBD) oromucosal spray for treatment of MS spasticity were demonstrated in four Phase III trials...
November 2017: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/29134767/availability-and-approval-of-cannabis-based-medicines-for-chronic-pain-management-and-palliative-supportive-care-in-europe-a-survey-of-the-status-in-the-chapters-of-the-european-pain-federation
#5
N Krcevski-Skvarc, C Wells, W Häuser
BACKGROUND: There is considerable public and political interest in the use of cannabis products for medical purposes. METHODS: The task force of the European Pain Federation (EFIC) conducted a survey with its national chapters representatives on the status of approval of all types of cannabis-based medicines, the covering of costs and the availability of a position paper of a national medical association on the use of medical cannabis for chronic pain and for symptom control in palliative/supportive care...
November 13, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29129557/pharmacokinetic-and-behavioural-profile-of-thc-cbd-and-thc-cbd-combination-after-pulmonary-oral-and-subcutaneous-administration-in-rats-and-confirmation-of-conversion-in-vivo-of-cbd-to-thc
#6
Tomáš Hložek, Libor Uttl, Lukáš Kadeřábek, Marie Balíková, Eva Lhotková, Rachel R Horsley, Pavlína Nováková, Klára Šíchová, Kristýna Štefková, Filip Tylš, Martin Kuchař, Tomáš Páleníček
Metabolic and behavioural effects of, and interactions between Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD) are influenced by dose and administration route. Therefore we investigated, in Wistar rats, effects of pulmonary, oral and subcutaneous (sc.) THC, CBD and THC+CBD. Concentrations of THC, its metabolites 11-OH-THC and THC-COOH, and CBD in serum and brain were determined over 24h, locomotor activity (open field) and sensorimotor gating (prepulse inhibition, PPI) were also evaluated. In line with recent knowledge we expected metabolic and behavioural interactions between THC and CBD...
November 9, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29126755/-cannabis-and-lung-what-we-know-and-everything-we-don-t-know-yet
#7
REVIEW
T Urban, J Hureaux
Cannabis use increased sharply from 2010 to 2014 in France. Cannabis is often consumed with tobacco, although the use of marijuana is developing. Tobacco and cannabis smoke have many common characteristics in terms of irritants, carcinogens and carbon monoxide. They also differentiate by their dependence mechanisms, with nicotine and its receptors for tobacco and tetra-hydro-cannabinol (THC) and its specific receptors for cannabis. Chronic inhalation (700,000 daily users in France) over a long period most likely increases the relative risk of bronchial cancer...
November 7, 2017: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/29125965/death-by-self-mutilation-after-oral-cannabis-consumption
#8
Clemence Delteil, Caroline Sastre, Marie-Dominique Piercecchi, Catherine Faget-Agius, Marc Deveaux, Pascal Kintz, Marc-Antoine Devooght, George Leonetti, Christophe Bartoli, Anne-Laure Pélissier-Alicot
Major self-mutilation (amputation, castration, self-inflicted eye injuries) is frequently associated with psychiatric disorders and/or substance abuse. A 35-year-old man presented with behavioral disturbances of sudden onset after oral cannabis consumption and major self-mutilation (attempted amputation of the right arm, self-enucleation of both eyes and impalement) which resulted in death. During the enquiry, four fragments of a substance resembling cannabis resin were seized at the victim's home. Autopsy confirmed that death was related to hemorrhage following the mutilations...
November 2, 2017: Legal Medicine
https://www.readbyqxmd.com/read/29125702/single-dose-pharmacokinetics-of-oral-cannabidiol-following-administration-of-ptl101-a-new-formulation-based-on-gelatin-matrix-pellets-technology
#9
Jacob Atsmon, Daphna Heffetz, Lisa Deutsch, Frederic Deutsch, Hagit Sacks
Cannabidiol (CBD) is the main nonpsychoactive component of the cannabis plant. It has been associated with antiseizure, antioxidant, neuroprotective, anxiolytic, anti-inflammatory, antidepressant, and antipsychotic effects. PTL101 is an oral gelatin matrix pellets technology-based formulation containing highly purified CBD embedded in seamless gelatin matrix beadlets. Study objectives were to evaluate the safety and tolerability of PTL101 containing 10 and 100 mg CBD, following single administrations to healthy volunteers and to compare the pharmacokinetic profiles and relative bioavailability of CBD with Sativex oromucosal spray (the reference product) in a randomized, crossover study design...
November 10, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/29124331/cannabidiol-as-a-treatment-for-epilepsy
#10
William O Pickrell, Neil P Robertson
No abstract text is available yet for this article.
December 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29115760/efficacy-and-safety-of-cannabis-for-treating-children-with-refractory-epilepsy
#11
Michelle Neale
The aim of this literature review was to examine the evidence base for the safety and efficacy of cannabis in treating children with refractory epilepsy. Clinical and medical databases were searched and four articles were included in the final analysis, which included retrospective reviews and open-label trials with a total sample size of 424. One clinical trial included administration of cannabidiol, the non-psychoactive compound of cannabis, while the other three articles stated that the compound administered to participants contained tetrahydrocannabidiol, the psychoactive constituent of cannabis...
September 11, 2017: Nursing Children and Young People
https://www.readbyqxmd.com/read/29114823/labeling-accuracy-of-cannabidiol-extracts-sold-online
#12
Marcel O Bonn-Miller, Mallory J E Loflin, Brian F Thomas, Jahan P Marcu, Travis Hyke, Ryan Vandrey
No abstract text is available yet for this article.
November 7, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29109685/binding-and-signaling-studies-disclose-a-potential-allosteric-site-for-cannabidiol-in-cannabinoid-cb2-receptors
#13
Eva Martínez-Pinilla, Katia Varani, Irene Reyes-Resina, Edgar Angelats, Fabrizio Vincenzi, Carlos Ferreiro-Vera, Julen Oyarzabal, Enric I Canela, José L Lanciego, Xavier Nadal, Gemma Navarro, Pier Andrea Borea, Rafael Franco
The mechanism of action of cannabidiol (CBD), the main non-psychotropic component of Cannabis sativa L., is not completely understood. First assumed that the compound was acting via cannabinoid CB2 receptors (CB2Rs) it is now suggested that it interacts with non-cannabinoid G-protein-coupled receptors (GPCRs); however, CBD does not bind with high affinity to the orthosteric site of any GPCR. To search for alternative explanations, we tested CBD as a potential allosteric ligand of CB2R. Radioligand and non-radioactive homogeneous binding, intracellular cAMP determination and ERK1/2 phosphorylation assays were undertaken in heterologous systems expressing the human version of CB2R...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29109461/oral-administration-of-cannabis-with-lipids-leads-to-high-levels-of-cannabinoids-in-the-intestinal-lymphatic-system-and-prominent-immunomodulation
#14
Atheer Zgair, Jong Bong Lee, Jonathan C M Wong, Dhiaa A Taha, Jehan Aram, Daisy Di Virgilio, Joshua W McArthur, Yu-Kit Cheng, Ivo M Hennig, David A Barrett, Peter M Fischer, Cris S Constantinescu, Pavel Gershkovich
Cannabidiol (CBD) and ∆(9)-tetrahydrocannabinol (THC) have well documented immunomodulatory effects in vitro, but not following oral administration in humans. Here we show that oral co-administration of cannabinoids with lipids can substantially increase their intestinal lymphatic transport in rats. CBD concentrations in the lymph were 250-fold higher than in plasma, while THC concentrations in the lymph were 100-fold higher than in plasma. Since cannabinoids are currently in clinical use for the treatment of spasticity in multiple sclerosis (MS) patients and to alleviate nausea and vomiting associated with chemotherapy in cancer patients, lymphocytes from those patients were used to assess the immunomodulatory effects of cannabinoids...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29106691/developmental-effects-of-cannabidiol-and-%C3%AE-9-tetrahydrocannabinol-in-zebrafish
#15
Dennis R Carty, Cammi Thornton, James Gledhill, Kristine L Willett
Cannabidiol (CBD) has gained much attention in the past several years for its therapeutic potential in the treatment of drug-resistant epilepsy, such as Dravet Syndrome. While CBD has shown anecdotal efficacy in reducing seizure frequency, little is known regarding the potential adverse side-effects of CBD on physiology, development, organogenesis, or behavior. The goal of this project is to compare the relative morphological, behavioral, and gene expression phenotypes resulting after a developmental exposure to Δ9-tetrahydrocannabinol (THC) or CBD...
November 2, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29105041/the-crop-residue-of-fiber-hemp-cv-futura-75-from-a-waste-product-to-a-source-of-botanical-insecticides
#16
Giovanni Benelli, Roman Pavela, Giulio Lupidi, Massimo Nabissi, Riccardo Petrelli, Stephane L Ngahang Kamte, Loredana Cappellacci, Dennis Fiorini, Stefania Sut, Stefano Dall'Acqua, Filippo Maggi
In the attempt to exploit the potential of the monoecious fiber hemp cv. Futura 75 in new fields besides textile, cosmetics and food industry, its crop-residue given by leaves and inflorescences was subjected to hydrodistillation to obtain the essential oils. These are niche products representing an ideal candidate for the development of natural insecticides for the control and management of mosquito vectors, houseflies and moth pests. After GC-MS analysis highlighting a safe and legal chemical profile (THC in the range 0...
November 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29099795/microwave-assisted-extraction-of-cannabinoids-in-hemp-nut-using-response-surface-methodology-optimization-and-comparative-study
#17
Chih-Wei Chang, Ching-Chi Yen, Ming-Tsang Wu, Mei-Chich Hsu, Yu-Tse Wu
Hemp nut is commonly incorporated into several food preparations; however, most countries set regulations for hemp products according to their cannabinoid content. In this study, we have developed an efficient microwave-assisted extraction (MAE) method for cannabinoids (i.e., Δ9-tetrahydrocannabinol, cannabidiol, and cannabinol) in hemp nut. Optimization of the MAE procedure was conducted through single factor experiments and response surface methodology (RSM). A comparative study was also conducted to determine the differences in the extraction yields and morphology of hemp nut between MAE and reference extraction methods, namely heat reflux extraction (HRE), Soxhlet extraction (SE), supercritical fluid extraction (SFE), and ultrasound-assisted extraction (UAE)...
November 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29098190/cannabis-sativa-hemp-seeds-%C3%AE-9-tetrahydrocannabinol-and-potential-overdose
#18
Yi Yang, Melissa M Lewis, Angelica M Bello, Ewa Wasilewski, Hance A Clarke, Lakshmi P Kotra
Introduction:Cannabis sativa (hemp) seeds are popular for their high nutrient content, and strict regulations are in place to limit the amount of potentially harmful phytocannabinoids, especially Δ(9)-tetrahydrocannabinol (Δ(9)-THC). In Canada, this limit is 10 μg of Δ(9)-THC per gram of hemp seeds (10 ppm), and other jurisdictions in the world follow similar guidelines. Materials and Methods: We investigated three different brands of consumer-grade hemp seeds using four different procedures to extract phytocannabinoids, and quantified total Δ(9)-THC and cannabidiol (CBD)...
2017: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/29098188/translating-endocannabinoid-biology-into-clinical-practice-cannabidiol-for-stroke-prevention
#19
REVIEW
Eugene L Scharf
Introduction: The endocannabinoid system (ECS) regulates functions throughout human physiology, including neuropsychiatric, cardiovascular, autonomic, metabolic, and inflammatory states. The complex cellular interactions regulated by the ECS suggest a potential for vascular disease and stroke prevention by augmenting central nervous and immune cell endocannabinoid signaling. Discussion: The endocannabinoid N-arachidonoylethanolamine (anandamide) plays a central role in augmenting these processes in cerebrovascular and neurometabolic disease...
2017: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/29098186/chronic-adolescent-%C3%AE-9-tetrahydrocannabinol-treatment-of-male-mice-leads-to-long-term-cognitive-and-behavioral-dysfunction-which-are-prevented-by-concurrent-cannabidiol-treatment
#20
Michelle Murphy, Sierra Mills, Joanna Winstone, Emma Leishman, Jim Wager-Miller, Heather Bradshaw, Ken Mackie
Introduction: The high prevalence of adolescent cannabis use, the association between this use and later psychiatric disease, and increased access to high-potency cannabis highlight the need for a better understanding of the long-term effects of adolescent cannabis use on cognitive and behavioral outcomes. Furthermore, increasing Δ(9)-tetrahydrocannabinol (THC) in high-potency cannabis is accompanied by a decrease in cannabidiol (CBD), thus an understanding of the interactions between CBD and THC in the neurodevelopmental effects of THC is also important...
2017: Cannabis and Cannabinoid Research
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