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IACM-Bulletin of October 27, 2019
🏷️ Science/Human — Cannabis may be helpful in pain management after spinal-cord injury according to an open study
According to a study by a group of scientists from New Zealand and Australia the use of cannabis improved pain management after spinal-cord injury including function and improvement of activities of daily living. Authors interviewed 8 individuals and interpreted 6 themes.
Participants were motivated to use cannabis when other pain management strategies had been ineffective and were well-informed, knowledgeable cannabis consumers. They reported cannabis reduced their pain quickly and enabled them to engage in activities of daily living without the drowsiness of traditional prescribed pain medication.
Bourke JA, Catherwood VJ, Nunnerley JL, Martin RA, Levack WMM, Thompson BL, Acland RH. Using cannabis for pain management after spinal cord injury: a qualitative study. Spinal Cord Ser Cases. 2019;5:82.
Anticancer properties of non-psychedelic cannabinoid cannabidiol (CBD) have been demonstrated on different cancer cells. Different molecular targets for CBD were proposed, including cannabinoid receptors and some ion channels.
Now researchers from the University of Colima, Mexico, have shown shown that leukaemia cells, but not healthy blood cells are highly sensitive to CBD treatment. CBD effect does not depend on cannabinoid receptors or plasma membrane channels. Instead, CBD directly targets mitochondria, the powerhouses of the cells, and alters their capacity to handle calcium. CBD causes mitochondrial calcium overload and cell death.
Olivas-Aguirre M, Torres-López L, Valle-Reyes JS, Hernández-Cruz A, Pottosin I, Dobrovinskaya O. Cannabidiol directly targets mitochondria and disturbs calcium homeostasis in acute lymphoblastic leukemia. Cell Death Dis. 2019;10(10):779.
A team of researchers at the University of Georgia will study how cannabis affects people living with chronic pain. The research project is funded by a $3.5 million grant from the National Institute on Drug Abuse, a branch of the National Institutes of Health.
In a special issue by the journal Lancet authors of the editorial wrote that the medical community should fight for the rights of patients with drug-use problems and offer them “solidarity and protection from the worst excesses of populist politics.” The issue discusses topics “that are likely to become increasingly important in the next decade.”
Regulations concerning derivative cannabis products will officially take effect. Derivatives being nondried flower products, such as edibles, cannabis-infused beverages, vapes, concentrates, and topicals.
🌐 Germany — Market analysis shows that the cannabis market will be worth around €8 billion in 10 years
A market research company specialising in cannabis predicts a market volume of 7.7 billion euros for medical cannabis in Germany by 2028. This is the result of the "Germany Cannabis Report."
Doctors in Switzerland should in future be allowed to prescribe cannabis for medical purposes. This proposal by the Federal Council has met with broad approval in the consultation process. The SVP, SP, FDP and BDP support the planned amendment to the Narcotics Law. Until now, patients in Switzerland have only been able to use cannabis for therapeutic purposes with an exception permit from the Federal Office of Public Health.
Haderslev may become the center of a CO2-neutral medical cannabis production. Sift grain is aimed at local investors who want to invest money in a medical cannabis production facility. It will be in connection with Sønderjysk Biogas I / S in Bevtoft.
Mexico is capable of conducting clinical and scientific studies to develop the first drug derived from cannabis, said Camilo Rios Castañeda, head of the department of neurochemistry at the National Institute of Neurology and Neurosurgery (INNN).
Researchers found biphasic blood concentrations of anandamide during 24 hours, with one peak during the early sleep (2 AM) and a second peak during mid afternoon (3 PM). The lowest concentrations were found in the mid-morning (10 AM). The profiles of some other endocannabinoids (OEA and PEA) followed a similar pattern, while the profile for 2-AG was different.
Department of Medicine, University of Chicago, USA.
🏷️ Science/Human — Patients with spinal-cord injury have a higher risk of using alcohol, cannabis, opioids and tobacco
In a large study with 6192 patients with spinal-cord injury compared to other patients, patients with spinal-cord injury had a considerable higher risk of disorders of alcohol, cannabis, opioid and tobacco use.
Department of Kinesiology, The Pennsylvania State University, USA.
In a study with rats administration of CBD prevented newborn animals from the consequences of lack of oxygen supply, namely disturbance of myelination of nerve cells and associated functional impairment.
Health Research Institute Puerta de Hierro Majadahonda, Madrid, Spain.
In a narcolepsy model with rats CBD prevented excessive sleepiness during daytime. Authors noted, that their findings “suggest that CBD might prevent sleepiness in narcolepsy.”
Universidad Anáhuac Mayab. Mérida, Mexico.
🏷️ Science/Human — Small increase of crash risk after cannabis legalisation in Washington and Colorado
In the five years after legalization of cannabis in Washington and Colorado, fatal crash rates increased more in Colorado and Washington than would be expected had they continued to parallel crash rates in the control states (+1.2 crashes/billion vehicle miles traveled). But the difference was not significant.
Dell Medical School at the University of Texas Austin, USA.
🏷️ Science/Animal — The analgesic effect of diclofenac is mediated by cannabinoid and other receptors
Animal studies show, that pain relieving effects by diclofenac involves several receptors, including the CB1 receptor, the GPR55 and mu-opioid receptors in the brain.
Faculty of Veterinary Medicine, Urmia University, Iran.
🏷️ Science/Animal — The CB1 receptor modulates the effects of polyunsaturated fatty acids on the memory of stressed rats
Blockade of the CB1 receptor by a synthetic compound (AM251) and administration of omega-3 fatty acids improved memory in stressed rats.
Faculty of Sciences, Universidad de Valparaíso, Chile.
🏷️ Science/Animal — A high-fat diet and nicotine increased the level of CB1 receptors in a certain brain region
A combination of a diet high in fat and nicotine increased the level of CB1 receptors in the hypothalamus, a certain brain region. A high-fat diet or nicotine alone were not effective. Authors wrote that “the exposure to nicotine may provoke an enhanced endocannabinoid response in diet-induced obesity.”
Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan.
In a mice model of migraine inhibition of endocannabinoid degradation by inhibition of the enzyme FAAH (fatty acid amide hydrolase) prevented but not aborted treatment of migraine attacks.
IRCCS Mondino Foundation Pavia, Italy.
In a mouse model of depression, the forced swim test, both activation and blockade of the CB2 receptor improved the antidepressant activity of the tested standard medications, that is imipramine, escitalopram and reboxetine. The cannabinoids did not influence the concentrations of the antidepressants.
Chair and Department of Applied and Social Pharmacy, Medical University of Lublin, Poland.
🏷️ Science/Animal — CBD shows pharmacodynamic and pharmacokinetic interactions with the antiepileptic medication clobazam
In a study with rats CBD (cannabidiol) inhibited the metabolism of clobazam in the liver and the combination of CBD and clobazam resulted in an increased anticonvulsant effect. Authors noted that their study “highlights the involvement of both pharmacodynamic and pharmacokinetic interactions between CBD and clobazam that may contribute to its efficacy in Dravet syndrome.”
Brain and Mind Centre, The University of Sydney, Australia.
Researchers investigated optimal conditions for macerating cannabis. They found, that the “optimal condition provided the simultaneous high of cannabidiol and Δ9- tetrahydrocannabinol content was 40 °C for 30 min.”
College of Pharmacy, Rangsit University, Pathum Thani, Thailand.
In a study comparing 911 tobacco smokers and 167 co-users of cannabis and tobacco were compared. Results show, that co-users were exposed to higher levels of toxic substances.
University of Wisconsin - Stevens Point, USA.
🏷️ Science/Human — Cannabis use is an independent risk factor for acute heart attack in young people
According to an analysis of a nationwide sample 1694 patients with acute myocardial infraction aged 15 to 22 years, who were compared to 9,465,255 healthy people of the same age, cocaine (odds ratio: 3.9), amphetamine (odds ratio: 2.3) and cannabis (odds ratio: 1.3) were at high risk for hospitalisation due to a heart attack.
Department of Psychiatry, Griffin Memorial Hospital, Oklahoma, USA.