“Cannabis sativa active compounds are extensively studied for their therapeutic effects, beyond the well-known psychotropic activity. C. Sativa is used to treat different medical indications, such as multiple sclerosis, spasticity, epilepsy, ulcerative colitis and pain. Simultaneously, basic research is discovering new constituents of cannabis-derived compounds and their receptors capable of neuroprotection and neuronal activity modulation. The function of the various phytochemicals in different therapeutic processes is not fully understood, but their significant role is starting to emerge and be appreciated. In this review, we will consider the structure-activity relationship (SAR) of cannabinoid compounds able to bind to cannabinoid receptors and act as therapeutic agents in neuronal diseases, e.g., Parkinson’s disease.” https://www.ncbi.nlm.nih.gov/pubmed/29941830 http://www.mdpi.com/1420-3049/23/7/1526]]>
Cannabigerol Action at Cannabinoid CB1 and CB2 Receptors and at CB1–CB2 Heteroreceptor Complexes
“Cannabigerol (CBG) is one of the major phytocannabinoids present in Cannabis sativa L. that is attracting pharmacological interest because it is non-psychotropic and is abundant in some industrial hemp varieties. The aim of this work was to investigate in parallel the binding properties of CBG to cannabinoid CB1 (CB1R) and CB2 (CB2R) receptors and the effects of the compound on agonist activation of those receptors and of CB1–CB2 heteroreceptor complexes. The results indicate that CBG is indeed effective as regulator of endocannabinoid signaling. In conclusion, the results presented in this study reveal that the non-psychotropic phytocannabinoid, CBG, may exert beneficial actions with therapeutic potential via cannabinoid receptors.” https://www.frontiersin.org/articles/10.3389/fphar.2018.00632/full
“International Multi-Centre Collaboration Reveals that Cannabigerol Acts Directly on Cannabinoid Receptors CB1 and CB2” https://www.prnewswire.com/news-releases/international-multi-centre-collaboration-reveals-that-cannabigerol-acts-directly-on-cannabinoid-receptors-cb1-and-cb2-300671024.html
]]>“Illogical” cannabis regulation blocks research into therapeutic uses, say doctors
“Doctors should be able to prescribe cannabis legally and research its therapeutic use more easily, 20 prominent UK clinicians and academics have said.
In a letter to The Times on 20 June, they “strongly urge the government” to recategorise cannabis from schedule 1 to schedule 2 under the UK Misuse of Drugs Regulations 2001.
Schedule 1 is for illicit substances deemed to have no clinical application and which doctors cannot prescribe; schedule 2 drugs, including, for example, diamorphine (heroin), are subject to requirements relating to prescriptions.
Last week, Savid Javid, the home secretary, said that a panel would be set up to review the evidence for medical cannabis that could see the drug rescheduled.”
https://www.bmj.com/content/361/bmj.k2780.full]]>Driving Under the Influence of Cannabis: A Framework for Future Policy.
“Marijuana is a commonly found illicit substance in motor vehicle operators driving under the influence of drugs. Current evidence shows that blood levels of tetrahydrocannabinol do not correlate well with the level of impairment. In addition, although acute infrequent use of cannabis typically leads to cognitive and psychomotor impairment, this is not consistently the case for chronic heavy use.” https://www.ncbi.nlm.nih.gov/pubmed/29933274 https://insights.ovid.com/crossref?an=00000539-900000000-96658]]>
Pain Modulation after Oromucosal Cannabinoid Spray (SATIVEX®) in Patients with Multiple Sclerosis: A Study with Quantitative Sensory Testing and Laser-Evoked Potentials.
“Delta-9-tetrahydrocannabinol (THC)/cannabidiol (CBD) (nabiximols or Sativex®) is an oromucosal spray formulation containing THC and CBD at an approximately 1:1 fixed ratio. Its administration for the treatment of pain in patients with multiple sclerosis (MS) has been established.
MS patients generally complain of different kinds of pain, including spasticity-related and neuropathic pain. In this study, we compared and evaluated pain modulation and thermal/pain threshold of MS patients before and after THC/CBD administration.
Patients reported a significant reduction in pain.
Our results indicate that Sativex® therapy provides pain relief in MS patients and suggest that it might modulate peripheral cold-sensitive TRP channels.”
https://www.ncbi.nlm.nih.gov/pubmed/29933552
http://www.mdpi.com/2305-6320/5/3/59
Medical Cannabis in Patients with Chronic Pain: Effect on Pain Relief, Pain Disability, and Psychological aspects. A Prospective Non randomized Single Arm Clinical Trial.
“There is an increasing interest in the medical use of cannabis, particularly in the treatment of chronic pain.
“Breast cancer is the second leading cause of death among women. Although early diagnosis and development of new treatments have improved their prognosis, many patients present innate or acquired resistance to current therapies. New therapeutic approaches are therefore warranted for the management of this disease.
Extensive preclinical research has demonstrated that cannabinoids, the active ingredients of 
“Prominent motor deficits (e.g., chorea) that typify Huntington’s disease (HD) arise following a prolonged prodromal stage characterized by psychiatric disturbances. Apathy, a disorder of motivation characterized by diminished goal-directed behavior, is one of the earliest and most common psychiatric symptoms in HD, but the underlying neurobiology is unclear and treatment options are limited.
Alterations in the endocannabinoid (eCB) and dopamine systems represent prominent pathophysiological markers in HD that-similar to motivational deficits-present early and decline across disease progression. Whether changes in dopamine and eCB systems are associated with specific behavioral impairments in HD and whether these deficits are amenable to viable treatments is unknown.
Here, we show that dopaminergic encoding of effortful drive progressively declines with age in an HD mouse model, and is restored by elevating tissue levels of the eCB 2-arachidonoylglycerol (2-AG) through targeted inhibition of its enzymatic degradation.
This work supports aberrant dopaminergic encoding of reward as a neurobiological correlate of apathy in HD, and indicates that cannabinoid receptor-based therapies may benefit neuropsychiatric care for HD.”
“Cannabis and