“A small body of work has started developing cannabis use “typologies” for use in treatment and prevention.
Two potentially relevant dimensions for classifying cannabis use typologies are medical versus recreational cannabis use and the co-use of cannabis and alcohol.
Here we compare alcohol use and related problems between cannabis users with and without medical cannabis recommendations.
“There are currently three cannabinoids available on the pharmaceutical market. Dronabinol and Nabilone are both synthetic tetrahydrocannabinol (THC) which the FDA has approved for treatment of chemotherapy-induced nausea and vomiting (CINV) after the failure of a trial of first-line anti-emetics. Both are also FDA approved to treat anorexia associated with AIDS. Recently, the FDA has also approved a cannabidiol (CBD) product to treat seizures associated with Lennox-Gastaut Syndrome and Dravel Syndrome in pediatric patients. However, there is no FDA approved indication for its use as an anti-emetic. Independently produced cannabidiol extracts are being used increasingly in the general population for many non-FDA approved indications, frequently including nausea and emesis. In states that have decriminalized marijuana, both in recreational and medicinal contexts, products with varying ratios of cannabidiol and THC are also used for their anti-emetic properties.”
“Cannabis exerts its psychoactive effect through cannabinoid receptors that are widely distributed across the cortical surface of the human brain. It is suggested that cannabis use may contribute to structural alterations across the cortical surface.
In a large, multisite dataset of 120 controls and 141 cannabis users, we examined whether differences in key characteristics of the cortical surface – including cortical thickness, surface area, and gyrification index were related to cannabis use characteristics, including (i) cannabis use vs. non-use, (ii) cannabis dependence vs. non-dependence vs. non-use, and (iii) early adolescent vs. late adolescent onset of cannabis use vs. non-use.
Our results revealed that cortical morphology was not associated with cannabis use, dependence, or onset age.
The lack of effect of regular cannabis use, including problematic use, on cortical structure in our study is contrary to previous evidence of cortical morphological alterations (particularly in relation to cannabis dependence and cannabis onset age) in cannabis users.
Careful reevaluation of the evidence on cannabis-related harm will be necessary to address concerns surrounding the long-term effects of cannabis use and inform policies in a changing cannabis regulation climate.”
https://www.ncbi.nlm.nih.gov/pubmed/30558823
https://www.sciencedirect.com/science/article/pii/S0924977X18319874?via%3Dihub
“The administration of cannabinoid receptor 2 (CB2R) agonist has been reported to produce a cardioprotective effect against the pathogenesis and progression of myocardial infarction (MI).
Here in this study, we investigated the specific mechanism related to inflammatory suppression. JWH-133 was used for the activation of CB2R.
Taken together, we demonstrated for the first time the cardioprotective effect of CB2R agonist and its NLRP3 inflammasome-related mechanism in MI.”
“To characterize the socio-demographic characteristics, medical conditions, and psychiatric comorbidities of users of marijuana for medical and non-medical purposes.
In relation to non-medical only users (n = 3339), combined (n = 362) and medical only (n = 82) users had higher prevalence of every medical condition examined. As compared to the combined use group, those using marijuana only for medical purposes were much less likely to have anxiety, alcohol, or non-medical prescription opioid use disorders.
Medical-only users appear to use it for evidence-based medical reasons and have lower prevalence of substance use disorder than other marijuana users. Nonetheless, because most medical marijuana users also use non-medically, screening for psychiatric disorders and prevention efforts for cannabis use disorder should be implemented when authorizing medical marijuana.”
https://www.ncbi.nlm.nih.gov/pubmed/30557813
https://www.sciencedirect.com/science/article/pii/S0376871618305660?via%3Dihub
Nabiximols was well tolerated, and no participants withdrew from the double-blind phase of the study. No serious adverse effects occurred.
In this proof-of-concept trial, nabiximols had a positive effect on spasticity symptoms in patients with motor neuron disease and had an acceptable safety and tolerability profile.”
https://www.ncbi.nlm.nih.gov/pubmed/30554828
https://www.thelancet.com/journals/laneur/article/PIIS1474-4422(18)30406-X/fulltext
“Medicolegal realities surrounding “medical marijuana” or “medical cannabis” are rapidly evolving in the United States. Clinicians are increasingly being asked by patients to share information about or certify them for medical cannabis. In order to engage in informed discussions with patients or be comfortable certifying them in states with medical cannabis laws, clinicians may benefit from an understanding of the current state of medical knowledge about medical cannabis. Intended for the generalist and subspecialist, this review provides an overview of the legal status, pharmacology, benefits, risks, and abuse liability of medical cannabis along with a general framework for counseling patients.”
“Infections caused by antibiotic-resistant strains of Staphylococcus aureus have reached epidemic proportions globally. Staphylococcal biofilms are associated with increased antimicrobial resistance and are generally less affected by host immune factors. Therefore, there is an urgent need for novel agents that not only aim at multidrug-resistant pathogens, but also ones that will act as anti biofilms. In the present study, we investigated the antimicrobial activity of the endocannabinoid (EC) anandamide (AEA) and the endocannabinoid-like (EC-like), arachidonoyl serine (AraS) against methicillin resistant S. aureus strains (MRSA). We observed a strong inhibition of biofilm formation of all tested MRSA strains as well as a notable reduction of metabolic activity of pre-formed MRSA biofilms by both agents. Moreover, staphylococcal biofilm-associated virulence determinants such as hydrophobicity, cell aggregation and spreading ability were altered by AEA and AraS. In addition, the agents were able to modify bacterial membrane potential. Importantly, both compounds prevent biofilm formation by altering the surface of the cell without killing the bacteria. Therefore, we propose that EC and EC-like compounds may act as a natural line of defence against MRSA or other antibiotic resistant bacteria. Due to their anti biofilm action these agents could also be a promising alternative to antibiotic therapeutics against biofilm-associated MRSA infections.”
https://www.ncbi.nlm.nih.gov/pubmed/30523307
https://www.nature.com/articles/s41598-018-35793-7
“Antimicrobial Activity of Cannabis sativa L.” https://www.scirp.org/journal/PaperInformation.aspx?PaperID=18123
“The endocannabinoids anandamide (AEA) and 2-arachidonoylglyerol (2-AG) are endogenous lipid mediators that exert protective roles in pathophysiological conditions, including cardiovascular diseases. In this brief review, we provide a conceptual framework linking endocannabinoid signaling to the control of the cellular and molecular hallmarks, and categorize the key components of endocannabinoid signaling that may serve as targets for novel therapeutics. The emerging picture not only reinforces endocannabinoids as potent regulators of cellular metabolism but also reveals that endocannabinoid signaling is mechanistically more complex and diverse than originally thought.”
https://www.ncbi.nlm.nih.gov/pubmed/30553404
https://www.plefa.com/article/S0952-3278(18)30176-5/fulltext
“It has been known for nearly 50 years that cannabis and the psychoactive constituent Δ9-tetrahydrocannabinol (THC) reduce intraocular pressure (IOP).
Elevated IOP remains the chief hallmark and therapeutic target for glaucoma, a major cause of blindness.
THC likely acts via one of the known cannabinoid-related receptors (CB1, CB2, GPR18, GPR119, GPR55) but this has never been determined explicitly.
Cannabidiol (CBD) is a second major constituent of cannabis that has been found to be without effect on IOP in most studies.
We now report that a single topical application of THC lowered IOP substantially (∼28%) for 8 hours in male mice. This effect is due to combined activation of CB1 and GPR18 receptors each of which has been shown to lower ocular pressure when activated. We also found that the effect was sex-dependent, being stronger in male mice, and that mRNA levels of CB1 and GPR18 were higher in males. Far from inactive, CBD was found to have two opposing effects on ocular pressure, one of which involved antagonism of tonic signaling.
CBD prevents THC from lowering ocular pressure.
We conclude that THC lowers IOP by activating two receptors-CB1 and GPR18-but in a sex-dependent manner. CBD, contrary to expectation, has two opposing effects on IOP and can interfere with the effects of THC.”
https://www.ncbi.nlm.nih.gov/pubmed/30550613
https://iovs.arvojournals.org/article.aspx?articleid=2718702