Please use this link to access this publication. Abstract Research has indicated that cannabis consumption through alternative modes of use such as eating/drinking or vaping may be increasing in areas where cannabis has been legalized. However, there is little research that examines these different modes of cannabis use in a Canadian youth context. The purpose of this study was to identify pre-legalization modes of cannabis use (smoking, eating/drinking, vaping) among a sample of 45,677 secondary school students who participated in year 6 (2017/18) of the COMPASS study. Within our sample, 24.9% reported cannabis use within the last 12 months; among those, 38.7% reported occasional use,...

Please use this link to access this publication. Abstract Adolescence is a crucial developmental period where neural circuits are refined and the brain is especially vulnerable to external insults. The endocannabinoid (eCB) system undergoes changes during adolescence which affect the way in which it modulates the development of other systems, in particular dopamine circuits, which show protracted development into adolescence. Given the rise of cannabis use by adolescents and young people, as well as variants containing increasingly higher concentrations of THC, it is now crucial to understand the unique effects of adolescent exposure to cannabis on the developing brain and it might shape future adult vulnerabilities to conditions such...

Abstract Symptomatic management of Parkinson’s disease (PD) is complex and many symptoms, especially non-motor symptoms, are not effectively addressed with current medications. In the US, cannabis has become more widely available for medical and recreational use, permitting those in the PD community to try alternative means of symptom control. However, little is known about the attitudes towards, and experiences with, cannabis use among those living with PD. To address this shortcoming, we distributed an anonymous survey to 7,607 people with PD in January 2020 and received 1339 responses (17.6%). 1064 complete responses were available for analysis. Respondents represented 49 states with a mean age...

Abstract Metallic nanoparticles, especially gold nanoparticles, are used in the therapy of various diseases. Recently, many chemotherapeutic supplements or drugs have been formulated with gold nanoparticles. One option for synthesizing gold nanoparticles is to use herbs. Many previous studies have shown that medicinal herbs increase the antioxidant and cytotoxicity properties of gold nanoparticles against tumor cell lines. In this study, gold nanoparticles were prepared and synthesized in an aqueous medium using Cannabis sativa L leaf extract as stabilizing and reducing agents. In addition, we evaluated the anti-leukemia effects of gold nanoparticles against acute T-cell leukemia and lymphoblastic leukemia cell lines. Characterization of gold nanoparticles was done with FE...

Abstract Objectives To assess the motivation of cancer survivors to consume medical cannabis and to assess the patterns of use, perceived efficacy, as well as side and adverse effects. Methods Cross-sectional survey among 190 Israeli cancer survivors who were licensed to use medical cannabis in a single institution. In addition to demographic information, the questionnaire examined patterns of use (including dosage, type of cannabis and way of administration), motivation for medical cannabis consumption, perceived efficacy, adverse and side effects, motivation for ceasing cannabis consumption, and tobacco smoking. Results The mean monthly dosage of cannabis consumed was 42.4 grams; 95.8% of respondents reported not consuming...

Please use this link to access this publication. Abstract Introduction: Acute and long-term adverse effects of heavy cannabis use (HCU) on neurocognitive function have been suggested, as much as regional changes of brain volume. However, little is known about the relationship between impaired cognition and brain structure in individuals with HCU. Objective: Here, we investigated associations between cognition and cortical thickness (CT) in males with HCU and male controls. Methods: Twenty-six individuals with HCU and 20 controls were examined using a comprehensive neuropsychological test battery and high-resolution structural MRI at 3T. CT was calculated using the Computational Anatomy Toolbox (CAT12). Results: Individuals with HCU differed from controls with respect to verbal...

Abstract Background: Medical cannabis (MC) utilization continues to expand in the United States, as a growing body of evidence supports the use of cannabis and cannabinoids in the treatment of a range of chronic conditions. To date, gender-related differences in MC use are not widely reported, and little is known regarding physicians' support of patients' use of MC to address symptoms associated with chronic conditions. Materials and Methods: We conducted a cross-sectional online survey of MC users in Illinois (n = 361). We summarized participants' qualifying conditions, symptoms treated with MC, perceived physician support for MC use, use of MC and prescription medications, then analyzed differences by participant...

Please use this link to access this publication. Abstract Summary Adolescence and early adulthood are crucial periods of neurodevelopment characterised by functional, structural, and cognitive maturation, which helps prepare young people for adulthood. This systematic review of longitudinal studies aims to delineate neural predictors from neural consequences of cannabis and illicit substance use, as well as investigate the potential for the developing brain (at ages 10–25 years) to recover after damage. Five databases were searched to yield a total of 38 eligible studies, with some assessing multiple outcome techniques, including 22 neuroimaging, two neurophysiological, and 22 neuropsychological findings. High-quality evidence suggested that delayed or...

Please use this link to access this publication. Abstract Objective The impact of adolescent cannabis use is a pressing public health question owing to the high rates of use and links to negative outcomes. This study considered the association between problematic adolescent cannabis use and methylation. Method Using an enrichment-based sequencing approach, a methylome-wide association study (MWAS) was performed of problematic adolescent cannabis use in 703 adolescent samples from the Great Smoky Mountain Study. Using epigenomic deconvolution, MWASs were performed for the main cell types in blood: granulocytes, T cells, B cells, and monocytes. Enrichment testing was conducted to establish overlap between cannabis-associated methylation differences and variants associated with negative mental health effects of adolescent cannabis use. Results Whole-blood analyses identified...

Please use this link to access this publication. Abstract Objective The impact of adolescent cannabis use is a pressing public health question owing to the high rates of use and links to negative outcomes. This study considered the association between problematic adolescent cannabis use and methylation. Method Using an enrichment-based sequencing approach, a methylome-wide association study (MWAS) was performed of problematic adolescent cannabis use in 703 adolescent samples from the Great Smoky Mountain Study. Using epigenomic deconvolution, MWASs were performed for the main cell types in blood: granulocytes, T cells, B cells, and monocytes. Enrichment testing was conducted to establish overlap between cannabis-associated methylation differences and variants associated with negative mental health effects of adolescent cannabis use. Results Whole-blood analyses identified...