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  • Cardiovascular
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The Heart and Cannabis (THC) Cohort: Differences in Baseline Health and Behaviors by Cannabis Use

Abstract BACKGROUND: Evidence on the cardiovascular health effects of cannabis use is limited. We designed a prospective cohort study of older Veterans (66 to 68 years) with coronary artery disease (CAD) to understand the cardiovascular consequences of cannabis use. We describe the cohort construction, baseline characteristics, and health behaviors that were associated with smoking cannabis. OBJECTIVE: To understand the cardiovascular consequences of cannabis use. DESIGN: We designed a prospective cohort study of older Veterans (66 to 68 years) with CAD. PARTICIPANTS: A total of 1,015 current cannabis smokers and 3,270 non-cannabis smokers with CAD. MAIN MEASURES: Using logistic regression, we examined the association of...
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Δ9-Tetrahydrocannabinol (Δ9-THC) Improves Ischemia/Reperfusion Heart Dysfunction and Might Serve as a Cardioprotective Agent in the Future Treatment

Abstract Background: Ischemia/reperfusion (I/R) is a pivotal mechanism of organ injury during clinical stetting for example for cardiopulmonary bypasses. The generation of reactive oxygen species (ROS) during I/R induces oxidative stress that promotes endothelial dysfunction, DNA dissociation and local inflammation. In turn, those processes induce cytokine release, resulting in damage to cellular structures and cell death. One of the major psychoactive compounds of Cannabis is delta-9-tetrahydrocannabinol (ΔΔ99-THC), which is known as an anti-inflammatory mediator. Our research aimed to test if ΔΔ99-THC may be protective in the treatment of cardiovascular system dysfunction arising from I/R heart injury. Methods: Two experimental models were used: isolated rat hearts perfused with the...
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Acute effects of oral delta-9-tetrahydrocannabinol (THC) on autonomic cardiac activity and their relation to subjective and anxiogenic effects

Please use this link to access publication Abstract Cannabis is the most commonly used psychotropic drug in the United States, after alcohol. Despite its apparent sedative and calming effects, cannabis and its main psychoactive constituent, ∆9-tetrahydrocannabinol (THC) can produce serious adverse effects including tachycardia and anxiety. These effects can be especially pronounced in women, who remain underrepresented in clinical cannabinoid research. The present study is one of the first to characterize the effects of single doses of oral THC on autonomic nervous system function in healthy adult women. Occasional female cannabis users participated in three laboratory sessions in which they received oral THC (7.5 and 15 mg) and placebo. Autonomic...
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Protective effect and mechanism of cannabidiol on myocardial injury in exhaustive exercise training mice

Please use this link to access this publication. Abstract Cannabinoid diphenol (CBD) is a non-toxic main component extracted from cannabis, which has the effects of anti-inflammatory, anti-apoptosis and anti-oxidative stress. In recent years, exercise-induced myocardial injury has become a research hotspot in the field of sports medicine and sports physiology. Exercise-induced myocardial injury is closely related to oxidative stress, inflammatory response and apoptosis. However, there is no clear evidence of the relationship between CBD and exercise-induced myocardial injury. In this study, by establishing an animal model of exhaustive exercise training in mice, the protective effect of CBD on myocardial injury in mice was elaborated, and the possible molecular mechanism was discussed. After...
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Cannabidiol Inhibits Multiple Ion Channels in Rabbit Ventricular Cardiomyocytes

Abstract Cannabidiol (CBD), a major non-psychotropic cannabinoid found in the Cannabis plant, has been shown to exert anti-nociceptive, anti-psychotic, and anti-convulsant effects and to also influence the cardiovascular system. In this study, the effects of CBD on major ion currents were investigated using the patch-clamp technique in rabbit ventricular myocytes. CBD inhibited voltage-gated Na+ and Ca2+ channels with IC50 values of 5.4 and 4.8 µM, respectively. In addition, CBD, at lower concentrations, suppressed ion currents mediated by rapidly and slowly activated delayed rectifier K+ channels with IC50 of 2.4 and 2.1 µM, respectively. CBD, up to 10 μM, did not have any significant effect on inward rectifier IK1 and transient outward Ito currents. The effects of...
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Venous thromboembolism and cannabis consumption, outcomes among hospitalized patients in the United States: A nationwide analysis

Please use this link to access this publication. Abstract Venous Thromboembolism (VTE) carries significant clinical implications, and with the rise in cannabis consumption, its potential influence on VTE outcomes warrants investigation. Using the National Inpatient Sample (NIS) database (2016–2019), we analyzed 2,217,184 hospitalized VTE patients. Among these, 1.8 % (38,810) reported cannabis use. We compared demographics, comorbidities, in-hospital outcomes, and quality metrics between cannabis users and non-users with VTE. Cannabis users were chiefly younger males (average age 45 in cannabis users vs. 62 in non-cannabis users) from lower-income brackets. Notably, 5.4 % discharged against medical advice. Although in-hospital mortality was initially lower for cannabis users (2.8 % vs. 5.1 %,...
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Cannabis oil: Effects on Cannabinoid-Induced Tetrad, blood pressure and metabolic parameters in female rats fed a sucrose-rich diet

Abstract Metabolic Syndrome (MS) is one of the most commonly used names for a clinical entity that brings together or associates different disorders that increase the risk of cardiovascular disease. Cannabis sativa has been used as an herbal medicine for tens of centuries. This study aimed to analyze the effects of cannabis oil administration on cannabinoid-induced tetrad, systolic and diastolic blood pressure, and metabolic parameters in normal female rats fed a sucrose-rich diet (SRD). Female Wistar rats were fed with the one of following diets for 21 days: Reference Diet (RD): standard commercial laboratory diet, SRD, and SRD+Cannabis oil (SRD+Ca): oral administration of 1...
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Unraveling the Link: Cannabis Use Disorder and Pulmonary Embolism-Related Hospital Outcomes in Female Breast Cancer Survivors

Please use this link to access this publication: https://www.sciencedirect.com/science/article/abs/pii/S0006497123139188 Abstract Background: The use of cannabis in cancer patients has gained significant attention due to its analgesic properties, which help alleviate cancer-related pain. Studies have also shown the interference of cannabis with the coagulation system. We aimed to study the impact of cannabis use disorder (CUD) and Pulmonary embolism (PE) on outcomes in female breast cancer survivors, considering reports suggesting significant overlap between recreational and medicinal use. Our objective was to compare outcomes in CUD+ (with cannabis use disorder) and CUD- (without cannabis use disorder) cohorts to gain critical insights into this group and understand the...
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Cannabis use disorder and adverse cardiovascular outcomes: A population-based retrospective cohort analysis of adults from Alberta, Canada

Abstract Aim To measure the association between cannabis use disorder (CUD) and adverse cardiovascular disease (CVD) outcomes. Design and Setting We conducted a matched, population-based retrospective cohort study involving five linked administrative health databases from Alberta, Canada. Participants We identified participants with CUD diagnosis codes and matched them to participants without CUD codes by gender, year of birth and time of presentation to the health system. We included 29 764 pairs (n = 59 528 individuals in total). Measurements CVD events were defined by at least one incident diagnostic code within the study period (1 January 2012–31 December 2019). Covariates included comorbidity, socio-economic status, prescription medication use and health...
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Oral Cannabidiol does not Alter the Subjective, Reinforcing or Cardiovascular Effects of Smoked Cannabis

Abstract Cannabidiol (CBD), a constituent of cannabis with few psychoactive effects, has been reported in some studies to attenuate certain aspects of Δ(9)-tetrahydrocannabinol (THC) intoxication. However, most studies have tested only one dose of CBD in combination with one dose of oral THC, making it difficult to assess the nature of this interaction. Further, the effect of oral CBD on smoked cannabis administration is unknown. The objective of this multi-site, randomized, double-blind, within-subject laboratory study was to assess the influence of CBD (0, 200, 400, 800 mg, p.o.) pretreatment on the reinforcing, subjective, cognitive, and physiological effects of smoked cannabis (0.01 (inactive), 5.30-5.80% THC)....
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