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  • Cardiovascular, Safety, Stress
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Effects of regular cannabis and nicotine use on acute stress responses: chronic nicotine, but not cannabis use, is associated with blunted adrenocortical and cardiovascular responses to stress

Please use this link to access this publication. Abstract Rationale Cannabis is one of the most prevalent substances used by tobacco smokers and, in light of the growing list of states and territories legalizing cannabis, it is expected that co-use of cannabis and nicotine will escalate significantly and will lead to continuing challenges with tobacco use. Objectives This study was conducted to examine the interactive effects of chronic cannabis and nicotine use on adrenocortical, cardiovascular, and psychological responses to stress and to explore sex differences in these effects. Methods Participants (N = 231) included cannabis-only users, nicotine-only users, co-users of both substances, and a non/light-user comparison...
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Cannabis use is associated with prevalent coronary artery disease

Please use this link to access this publication. Abstract Background Cannabis is associated with risk of acute coronary syndrome in observational studies. However, its association with prevalent coronary artery disease (CAD) remains unclear. We hypothesized that cannabis use is associated with prevalent CAD. Methods This analysis included 12,543 participants (age 39.3 ± 11.6 years, 48.8% male, 35.3% Caucasians) from The National Health and Nutrition Examination Survey (NHANES). Cannabis use was self-reported. Prevalent CAD was defined by physician diagnosis. The association between cannabis use and CAD was tested for using multivariable logistic regression. Results About 53.1% (n = 6,650) of participants were ever cannabis users...
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Relation of Cannabis Use to Elevated Atherosclerotic Cardiovascular Disease Risk Score

Please use this link to access this publication. Abstract: We hypothesized that cannabis use is associated with cardiovascular disease (CVD) risk factors. This could explain the reported link between cannabis and cardiovascular events including stroke and myocardial infarction. This analysis included 7,159 participants (age 37.8 ± 12.4 years, 48.6% men, and 61.5% Caucasian) from the National Health and Nutrition Examination Survey years 2011 to 2018. Cannabis use was defined by self-report. Participants with a history of stroke or myocardial infarction were excluded. Composite CVD risk was assessed using the American College of Cardiology/American Heart Association 10-year atherosclerotic cardiovascular risk (ASCVD) score. Participants were classified...
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Intrauterine cannabis exposure and fetal and maternal blood flow: a case–control study

Abstract Introduction Cannabis consumption during pregnancy increases the risk of pregnancy and neonatal complications. Since the underlying mechanism is unknown, the purpose of this study is to evaluate the changes in maternal and fetal blood flow in pregnancies exposed to cannabis, Δ9-tetrahydrocannabinol (THC). Material and methods A case–control study between 2013 and 2020, included women with continued cannabis exposure during the pregnancies, defined by qualitative detection of THC in urine (Cannabis Group), and low-risk pregnancy women divided into tobacco smokers (Tobacco Group), and non-tobacco smokers (Control Group). We evaluated the association between cannabis consumption and maternal and fetal blood flow parameters measured by Doppler...
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Treatment with Cannabidiol Results in an Antioxidant and Cardioprotective Effect in Several Pathophysiologies

Abstract Cannabis sativa has chemically active compounds called cannabinoids, where Δ9- tetrahydrocannabinol (THC) and Cannabidiol (CBD) are the major ones responsible for the various pharmacological effects. The endocannabinoid system is an endogenous system considered a unique and widespread homeostatic physiological regulator. It is made up of type 1 (CB1) and type 2 (CB2) cannabinoid receptors. CBD, in turn, has a low affinity for CB1 and CB2 receptors, and regulates the effects arising from THC as a CB1 partial agonist, which are tachycardia, anxiety, and sedation. It also acts as a CB2 inverse agonist, resulting in anti-inflammatory effects. Furthermore, its anticonvulsant, neuroprotective, antipsychotic, antiemetic, anxiolytic,...
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Marijuana and endothelial dysfunction: new mechanism and therapy

Please use this link to access publication Abstract Marijuana (cannabis) can cause cardiovascular side effects, yet the mechanisms and treatments remain poorly understood. In a recent study published in Cell, Wei et al. discovered that soy isoflavone genistein attenuates Δ9-tetrahydrocannabinol (Δ9-THC, a main constituent from marijuana)-induced endothelial dysfunction and atherosclerosis by directly antagonizing peripheral cannabinoid receptor 1, demonstrating a therapeutic potential for ameliorating the cardiovascular side effects of cannabis.
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The cannabis paradox: contrasting role for marijuana in cardiovascular disease

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Metabolites of Cannabis Induce Cardiac Toxicity and Morphological Alterations in Cardiac Myocytes

Abstract: Cannabis is one of the most commonly used recreational drugs worldwide. Rrecent epidemiology studies have linked increased cardiac complications to cannabis use. However, this literature is predominantly based on case incidents and post-mortem investigations. This study elucidates the molecular mechanism of ∆9-tetrahydrocannabinol (THC), and its primary metabolites 11-Hydroxy- ∆9-THC (THC-OH) and 11-nor-9-carboxy-∆ 9 -tetrahydrocannabinol (THC-COOH). Treatment of cardiac myocytes with THC-OH and THC-COOH increased cell migration and proliferation (p < 0.05), with no effect on cell adhesion, with higher doses (250–100 ng/mL) resulting in increased cell death and significant deterioration in cellular architecture. Conversely, no changes in cell morphology or viability were observed...
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Analysis of toxicity effects of delta-9-tetrahydrocannabinol on isolated rat heart mitochondria

Please use this link to access publication Abstract Mitochondria have the main roles in myocardial tissue homeostasis, through providing ATP for the vital enzymes in intermediate metabolism, contractile apparatus and maintaining ion homeostasis. Mitochondria-related cardiotoxicity results from the exposure with illicit drugs have previously reported. These illicit drugs interference with processes of normal mitochondrial homeostasis and lead to mitochondrial dysfunction and mitochondrial-related oxidative stress. Cannabis consumption has been shown to cause ventricular tachycardia, to increase the risk of myocardial infarction (MI) and potentially sudden death. Here, we investigated this hypothesis that delta-9-tetrahydrocannabinol (Delta-9-THC) as a main cannabinoid found in cannabis could directly cause mitochondrial...
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Vaping tetrahydrocannabinol unmasks Brugada pattern and induces ventricular fibrillation in Brugada syndrome: a case report

Abstract Background Fever, alcohol, and sodium channel blockers can unmask Brugada pattern and may also induce arrhythmias in Brugada syndrome. We report a case of unmasked Type-1 Brugada pattern presenting with ventricular fibrillation that was induced by a tetrahydrocannabinol vaping. Case summary A 48-year-old male with a past medical history of hypertension treated with hydrochlorothiazide and back pain controlled with tetrahydrocannabinol vaping presented with sudden cardiac arrest from ventricular fibrillation, which was terminated with defibrillation. Electrocardiogram after resuscitation showed a new Type-1 Brugada pattern compared to a previous normal baseline electrocardiogram. Echocardiography and coronary angiogram were unremarkable. Complete blood count and chemistries were unremarkable...
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