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  • Cannabis Use Disorder, Cardiovascular, Psychosis, Pulmonary Function, Safety
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Adverse Impact of Cannabis on Human Health

ABSTRACT Cannabis, the most commonly used recreational drug, is illicit in many areas of the world. With increasing decriminalization and legalization, cannabis use is increasing in the United States and other countries. The adverse effects of cannabis are unclear because its status as a Schedule 1 drug in the United States restricts research. Despite a paucity of data, cannabis is commonly perceived as a benign or even beneficial drug. However, recent studies show that cannabis has adverse cardiovascular and pulmonary effects and is linked with malignancy. Moreover, case reports have shown an association between cannabis use and neuropsychiatric disorders. With growing availability, cannabis misuse...
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Acute and subacute bronchial effects of oral cannabinoids

Please use this link to access this publication. Abstract The bronchodilating activity of oral cannabinoids was evaluated in three double-blind experiments that involved the study of dose-response and interactive relationships and the potential development of tolerance. Data indicated that ▵8-tetrahydrocannabinol (▵8-THC), cannabinol (CBN), and cannabidiol (CBD) in maximal doses of 75 mg, 1200 mg, and 1200 mg, respectively, did not induce significant dose-related physiologic effects in experienced marijuana smokers. ▵8-THC (75 mg) was, however, associated with bronchodilation, tachycardia, and peak highs less than that after ▵9-tetrahydrocannabinol (▵9-THC). The combinations of CBN and CBD with low-dose ▵9-THC (5 mg) did not induce significant bronchodilation but...
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Cannabis effectiveness on immunologic potency of pulmonary contagion

Please use this link to access this publication. Abstract Respiratory illnesses and its repercussions are becoming more prevalent worldwide. It is necessary to research both innovative treatment and preventative techniques. Millions of confirmed cases and fatalities from the COVID-19 epidemic occurred over the previous two years. According to the review research, cannabinoids are a class of medicines that should be considered for the treatment of respiratory conditions. Cannabinoids and inhibitors of endocannabinoid degradation have illustrated advantageous anti-inflammatory, asthma, pulmonary fibrosis, and pulmonary artery hypotension in numerous studies (in vitro and in vivo). It has been also noted that CB2 receptors on macrophages and T-helper cells may...
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Pulmonary effects of inhaled cannabis smoke

Please use this link to access this publication. ABSTRACT Background: The smoke generated from cannabis delivers biologically active cannabinoids and a number of combustion-derived toxins, both of which raise questions regarding the impact of cannabis smoking on lung function, airway inflammation and smoking-related lung disease. Objectives: Review the potential effects of cannabis smoking on respiratory symptoms, lung function, histologic/molecular alterations in the bronchial mucosa, smoking-related changes in alveolar macrophage function and the potential clinical impact of cannabis smoking on chronic obstructive pulmonary disease, lung cancer and pulmonary infections. Methods: Focused literature review. Results: The carcinogens and respiratory toxins in cannabis and tobacco smoke are similar but the smoking...
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Cannabidiol Ameliorates Monocrotaline-Induced Pulmonary Hypertension in Rats

Abstract Cannabidiol (CBD) is known for its vasorelaxant (including in the human pulmonary artery), anti-proliferative and anti-inflammatory properties. The aim of our study was to examine the potential preventive effect of chronic CBD administration (10 mg/kg/day for three weeks) on monocrotaline (MCT)-induced pulmonary hypertension (PH) rats. PH was connected with elevation of right ventricular systolic pressure; right ventricle hypertrophy; lung edema; pulmonary artery remodeling; enhancement of the vasoconstrictor and decreasing vasodilatory responses; increases in plasma concentrations of tissue plasminogen activator, plasminogen activator inhibitor type 1 and leukocyte count; and a decrease in blood oxygen saturation. CBD improved all abovementioned changes induced by PH except...
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Differential Effects of Cannabis and Tobacco on Lung Function in Mid–Adult Life

Abstract Rationale: Evidence suggests that the effects of smoking cannabis on lung function are different from tobacco. However, long-term follow-up data are scarce and mostly based on young adults. Objectives: To assess the effects of cannabis and tobacco on lung function in mid–adult life. Methods: Cannabis and tobacco use were reported at ages 18, 21, 26, 32, 38, and 45 years in a population-based cohort study of 1,037 participants. Spirometry, plethysmography, and carbon monoxide transfer factor were measured at age 45. Associations between lung function and cannabis use were adjusted for tobacco use. Measurements and Main Results: Data were available from 881 (88%) of 997 surviving participants. Cumulative...
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Cannabinoid receptor 2 signal promotes type 2 immunity in the lung

Abstract Type 2 immunity in the lung protects against pathogenic infection and facilitates tissue repair, but its dysregulation may lead to severe human diseases. Notably, cannabis usage for medical or recreational purposes has increased globally. However, the potential impact of the cannabinoid signal on lung immunity is incompletely understood. Here, we report that cannabinoid receptor 2 (CB2) is highly expressed in group 2 innate lymphoid cells (ILC2s) of mouse and human lung tissues. Of importance, the CB2 signal enhances the IL-33-elicited immune response of ILC2s. In addition, the chemogenetic manipulation of inhibitory G proteins (Gi) downstream of CB2 produces a similarly promotive effect. Conversely, the genetic deletion of CB2 mitigates the IL-33-elicited type 2...
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Modulation of pulmonary immune function by inhaled cannabis products and consequences for lung disease

Abstract The lungs, in addition to participating in gas exchange, represent the first line of defense against inhaled pathogens and respiratory toxicants. Cells lining the airways and alveoli include epithelial cells and alveolar macrophages, the latter being resident innate immune cells important in surfactant recycling, protection against bacterial invasion and modulation of lung immune homeostasis. Environmental exposure to toxicants found in cigarette smoke, air pollution and cannabis can alter the number and function of immune cells in the lungs. Cannabis (marijuana) is a plant-derived product that is typically inhaled in the form of smoke from a joint. However, alternative delivery methods such as vaping,...
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Bronchodilator Effect of Delta-Tetrahydrocannabinol

The principal psycho-active constituent of cannabis, ∆-trans-tetrahydrocannabinol (∆-THC) has bronchodilator activity in man, both in normal subjects (Vachon, Fitzgerald, Solliday, Gould & Gaensler, 1973; Tashkin, Shapiro & Frank, 1973) and in asthmatic patients (Tashkin, Shapiro & Frank, 1974). It may be given orally, but in order to achieve significant effects, doses in excess of 10 mg must be used and patients then experience psychic disturbance. A dose of 200 ug, is an effective bronchodilator when delivered by inhalation from a pressurized aerosol, and no measurable systemic absorption takes place (Williams, Hartley & Graham, 1976). Higher doses frequently cause transient coughing and chest discomfort in...
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Monoacylglycerol Lipase (MAGL) Inhibition Attenuates Acute Lung Injury in Mice

Abstract Endocannabinoid signaling is terminated by enzymatic hydrolysis, a process that, for 2-Arachidonoylglycerol (2-AG), is mediated by monoacylglycerol lipase (MAGL). The piperidine carbamate, 4-nitrophenyl- 4-(dibenzo[d] [1,3]dioxol-5-yl (hydroxy) methyl) piperidine- 1-carboxylate (JZL184), is a drug that inhibits MAGL and presents high potency and selectivity. Thus, JZL184 increases the levels of 2-AG, an endocannabinoid that acts on the CB1 and CB2 cannabinoid receptors. Here, we investigated the effects of MAGL inhibition, with a single dose (16 mg/kg, intraperitoneally (i.p.)) of JZL184, in a murine model of lipopolysaccharide (LPS) -induced acute lung injury (ALI) 6, 24 and 48 hours after the inflammatory insult. Treatment with JZL184 decreased...
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