RESUMO
Cannabis is well-known for its numerous therapeutic activities, as demonstrated in pre-clinical and clinical studies primarily due to its bioactive compounds. The Cannabis industry is rapidly growing; therefore, product development and extraction methods have become crucial aspects of Cannabis research. The evaluation of the current extraction methods implemented in the Cannabis industry and scientific literature to produce consistent, reliable, and potent medicinal Cannabis extracts is prudent. Furthermore, these processes must be subjected to higher levels of scientific stringency, as Cannabis has been increasingly used for various ailments, and the Cannabis industry is receiving acceptance in different countries. We comprehensively analysed the current literature and drew a critical summary of the extraction methods implemented thus far to recover bioactive compounds from medicinal Cannabis. Moreover, this review outlines the major bioactive compounds in Cannabis, discusses critical factors affecting extraction yields, and proposes future considerations for the effective extraction of bioactive compounds from Cannabis. Overall, research on medicinal marijuana is limited, with most reports on the industrial hemp variety of Cannabis or pure isolates. We also propose the development of sustainable Cannabis extraction methods through the implementation of mathematical prediction models in future studies.
Assuntos
Canabinoides/isolamento & purificação , Fracionamento Químico/métodos , Cromatografia Líquida de Alta Pressão/métodos , Maconha Medicinal/química , Compostos Fitoquímicos/isolamento & purificação , Extratos Vegetais/isolamento & purificação , HumanosRESUMO
Significant growth of interest in cannabis (Cannabis sativa L.), especially its natural anti-inflammatory and antioxidative properties, has been observed recently. This narrative review aimed to present the state of the art of research concerning the anti-inflammatory activity of all classes of cannabinoids published in the last five years. Multimodal properties of cannabinoids include their involvement in immunological processes, anti-inflammatory, and antioxidative effects. Cannabinoids and non-cannabinoid compounds of cannabis proved their anti-inflammatory effects in numerous animal models. The research in humans is missing, and the results are unconvincing. Although preclinical evidence suggests cannabinoids are of value in treating chronic inflammatory diseases, the clinical evidence is scarce, and further well-designed clinical trials are essential to determine the prospects for using cannabinoids in inflammatory conditions.
Assuntos
Analgésicos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Antioxidantes/uso terapêutico , Canabinoides/uso terapêutico , Cannabis/química , Analgésicos/química , Analgésicos/classificação , Analgésicos/isolamento & purificação , Animais , Anti-Inflamatórios/química , Anti-Inflamatórios/classificação , Anti-Inflamatórios/isolamento & purificação , Antioxidantes/química , Antioxidantes/classificação , Antioxidantes/isolamento & purificação , Canabinoides/química , Canabinoides/classificação , Canabinoides/isolamento & purificação , Humanos , Inflamação/prevenção & controle , Estrutura Molecular , Estresse Oxidativo/efeitos dos fármacos , Relação Estrutura-AtividadeRESUMO
Cannabis sativa is one of the oldest medicinal plants in the world. It was introduced into western medicine during the early 19th century. It contains a complex mixture of secondary metabolites, including cannabinoids and non-cannabinoid-type constituents. More than 500 compounds have been reported from C. sativa, of which 125 cannabinoids have been isolated and/or identified as cannabinoids. Cannabinoids are C21 terpeno-phenolic compounds specific to Cannabis. The non-cannabinoid constituents include: non-cannabinoid phenols, flavonoids, terpenes, alkaloids and others. This review discusses the chemistry of the cannabinoids and major non-cannabinoid constituents (terpenes, non-cannabinoid phenolics, and alkaloids) with special emphasis on their chemical structures, methods of isolation, and identification.
Assuntos
Alcaloides/química , Canabinoides/química , Cannabis/química , Fenóis/química , Alcaloides/isolamento & purificação , Canabinoides/isolamento & purificação , Flavonoides/química , Flavonoides/isolamento & purificação , Fenóis/isolamento & purificação , Plantas Medicinais/químicaRESUMO
Positive effect of some cannabinoids in the treatment and prophylaxis of a wide variety of oxidation-associated diseases and growing popularity of supplements containing cannabinoids, mainly cannabinoid oils (e.g. CBD oil, CBG oil), in the self-medication of humans cause a growing interest in the antioxidant properties of these compounds, especially those not showing psychotropic effects. Herein, we report the antioxidant activity of cannabigerol (CBG), cannabidiol (CBD), Δ9-tetrahydrocannabinol (Δ9-THC), cannabinol (CBN), cannabigerolic acid (CBGA), cannabinolic acid (CBDA) and Δ9-tetrahydrocannabinolic acid (Δ9-THCA) estimated by spectrophotometric methods: ABTS, DPPH, ORAC, beta-carotene CUPRAC and FRAP. The presented data prove that all the examined cannabinoids exhibit antioxidant activity manifested in their ability to scavenge free radicals, to prevent the oxidation process and to reduce metal ions. Although the intensity of these activities is not the same for the individual cannabinoids it is comparable for all of them with that of E vitamin. As results from the research, the significance of the two types of electron sources presenting in examined cannabinoids, phenolic groups and double bonds transferring electrons, depends on the type of electron-accepting species - radicals/metal ions.
Assuntos
Antioxidantes/farmacologia , Canabinoides/farmacologia , Cannabis/química , Antioxidantes/isolamento & purificação , Benzoatos , Canabidiol , Canabinoides/isolamento & purificação , Canabinol/análogos & derivados , Estrutura MolecularRESUMO
For thousands of years, Cannabis sativa has been utilized as a medicine and for recreational and spiritual purposes. Phytocannabinoids are a family of compounds that are found in the cannabis plant, which is known for its psychotogenic and euphoric effects; the main psychotropic constituent of cannabis is Δ9-tetrahydrocannabinol (Δ9-THC). The pharmacological effects of cannabinoids are a result of interactions between those compounds and cannabinoid receptors, CB1 and CB2, located in many parts of the human body. Cannabis is used as a therapeutic agent for treating pain and emesis. Some cannabinoids are clinically applied for treating chronic pain, particularly cancer and multiple sclerosis-associated pain, for appetite stimulation and anti-emesis in HIV/AIDS and cancer patients, and for spasticity treatment in multiple sclerosis and epilepsy patients. Medical cannabis varies from recreational cannabis in the chemical content of THC and cannabidiol (CBD), modes of administration, and safety. Despite the therapeutic effects of cannabis, exposure to high concentrations of THC, the main compound that is responsible for most of the intoxicating effects experienced by users, could lead to psychological events and adverse effects that affect almost all body systems, such as neurological (dizziness, drowsiness, seizures, coma, and others), ophthalmological (mydriasis and conjunctival hyperemia), cardiovascular (tachycardia and arterial hypertension), and gastrointestinal (nausea, vomiting, and thirst), mainly associated with recreational use. Cannabis toxicity in children is more concerning and can cause serious adverse effects such as acute neurological symptoms (stupor), lethargy, seizures, and even coma. More countries are legalizing the commercial production and sale of cannabis for medicinal use, and some for recreational use as well. Liberalization of cannabis laws has led to increased incidence of toxicity, hyperemesis syndrome, lung disease cardiovascular disease, reduced fertility, tolerance, and dependence with chronic prolonged use. This review focuses on the potential therapeutic effects of cannabis and cannabinoids, as well as the acute and chronic toxic effects of cannabis use on various body systems.
Assuntos
Canabinoides/uso terapêutico , Cannabis , Maconha Medicinal/uso terapêutico , Sistema Nervoso/efeitos dos fármacos , Plantas Tóxicas , Animais , Canabinoides/efeitos adversos , Canabinoides/isolamento & purificação , Cannabis/efeitos adversos , Humanos , Abuso de Maconha/metabolismo , Abuso de Maconha/fisiopatologia , Abuso de Maconha/psicologia , Maconha Medicinal/efeitos adversos , Sistema Nervoso/metabolismo , Sistema Nervoso/fisiopatologia , Síndromes Neurotóxicas/metabolismo , Síndromes Neurotóxicas/fisiopatologia , Síndromes Neurotóxicas/psicologia , Plantas Tóxicas/efeitos adversos , Receptores de Canabinoides/efeitos dos fármacos , Receptores de Canabinoides/metabolismo , Transdução de SinaisRESUMO
The Cannabis sativa plant contains more than 120 cannabinoids. With the exceptions of ∆9-tetrahydrocannabinol (∆9-THC) and cannabidiol (CBD), comparatively little is known about the pharmacology of the less-abundant plant-derived (phyto) cannabinoids. The best-studied transducers of cannabinoid-dependent effects are type 1 and type 2 cannabinoid receptors (CB1R, CB2R). Partial agonism of CB1R by ∆9-THC is known to bring about the 'high' associated with Cannabis use, as well as the pain-, appetite-, and anxiety-modulating effects that are potentially therapeutic. CB2R activation by certain cannabinoids has been associated with anti-inflammatory activities. We assessed the activity of 8 phytocannabinoids at human CB1R, and CB2R in Chinese hamster ovary (CHO) cells stably expressing these receptors and in C57BL/6 mice in an attempt to better understand their pharmacodynamics. Specifically, ∆9-THC, ∆9-tetrahydrocannabinolic acid (∆9-THCa), ∆9-tetrahydrocannabivarin (THCV), CBD, cannabidiolic acid (CBDa), cannabidivarin (CBDV), cannabigerol (CBG), and cannabichromene (CBC) were evaluated. Compounds were assessed for their affinity to receptors, ability to inhibit cAMP accumulation, ßarrestin2 recruitment, receptor selectivity, and ligand bias in cell culture; and cataleptic, hypothermic, anti-nociceptive, hypolocomotive, and anxiolytic effects in mice. Our data reveal partial agonist activity for many phytocannabinoids tested at CB1R and/or CB2R, as well as in vivo responses often associated with activation of CB1R. These data build on the growing body of literature showing cannabinoid receptor-dependent pharmacology for these less-abundant phytocannabinoids and are critical in understanding the complex and interactive pharmacology of Cannabis-derived molecules.
Assuntos
Analgésicos/farmacologia , Ansiolíticos/farmacologia , Agonistas de Receptores de Canabinoides/farmacologia , Cannabis/química , Psicotrópicos/farmacologia , Receptor CB1 de Canabinoide/genética , Receptor CB2 de Canabinoide/genética , Analgésicos/isolamento & purificação , Animais , Ansiolíticos/isolamento & purificação , Células CHO , Canabidiol/isolamento & purificação , Canabidiol/farmacologia , Agonistas de Receptores de Canabinoides/isolamento & purificação , Canabinoides/isolamento & purificação , Canabinoides/farmacologia , Cricetulus , Dronabinol/análogos & derivados , Dronabinol/isolamento & purificação , Dronabinol/farmacologia , Expressão Gênica , Humanos , Camundongos Endogâmicos C57BL , Extratos Vegetais/química , Psicotrópicos/isolamento & purificação , Receptor CB1 de Canabinoide/agonistas , Receptor CB1 de Canabinoide/metabolismo , Receptor CB2 de Canabinoide/agonistas , Receptor CB2 de Canabinoide/metabolismo , Transgenes , beta-Arrestina 2/genética , beta-Arrestina 2/metabolismoRESUMO
The phytocannabinoid Δ9-tetrahydrocannabinol (THC) was isolated and synthesized in the 1960s. Since then, two synthetic cannabinoids (SCBs) targeting the cannabinoid 1 (CB1R) and 2 (CB2R) receptors were approved for medical use based on clinical safety and efficacy data: dronabinol (synthetic THC) and nabilone (synthetic THC analog). To probe the function of the endocannabinoid system further, hundreds of investigational compounds were developed; in particular, agonists with (1) greater CB1/2R affinity relative to THC and (2) full CB1/2R agonist activity. This pharmacological profile may pose greater risks for misuse and adverse effects relative to THC, and these SCBs proliferated in retail markets as legal alternatives to cannabis (e.g., novel psychoactive substances [NPS], "Spice," "K2"). These SCBs were largely outlawed in the U.S., but blanket policies that placed all SCB chemicals into restrictive control categories impeded research progress into novel mechanisms for SCB therapeutic development. There is a concerted effort to develop new, therapeutically useful SCBs that target novel pharmacological mechanisms. This review highlights the potential therapeutic efficacy and safety considerations for unique SCBs, including CB1R partial and full agonists, peripherally-restricted CB1R agonists, selective CB2R agonists, selective CB1R antagonists/inverse agonists, CB1R allosteric modulators, endocannabinoid-degrading enzyme inhibitors, and cannabidiol. We propose promising directions for SCB research that may optimize therapeutic efficacy and diminish potential for adverse events, for example, peripherally-restricted CB1R antagonists/inverse agonists and biased CB1/2R agonists. Together, these strategies could lead to the discovery of new, therapeutically useful SCBs with reduced negative public health impact.
Assuntos
Canabinoides/uso terapêutico , Segurança do Paciente , Agonistas de Receptores de Canabinoides/farmacologia , Canabinoides/efeitos adversos , Canabinoides/síntese química , Canabinoides/isolamento & purificação , Cannabis/química , Desenvolvimento de Medicamentos , Humanos , Transtornos Relacionados ao Uso de Substâncias/prevenção & controleRESUMO
The endocannabinoid system (ECS) is natural physiological system in the humans. The presence of the ECS system involves different roles in body. The endocannabinoid system involves regulation of most of the centers, which regulates the hunger and leads to changes in the weight. In the present article, we reviewed the role of natural cannabinoid compounds in metabolic disorders and related complications. We studied variety of a plant-derived cannabinoids in treating the metabolic syndrome including stoutness, fatty acid liver diseases, insulin obstruction, dementia, hypertension, lipid abnormalities, non-alcoholic steatohepatitis, endothelial damage, and polycystic ovarian syndrome and so on. The activation of cannabinoid receptors demonstrates a significant number of beneficial approaches concerning metabolic syndrome and reduces the pro-inflammatory cytokines on account of aggravation, decreased oxidative stress and uneasiness, diminishes liver fibrosis, with reduces adiponectin. Pre-clinical investigations of plant-derived cannabinoids resulted in promising outcomes. The different distinctive plant-derived cannabinoids were discovered like cannabidiol (CBD), cannabinol (CBN), cannabichromene (CBC), and cannabidiol (CBG). It has been observed that endogenous cannabinoids and plant-derived cannabinoids have an advantageous impact on limiting the metabolic disorder arising due to lifestyle changes.
Assuntos
Agonistas de Receptores de Canabinoides/uso terapêutico , Antagonistas de Receptores de Canabinoides/uso terapêutico , Canabinoides/uso terapêutico , Endocanabinoides/metabolismo , Síndrome Metabólica/tratamento farmacológico , Extratos Vegetais/uso terapêutico , Receptores de Canabinoides/efeitos dos fármacos , Animais , Agonistas de Receptores de Canabinoides/efeitos adversos , Agonistas de Receptores de Canabinoides/isolamento & purificação , Antagonistas de Receptores de Canabinoides/efeitos adversos , Antagonistas de Receptores de Canabinoides/isolamento & purificação , Canabinoides/efeitos adversos , Canabinoides/isolamento & purificação , Agonismo Parcial de Drogas , Humanos , Síndrome Metabólica/metabolismo , Extratos Vegetais/efeitos adversos , Extratos Vegetais/isolamento & purificação , Plantas Medicinais , Receptores de Canabinoides/metabolismo , Transdução de SinaisRESUMO
Carbon dioxide supercritical fluid extraction (CO2 SFE) is a clean and cost-effective method of extracting cannabinoids from cannabis. Using design of experiment methodologies an optimised protocol for extraction of medicinal cannabis bud material (population of mixed plants, combined THC:CBD approximately 1:1.5) was developed at a scale of one kg per extraction. Key variables investigated were CO2 flow rate, extraction time and extraction pressure. A total of 15 batches were analysed for process development using a two-level, full factorial design of experiments for three variable factors over eleven batches. The initial eleven batches demonstrated that CO2 flow rate has the most influence on the overall yield and recovery of the key cannabinoids, particularly CBD. The additional four batches were conducted as replicated runs at high flow rates to determine reproducibility. The highest extraction weight of 71 g (7.1%) was obtained under high flow rate (150 g/min), with long extraction time (600 min) at high pressure (320 bar). This method also gave the best recoveries of THC and CBD. This is the first study to report the repeated extraction of large amounts of cannabis (total 15 kg) to optimise the CO2 SFE extraction process for a pharmaceutical product.
Assuntos
Cannabis/química , Cromatografia com Fluido Supercrítico/métodos , Maconha Medicinal/isolamento & purificação , Extratos Vegetais/química , Biomassa , Canabinoides/química , Canabinoides/isolamento & purificação , Cannabis/metabolismo , Maconha Medicinal/química , Pressão , Reprodutibilidade dos Testes , Projetos de Pesquisa , Fatores de TempoRESUMO
Cannabis is the most used illicit drug worldwide and its medicinal use is under discussion, being regulated in several countries. However, the psychotropic effects of Δ9-tetrahydrocannabinol (THC), the main psychoactive compound of Cannabis sativa, are of concern. Thus, the interest in the isolated constituents without psychotropic activity, such as cannabidiol (CBD) and cannabidivarin (CBDV) is growing. CBD and CBDV are lipophilic molecules with poor oral bioavailability and are mainly metabolized by cytochrome P450 (CYP450) enzymes. The pharmacodynamics of CBD is the best explored, being able to interact with diverse molecular targets, like cannabinoid receptors, G protein-coupled receptor-55, transient receptor potential vanilloid 1 channel and peroxisome proliferator-activated receptor-γ. Considering the therapeutic potential, several clinical trials are underway to study the efficacy of CBD and CBDV in different pathologies, such as neurodegenerative diseases, epilepsy, autism spectrum disorders and pain conditions. The anti-cancer properties of CBD have also been demonstrated by several pre-clinical studies in different types of tumour cells. Although less studied, CBDV, a structural analogue of CBD, is receiving attention in the last years. CBDV exhibits anticonvulsant properties and, currently, clinical trials are underway for the treatment of autism spectrum disorders. Despite the benefits of these phytocannabinoids, it is important to highlight their potential interference with relevant physiologic mechanisms. In fact, CBD interactions with CYP450 enzymes and with drug efflux transporters may have serious consequences when co-administered with other drugs. This review summarizes the therapeutic advances of CBD and CBDV and explores some aspects of their pharmacokinetics, pharmacodynamics and possible interactions. Moreover, it also highlights the therapeutic potential of CBD and CBDV in several medical conditions and clinical applications.
Assuntos
Anti-Inflamatórios/uso terapêutico , Anticonvulsivantes/uso terapêutico , Antineoplásicos Fitogênicos/uso terapêutico , Canabinoides/uso terapêutico , Cannabis/química , Dronabinol/uso terapêutico , Fármacos Neuroprotetores/uso terapêutico , Animais , Anti-Inflamatórios/isolamento & purificação , Anti-Inflamatórios/farmacocinética , Anticonvulsivantes/isolamento & purificação , Anticonvulsivantes/farmacocinética , Antineoplásicos Fitogênicos/isolamento & purificação , Antineoplásicos Fitogênicos/farmacocinética , Canabinoides/isolamento & purificação , Canabinoides/farmacocinética , Dronabinol/isolamento & purificação , Dronabinol/farmacocinética , Interações Medicamentosas , Humanos , Fármacos Neuroprotetores/isolamento & purificação , Fármacos Neuroprotetores/farmacocinéticaRESUMO
Cannabis oils, namely concentrated cannabis extracts, are getting plenty of attention because of their therapeutic potential for treatment of patients with cancer, HIV, multiple sclerosis and several other pathologies. Here we propose the use of ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) as alternative methods to the current protocols followed by pharmacists, the only authorized to manipulate standardized Cannabis. A third method, consisting of the use of Tween 20 as surfactant, was considered. Our best extraction methodology for commercial hemp extraction was applied to medicinal cannabis. Here we report the results obtained for 'Eletta campana', 'Carmagnola selezionata', Bediol®, FM2® and Bedrocan®.
Assuntos
Canabinoides/isolamento & purificação , Cannabis/química , Fracionamento Químico/métodos , Canabinoides/química , Micro-Ondas , Estrutura Molecular , Extratos Vegetais/química , Polissorbatos/química , Tensoativos/química , UltrassomRESUMO
Abstract Marijuana (Cannabis sativa) is an important annual medicinal plant that belongs to the Cannabaceae family. It contains 421 substances of 18 chemical types-the most significant compound is δ-9-tetrahydrocannabinol, which causes several effects, both in the Central Nervous System and in several peripheral locations in the organism. The objectives of this scientific review are to mention the anatomical distribution, chemical characteristics and biosynthesis of cannabinoids, as well as its actions mechanisms. The endogenous cannabinoid system, the therapeutic properties of C. sativa and its action on the nociceptive control are described. Finally, the modulators of the cannabinoid system in clinical use are indicated, together with marijuana legalization benefits.
Assuntos
Humanos , Canabinoides/isolamento & purificação , Canabinoides/uso terapêutico , Cannabis/química , Legislação de MedicamentosRESUMO
The interest on cannabinoids became evident between the 1940 and 1950 decades. Although the active substance of the plant was not known, a series of compounds with cannabinomimetic activity were synthesized, which were investigated in animals and clinically. The most widely tested was Δ6a, 10a-THC hexyl. Δ6a, 10a-THC dimethylheptyl (DMHP) antiepileptic effects were studied in several children, with positive results being obtained in some cases. DMHP differs from sinhexyl in that its side chain is DMHP instead of n-hexyl. The first cannabinoid isolated from Cannabis sativa was cannabinol, although its structure was correctly characterized several years later. Cannabidiol was isolated some years later and was subsequently characterized by Mechoulam and Shvo. In 2013, the National Academy of Medicine and the Faculty of Medicine of the National Autonomous University of Mexico, through the Seminar of Studies on Entirety, decided to carry out a systematic review on a subject that is both complex and controversial: the relationship between marijuana and health. In recent years, studies have been conducted with cannabis in several diseases: controlled clinical trials on spasticity in multiple sclerosis and spinal cord injury, chronic, essentially neuropathic, pain, movement disorders (Gilles de Latourette, dystonia, levodopa dyskinesia), asthma and glaucoma, as well as non-controlled clinical trials on Alzheimer's disease, neuroprotection, intractable hiccups, epilepsy, alcohol and opioid dependence and inflammatory processes.
El interés por los cannabinoides se hizo evidente entre las décadas de 1940 y 1950. Aunque no se conocía el principio activo de la planta, se sintetizaron compuestos con actividad cannabinomimética, los cuales fueron investigados en animales y en la clínica. El más probado fue el ∆6a,10a-THC hexilo. Las acciones antiepilépticas del ∆6a,10a-THC dimetilheptil fueron estudiadas en varios niños; en algunos casos se obtuvieron resultados positivos. El ∆6a,10a-THC dimetilheptil se diferencia del sinhexil en que su cadena lateral es dimetilheptilo en vez de n-hexilo. El primer cannabinoide aislado de Cannabis sativa fue el cannabinol, si bien su estructura fue correctamente caracterizada varios años después. El cannabidiol fue aislado algunos años más tarde y caracterizado posteriormente por Mechoulam y Shvo. Durante 2013, la Academia Nacional de Medicina y la Facultad de Medicina de la Universidad Nacional Autónoma de México, a través del Seminario de Estudios sobre la Globalidad, decidieron realizar una revisión sistemática sobre un tema tan complejo como controvertido: la relación entre la marihuana y la salud. En los últimos años se han realizado estudios con cannabis en varias enfermedades: ensayos clínicos controlados sobre espasticidad en esclerosis múltiple y sobre lesiones medulares, dolor crónico fundamentalmente neuropático y trastornos del movimiento (Gilles de Latourette, distonía, discinesia por levodopa), asma y glaucoma, así como ensayos clínicos no controlados sobre Alzheimer, neuroprotección, hipo intratable, epilepsia, dependencia al alcohol y opioides y procesos inflamatorios.
Assuntos
Canabidiol/isolamento & purificação , Canabinoides/uso terapêutico , Cannabis/química , Animais , Canabidiol/química , Canabinoides/química , Canabinoides/isolamento & purificação , Canabinol/química , Canabinol/isolamento & purificação , HumanosRESUMO
The interest on cannabinoids became evident between the 1940 and 1950 decades. Although the active substance of the plant was not known, a series of compounds with cannabinomimetic activity were synthesized, which were investigated in animals and clinically. The most widely tested was Δ6α, 10α-THC hexyl. Δ6α, 10α-THC dimethylheptyl (DMHP) antiepileptic effects were studied in several children, with positive results being obtained in some cases. DMHP differs from sinhexyl in that its side chain is DMHP instead of n-hexyl. The first cannabinoid isolated from Cannabis sativa was cannabinol, although its structure was correctly characterized several years later. Cannabidiol was isolated some years later and was subsequently characterized by Mechoulam and Shvo. In 2013, the National Academy of Medicine and the Faculty of Medicine of the National Autonomous University of Mexico, through the Seminar of Studies on Entirety, decided to carry out a systematic review on a subject that is both complex and controversial: the relationship between marijuana and health. In recent years, studies have been conducted with cannabis in several diseases: controlled clinical trials on spasticity in multiple sclerosis and spinal cord injury, chronic, essentially neuropathic, pain, movement disorders (Gilles de Latourette, dystonia, levodopa dyskinesia), asthma and glaucoma, as well as non-controlled clinical trials on Alzheimers disease, neuroprotection, intractable hiccups, epilepsy, alcohol and opioid dependence and inflammatory processes.
Assuntos
Humanos , Animais , Canabidiol/isolamento & purificação , Canabinoides/uso terapêutico , Cannabis/química , Canabidiol/química , Canabinoides/isolamento & purificação , Canabinoides/química , Canabinol/isolamento & purificação , Canabinol/químicaRESUMO
This work introduces an effective methodology for the isolation of acidic cannabinoids from fiber-type Cannabis sativa L. Supercritical fluid extraction (SFE) was initially employed to obtain an enriched extract of acidic cannabinoids. Subsequently, fractionation was performed by using centrifugal partition chromatography (CPC) with the pH-zone-refining method. The biphasic solvent system that was selected consisted of n-hexane/ethyl acetate/ethanol/water 8:2:5:5 (v/v/v/v). Trifluoroacetic acid was added as retainer in the organic stationary phase, while triethylamine was used as eluter in the aqueous mobile phase. The most promising CPC fractions containing cannabidiolic acid (CBDA) and cannabidivarinic acid (CBDVA) were further purified by liquid-liquid extraction. Following this procedure, 1.86 g of CBDA (>85%) were recovered from 9 g of extract, with 1.08 g thereof having a purity of more than 95%, as determined by HPLC-PDA analysis. Moreover, 91 mg of CBDVA with greater than 85% purity were obtained. This methodology can be efficiently used for the large-scale purification of CBDA and after minor modifications could be readily adaptable for the isolation of other acidic cannabinoids, based on their ionizable character.
Assuntos
Canabinoides/isolamento & purificação , Cannabis/química , Técnicas de Química Analítica/métodos , Cromatografia Líquida , Extratos Vegetais/isolamento & purificação , Canabinoides/química , Técnicas de Química Analítica/instrumentação , Cromatografia Líquida de Alta Pressão , Concentração de Íons de Hidrogênio , Extração Líquido-Líquido , Extratos Vegetais/química , Solventes/químicaRESUMO
BACKGROUND AND PURPOSE: Duchenne muscular dystrophy (DMD), caused by dystrophin deficiency, results in chronic inflammation and irreversible skeletal muscle degeneration. Moreover, the associated impairment of autophagy greatly contributes to the aggravation of muscle damage. We explored the possibility of using non-euphoric compounds present in Cannabis sativa, cannabidiol (CBD), cannabidivarin (CBDV) and tetrahydrocannabidivarin (THCV), to reduce inflammation, restore functional autophagy and positively enhance muscle function in vivo. EXPERIMENTAL APPROACH: Using quantitative PCR, western blots and [Ca2+ ]i measurements, we explored the effects of CBD and CBDV on the differentiation of both murine and human skeletal muscle cells as well as their potential interaction with TRP channels. Male dystrophic mdx mice were injected i.p. with CBD or CBDV at different stages of the disease. After treatment, locomotor tests and biochemical analyses were used to evaluate their effects on inflammation and autophagy. KEY RESULTS: CBD and CBDV promoted the differentiation of murine C2C12 myoblast cells into myotubes by increasing [Ca2+ ]i mostly via TRPV1 activation, an effect that undergoes rapid desensitization. In primary satellite cells and myoblasts isolated from healthy and/or DMD donors, not only CBD and CBDV but also THCV promoted myotube formation, in this case, mostly via TRPA1 activation. In mdx mice, CBD (60 mg·kg-1 ) and CBDV (60 mg·kg-1 ) prevented the loss of locomotor activity, reduced inflammation and restored autophagy. CONCLUSION AND IMPLICATIONS: We provide new insights into plant cannabinoid interactions with TRP channels in skeletal muscle, highlighting a potential opportunity for novel co-adjuvant therapies to prevent muscle degeneration in DMD patients. LINKED ARTICLES: This article is part of a themed section on 8th European Workshop on Cannabinoid Research. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.10/issuetoc.
Assuntos
Canabidiol/farmacologia , Canabinoides/farmacologia , Cannabis/química , Dronabinol/análogos & derivados , Músculo Esquelético/efeitos dos fármacos , Distrofia Muscular de Duchenne/tratamento farmacológico , Mioblastos/efeitos dos fármacos , Animais , Cálcio/metabolismo , Canabidiol/isolamento & purificação , Canabinoides/isolamento & purificação , Diferenciação Celular/efeitos dos fármacos , Linhagem Celular , Relação Dose-Resposta a Droga , Dronabinol/isolamento & purificação , Dronabinol/farmacologia , Distrofina/genética , Endocanabinoides/metabolismo , Humanos , Masculino , Camundongos , Força Muscular/efeitos dos fármacos , Força Muscular/genética , Músculo Esquelético/metabolismo , Distrofia Muscular de Duchenne/metabolismo , Mioblastos/metabolismo , Canais de Potencial de Receptor Transitório/metabolismoRESUMO
A simple, quick and low cost procedure was developed for the extraction of Δ9-tetrahydrocannabinol, cannabidiol, and cannabinol from marijuana samples, based on the use of a hard-cap espresso extraction with 2-propanol. After extraction, cannabinoids were directly determined after appropriate dilution by gas-chromatography-mass spectrometry, reaching a limit of detection from 0.03 to 0.05â¯mgâ¯g-1. Extraction efficiency was evaluated by the comparison of results obtained for seized samples by the proposed method and a reference methodology based on ultrasound-assisted extraction. Moreover, ion mobility was proposed for the rapid and sensitive determination of Δ9-tetrahydrocannabinol and cannabidiol providing a quick response for the analysis of seized marijuana samples in 1â¯min, including extraction, dilution and determination.
Assuntos
Canabinoides/isolamento & purificação , Cannabis/química , Fracionamento Químico/instrumentação , Canabinoides/química , Café/química , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Fatores de TempoRESUMO
PURPOSE: The recent release of a medical cannabis strain has given a new impulse for the study of cannabis in Italy. The National Health Service advises to consume medical cannabis by vaporizing, in decoction or oil form. This is the first study that explores the pharmacokinetics and tolerability of a single oral dose of cannabis as decoction (200 ml) or in olive oil (1 ml), as a first step to improve the prescriptive recommendations. METHODS: This is a single-center, open-label, two-period crossover study designed to assess the pharmacokinetics and tolerability of oral cannabis administered to 13 patients with medication overuse headache (MOH). A liquid chromatography tandem-mass spectrometry (LC-MS/MS) method was conducted for the quantification of THC, CBD, 11-OH-THC, THC-COOH, THC-COOH-glucuronide, THCA-A, and CBDA. Blood pressure, heart rate, and a short list of symptoms by numerical rating scale (NRS) were assessed. RESULTS: Decoctions of cannabis showed high variability in cannabinoids content, compared to cannabis oil. For both preparations, THCA-A and CBDA were the most widely absorbed cannabinoids, while THC and CBD were less absorbed. The most important differences concern the bioavailability of THC, higher in oil (AUC0-24 7.44, 95% CI 5.19, 9.68) than in decoction (AUC0-24 3.34, 95% CI 2.07, 4.60), and the bioavailability of CBDA. No serious adverse events were reported. CONCLUSIONS: Cannabis decoction and cannabis oil showed different pharmacokinetic properties, as well as distinct consequences on patients. This study was performed in a limited number of patients; future studies should be performed to investigate the clinical efficacy in larger populations.
Assuntos
Canabinoides/isolamento & purificação , Cannabis/química , Transtornos da Cefaleia Secundários/tratamento farmacológico , Extratos Vegetais/administração & dosagem , Administração Oral , Adulto , Área Sob a Curva , Disponibilidade Biológica , Canabinoides/administração & dosagem , Canabinoides/farmacocinética , Cromatografia Líquida/métodos , Estudos Cross-Over , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Extratos Vegetais/efeitos adversos , Extratos Vegetais/farmacocinética , Espectrometria de Massas em Tandem/métodosRESUMO
C. sativa threshing residues were biorefined by consecutive supercritical carbon dioxide (SFE-CO2) pressurised liquid (PLE) and enzyme-assisted extractions (EAE). SFE-CO2 at optimised parameters yielded 8.3g/100g of lipophilic fraction containing 0.2 and 2.2g of cannabidiol and cannabidiolic acid per 100g of threshing residues, respectively. The recovery of cannabinoids from plant material was >93%. PLE gave 4.3 and 18.9g/100g of flavonoid-containing polar extracts, while EAE added 20.2% (w/w) of water-soluble constituents and increased the release of mono- and disaccharides by up to 94%. Antioxidant capacity of non-polar and polar fractions was in the range of 1.3-23.5mg gallic acid equivalents/g DW and 0.6-205.2mg Trolox equivalents/g DW, with the highest activities of PLE-EtOH/H2O extract. The combined SFE-CO2, PLE and EAE reduced antioxidant capacity of starting plant material by 90-99%, showing that suggested multistep fractionation procedure is efficient in the recovery of a major part of the antioxidatively active constituents from hemp threshing residues.
Assuntos
Antioxidantes/isolamento & purificação , Biotecnologia/métodos , Canabinoides/isolamento & purificação , Cannabis/química , Fracionamento Químico/métodos , Antioxidantes/química , Canabidiol/isolamento & purificação , Dióxido de Carbono/química , Etanol/química , Extratos Vegetais/química , Solubilidade , Água/químicaRESUMO
There has been a resurgence in interest and use of the cannabis plant for medical purposes. However, an in-depth understanding of plant contaminants and toxin effects on stability of plant compounds and human bioavailability is needed. This systematic review aims to assess current understanding of the contaminants of cannabis and their effect on human health, leading to the identification of knowledge gaps for future investigation. A systematic search of seven indexed biological and biomedical databases and the Cochrane library was undertaken from inception up to December 2017. A qualitative synthesis of filtered results was undertaken after independent assessment for eligibility by two reviewers. The common cannabis contaminants include microbes, heavy metals and pesticides. Their direct human toxicity is poorly quantified but include infection, carcinogenicity, reproductive and developmental impacts. Cannabis dosing formulations and administration routes affect the transformation and bioavailability of contaminants. There may be important pharmacokinetic interactions between the alkaloid active ingredients of cannabis (i.e. phytocannabinoids) and contaminants but these are not yet identified nor quantified. There is significant paucity in the literature describing the prevalence and human impact of cannabis contaminants. Advances in the availability of cannabis globally warrant further research in this area, particularly when being used for patients.