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Tetrahydrocannabinol

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https://www.readbyqxmd.com/read/28445853/cannabidiol-%C3%AE-9-tetrahydrocannabinol-interactions-on-acute-pain-and-locomotor-activity
#1
Stevie C Britch, Jenny L Wiley, Zhihao Yu, Brian H Clowers, Rebecca M Craft
BACKGROUND: Previous studies suggest that cannabidiol (CBD) may potentiate or antagonize Δ(9)-tetrahydrocannabinol's (THC) effects. The current study examined sex differences in CBD modulation of THC-induced antinociception, hypolocomotion, and metabolism. METHODS: In Experiment 1, CBD (0, 10 or 30mg/kg) was administered 15min before THC (0, 1.8, 3.2, 5.6 or 10mg/kg), and rats were tested for antinociception and locomotion 15-360min post-THC injection. In Experiments 2 and 3, CBD (30mg/kg) was administered 13h or 15min before THC (1...
April 15, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28445405/significant-tic-reduction-in-an-otherwise-treatment-resistant-patient-with-gilles-de-la-tourette-syndrome-following-treatment-with-nabiximols
#2
Ahmad Seif Kanaan, Ewgeni Jakubovski, Kirsten Müller-Vahl
Early anecdotal reports and preliminary studies suggested that cannabinoid-based medicines such as delta-9-tetrahydrocannabinol (THC) are effective in the treatment of Gilles de la Tourette syndrome (TS). We report a single case study of a patient with otherwise treatment-resistant TS successfully treated with nabiximols. Our patient was a 22-year-old male suffering from severe and complex TS. Treatment with nabiximols was commenced at a dose of 1 puff/day (= 100 μL containing 2.7 mg THC and 2.5 mg cannabidiol (CBD)) and slowly increased up to a dosage of 3 × 3 puffs/day (= 24...
April 26, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28442584/apparent-cb1-receptor-rimonabant-affinity-estimates-combination-with-thc-and-synthetic-cannabinoids-in-the-mouse-in-vivo-triad-model
#3
Travis W Grim, Anthony J Morales, Brian F Thomas, Jenny L Wiley, Gregory W Endres, Sidney S Negus, Aron H Lichtman
Synthetic cannabinoids (SCs) represent an emerging class of abused drugs associated with psychiatric complications and other substantial health risks. These ligands are largely sold over the internet for human consumption presumably because of their high cannabinoid 1 receptor (CB1R) affinity and potency in eliciting similar pharmacological effects as Δ9-tetrahydrocannabinol (THC), while circumventing laws illegalizing this plant. Factors potentially contributing to the increased prevalence of SC abuse and related hospitalizations, such as increased CB1R efficacy and non-CB1R targets, highlight the need for quantitative pharmacological analyses to determine receptor mediation of the pharmacological effects of cannabinoids...
April 25, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28442116/determination-of-delta-9-tetrahydrocannabinol-content-of-cannabis-seizures-in-egypt
#4
Ahmed M A Souleman, Alaa El-Din M Gaafar, Omar M Abdel-Salam, Shaimaa A ElShebiney
OBJECTIVE: To determine the delta-9-tetrahydrocannabinol (THC) content of cannabis seizures in Egypt. METHODS: Unheated and heated extracts of cannabis seizures were prepared from the dried flowering tops and leaves (marijuana) or from the resin (hashish) and subjected to analysis using high performance liquid chromatography (HPLC). RESULTS: The heated resin extract had the peak of THC in a relative ratio of 31.34%, while extracting the resin directly without heating contained only 18...
March 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28441106/jwh-122-consumption-adverse-effects-a-case-of-hallucinogen-persisting-perception-disorder-five-year-follow-up
#5
Maurizio Coppola, Raffaella Mondola
Synthetic cannabinoid receptor agonists are a heterogeneous group of psychotropic drugs functionally related to Δ9-tetrahydrocannabinol. These substances, marketed as cannabis substitutes, have been associated with numerous cases of severe intoxication and death across the world. In our article, we describe a case of hallucinogen persisting perception disorder developing in a natural cannabis user after consumption of JWH-122, a naphthoylindole largely used since 2010. Clinical symptomatology persisted for about four years and was alleviated through treatment with clonazepam...
April 25, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28440193/neurocognitive-correlates-in-driving-under-the-influence-of-cannabis
#6
Francesco Paolo Busardò, Manuela Pellegrini, Julia Klein, Natale Mario di Luca
Delta (9)-tetrahydrocannabinol is the main psychoactive compound in cannabis and is commonly identified in blood samples from arrested drivers assumed to drive under the influence of drugs. Changing social norms towards cannabis and higher acceptability towards the drug emphasize the need for comprehensive understanding of the severe neurocognitive and psychomotor effects caused by cannabis and how these effects are correlated to driving skills and performance. In this review, PubMed, Cochrane Central, Scopus, Web of Science, Science Direct and EMBASE databases were used to identify and select publications up to January 2017 dealing with acute and chronic neurocognitive effects induced by cannabis and ability to drive...
April 23, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28438413/functional-redundancy-between-canonical-endocannabinoid-signaling-systems-in-the-modulation-of-anxiety
#7
Gaurav Bedse, Nolan D Hartley, Emily Neale, Andrew D Gaulden, Toni A Patrick, Philip J Kingsley, Md Jashim Uddin, Niels Plath, Lawrence J Marnett, Sachin Patel
BACKGROUND: Increasing the available repertoire of effective treatments for mood and anxiety disorders represents a critical unmet need. Pharmacological augmentation of endogenous cannabinoid (eCB) signaling has been suggested to represent a novel approach to the treatment of anxiety disorders; however, the functional interactions between two canonical eCB pathways mediated via anandamide (N-arachidonylethanolamine [AEA]) and 2-arachidonoylglycerol (2-AG) in the regulation of anxiety are not well understood...
March 15, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28438101/intravenous-administration-of-cannabis-and-lethal-anaphylaxis
#8
John D Gilbert, Marc Grabowski, Roger W Byard
Cannabis allergy appears to be increasing. A 33-year-old woman is reported who collapsed and died shortly after injecting herself with a cannabis solution prepared by pouring boiling water onto plant material. There were no significant findings at autopsy, except for a single recent venepuncture wound in the left cubital fossa. Toxicological examination of the blood revealed low levels of methylamphetamine and amphetamine with tetrahydrocannabinol (Δ(9)-THC) and 11-nor-9-carboxy-Δ(9)-THC, and no opiates. The syringe used by the decedent contained Δ(9)-THC...
April 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/28433786/mucoadhesive-tetrahydrocannabinol-loaded-nlc-formulation-optimization-and-long-term-physicochemical-stability
#9
Ghaith Hommoss, Sung Min Pyo, Rainer H Müller
Tetrahydrocannabinol (THC) is used to treat pain in cancer patients. On the market there are mainly oral formulations. Especially to treat the problematic breakthrough pain in cancer, an easy applicable formulation with fast onset is desired. This formulation was developed as an aqueous nasal spray using nanostructured lipid carriers (NLC). The NLC were prepared with cetyl palmitate, having good miscibility with the oily THC and yielding particles with 1 year physical long-term stability. To make the particles mucoadhesive, small particles with diameters of about 200 nm were produced and additionally their surface positively charged using a cationic stabilizer...
April 19, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28424834/effect-of-prior-foot-shock-stress-and-%C3%AE-9-tetrahydrocannabinol-cannabidiolic-acid-and-cannabidiol-on-anxiety-like-responding-in-the-light-dark-emergence-test-in-rats
#10
Erin M Rock, Cheryl L Limebeer, Gavin N Petrie, Lauren A Williams, Raphael Mechoulam, Linda A Parker
RATIONALE: Cannabis is commonly used by humans to relieve stress. OBJECTIVES AND METHODS: Here, we evaluate the potential of intraperitoneally (i.p.) administered Δ(9)-tetrahydrocannabiol (THC) and cannabidiolic acid (CBDA, the precursor of cannabidiol [CBD]) to produce dose-dependent effects on anxiety-like responding in the light-dark (LD) emergence test of anxiety-like responding in rats, when administered acutely or chronically (21 days). As well, we evaluate the potential of THC, CBDA, and CBD to reduce anxiogenic responding produced by foot shock (FS) stress 24 h prior to the LD test...
April 20, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28419252/sensitive-determination-of-cannabinoids-in-whole-blood-by-lc-ms-ms-after-rapid-removal-of-phospholipids-by-filtration
#11
Lambert K Sørensen, Jørgen B Hasselstrøm
Direct analysis of Δ9-tetrahydrocannabinol (THC) and other cannabinoids in crude acetonitrile extracts of whole blood by liquid chromatography-tandem mass spectrometry using pneumatically assisted electrospray ionization (LC-ESI-MS-MS) was subjected to pronounced ion suppression from co-eluting phospholipids (PLs). The interferences were mainly caused by the lysophosphatidylcholine and lysophosphatidylethanolamine classes of PLs. The PLs were easily removed from crude extracts by filtration through a sorbent with Lewis acid properties, which typically increased the THC and cannabinol (CBN) signal intensities by a factor of 5...
April 17, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28412921/synthetic-cannabinoids-psychopharmacology-clinical-aspects-and-psy-chotic-onset
#12
Giovanni Martinotti, Rita Santacroce, Duccio Papanti, Yasmine Elgharably, Mariya Prilutskaya, Ornella Corazza
Synthetic Cannabinoids (SC) are the widest and most diffused class of Novel Psychoactive Substances. SC are chemically heterogeneous and structurally dissimilar from delta-9-tetrahydrocannabinol, being full agonists of the endocannabinoid system receptors CB1 and CB2. Desired effects include euphoria, talkativeness, feelings of joy and laughter, relaxation. With respect to cannabis, SC intake may also be associated with quicker arise of the effects, shorter duration of action, and larger levels of hangover...
April 13, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28412920/neuropsychiatric-and-general-interactions-of-natural-and-synthetic-cannabinoids-with-drugs-of-abuse-and-medicines
#13
Ana Lucia Arellano, Esther Papaseit, Anna Romaguera, Marta Torrens, Magi Farré
Cannabis is the most widely used illicit drug. The two most important natural cannabinoids are delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD). The THC content of cannabis has been increasing during the last years and recently appeared in the market a series of synthetic cannabinoids with potent agonist activity. Recreational users frequently combine cannabis with other drugs of abuse as alcohol, amphetamines and derivatives, nicotine and cocaine. In addition these subjects can be taking medicines for acute and chronic medical conditions...
April 13, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28412919/neurological-disorders-in-medical-use-of-cannabis-an-update
#14
Renata Solimini, Maria Concetta Rotolo, Simona Pichini, Roberta Pacifici
Medical cannabis is increasingly used as a treatment or adjunct treatment with different levels of efficacy in several neurological disorders or related symptoms (such as multiple sclerosis, autism, Parkinson and Alzheimer disease, Tourette's syndrome, Huntington's disease, neuropathic pain, epilepsy, headache), as well as in other medical conditions (e.g. nausea and vomiting, glaucoma, appetite stimulation, cancer, inflammatory conditions, asthma). Nevertheless, a number of neurological adverse effects from use of medical cannabis on the short- and on the long- term have been reported, in addition to other adverse health events...
April 13, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28407543/subjective-and-physiological-effects-and-expired-carbon-monoxide-concentrations-in-frequent-and-occasional-cannabis-smokers-following-smoked-vaporized-and-oral-cannabis-administration
#15
Matthew N Newmeyer, Madeleine J Swortwood, Osama A Abulseoud, Marilyn A Huestis
BACKGROUND: Although smoking is the most common cannabis administration route, vaporization and consumption of cannabis edibles are common. Few studies directly compare cannabis' subjective and physiological effects following multiple administration routes. METHODS: Subjective and physiological effects, and expired carbon monoxide (CO) were evaluated in frequent and occasional cannabis users following placebo (0.001% Δ(9)-tetrahydrocannabinol [THC]), smoked, vaporized, and oral cannabis (6...
March 29, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28402427/bdnf-overexpression-prevents-cognitive-deficit-elicited-by-adolescent-cannabis-exposure-and-host-susceptibility-interaction
#16
Hadar Segal-Gavish, Neta Gazit, Yael Barhum, Tali Ben-Zur, Michal Taler, Shay Henry Hornfeld, Irit Gil-Ad, Abraham Weizman, Inna Slutsky, Minae Niwa, Atsushi Kamiya, Akira Sawa, Daniel Offen, Ran Barzilay
Cannabis abuse in adolescence is associated with increased risk of psychotic disorders. Δ-9-tetrahydrocannabinol (THC) is the primary psychoactive component of cannabis. Disrupted-In-Schizophrenia-1 (DISC1) protein is a driver for major mental illness by influencing neurodevelopmental processes. Here, utilizing a unique mouse model based on host (DISC1) X environment (THC administration) interaction, we aimed at studying the pathobiological basis through which THC exposure elicits psychiatric manifestations...
April 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28399267/development-of-a-%C3%AE-9-tetrahydrocannabinol-amino-acid-dicarboxylate-prodrug-with-improved-ocular-bioavailability
#17
Goutham R Adelli, Prakash Bhagav, Pranjal Taskar, Tushar Hingorani, Sara Pettaway, Waseem Gul, Mahmoud A ElSohly, Michael A Repka, Soumyajit Majumdar
Purpose: The aim of the present study was to evaluate the utility of the relatively hydrophilic Δ9-tetrahydrocannabinol (THC) prodrugs, mono and di-valine esters (THC-Val and THC-Val-Val) and the amino acid (valine)-dicarboxylic acid (hemisuccinate) ester (THC-Val-HS), with respect to ocular penetration and intraocular pressure (IOP) lowering activity. THC, timolol, and pilocarpine eye drops were used as controls. Methods: THC-Val, THC-Val-Val, and THC-Val-HS were synthesized and chemically characterized...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28396142/atypical-binding-at-dopamine-and-serotonin-transporters-contribute-to-the-discriminative-stimulus-effects-of-mephedrone
#18
Alyssa F DeLarge, Laura L Erwin, Peter J Winsauer
Mephedrone (4-methylmethcathinone), a constituent of the recreational substances known as "bath salts", is a synthetic cathinone that can produce auditory and visual hallucinations, as well as problematic cardiovascular effects. This study compared the discriminative stimulus effects of mephedrone (0.32-10 mg/kg) with other prototypical drugs of abuse: cocaine (0.56-32 mg/kg), d-amphetamine (0.18-3.2 mg/kg), ketamine (1.8-18 mg/kg), phencyclidine (PCP, 1-5.6 mg/kg), heroin (1-10 mg/kg), 2,5-dimethoxy-4-iodoamphetamine (R-DOI, 0...
April 7, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28392338/cannabis-exercise-performance-and-sport-a-systematic-review
#19
REVIEW
Michael C Kennedy
OBJECTIVES: To review the evidence relating to the effect of cannabis on exercise performance. DESIGN: A systematic review of published literature METHODS: Tetrahydrocannabinol (THC) is the principal psychoactive component of cannabis. A search was conducted using PUB med, Medline and Embase searching for cannabis, marijuana, cannabinoids and THC, in sport and exercise; the contents of sports medicine journals for the last 10 years; as well as cross references from journals and a personal collection of reprints...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28379600/hepatotoxicity-associated-to-synthetic-cannabinoids-use
#20
R Solimini, F P Busardò, M C Rotolo, S Ricci, L Mastrobattista, C Mortali, S Graziano, M Pellegrini, N M di Luca, I Palmi
Synthetic cannabinoids (SCs) are psychotropic compounds, chemically created in laboratory to mimic cannabinergic brain activity of delta-9 tetrahydrocannabinol. The consumption of these compounds for recreational purposes can lead to a variety of adverse effects on health including overdose and deaths. Increasingly popular as substances of abuse since the 2000s, SCs were produced initially to bind and study cannabinoid receptors (they also can be called synthetic cannabimimetics) failing in eliminating the psychoactive effects...
March 2017: European Review for Medical and Pharmacological Sciences
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