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Tetrahydrocannabinol

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https://www.readbyqxmd.com/read/29240420/iodine-promoted-aromatization-of-p-menthane-type-phytocannabinoids
#1
Federica Pollastro, Diego Caprioglio, Patrizia Marotta, Aniello Schiano Moriello, Luciano De Petrocellis, Orazio Taglialatela-Scafati, Giovanni Appendino
Treatment with iodine cleanly converts various p-menthane-type phytocannabinoids and their carboxylated precursors into cannabinol (CBN, 1a). The reaction is superior to previously reported protocols in terms of simplicity and substrate range, which includes not only tricyclic tetrahydrocannabinols such as Δ9-THC (2a) but also bicyclic phytocannabinoids such as cannabidiol (CBD, 3a). Lower homologues from the viridin series (2c and 3c, respectively) afforded cannabivarin (CBV), a non-narcotic compound that, when investigated against a series of ionotropic (thermo-TRPs) biological end-points of phytocannabinoids, retained the submicromolar TRPA1-activating and TRPM8-inhibiting properties of CBN, while also potently activating TRPV2...
December 14, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29238967/potent-anti-inflammatory-and-pro-resolving-effects-of-anabasum-in-a-human-model-of-self-resolving-acute-inflammation
#2
Madhur P Motwani, Frances Bennett, Paul C Norris, Alexander A Maini, Marc J George, Justine Newson, Alice Henderson, Adrian J Hobbs, Mark Tepper, Barbara White, Charles N Serhan, Raymond MacAllister, Derek W Gilroy
Anabasum is a synthetic analogue of Δ8 - tetrahydrocannabinol (THC)-11-oic acid that in pre-clinical models of experimental inflammation exerts potent anti-inflammatory actions with minimal CNS cannabimimetic activity. Here we used a novel model of acute inflammation driven by i.d. UV-killed E. coli in healthy humans and found that Anabasum (5mg) exerted a potent anti-inflammatory effect equivalent to that of prednisolone in terms of inhibiting neutrophil infiltration, the hallmark of acute inflammation. These effects arose from the inhibition of the neutrophil chemoattractant LTB4 , while the inhibition of anti-phagocytic prostanoids (PGE2 , TxB2 and PGF2 α) resulted in enhanced clearance of inflammatory stimulus from the injected site...
December 14, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29237190/determination-of-acid-and-neutral-cannabinoids-in-extracts-of-different-strains-of-cannabis-sativa-using-gc-fid
#3
Elsayed A Ibrahim, Waseem Gul, Shahbaz W Gul, Brandon J Stamper, Ghada M Hadad, Randa A Abdel Salam, Amany K Ibrahim, Safwat A Ahmed, Suman Chandra, Hemant Lata, Mohamed M Radwan, Mahmoud A ElSohly
Cannabis (Cannabis sativa L.) is an annual herbaceous plant that belongs to the family Cannabaceae. Trans-Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD) are the two major phytocannabinoids accounting for over 40% of the cannabis plant extracts, depending on the variety. At the University of Mississippi, different strains of C. sativa, with different concentration ratios of CBD and Δ9-THC, have been tissue cultured via micropropagation and cultivated. A GC-FID method has been developed and validated for the qualitative and quantitative analysis of acid and neutral cannabinoids in C...
December 13, 2017: Planta Medica
https://www.readbyqxmd.com/read/29232588/bioactive-products-from-singlet-oxygen-photooxygenation-of-cannabinoids
#4
Ahmed Galal Osman, Khaled M Elokely, Vivek K Yadav, Paulo Carvalho, Mohamed Radwan, Desmond Slade, Waseem Gul, Shabana Khan, Olivia R Dale, Afeef S Husni, Michael L Klein, Stephen J Cutler, Samir A Ross, Mahmoud A ElSohly
Photooxygenation of Δ8 tetrahydrocannabinol (Δ8-THC), Δ9 tetrahydrocannabinol (Δ9-THC), Δ9 tetrahydrocannabinolic acid (Δ9-THCA) and some derivatives (acetate, tosylate and methyl ether) yielded 24 oxygenated derivatives, 18 of which were new and 6 were previously reported, including allyl alcohols, ethers, quinones, hydroperoxides, and epoxides. Testing these compounds for their modulatory effect on cannabinoid receptors CB1 and CB2 led to the identification of 7 and 21 as CB1 partial agonists with Ki values of 0...
November 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29232070/schedules-of-controlled-substances-placement-of-fda-approved-products-of-oral-solutions-containing-dronabinol-delta-9-trans-tetrahydrocannabinol-delta-9-thc-in-schedule-ii-final-rule
#5
(no author information available yet)
This final rule adopts without changes an interim final rule with request for comments published in the Federal Register on March 23, 2017. On July 1, 2016, the U.S. Food and Drug Administration (FDA) approved a new drug application for Syndros, a drug product consisting of dronabinol [(-)-delta-9-trans-tetrahydrocannabinol (delta-9-THC)] oral solution. The Drug Enforcement Administration (DEA) maintains FDA-approved products of oral solutions containing dronabinol in schedule II of the Controlled Substances Act...
November 22, 2017: Federal Register
https://www.readbyqxmd.com/read/29231136/stability-of-drugs-of-abuse-in-urine-samples-at-room-temperature-by-use-of-a-salt-mixture
#6
Manuela Pellegrini, Silvia Graziano, Luisa Mastrobattista, Adele Minutillo, Francesco Paolo Busardo, Gianfranco Scarsella
BACKGROUND: It has been long recognized that ensuring analyte stability is of crucial importance in the use of any quantitative bioanalytical method. As analyses are usually not performed directly after collection of the biological samples, but after these have been processed and stored, it is essential that analyte stability be maintained over the relevant storage conditions in order to ensure that the obtained concentration results adequately reflect those directly after sampling. The conservation of urine samples in refrigerated/frozen conditions is strongly recommended; but not always feasible...
December 11, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29230395/thc-treatment-alters-glutamate-receptor-gene-expression-in-human-stem-cell-derived-neurons
#7
Ifeanyi V Obiorah, Hamza Muhammad, Khalifa Stafford, Erin K Flaherty, Kristen J Brennand
Given the cognitive and behavioral effects following in utero Δ9-tetrahydrocannabinol (THC) exposure that have been reported in humans and rodents, it is critical to understand the precise consequences of THC on developing human neurons. Here, we utilize excitatory neurons derived from human-induced pluripotent stem cells (hiPSCs), and report that in vitro THC exposure reduced expression of glutamate receptor subunit genes (GRIA1, GRIA2, GRIN2A, and GRIN2B). By expanding these studies across hiPSC-derived neurons from individuals with a variety of genotypes, we believe that a hiPSC-based model will facilitate studies of the interaction of THC exposure and the genetic risk factors underlying neuropsychiatric disease vulnerability...
November 2017: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/29218644/cardiovascular-complications-of-marijuana-and-related-substances-a-review
#8
REVIEW
Amitoj Singh, Sajeev Saluja, Akshat Kumar, Sahil Agrawal, Munveer Thind, Sudip Nanda, Jamshid Shirani
The recreational use of cannabis has sharply increased in recent years in parallel with its legalization and decriminalization in several countries. Commonly, the traditional cannabis has been replaced by potent synthetic cannabinoids and cannabimimetics in various forms. Despite overwhelming public perception of the safety of these substances, an increasing number of serious cardiovascular adverse events have been reported in temporal relation to recreational cannabis use. These have included sudden cardiac death, vascular (coronary, cerebral and peripheral) events, arrhythmias and stress cardiomyopathy among others...
December 7, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/29203575/chronic-%C3%AE-9-thc-in-rhesus-monkeys-effects-on-cognitive-performance-and-dopamine-d2-d3-receptor-availability
#9
William S John, Thomas J Martin, Kiran K Solingapuram Sai, Susan H Nader, H D Gage, Akiva Mintz, Michael A Nader
Cannabis-related impairments to cognitive function may represent novel therapeutic targets for cannabis-use disorder, although the nature, persistence, and reversibility of those deficits remain unclear. Adult male rhesus monkeys (N=6) responded in the mornings on tasks designed to assess different cognitive domains using CANTAB touchscreens followed by responding maintained under a fixed-ratio (FR) 10 schedule of food presentation in different operant chambers. First, the acute effects of Δ9-tetrahydrocannabinol (THC; 0...
December 4, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29202510/extraction-method-and-analysis-of-cannabinoids-in-cannabis-olive-oil-preparations
#10
Antonella Casiraghi, Gabriella Roda, Eleonora Casagni, Cecilia Cristina, Umberto Maria Musazzi, Silvia Franzè, Paolo Rocco, Claudia Giuliani, Gelsomina Fico, Paola Minghetti, Veniero Gambaro
Recently, an increasing number of pharmacists had to supply medicinal products based on Cannabis sativa L. (Cannabaceae), prescribed by physicians to individual patients. Cannabis olive oil preparation is the first choice as a concentrated extract of cannabinoids, even though standardized operative conditions for obtaining it are still not available. In this work, the impact of temperature and extraction time on the concentration of active principles was studied to harmonize the different compounding methods, optimize the extraction process, and reduce the variability among preparations...
December 4, 2017: Planta Medica
https://www.readbyqxmd.com/read/29202305/development-of-a-simple-and-sensitive-liquid-chromatography-triple-quadrupole-mass-spectrometry-lc-ms-ms-method-for-the-determination-of-cannabidiol-cbd-%C3%AE-9-tetrahydrocannabinol-thc-and-its-metabolites-in-rat-whole-blood-after-oral-administration-of-a-single
#11
Federica Palazzoli, Cinzia Citti, Manuela Licata, Antonietta Vilella, Letizia Manca, Michele Zoli, Maria Angela Vandelli, Flavio Forni, Giuseppe Cannazza
The investigation of the possible conversion of cannabidiol (CBD) into Δ9-tetrahydrocannabinol (THC) in vivo after oral administration of CBD is reported herein since recent publications suggested a rapid conversion in simulated gastric fluid. To this end, single high dose of CBD (50mg/kg) was administered orally to rats and their blood was collected after 3 and 6h. A highly sensitive and selective LC-MS/MS method was developed and fully validated in compliance with the Scientific Working Group of Forensic Toxicology (SWGTOX) standard practices for method validation in forensic toxicology...
November 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29194121/hiv-infected-cannabis-users-have-lower-circulating-cd16-monocytes-and-ip-10-levels-compared-to-non-using-hiv-patients
#12
Michael D Rizzo, Robert B Crawford, Joseph E Henriquez, Yasser Aldhamen, Peter Gulick, Andrea Amalfitano, Norbert E Kaminski
OBJECTIVE: Chronic immune activation and elevated numbers of circulating activated monocytes (CD16) are implicated in HIV-associated neuroinflammation. The objective was to compare the level of circulating CD16 monocytes and interferon-γ-inducible protein 10 (IP-10) between HIV-infected cannabis users (HIV+MJ+) and non-cannabis users (HIV+MJ-), and determine whether in vitro Δ-Tetrahydrocannabinol (THC), a constituent of cannabis, affected CD16 expression as well as IP-10 production by monocytes...
November 30, 2017: AIDS
https://www.readbyqxmd.com/read/29192095/health-effects-of-exposure-to-second-and-third-hand-marijuana-smoke-a-systematic-review
#13
Hannah Holitzki, Laura E Dowsett, Eldon Spackman, Tom Noseworthy, Fiona Clement
BACKGROUND: Recreational marijuana has been legalized in 11 jurisdictions; Canada will legalize marijuana by July 2018. With this changing landscape, there is a need to understand the public health risks associated with marijuana to support patient-care provider conversations, harm-reduction measures and evidence-informed policy. The objective of this work was to summarize the health effects of exposure to second- and third-hand marijuana smoke. METHODS: In this systematic review, we searched 6 databases from inception to October 2017...
November 24, 2017: CMAJ Open
https://www.readbyqxmd.com/read/29191629/effects-of-thc-on-human-amniotic-epithelial-cell-proliferation-and-migration
#14
J L Yao, Q Z He, M Liu, X W Chang, J T Wu, T Duan, K Wang
BACKGROUND: The deleterious effects of cannabis consumption for fertility and pregnancy outcome are recognized for years. The main psychoactive molecule of cannabis, Δ(9)-tetrahydrocannabinol (THC) is able to cross the placenta barrier and cause alterations in fetal growth, low birth weight and preterm labor. However, the effects of THC on the human placenta amnion are still unknown. METHODS: The distributions of CB1R and CB2R in human amnion tissues were observed by immunohistochemistry (IHC)...
November 27, 2017: Toxicology
https://www.readbyqxmd.com/read/29189144/therapeutic-use-of-%C3%AE-9-thc-and-cannabidiol-evaluation-of-a-new-extraction-procedure-for-the-preparation-of-cannabis-based-olive-oil
#15
Luca Morini, Giorgio Porro, Maurizio Liso, Angelo Groppi
BACKGROUND: Since 2013 Cannabis-based preparations, containing the two main cannabinoids of interest, Δ9-tetrahydrocannabinol (THC), and cannabidiol (CBD), can be used for therapeutic purposes, such as palliative care, neurodegenerative disorder treatment and other therapies. The preparations may consist of a drug partition in sachets, capsules or through the extraction in certified olive oil. OBJECTIVE: the aims of the study were: a) to develop and validate a new liquid chromatographic-tandem mass spectrometric (LC-MS/MS) method for the identification and quantification of THC and CBD in olive oil; b) to evaluate the extraction efficiency and reproducibility of a new commercial extractor on the market...
November 29, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29189142/interpretation-of-cannabis-findings-in-the-hair-of-very-young-children-mission-impossible
#16
Pascal Kintz, Alice Ameline, Aude Eibel, Annie Geraut, Audrey Farrugia, Laurent Berthelon, Jean-Sebastien Raul
BACKGROUND: Hair has been suggested since the middle of the 90's to be a suitable matrix to document repetitive exposure to cannabis. Because it is possible to detect ∆9-tetrahydrocannabinol (THC), cannabinol (CBN) and cannabidiol (CBD) in cannabis smoke, the identification of the metabolite, 11-nor-∆9-tetrahydrocannabinol carboxylic acid (THC-COOH) has been considered to allow the discrimination of active use. OBJECTIVE: Whereas the detection of drugs in a child's hair unambiguously shows drug handling in the environment of the child, it is difficult to distinguish between systemic incorporation into hair after ingestion or inhalation and external deposition into hair from smoke, dust, or contaminated surfaces...
November 29, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29186023/highly-sensitive-fpw-based-microsystem-for-rapid-detection-of-tetrahydrocannabinol-in-human-urine
#17
Je-Wei Lan, Chia-Hsu Hsieh, I-Yu Huang, Yu-Cheng Lin, Tsung-Yi Tsai, Chua-Chin Wang
This paper presents a highly sensitive flexural plate-wave (FPW)-based microsystem for rapid detection of tetrahydrocannabinol (THC) in human urine. First, a circular-type interdigital transducer (IDT) was integrated with a circular-type silicon-grooved reflective grating structure (RGS) to reduce insertion loss. Then, with lower insertion loss (-38.758 dB), the FPW device was used to develop a novel THC biosensor, and the results reveal that this FPW-THC biosensor has low detection limit (1.5625 ng/mL) and high mass-sensitivity (126...
November 29, 2017: Sensors
https://www.readbyqxmd.com/read/29182999/analysis-of-cannabinoids-in-commercial-hemp-seed-oil-and-decarboxylation-kinetics-studies-of-cannabidiolic-acid-cbda
#18
Cinzia Citti, Barbara Pacchetti, Maria Angela Vandelli, Flavio Forni, Giuseppe Cannazza
Hemp seed oil from Cannabis sativa L. is a very rich natural source of important nutrients, not only polyunsaturated fatty acids and proteins, but also terpenes and cannabinoids, which contribute to the overall beneficial effects of the oil. Hence, it is important to have an analytical method for the determination of these components in commercial samples. At the same time, it is also important to assess the safety of the product in terms of amount of any psychoactive cannabinoid present therein. This work presents the development and validation of a highly sensitive, selective and rapid HPLC-UV method for the qualitative and quantitative determination of the main cannabinoids, namely cannabidiolic acid (CBDA), tetrahydrocannabinolic acid (THCA), cannabidiol (CBD), tetrahydrocannabinol (THC), cannabinol (CBN), cannabigerol (CBG) and cannabidivarin (CBDV), present in 13 commercial hemp seed oils...
November 20, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29181404/%C3%AE-9-tetrahydrocannabinol-prevents-cardiovascular-dysfunction-in-stz-diabetic-wistar-kyoto-rats
#19
Rebecca K Vella, Douglas J Jackson, Andrew S Fenning
The aim of this study was to determine if chronic, low-dose administration of a nonspecific cannabinoid receptor agonist could provide cardioprotective effects in a model of type I diabetes mellitus. Diabetes was induced in eight-week-old male Wistar-Kyoto rats via a single intravenous dose of streptozotocin (65 mg kg-1). Following the induction of diabetes, Δ9-tetrahydrocannabinol was administered via intraperitoneal injection (0.15 mg kg-1 day-1) for an eight-week period until the animals reached sixteen weeks of age...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29178487/therapeutic-benefit-of-smoked-cannabis-in-randomized-placebo-controlled-studies
#20
Lynneice L Bowen, Aimee L McRae-Clark
The medicinal use of marijuana has been legalized in 28 states, with a wide range of specificity for approved medical conditions. Even with the emergence of non-combustion-based delivery systems, in 2014, 90% of marijuana users used smoked marijuana. The purpose of this review is to summarize the data available on use of smoked marijuana for medical purposes. A literature search was performed to retrieve randomized controlled trials exploring the efficacy of smoked cannabis for treatment of a medical condition...
November 27, 2017: Pharmacotherapy
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