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https://www.readbyqxmd.com/read/28333097/effects-of-a-sativex-like-combination-of-phytocannabinoids-on-disease-progression-in-r6-2-mice-an-experimental-model-of-huntington-s-disease
#1
Sara Valdeolivas, Onintza Sagredo, Mercedes Delgado, Miguel A Pozo, Javier Fernández-Ruiz
Several cannabinoids afforded neuroprotection in experimental models of Huntington's disease (HD). We investigated whether a 1:1 combination of botanical extracts enriched in either ∆⁸-tetrahydrocannabinol (∆⁸-THC) or cannabidiol (CBD), which are the main constituents of the cannabis-based medicine Sativex(®), is beneficial in R6/2 mice (a transgenic model of HD), as it was previously shown to have positive effects in neurotoxin-based models of HD. We recorded the progression of neurological deficits and the extent of striatal deterioration, using behavioral, in vivo imaging, and biochemical methods in R6/2 mice and their corresponding wild-type mice...
March 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28328019/dopant-assisted-direct-analysis-in-real-time-mass-spectrometry-with-argon-gas
#2
Robert B Cody, A John Dane
RATIONALE: Dopants used with Atmospheric Pressure Photoionization (APPI) were examined with the Direct Analysis in Real Time (DART(®) ) ion source operated with argon gas. Charge-exchange and proton transfer reactions were observed by adding toluene, anisole, chlorobenzene and acetone to the DART gas stream, complementing the information obtained by helium DART. METHODS: Mass spectra were acquired with a time-of-flight mass spectrometer equipped with a DART ion source operated with argon gas...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28327548/opioid-sparing-effect-of-cannabinoids-a-systematic-review-and-meta-analysis
#3
REVIEW
Suzanne Nielsen, Pamela Sabioni, Jose M Trigo, Mark A Ware, Brigid D Betz-Stablein, Bridin Murnion, Nicholas Lintzeris, Kok Eng Khor, Michael Farrell, Andrew Smith, Bernard Le Foll
Cannabinoids, when co-administered with opioids, may enable reduced opioid doses without loss of analgesic efficacy (ie an opioid-sparing effect). The aim of this study was to conduct a systematic review to determine the opioid-sparing potential of cannabinoids. Eligible studies included pre-clinical and clinical studies for which the outcome was either analgesia or opioid dose requirements. Clinical studies included controlled studies and case series. We searched Scopus, Cochrane Database of Systematic Reviews, Medline, and Embase...
March 22, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28324168/the-effect-of-eccentric-exercise-with-blood-flow-restriction-on-neuromuscular-activation-microvascular-oxygenation-and-the-repeated-bout-effect
#4
Jakob D Lauver, Trent E Cayot, Timothy Rotarius, Barry W Scheuermann
PURPOSE: To examine the effect of low-intensity eccentric contractions with and without blood flow restriction (BFR) on microvascular oxygenation, neuromuscular activation, and the repeated bout effect (RBE). METHODS: Participants were randomly assigned to either low-intensity (LI), low-intensity with BFR (LI-BFR), or a control (CON) group. Participants in LI and LI-BFR performed a preconditioning bout of low-intensity eccentric exercise prior to about of maximal eccentric exercise...
March 21, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28323498/predictors-of-adult-e-cigarette-users-vaporizing-cannabis-using-e-cigarettes-and-vape-pens
#5
Meghan E Morean, Noah Lipshie, Margo Josephson, Dawn Foster
BACKGROUND: Given limited extant research, we assessed the use of portable, battery-powered cannabis vaporizers by adult e-cigarette users. METHODS: 522 adult vapers completed an online survey. Demographics; lifetime and past-month cannabis vaporization via e-cigarettes/vape-pens; preferences for hash oil, D-9-tetrahydrocannabinol (THC) wax, or dried buds; and cannabis vaporization beliefs and motives were examined. Demographics, age of e-cigarette onset, e-cigarette use frequency, state-level legal status of cannabis, cannabis vaping beliefs/motives, and impulsivity were examined as predictors of lifetime cannabis vaporization, past-month cannabis vaporization, and cannabis vaping frequency...
March 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28317711/analysis-of-cannabinoids-by-liquid-chromatography-mass-spectrometry-in-milk-liver-and-hemp-seed-to-ensure-food-safety
#6
Úrsula Escrivá, María Jesús Andrés-Costa, Vicente Andreu, Yolanda Picó
A method for determining cannabinoids, Δ9-tetrahidrocannabinol (THC), 11-nor-9-carboxy-Δ(9)-THC (THC-COOH) and 11-hidroxy-Δ(9)-THC (THC-OH) in milk, liver and hemp seeds based on liquid chromatography tandem mass spectrometry has been optimized and validated. Analytes were extracted with methanol and the extracts cleaned-up by solid-phase extraction using Oasis HLB (60mg). The developed method was validated according to the Commission Decision 2002/657/EC. The decision limit (CCα) and detection capability (CCβ) ranged from 3...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28293911/delta-9-tetrahydrocannabinol-cannabidiol-oromucosal-spray-sativex-%C3%A2-a-review-in-multiple-sclerosis-related-spasticity
#7
Gillian M Keating
Delta-9-tetrahydrocannabinol (THC)/cannabidiol (CBD) oromucosal spray (THC/CBD, Sativex(®), nabiximols) is available in numerous countries worldwide for the treatment of multiple sclerosis (MS)-related moderate to severe spasticity in patients who have not responded adequately to other anti-spasticity medication and who demonstrate clinically significant improvement in spasticity-related symptoms during an initial trial of therapy. Twelve weeks' therapy with THC/CBD improved MS-related spasticity in patients with an inadequate response to other anti-spasticity agents who had undergone a successful initial trial of THC/CBD therapy, according to the results of a pivotal phase 3 trial...
March 14, 2017: Drugs
https://www.readbyqxmd.com/read/28288911/effects-of-traditional-medical-herbs-minor-bupleurum-decoction-on-the-non-specific-immune-responses-of-white-shrimp-litopenaeus-vannamei
#8
Yu-Sheng Wu, Meng-Chou Lee, Cheng-Ting Huang, Tzu-Chi Kung, Chih-Yang Huang, Fan-Hua Nan
This study is investigating the effect of minor bupleurum decoction (Xiao-Chai-Hu decoction) on the non-specific immune response of white shrimp (Litopenaeus vannamei). To determine prophenoloxidase activity (proPO), reactive oxygen species production (ROS), superoxide anion production (O2(-)), nitric oxide production (NO), phagocytic rate (PR), phagocytic index (PI), superoxide dismutase activity (SOD), total haemocyte count (THC) and differential haemocyte count (DHC). In this experiment, treating with different dosages (0, 0...
March 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28276820/cannabinoids-for-treating-inflammatory-bowel-diseases-where-are-we-and-where-do-we-go
#9
Carina Hasenoehrl, Martin Storr, Rudolf Schicho
Fifty years after the discovery of Δ(9)-tetrahydrocannabinol (THC) as the psychoactive component of Cannabis, we are assessing the possibility of translating this herb into clinical treatment of inflammatory bowel diseases (IBDs). Here, a discussion on the problems associated with a potential treatment is given. From first surveys and small clinical studies in patients with IBD we have learned that Cannabis is frequently used to alleviate diarrhea, abdominal pain, and loss of appetite. Single ingredients from Cannabis, such as THC and cannabidiol, commonly described as cannabinoids, are responsible for these effects...
April 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28276775/cannabinoids-therapeutic-use-what-is-our-current-understanding-following-the-introduction-of-thc-thc-cbd-oromucosal-spray-and-others
#10
Mauro Maccarrone, Rafael Maldonado, Miguel Casas, Thomas Henze, Diego Centonze
The complexity of the endocannabinoid (eCB) system is becoming better understood and new drivers of eCB signaling are emerging. Modulation of the activities of the eCB system can be therapeutic in a number of diseases. Research into the eCB system has been paralleled by the development of agents that interact with cannabinoid receptors. In this regard it should be remembered that herbal cannabis contains a myriad of active ingredients, and the individual cannabinoids have quite distinct biological activities requiring independent studies...
April 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28273889/structural-phase-transition-of-thc-under-high-pressure
#11
Cun Yu, Jun Lin, Ping Huai, Yongliang Guo, Xuezhi Ke, Xiaohe Yu, Ke Yang, Nana Li, Wenge Yang, Baoxing Sun, Ruobing Xie, Hongjie Xu
Thorium monocarbide (ThC) as a potential fuel for next generation nuclear reactor has been subjected to its structural stability investigation under high pressure, and so far no one reported the observation of structure phase transition induced by pressure. Here, utilizing the synchrotron X-ray diffraction technique, we for the first time, experimentally revealed the phase transition of ThC from B1 to P4/nmm at pressure of ~58 GPa at ambient temperature. A volume collapse of 10.2% was estimated during the phase transition...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28273545/prevalence-of-drugs-in-oral-fluid-from-truck-drivers-in-brazilian-highways
#12
Henrique Silva Bombana, Hallvard Gjerde, Marcelo Filonzi Dos Santos, Ragnhild Elén Gjulem Jamt, Mauricio Yonamine, Waldo José Caram Rohlfs, Daniel Romero Muñoz, Vilma Leyton
Traffic accidents are responsible for 1.25 million deaths worldwide and are the most common cause of death among those aged 15-29 years. In Brazil, traffic accidents caused more than 44,000 deaths in 2014. The use of psychoactive drugs is an important risk factor for being involved in traffic accidents. Previous studies have found that psychoactive substances are commonly used by truck drivers in Brazil to maintain their extensive work schedule and stay awake while driving during nighttime hours. The state of Sao Paulo is one of the most important states regarding goods transportation...
March 1, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28272498/the-differential-binding-of-antipsychotic-drugs-to-the-abc-transporter-p-glycoprotein-predicts-cannabinoid-antipsychotic-drug-interactions
#13
Natalia I Brzozowska, Erik J de Tonnerre, Kong M Li, Xiao Suo Wang, Aurelie A Boucher, Paul D Callaghan, Michael Kuligowski, Alex Wong, Jonathon C Arnold
Cannabis use increases rates of psychotic relapse and treatment failure in schizophrenia patients. Clinical studies suggest that cannabis use reduces the efficacy of antipsychotic drugs, however there has been no direct demonstration of this in a controlled study. The present study demonstrates that exposure to the principal phytocannabinoid, Δ(9)-tetrahydrocannabinol (THC), reverses the neurobehavioural effects of the antipsychotic drug risperidone in mice. THC exposure did not influence D2 and 5-HT2A receptor binding, the major targets of antipsychotic action, however lowered the brain concentrations of risperidone and its active metabolite, 9-hydroxy risperidone...
March 8, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28259650/can-we-make-cannabis-safer
#14
REVIEW
Amir Englund, Tom P Freeman, Robin M Murray, Philip McGuire
Cannabis use and related problems are on the rise globally alongside an increase in the potency of cannabis sold on both black and legal markets. Additionally, there has been a shift towards abandoning prohibition for a less punitive and more permissive legal stance on cannabis, such as decriminalisation and legalisation. It is therefore crucial that we explore new and innovative ways to reduce harm. Research has found cannabis with high concentrations of its main active ingredient, δ-9-tetrahydrocannabinol (THC), to be more harmful (in terms of causing the main risks associated with cannabis use, such as addiction, psychosis, and cognitive impairment) than cannabis with lower concentrations of THC...
March 1, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28254499/benzo-a-pyrene-exposure-under-future-ocean-acidification-scenarios-weakens-the-immune-responses-of-blood-clam-tegillarca-granosa
#15
Wenhao Su, Shanjie Zha, Yichen Wang, Wei Shi, Guoqiang Xiao, Xueliang Chai, Hongxi Wu, Guangxu Liu
Persistent organic pollutants (POPs) are known to converge into the ocean and accumulate in the sediment, posing great threats to marine organisms such as the sessile bottom burrowing bivalves. However, the immune toxicity of POPs, such as B[a]P, under future ocean acidification scenarios remains poorly understood to date. Therefore, in the present study, the impacts of B[a]P exposure on the immune responses of a bivalve species, Tegillarca granosa, under present and future ocean acidification scenarios were investigated...
February 28, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28254350/the-current-status-of-artisanal-cannabis-for-the-treatment-of-epilepsy-in-the-united-states
#16
Dustin Sulak, Russell Saneto, Bonni Goldstein
The widespread patient use of artisanal cannabis preparations has preceded quality validation of cannabis use for epilepsy. Neurologists and cannabinoid specialists are increasingly in a position to monitor and guide the use of herbal cannabis in epilepsy patients. We report the retrospective data on efficacy and adverse effects of artisanal cannabis in Patients with medically refractory epilepsy with mixed etiologies in Washington State, California, and Maine. Clinical considerations, including potential risks and benefits, challenges related to artisanal preparations, and cannabinoid dosing, are discussed...
February 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28245177/%C3%AE-9-tetrahydrocannabinol-decreases-willingness-to-exert-cognitive-effort-in-male-rats
#17
Mason M Silveira, Wendy K Adams, Maria Morena, Matthew N Hill, Catharine A Winstanley
BACKGROUND: Acceptance of cannabis use is growing. However, prolonged use is associated with diminished psychosocial outcomes, potentially mediated by drug-induced cognitive impairments. Δ(9)-Tetrahydrocannabinol (THC) is the main psychoactive ingredient in cannabis, yet other phytocannabinoids in the plant, such as cannabidiol (CBD), have unique properties. Given that CBD can modulate the undesirable effects of THC, therapeutic agents, such as nabiximols, contain higher CBD:THC ratios than illicit marijuana...
March 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28240418/analysis-of-drugs-of-abuse-in-cerumen-correlation-of-postmortem-analysis-results-with-those-for-blood-urine-and-hair
#18
Sylvia I Meier, Sarah C Koelzer, Manfred Schubert-Zsilavecz, Stefan W Toennes
The evaluation of drug and alcohol abuse is a major subject of forensic toxicology. Assessment of drug abstinence currently requires the analysis of urine or hair. In the present study cerumen, a mixture of sebum and sweat, was tested as an alternative. Postmortem samples (blood, urine, hair and cerumen from 38 corpses) were analyzed using liquid chromatography and gas chromatography, each coupled to mass spectrometry (LC-MS, GC-MS). The results were compared. In all cases of recent drug use (i.e. detection of opiates, amphetamine and derivatives, cocaine, methadone and diazepam or their metabolites in blood) the corresponding cerumen was positive...
February 27, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28240291/residual-effects-of-thc-via-novel-measures-of-brain-perfusion-and-metabolism-in-a-large-group-of-chronic-cannabis-users
#19
Francesca M Filbey, Sina Aslan, Hanzhang Lu, Shin-Lei Peng
Given the known vascular effects of cannabis, this study examined the neurophysiological factors that may impact studies of brain activity in cannabis users. We conducted a systematic evaluation in 72-hour abstinent, chronic cannabis users (N=74) and non-using controls (N=101) to determine the association between prolonged cannabis use and the following neurophysiological indicators: (1) global and regional resting cerebral blood flow (CBF), (2) oxygen extraction fraction (OEF), and (3) cerebral metabolic rate of oxygen (CMRO2)...
February 27, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28240187/the-endocannabinoid-system-modulating-levels-of-consciousness-emotions-and-likely-dream-contents
#20
Eric Murillo-Rodriguez, José Carlos Pastrana-Trejo, Mireille Salas-Crisóstomo, Miriel de-la-Cruz
Cannabinoids are derivatives that are either compounds occurring naturally in the plant, Cannabis sativa or synthetic analogs of these molecules. The first and most widely investigated of the cannabinoids is ∆9-tetrahydrocannabinol (Δ9-THC), which is the main psychotropic constituent of cannabis and undergoes significant binding to cannabinoid receptors. These cannabinoid receptors are seven-transmembrane receptors that received their name from the fact that they respond to cannabinoid compounds, including Δ9-THC...
February 23, 2017: CNS & Neurological Disorders Drug Targets
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