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Cannabis and cannabinoids

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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/28319753/the-impact-of-cannabis-and-cannabinoids-for-medical-conditions-on-health-related-quality-of-life-a-systematic-review-and-meta-analysis
#2
REVIEW
Matthew Goldenberg, Mark William Reid, Waguih William IsHak, Itai Danovitch
INTRODUCTION: The use of cannabis or cannabinoids to treat medical conditions and/or alleviate symptoms is increasingly common. However, the impact of this use on patient reported outcomes, such as health-related quality of life (HRQoL), remains unclear. METHODS: We conducted a systematic review and meta-analysis, employing guidelines from Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We categorized studies based on design, targeted disease condition, and type of cannabis or cannabinoid used...
March 1, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28314070/long-lasting-effects-of-chronic-heavy-cannabis-abuse
#3
Joannis N Nestoros, Elena Vakonaki, Manolis N Tzatzarakis, Athanasios Alegakis, Markos D Skondras, Aristidis M Tsatsakis
BACKGROUND AND OBJECTIVES: The purpose of this study was to evaluate the extent of short-term memory impairment and schizophrenia-like symptoms in heavy and systematic cannabis users and the association between the severity of abuse and the longevity of its persistent symptoms after refraining from such use. METHODS: A complete psychiatric examination and a psychometric evaluation were performed in 48 solely cannabis users. Additionally, head hair samples were analyzed and the detected cannabinoids levels were correlated with the psychometric findings...
March 17, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28286929/cannabis-use-and-bone-mineral-density-nhanes-2007-2010
#4
Donald Bourne, Wesley Plinke, Elizabeth R Hooker, Carrie M Nielson
Cannabis use is rising in the USA. Its relationship to cannabinoid signaling in bone cells implies its use could affect bone mineral density (BMD) in the population. In a national survey of people ages 20-59, we found no association between self-reported cannabis use and BMD of the hip or spine. INTRODUCTION: Cannabis is the most widely used illegal drug in the USA, and its recreational use has recently been approved in several US states. Cannabinoids play a role in bone homeostasis. We aimed to determine the association between cannabis use and BMD in US adults...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28283378/the-effects-of-synthetic-cannabinoid-ur-144-on-the-human-body-a-review-of-39-cases
#5
Piotr Adamowicz, Joanna Gieroń, Dominika Gil, Wojciech Lechowicz, Agnieszka Skulska, Bogdan Tokarczyk
UR-144 [(1-pentyl-1H-indol-3-yl)(2,2,3,3-tetramethylcyclopropyl)methanone] is a synthetic cannabinoid, which has been detected in many 'legal highs', seized from the global drug market since the beginning of 2012. It has gained popularity as a 'legal' alternative to classic cannabis in countries where it was not controlled. Despite the widespread distribution of this substance, the data on its effects on the human body are scarce. Therefore, this paper describes the results of analysis and observed effects in 39 cases in which UR-144 was determined in blood...
March 7, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28281107/cannabis-for-pain-and-headaches-primer
#6
REVIEW
Philip S Kim, Michael A Fishman
PURPOSE OF REVIEW: Marijuana has been used both medicinally and recreationally since ancient times and interest in its compounds for pain relief has increased in recent years. The identification of our own intrinsic, endocannabinoid system has laid the foundation for further research. RECENT FINDINGS: Synthetic cannabinoids are being developed and synthesized from the marijuana plant such as dronabinol and nabilone. The US Food and Drug Administration approved the use of dronabinol and nabilone for chemotherapy-associated nausea and vomiting and HIV (Human Immunodeficiency Virus) wasting...
April 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28276820/cannabinoids-for-treating-inflammatory-bowel-diseases-where-are-we-and-where-do-we-go
#7
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
#8
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/28274851/emerging-therapeutic-targets-in-cancer-induced-bone-disease-a-focus-on-the-peripheral-type-2-cannabinoid-receptor
#9
REVIEW
Silvia Marino, Aymen I Idris
Skeletal complications are a common cause of morbidity in patients with primary bone cancer and bone metastases. The type 2 cannabinoid (Cnr2) receptor is implicated in cancer, bone metabolism and pain perception. Emerging data have uncovered the role of Cnr2 in the regulation of tumour-bone cell interactions and suggest that agents that target Cnr2 in the skeleton have potential efficacy in the reduction of skeletal complications associated with cancer. This review aims to provide an overview of findings relating to the role of Cnr2 receptor in the regulation of skeletal tumour growth, osteolysis and bone pain, and highlights the many unanswered questions and unmet needs...
March 6, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28272498/the-differential-binding-of-antipsychotic-drugs-to-the-abc-transporter-p-glycoprotein-predicts-cannabinoid-antipsychotic-drug-interactions
#10
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/28268256/cannabidiol-regulation-of-emotion-and-emotional-memory-processing-relevance-for-treating-anxiety-related-and-substance-abuse-disorders
#11
REVIEW
Jonathan L C Lee, Leandro J Bertoglio, Francisco S Guimarães, Carl W Stevenson
Learning to associate cues or contexts with potential threats or rewards is adaptive and enhances survival. Both aversive and appetitive memories are therefore powerful drivers of behaviour, but the inappropriate expression of conditioned responding to fear- and drug-related stimuli can develop into anxiety-related and substance abuse disorders respectively. These disorders are associated with abnormally persistent emotional memories and inadequate treatment, often leading to symptom relapse. Studies show that cannabidiol, the main non-psychotomimetic phytocannabinoid found in Cannabis sativa, reduces anxiety via 5-HT1A and (indirect) cannabinoid receptor activation in paradigms assessing innate responses to threat...
March 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28263083/cannabinoid-signaling-in-health-and-disease
#12
Yan Lu, Hope D Anderson
Cannabis sativa has long been used for medicinal purposes. To improve safety and efficacy, compounds from C. sativa were purified or synthesized and named under an umbrella group as cannabinoids. Currently, several cannabinoids may be prescribed in Canada for a variety of indications such as nausea and pain. More recently, an increasing number of reports suggest other salutary effects associated with endogenous cannabinoid signaling including cardioprotection. The therapeutic potential of cannabinoids is therefore extended; however, evidence is limited and mechanisms remain unclear...
March 6, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28254350/the-current-status-of-artisanal-cannabis-for-the-treatment-of-epilepsy-in-the-united-states
#13
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/28249817/the-direct-actions-of-cannabidiol-and-2-arachidonoyl-glycerol-at-gabaa-receptors
#14
T Bakas, P S van Nieuwenhuijzen, S O Devenish, I S McGregor, J C Arnold, M Chebib
Cannabidiol (CBD) is a major non-intoxicating component of cannabis and possesses anti-epileptic, anxiolytic and anti-hyperalgesic properties. The mechanism of action of CBD in producing such effects remains unclear. Despite evidence that some endogenous and synthetic cannabinoids interact with GABAA receptors, no-one has yet investigated the effects of CBD. Here we used two-electrode voltage clamp electrophysiology to compare the actions of CBD with those of the major central endocannabinoid, 2-arachidonoyl glycerol (2-AG) on human recombinant GABAA receptors (synaptic α1-6βγ2 and extrasynaptic α4β2δ) expressed on Xenopus oocytes...
February 27, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28245177/%C3%AE-9-tetrahydrocannabinol-decreases-willingness-to-exert-cognitive-effort-in-male-rats
#15
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
#16
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/28240187/the-endocannabinoid-system-modulating-levels-of-consciousness-emotions-and-likely-dream-contents
#17
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
https://www.readbyqxmd.com/read/28238865/an-australian-nationwide-survey-on-medicinal-cannabis-use-for-epilepsy-history-of-antiepileptic-drug-treatment-predicts-medicinal-cannabis-use
#18
Anastasia S Suraev, Lisa Todd, Michael T Bowen, David J Allsop, Iain S McGregor, Carol Ireland, Nicholas Lintzeris
Epilepsy Action Australia conducted an Australian nationwide online survey seeking opinions on and experiences with the use of cannabis-based products for the treatment of epilepsy. The survey was promoted via the Epilepsy Action Australia's main website, on their Facebook page, and by word of mouth. The survey consisted of 39 questions assessing demographics, clinical factors, including diagnosis and seizure types, and experiences with and opinions towards cannabis use in epilepsy. A total of 976 responses met the inclusion criteria...
February 24, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28237885/assessment-of-tobacco-alcohol-and-cannabinoid-metabolites-in-645-meconium-samples-of-newborns-compared-to-maternal-self-reports
#19
Sandrine Lamy, Benjamin Hennart, Estelle Houivet, Sylvain Dulaurent, Heloise Delavenne, Jacques Benichou, Delphine Allorge, Stéphane Marret, Florence Thibaut
Prenatal psychoactive substance exposure has significant impact on neonatal health and child development and the development of reliable biomarkers is critical. Meconium presents several advantages for detecting prenatal exposure to psychoactive substances, as it is easy to collect and provides a broad time frame of exposure (third trimester). The aim of our study was to compare the prevalence of alcohol, tobacco and/or cannabis use during the third trimester of pregnancy (using maternal self-reports) with the results of meconium testing of their metabolites in newborns (cotinine, ethyl-glucuronide (EtG) and cannabinoid metabolites)...
February 13, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28237318/strokes-are-possible-complications-of-cannabinoids-use
#20
REVIEW
Valérie Wolff, Emilie Jouanjus
It is critically important to identify all factors that may play a role in the recent increase of the incidence of stroke among the young population. Considering the worldwide use of cannabinoids (cannabis and synthetic cannabinoids), the recent legalization of their consumption in some countries, and their supposed involvement in cardiovascular events, we evaluated their role in the occurrence of neurovascular complications among the young. Ninety-eight patients were described in the literature as having a cannabinoids-related stroke (85 after cannabis use and 13 after synthetic cannabinoids)...
February 23, 2017: Epilepsy & Behavior: E&B
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