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Tetrahydrocannabinol

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https://www.readbyqxmd.com/read/27916089/-estrogen-exerts-anti-inflammatory-effects-by-inhibiting-nf-%C3%AE%C2%BAb-pathway-through-binding-with-estrogen-receptor-%C3%AE-on-synovicytes-of-osteoarthritis
#1
Enwei Zhang, Hongtao Zhang, Fengzhou Liu, Chuan Dong, Yun Yao, Zhe Yun, Weiming Jian, Bao'an Ma
Objective To investigate the mechanism of estrogen's anti-inflammatory effects on synovial cells during the pathogenic process of osteoarthritis. Methods We isolated synovicytes from synovium tissues and identified the cells with flow cytometry. Then we detected the expression level of estrogen receptor β (ERβ) in synovicytes with immunofluorescence staining. The synovicytes were divided into control group, group pretreated with 10 ng/mL IL-1β, group pretreated with 10 ng/mL IL-1β and 10(-7) mol/L estrogen, group pretreated with 10 ng/mL IL-1β, 10(-7) mol/L estrogen and specific antagonist of ERβ, 10(-5) mol/L tetrahydrocannabinol (THC)...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27905004/ocular-disposition-of-%C3%A2-8-tetrahydrocannabinol-from-various-topical-ophthalmic-formulations
#2
Nagendra S Punyamurthula, Goutham R Adelli, Waseem Gul, Michael A Repka, Mahmoud A ElSohly, Soumyajit Majumdar
The purposes of this project are to enhance the trans-membrane penetration of Δ(8)-Tetrahydrocannabinol (Δ(8)-THC) and to study the effect of various lipid based systems in delivering the compound, non-invasively, to anterior and posterior ocular chambers. Solid lipid nanoparticles (SLNs), fast gelling films were manufactured using high pressure homogenization and melt cast techniques, respectively. The formulations were characterized for drug content, entrapment efficiency, particle size and subsequently evaluated in vitro for trans-corneal permeation...
November 30, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27899456/free-and-glucuronide-whole-blood-cannabinoids-pharmacokinetics-after-controlled-smoked-vaporized-and-oral-cannabis-administration-in-frequent-and-occasional-cannabis-users-identification-of-recent-cannabis-intake
#3
Matthew N Newmeyer, Madeleine J Swortwood, Allan J Barnes, Osama A Abulseoud, Karl B Scheidweiler, Marilyn A Huestis
BACKGROUND: There is increasing interest in markers of recent cannabis use because following frequent cannabis intake, Δ(9)-tetrahydrocannabinol (THC) may be detected in blood for up to 30 days. The minor cannabinoids cannabidiol, cannabinol (CBN), and THC-glucuronide were previously detected for ≤2.1 h in frequent and occasional smokers' blood after cannabis smoking. Cannabigerol (CBG), Δ(9)-tetrahydrocannabivarin (THCV), and 11-nor-9-carboxy-THCV might also be recent use markers, but their blood pharmacokinetics have not been investigated...
December 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27890824/evaluating-a-switch-from-meconium-to-umbilical-cord-tissue-for-newborn-drug-testing-a-retrospective-study-at-an-academic-medical-center
#4
Kendra L Palmer, Kelly E Wood, Matthew D Krasowski
BACKGROUND: The objective of this study was to compare detection rates of newborn drug exposure at an academic medical center transitioning from meconium to umbilical cord tissue toxicology testing. METHODS: We performed an Institutional Review Board-approved retrospective chart review on all newborns (n=2072) for whom newborn drug testing was ordered at our academic medical center between June 2012 and August 2015 (in August 2013, umbilical cord tissue became the preferred specimen)...
November 24, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27890370/acetylcholinesterase-butyrylcholinesterase-and-paraoxonase-1-activities-in-rats-treated-with-cannabis-tramadol-or-both
#5
Omar M E Abdel-Salam, Eman R Youness, Yasser A Khadrawy, Amany A Sleem
OBJECTIVE: To investigate the effect of Cannabis sativa resin and/or tramadol, two commonly drugs of abuse on acetylcholinesterase and butyrylcholinesterase activities as a possible cholinergic biomarkers of neurotoxicity induced by these agents. METHODS: Rats were treated with cannabis resin (5, 10 or 20 mg/kg) (equivalent to the active constituent Δ(9)-tetrahydrocannabinol), tramadol (5, 10 and 20 mg/kg) or tramadol (10 mg/kg) combined with cannabis resin (5, 10 and 20 mg/kg) subcutaneously daily for 6 weeks...
November 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27889374/-consumption-of-cannabis-in-adolescents
#6
O Phan, I Obradovic, A Har
Over the past 10 years, the consumption of cannabis among adolescents has dramatically increased. Today, adolescent cannabis use is a major public health problem. Two forms of cannabis are commonly smoked: herb (marijuana) and resin. These forms have a high concentration of tetrahydrocannabinol, the active molecule of cannabis. Recent research has helped understand how the cannabinoid system works. This system combines specific receptors and specific molecules: the endocannabinoids. The effects of cannabis use are now well documented...
November 23, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/27885307/epidemiology-of-testicular-cancer-in-oklahoma-and-the-united-states
#7
Shannon Smith, Amanda Janitz, Janis Campbell
Testicular cancer is a rare cause of morbidity and mortality in the US. Marked disparities in the development of this cancer exist, with testicular cancer being more common in Caucasian men and men of higher socioeconomic status. The incidence of testicular cancer is increasing worldwide, and the reasons for this have not been well documented. It has been proposed that this increase may be due to highly prevalent environmental factors, or from exposure to polychlorinated biphenyls, polyvinyl chloride, cigarette smoking, and tetrahydrocannabinol (THC)...
July 2016: Journal of the Oklahoma State Medical Association
https://www.readbyqxmd.com/read/27884725/endocannabinoid-system-in-sexual-motivational-processes-is-it-a-novel-therapeutic-horizon
#8
REVIEW
Renata Androvicova, Jiri Horacek, Tibor Stark, Filippo Drago, Vincenzo Micale
The endocannabinoid system (ECS), which is composed of the cannabinoid receptors types 1 and 2 (CB1 and CB2) for marijuana's psychoactive ingredient Δ(9)-tetrahydrocannabinol (Δ(9)-THC), the endogenous ligands (AEA and 2-AG) and the enzymatic systems involved in their biosynthesis and degradation, recently emerged as important modulator of emotional and non-emotional behaviors. For centuries, in addition to its recreational actions, several contradictory claims regarding the effects of Cannabis use in sexual functioning and behavior (e...
November 21, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27883985/a-systematic-review-of-passive-exposure-to-cannabis
#9
REVIEW
Aurélie Berthet, Mariangela De Cesare, Bernard Favrat, Frank Sporkert, Marc Augsburger, Aurélien Thomas, Christian Giroud
Passive exposure to cannabis smoke may induce effects on behavior and psychomotor skills, and have legal consequences, including the risk of being falsely considered as a cannabis user. This can become a concern, especially in occupational contexts or when driving vehicles. In order to enable a differentiation between a passive and an active exposure to cannabis and to limit the likeliness to be detected positive following passive exposure, this review identified specific biomarkers of passive exposure in urine, blood, oral fluid, hair, and sebum...
December 2016: Forensic Science International
https://www.readbyqxmd.com/read/27877130/cannabidiol-as-a-potential-new-type-of-an-antipsychotic-a-critical-review-of-the-evidence
#10
REVIEW
Cathrin Rohleder, Juliane K Müller, Bettina Lange, F M Leweke
There is urgent need for the development of mechanistically different and less side-effect prone antipsychotic compounds. The endocannabinoid system has been suggested to represent a potential new target in this indication. While the chronic use of cannabis itself has been considered a risk factor contributing to the development of schizophrenia, triggered by the phytocannabinoid delta-9-tetrahydrocannabinol (Δ(9)-THC), cannabidiol, the second most important phytocannabinoid, appears to have no psychotomimetic potential...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27866486/the-effects-of-cannabis-use-on-salience-attribution-a-systematic-review
#11
Surapi Bhairavi Wijayendran, Aisling O'Neill, Sagnik Bhattacharyya
OBJECTIVE: The relationship between cannabis use and the onset of psychosis is well established. Aberrant salience processing is widely thought to underpin many of these symptoms. Literature explicitly investigating the relationship between aberrant salience processing and cannabis use is scarce; with those few studies finding that acute tetrahydrocannabinol (THC) administration (the main psychoactive component of cannabis) can result in abnormal salience processing in healthy cohorts, mirroring that observed in psychosis...
November 21, 2016: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/27862053/fluorescence-based-lateral-flow-assays-for-rapid-oral-fluid-roadside-detection-of-cannabis-use
#12
Brian D Plouffe, Shashi K Murthy
With the recent worldwide changes in the legalization of marijuana, there is a significant need for rapid, road-side screening test for driving under the influence of drugs. A robust, sensitive, lateral flow assay has been developed to detect recent use via oral-fluid testing for Δ(9) -tetrahydrocannabinol (THC). This proof-of-concept assay uses a fluorescent-based immunoassay detection of polymeric beads, conjugated to antibodies against native THC. The fluorescent technique allows for significantly lower limits of detection and higher precision determination of recent marijuana use without the use of urine or blood sampling - thus allowing for roadside identification...
November 10, 2016: Electrophoresis
https://www.readbyqxmd.com/read/27853201/the-effects-of-%C3%AE-9-tetrahydrocannabinol-on-the-dopamine-system
#13
Michael A P Bloomfield, Abhishekh H Ashok, Nora D Volkow, Oliver D Howes
The effects of Δ(9)-tetrahydrocannabinol (THC), the main psychoactive ingredient in cannabis, are a pressing concern for global mental health. Patterns of cannabis use are changing drastically owing to legalization, the availability of synthetic analogues (commonly termed spice), cannavaping and an emphasis on the purported therapeutic effects of cannabis. Many of the reinforcing effects of THC are mediated by the dopamine system. Owing to the complexity of the cannabinoid-dopamine interactions that take place, there is conflicting evidence from human and animal studies concerning the effects of THC on the dopamine system...
November 16, 2016: Nature
https://www.readbyqxmd.com/read/27851727/high-resolution-crystal-structure-of-the-human-cb1-cannabinoid-receptor
#14
Zhenhua Shao, Jie Yin, Karen Chapman, Magdalena Grzemska, Lindsay Clark, Junmei Wang, Daniel M Rosenbaum
The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the functional responses to the endocannabinoids anandamide and 2-arachidonyl glycerol (2-AG), as well as the widely consumed plant (phyto)cannabinoid Δ(9)-tetrahydrocannabinol (THC)(1). The cannabinoid receptors have been the targets of intensive drug discovery efforts owing to the therapeutic potential of modulators for controlling pain(2), epilepsy(3), obesity(4), and other maladies. Although much progress has recently been made in understanding the biophysical properties of GPCRs, investigations of the molecular mechanisms of the cannabinoids and their receptors have lacked high-resolution structural data...
November 16, 2016: Nature
https://www.readbyqxmd.com/read/27834143/distribution-of-synthetic-cannabinoids-jwh-210-rcs-4-and-%C3%A2-9-tetrahydrocannabinol-after-intravenous-administration-to-pigs
#15
Nadine Schaefer, Mattias Kettner, Matthias W Laschke, Julia Schlote, Andreas H Ewald, Michael D Menger, Hans H Maurer, Peter H Schmidt
Synthetic cannabinoids (SCs) have become an increasing issue in forensic toxicology. Controlled human studies evaluating pharmacokinetic data of SCs are lacking and only few animal studies have been published. Thus, an interpretation of analytical results found in intoxicated or poisoned individuals is difficult. Therefore, the distribution of two selected SCs, namely 4-ethylnaphthalen-1-yl-(1-pentylindol-3-yl)methanone (JWH-210) and 2-(4-methoxyphenyl)-1-(1-pentyl-indol-3-yl)methanone (RCS-4) as well as ∆9-tetrahydrocannabinol (THC) as reference were examined in pigs...
November 11, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27826249/cannabinoid-cb1-receptors-are-localized-in-striated-muscle-mitochondria-and-regulate-mitochondrial-respiration
#16
Juan Mendizabal-Zubiaga, Su Melser, Giovanni Bénard, Almudena Ramos, Leire Reguero, Sergio Arrabal, Izaskun Elezgarai, Inmaculada Gerrikagoitia, Juan Suarez, Fernando Rodríguez De Fonseca, Nagore Puente, Giovanni Marsicano, Pedro Grandes
The cannabinoid type 1 (CB1) receptor is widely distributed in the brain and peripheral organs where it regulates cellular functions and metabolism. In the brain, CB1 is mainly localized on presynaptic axon terminals but is also found on mitochondria (mtCB1), where it regulates cellular respiration and energy production. Likewise, CB1 is localized on muscle mitochondria, but very little is known about it. The aim of this study was to further investigate in detail the distribution and functional role of mtCB1 in three different striated muscles...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27815614/cannabinoids-assessment-in-plasma-and-urine-by-high-performance-liquid-chromatography-tandem-mass-spectrometry-after-molecularly-imprinted-polymer-microsolid-phase-extraction
#17
Juan Sánchez-González, Rocío Salgueiro-Fernández, Pamela Cabarcos, Ana María Bermejo, Pilar Bermejo-Barrera, Antonio Moreda-Piñeiro
A molecularly imprinted polymer (MIP) selective for cannabinoids [Δ(9)-tetrahydrocannabinol (Δ9-THC), 11-nor-9-carboxy-Δ(9)-tetrahydrocannabinol (Δ9-THC-COOH), and 11-hydroxy-Δ(9)-tetrahydrocannabinol (Δ9-THC-OH)] has been synthesized, fully characterized, and applied to the assessment of plasma and urine analysis of marijuana abuse by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Δ9-THC-COOH was used as a template molecule, whereas ethylene glycol dimethacrylate (EGDMA) was used as a functional monomer, divinylbenzene (DVB) as a cross-linker, and 2,2'-azobisisobutyronitrile (AIBN) as an initiator...
November 4, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27811555/targeting-the-endocannabinoid-system-in-psychiatric-illness
#18
Martin A Katzman, Melissa Furtado, Leena Anand
Prevalence of psychiatric disorders continues to rise globally, yet remission rates and patient outcome remain less than ideal. As a result, novel treatment approaches for these disorders are necessary to decrease societal economic burden, as well as increase individual functioning. The recent discovery of the endocannabinoid system has provided an outlet for further research into its role in psychiatric disorders, because efficacy of targeted treatments have been demonstrated in medical illnesses, including cancers, neuropathic pain, and multiple sclerosis...
December 2016: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/27810658/international-approaches-to-driving-under-the-influence-of-cannabis-a-review-of-evidence-on-impact
#19
REVIEW
Tara Marie Watson, Robert E Mann
BACKGROUND: There are knowledge gaps regarding the effectiveness of different approaches designed to prevent and deter driving under the influence of cannabis (DUIC). Policymakers are increasingly interested in evidence-based responses to DUIC as numerous jurisdictions worldwide have legally regulated cannabis or are debating such regulation. We contribute a comprehensive review of international literature on countermeasures that address DUIC, and identify where and how such measures have been evaluated...
December 1, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27804883/pros-and-cons-of-medical-cannabis-use-by-people-with-chronic-brain-disorders
#20
Uma Suryadevara, Dawn M Bruijnzeel, Meena Nuthi, Darin A Jagnarine, Rajiv Tandon, Adriaan W Bruijnzeel
BACKGROUND: Cannabis is the most widely used illicit drug in the world and there is growing concern about the mental health effects of cannabis use. These concerns are at least partly due to the strong increase in recreational and medical cannabis use and the rise in tetrahydrocannabinol (THC) levels. Cannabis is widely used to self-medicate by older people and people with brain disorders such as amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), Alzheimer's disease (AD), Parkinson's disease (PD), bipolar disorder, and schizophrenia...
October 31, 2016: Current Neuropharmacology
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