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Endocannabinoids

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https://www.readbyqxmd.com/read/28811049/marijuana-and-cannabinoids-in-esrd-and-earlier-stages-of-ckd
#1
Joshua L Rein, Christina M Wyatt
Marijuana is the most commonly used recreational drug in the United States, and legal recreational and medicinal use has gained public acceptance during the last decade. Twenty-nine US states have established medical marijuana programs, 8 of which have also legalized recreational marijuana, and Canada is expected to legalize recreational marijuana in 2018. Advanced chronic kidney disease (CKD) and end-stage renal disease (ESRD) are chronic conditions with significant associated morbidity and mortality. Patients experience substantial symptom burden that is frequently undertreated due to adverse medication side effects...
August 12, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28810692/resveratrol-protects-from-lipopolysaccharide-induced-inflammation-in-the-uterus-and-prevents-experimental-preterm-birth
#2
María Victoria Bariani, Fernando Correa, Emma Leishman, Ana Paula Domínguez Rubio, Andreína Arias, Aníbal Stern, Heather B Bradshaw, Ana María Franchi
STUDY QUESTION: Is resveratrol able to prevent the lipopolysaccharide (LPS)-induced preterm labor in 15-day pregnant BALB/c mice? SUMMARY ANSWER: Resveratrol prevented the LPS-induced onset of preterm labor in 64% of the cases and showed anti-inflammatory and tocolytic effects by downregulating COX-2 and iNOS expression and NOS activity, and by changing the uterine prostaglandin and endocannabinoid profiling. WHAT IS KNOWN ALREADY: Genital tract infections by Gram-negative bacteria are a common complication in human pregnancy and have been shown to increase risk of preterm delivery...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28808587/oral-administration-of-the-endocannabinoid-anandamide-during-lactation-effects-on-hypothalamic-cannabinoid-type-1-receptor-and-food-intake-in-adult-mice
#3
Carolina Aguirre, Valeska Castillo, Miguel Llanos
We have previously shown that administration of the endocannabinoid anandamide (AEA) during lactation leads to overweight, increased body fat accumulation, and insulin resistance in adult mice. This study was designed to elucidate if these effects are due to increased food intake, stimulated by an augmented abundance and binding ability of the hypothalamic cannabinoid type 1 receptor (CB1R). With this aim, male mice pups were treated with a daily oral dose of AEA during lactation. Adult mice were also treated with a single oral dose of AEA, to evaluate acute food intake during 4 h...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28803438/inhibitor-of-endocannabinoid-deactivation-protects-against-in-vitro-and-in-vivo-neurotoxic-effects-of-paraoxon
#4
Karen L G Farizatto, Sara A McEwan, Vinogran Naidoo, Spyros P Nikas, Vidyanand G Shukla, Michael F Almeida, Aaron Byrd, Heather Romine, David A Karanian, Alexandros Makriyannis, Ben A Bahr
The anticholinesterase paraoxon (Pxn) is related to military nerve agents that increase acetylcholine levels, trigger seizures, and cause excitotoxic damage in the brain. In rat hippocampal slice cultures, high-dose Pxn was applied resulting in a presynaptic vulnerability evidenced by a 64% reduction in synapsin IIb (syn IIb) levels, whereas the postsynaptic protein GluR1 was unchanged. Other signs of Pxn-induced cytotoxicity include the oxidative stress-related production of stable 4-hydroxynonenal (4-HNE)-protein adducts...
August 12, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28799775/a-review-of-the-therapeutic-antitumor-potential-of-cannabinoids
#5
Višnja Bogdanović, Jasminka Mrdjanović, Ivana Borišev
OBJECTIVES: The aim of this review is to discuss cannabinoids from a preclinical and clinical oncological perspective and provide the audience with a concise, retrospective overview of the most significant findings concerning the potential use of cannabinoids in cancer treatment. METHODS: A literature survey of medical and scientific databases was conducted with a focus on the biological and medical potential of cannabinoids in cancer treatment. RESULTS: Cannabis sativa is a plant rich in more than 100 types of cannabinoids...
August 11, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28799288/neuroprotective-activity-of-cannabinoid-receptor-2-against-oxidative-stress-and-apoptosis-in-rat-pups-having-experimentally-induced-congenital-hypothyroidism
#6
Mehmet Eray Alcigir, Halef Okan Dogan, Sevil Atalay Vural, Fatma Meriç Yilmaz
In this study, it was aimed to show the cannabinoid receptor-2 (CB2) role, which is a part of neuroprotective endocannabinoidal system, against increasing nitric oxide synthetase (iNOS, eNOS) levels and the apoptotic activity (caspase-3, caspase-9 and DNA in situ fragmentation) within the postnatal critical period in pups of pregnant rats with artificially induced maternal thyroid hormone (TH) deficiency. Each of the 3 groups established comprised 1 male and 2 female rats, and they were coupled. Their pups were used...
August 11, 2017: Developmental Neurobiology
https://www.readbyqxmd.com/read/28790443/endocannabinoid-tone-is-higher-in-healthy-lean-south-asian-than-white-caucasian-men
#7
Vasudev Kantae, Kimberly J Nahon, Maaike E Straat, Leontine E H Bakker, Amy C Harms, Mario van der Stelt, Thomas Hankemeier, Ingrid M Jazet, Mariëtte R Boon, Patrick C N Rensen
South Asians have a higher risk to develop obesity and related disorders compared to white Caucasians. This is likely in part due to their lower resting energy expenditure (REE) as related with less energy-combusting brown adipose tissue (BAT). Since overactivation of the endocannabinoid system is associated with obesity and low BAT activity, we hypothesized that South Asians have a higher endocannabinoid tone. Healthy lean white Caucasian (n = 10) and South Asian (n = 10) men were cold-exposed to activate BAT...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28789932/the-effects-of-anandamide-and-oleamide-on-cognition-depend-on-diurnal-variations
#8
Pavel E Rueda-Orozco, Corinne J Montes-Rodriguez Cj, Alejandra E Ruiz-Contreras, Monica Mendez-Diaz, Oscar Prospero-Garcia
Cannabinergic receptor 1 (CB1r) is highly expressed in almost the entire brain; hence, its activation affects diverse functions, including cognitive processes such as learning and memory. On the other hand, it has been demonstrated that CB1r expression fluctuates along the light-dark cycle. In this context, the objective of this work was to characterize the cannabinergic influence over cognitive processes and its relationship with the light-dark cycle. To this aim we studied the effects of two endogenous cannabinoids, anandamide (AEA) and oleamide (ODA), on the consolidation of memory and event-related potentials (ERPs) depending on the light-dark cycle...
August 5, 2017: Brain Research
https://www.readbyqxmd.com/read/28771697/effects-of-centrally-administered-endocannabinoids-and-opioids-on-orofacial-pain-perception-in-rats
#9
Marek Zubrzycki, Anna Janecka, Andreas Liebold, Mechthild Ziegler, Maria Zubrzycka
BACKGROUND AND PURPOSE: Endocannabinoids and opioids play a vital role in mediating pain-induced analgesia. The specific effects of these compounds within orofacial region are largely unknown. In this study we tried to determine whether the increase of cannabinoid and opioid concentration in cerebrospinal fluid affects impulse transmission between the motor centers localized in the vicinity of the third and fourth cerebral ventricles. EXPERIMENTAL APPROACH: The study objectives were realized on rats using the method allowing to record the amplitude of evoked tongue jerks (ETJ) in response to noxious tooth pulp stimulation...
August 3, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28768662/stimulation-of-diuresis-and-natriuresis-by-renomedullary-infusion-of-a-dual-inhibitor-of-fatty-acid-amide-hydrolase-and-monoacylglycerol-lipase
#10
Ashfaq Ahmad, Zdravka Daneva, Guangbi Li, Sara K Dempsey, Ningjun Li, Justin Poklis, Aron Lichtman, Pin-Lan Li, Joseph Kraft Ritter
The renal medulla, considered critical for the regulation of salt and water balance and long-term blood pressure control, is enriched in anandamide and two of its major metabolizing enzymes, cyclooxygenase-2 (COX-2) and fatty acid amide hydrolase (FAAH). Infusion of anandamide (15, 30 and 60 nmol/min/kg) into the renal medulla of C57BL/6J mice stimulated diuresis and salt excretion in a COX-2- but not COX-1-dependent manner. To determine if endogenous endocannabinoids in the renal medulla can elicit similar effects, the effects of intramedullary isopropyl dodecyl fluorophosphate (IDFP), which inhibits the two major endocannabinoid hydrolases, were studied...
August 2, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28767505/age-dependent-plasticity-in-endocannabinoid-modulation-of-pain-processing-through-postnatal-development
#11
Charlie H-T Kwok, Ian M Devonshire, Amer Imraish, Charles M Greenspon, Stevie Lockwood, Catherine Fielden, Andrew Cooper, Stephen Woodhams, Sarir Sarmad, Catherine A Ortori, David A Barrett, David Kendall, Andrew J Bennett, Victoria Chapman, Gareth J Hathway
Significant age and experience-dependent remodelling of spinal and supraspinal neural networks occur resulting in altered pain responses in early life. In adults endogenous opioid peptide and endocannabinoid (ECs) pain control systems exist which modify pain responses but the role they play in acute responses to pain and postnatal neurodevelopment is unknown. Here we have studied the changing role of the ECs in brainstem nuclei essential for the control of nociception from birth to adulthood in both rat and human...
August 1, 2017: Pain
https://www.readbyqxmd.com/read/28766743/mouse-retinal-ganglion-cell-signalling-is-dynamically-modulated-through-parallel-anterograde-activation-of-cannabinoid-and-vanilloid-pathways
#12
Andrew O Jo, Jennifer M Noel, Monika Lakk, Oleg Yarishkin, Daniel A Ryskamp, Koji Shibasaki, Maureen A McCall, David Križaj
How retinal ganglion cells (RGCs) process and integrate synaptic, mechanical, swelling stimuli with light inputs is an area of intense debate. The nociceptive cation channel TRPV1 (transient receptor potential vanilloid type 1) modulates RGC Ca(2+) signals and excitability yet the proportion of RGCs that express it remains unclear. Further, TRPV1's response to endocannabinoids (eCBs), the putative endogenous retinal activators unknown, as is the potential modulation by cannabinoid receptors (CBRs). The expression of TRPV1 in RGCs from the Ai9:Trpv1 reporter mouse was nonuniform with peak density in the early- and mid-peripheral retina...
August 2, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28765608/endocannabinoid-modulation-of-stimulus-specific-adaptation-in-inferior-colliculus-neurons-of-the-rat
#13
C Valdés-Baizabal, G G Parras, Y A Ayala, M S Malmierca
Cannabinoid receptors (CBRs) are widely distributed in the brain, including the inferior colliculus (IC). Here, we aim to study whether endocannabinoids influence a specific type of neuronal adaptation, namely, stimulus-specific adaptation (SSA) found in some IC neurons. SSA is important because it has been found as early as the level of the midbrain and therefore it may be a neuronal correlate of early indices of deviance detection. Furthermore, recent studies have demonstrated a direct link between SSA and MMN, that is widely used as an outcome measure in a variety of human neurodegenerative disorders...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28764155/role-of-endocannabinoids-on-neuroinflammation-in-autism-spectrum-disorder-prevention
#14
REVIEW
Syed Shahid Habib, Khalid Al-Regaiey, Shahid Bashir, Muhammad Iqbal
Autism Spectrum Disorder (ASD) disease has become a mounting socio-economical alarm around the world. Neuroinflammtion had been shown in postmortem brain specimens from ASD patients. The Endocannabinoids System (ES) consists of a family of locally produced, short-lived, endogenous, phospholipid-derived agonists (endocannabinoids) that control energy balance and body composition. The growing number of medical benefits of ES, such as their ability to regulate processes like neuroinflammation, neurogenesis and memory, raise the question of their potential role as a preventive treatment of ASD...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28759733/protective-effect-of-rimonabant-a-canabinoid-receptor-1-antagonist-on-nonalcoholic-fatty-liver-disease-in-a-rat-model-by-modulating-the-hepatic-expression-of-activin-a-and-follistatin
#15
Noha Ibrahim Hussien, Hanan I El-Kerdasy, Mohamed El-Tantawy Ibrahim
Non-alcoholic fatty liver disease (NAFLD) is a major cause of liver morbidity and mortality with no proven effective therapy yet. Endocannabinoid system plays an important role in various liver diseases. Activin A is a member of the transforming growth factor beta (TGF-β) superfamily and inhibits hepatocyte growth. Follistatin antagonizes the biological actions of activin A. The present study was designed to investigate the effect of rimonabant (a potent cannabinoid receptor1 (CB1) antagonist) on NAFLD induced by choline deficient (CD) diet in rats, as well as to detect whether it can modulate the hepatic expression of activin A and follistatin or not...
July 31, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28758944/interactions-between-the-kynurenine-and-the-endocannabinoid-system-with-special-emphasis-on-migraine
#16
REVIEW
Gábor Nagy-Grócz, Ferenc Zádor, Szabolcs Dvorácskó, Zsuzsanna Bohár, Sándor Benyhe, Csaba Tömböly, Árpád Párdutz, László Vécsei
Both the kynurenine and the endocannabinoid systems are involved in several neurological disorders, such as migraine and there are increasing number of reports demonstrating that there are interactions of two systems. Although their cooperation has not yet been implicated in migraine, there are reports suggesting this possibility. Additionally, the individual role of the endocannabinoid and kynurenine system in migraine is reviewed here first, focusing on endocannabinoids, kynurenine metabolites, in particular kynurenic acid...
July 30, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28757815/insulin-induces-a-shift-in-lipid-and-primary-carbon-metabolites-in-a-model-of-fasting-induced-insulin-resistance
#17
Keedrian I Olmstead, Michael R La Frano, Johannes Fahrmann, Dmitry Grapov, Jose A Viscarra, John W Newman, Oliver Fiehn, Daniel E Crocker, Fabian V Filipp, Rudy M Ortiz
INTRODUCTION: Prolonged fasting in northern elephant seals (NES) is characterized by a reliance on lipid metabolism, conservation of protein, and reduced plasma insulin. During early fasting, glucose infusion previously reduced plasma free fatty acids (FFA); however, during late-fasting, it induced an atypical elevation in FFA despite comparable increases in insulin during both periods suggestive of a dynamic shift in tissue responsiveness to glucose-stimulated insulin secretion. OBJECTIVE: To better assess the contribution of insulin to this fasting-associated shift in substrate metabolism...
May 2017: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28756656/targeting-fatty-acid-amide-hydrolase-with-prodrugs-for-cns-selective-therapy
#18
J Matthew Meinig, Skylar J Ferrara, Tania Banerji, Tapasree Banerji, Hannah S Sanford-Crane, Dennis Bourdette, Thomas S Scanlan
The blood-brain barrier (BBB) can be a substantial impediment to achieving therapeutic levels of drugs in the CNS. Certain chemical functionality such as the carboxylic acid is a general liability for BBB permeability preventing significant CNS distribution of a drug from a systemic dose. Here, we report a novel strategy for CNS-selective distribution of the carboxylic acid containing thyromimetic sobetirome using prodrugs targeted to fatty-acid amide hydrolase (FAAH), which is expressed in the brain. Two amide prodrugs of sobetirome were shown to be efficient substrates of FAAH with Vmax/KM values comparable to the natural endocannabinoid FAAH substrate anandamide...
July 30, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28754373/cannabidiol-disrupts-the-consolidation-of-specific-and-generalized-fear-memories-via-dorsal-hippocampus-cb1-and-cb2-receptors
#19
Cristina A J Stern, Thiago R da Silva, Ana M Raymundi, Camila P de Souza, Vinicius A Hiroaki-Sato, Luiza Kato, Francisco S Guimarães, Roberto Andreatini, Reinaldo N Takahashi, Leandro J Bertoglio
Pharmacological interventions able to modulate a fear memory while it is consolidated could have therapeutic value in tempering those maladaptively overconsolidated. Animal and human studies have shown the intensity of unconditioned stimulus delivered during fear conditioning influences qualitative and quantitative aspects of the memory to be established. By varying the shock intensity used for contextual pairing in rats, here we induced specific and more generalized long-term fear memories to investigate whether, how and where in the brain the cannabidiol (CBD; 3...
July 25, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28752643/combined-deficiency-of-the-cnr1-and-cnr2-receptors-protects-against-age-related-bone-loss-by-osteoclast-inhibition
#20
Antonia Sophocleous, Silvia Marino, Dilruba Kabir, Stuart H Ralston, Aymen I Idris
The endocannabinoid system plays a role in regulating bone mass and bone cell activity and inactivation of the type 1 (Cnr1) or type 2 (Cnr2) cannabinoid receptors influences peak bone mass and age-related bone loss. As the Cnr1 and Cnr2 receptors have limited homology and are activated by different ligands, we have evaluated the effects of combined deficiency of Cnr1 and 2 receptors (Cnr1/2(-/-) ) on bone development from birth to old age and studied ovariectomy induced bone loss in female mice. The Cnr1/2(-/-) mice had accelerated bone accrual at birth when compared with wild type littermates, and by 3 months of age, they had higher trabecular bone mass...
July 28, 2017: Aging Cell
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