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https://www.readbyqxmd.com/read/29151076/modulation-of-the-endocannabinoid-system-by-the-fatty-acid-amide-hydrolase-monoacylglycerol-and-diacylglycerol-lipase-inhibitors-as-an-attractive-target-for-secretory-diarrhoea-therapy
#1
A Wasilewski, A Misicka, M Sacharczuk, J Fichna
Secretory diarrhoea is a leading cause of mortality and morbidity worldwide. Our aim was to characterize the effect of inhibition of selected enzymes involved in the synthesis or degradation of endocannabinoids on electrolyte equilibrium in the mouse colonic tissue. The aim of this study was to evaluate the effects of PF-3845, JZL-184 and RHC-80267, as inhibitors of fatty acid amide hydrolase (FAAH), monoacylglycerol (MAGL) and diacylglycerol lipase (DAGL), respectively on epithelial ion transport in isolated mouse colon stimulated by forskolin (FSK), veratridine (VER) and bethanechol (BET)...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29145497/rare-genetic-variants-in-the-endocannabinoid-system-genes-cnr1-and-dagla-are-associated-with-neurological-phenotypes-in-humans
#2
Douglas R Smith, Christine M Stanley, Theodore Foss, Richard G Boles, Kevin McKernan
Rare genetic variants in the core endocannabinoid system genes CNR1, CNR2, DAGLA, MGLL and FAAH were identified in molecular testing data from 6,032 patients with a broad spectrum of neurological disorders. The variants were evaluated for association with phenotypes similar to those observed in the orthologous gene knockouts in mice. Heterozygous rare coding variants in CNR1, which encodes the type 1 cannabinoid receptor (CB1), were found to be significantly associated with pain sensitivity (especially migraine), sleep and memory disorders-alone or in combination with anxiety-compared to a set of controls without such CNR1 variants...
2017: PloS One
https://www.readbyqxmd.com/read/29138268/n-acyl-amino-acids-elmiric-acids-endogenous-signaling-molecules-with-therapeutic-potential
#3
Sumner Burstein
The subject of N-acyl amino acid conjugates has been rapidly growing in recent years, especially with regard to their analgesic and anti-inflammatory actions. The field is comprised of a large family of lipid signaling molecules whose importance is only now being fully realized. The most widely studied member is N-arachidonoyl glycine (NAGly), which differs structurally from the endocannabinoid anandamide (N-arachidonoyl ethanolamide) by a single oxygen atom and the two are metabolically related. Topics that are covered in this mini review are: biosynthetic pathways for N-acyl amino acids, receptors for N-acyl amino acids, physiological actions of N-acyl amino acids, pharmacological effects of N-acyl amino acids and molecular mechanisms believed to be responsible for their effects...
November 14, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/29138223/effect-of-maternal-high-fat-diet-on-key-components-of-the-placental-and-hepatic-endocannabinoid-system
#4
Kushal Gandhi, Cun Li, Nadezhda German, Cezary Skobowiat, Maira Carrillo, Raja Reddy Kallem, Eneko Larumbe, Stacy Martinez, Marcel Chuecos, Gary Ventolini, Peter Nathanielsz, Natalia Schlabritz-Loutsevitch
INTRODUCTION: Involvement of endogenous cannabinoids (eCBs) in obesity is well-characterized. However, information regarding eCB physiology in obesity associated with pregnancy is sparse. METHODS: From at least 9 months before conception, non-pregnant baboons (Papio spp.) were fed a diet of either 45% fat (HFD; n=11) or 12% fat or a control diet (CTR; n=11), and dietary intervention continued through pregnancy. Maternal and fetal venous plasma samples were evaluated using liquid chromatography-mass spectrometry to quantify anandamide (AEA) and 2-arachidonoyl glycerol (2-AG)...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126855/n-docosahexaenoylethanolamine-synaptamide-carbon-14-radiolabeling-and-metabolic-studies
#5
Shilpa Sonti, Richard I Duclos, Mansi Tolia, Samuel J Gatley
N-Docosahexaenoylethanolamine (synaptamide) is structurally similar to the endocannabinoid N-arachidonoylethanolamine (anandamide), but incorporates the omega-3 22:6 fatty acid docosahexaenoic acid (DHA) in place of the omega-6 20:4 fatty acid arachidonic acid (AA). Some brain membrane lipid effects may be mediated via synaptamide. In competition experiments with mouse brain homogenate in vitro, we found that synaptamide was an order-of-magnitude poorer inhibitor of radioactive anandamide hydrolysis than was anandamide itself...
November 7, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/29102876/maternal-high-fat-diet-induces-sex-specific-endocannabinoid-system-changes-in-newborn-rats-and-programs-adiposity-energy-expenditure-and-food-preference-in-adulthood
#6
Camilla P Dias-Rocha, Mariana M Almeida, Erika M Santana, Julia C B Costa, Juliana G Franco, Carmen C Pazos-Moura, Isis H Trevenzoli
Early life inadequate nutrition triggers developmental adaptations and adult chronic disease. Maternal high-fat (HF) diet promotes visceral obesity and hypothalamic leptin resistance in male rat offspring at weaning and adulthood. Obesity is related to over active endocannabinoid system (ECS). The ECS consists mainly of endogenous ligands, cannabinoid receptors (CB1 and CB2), and the enzymes fatty acid anandamide hydrolase (FAAH) and monoacylglycerol lipase (MAGL). We hypothesized that perinatal maternal HF diet would regulate offspring ECS in hypothalamus and brown adipose tissue (BAT) at birth, prior to visceral obesity development, and program food preference and energy expenditure of adult offspring...
October 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29097212/effects-of-acute-exposure-to-chlorpyrifos-on-cholinergic-and-non-cholinergic-targets-in-normal-and-high-fat-fed-male-c57bl-6j-mice
#7
Sandeep Kondakala, Jung Hwa Lee, Matthew K Ross, George E Howell
The prevalence of obesity is increasing at an alarming rate in the United States with 36.5% of adults being classified as obese. Compared to normal individuals, obese individuals have noted pathophysiological alterations which may alter the toxicokinetics of xenobiotics and therefore alter their toxicities. However, the effects of obesity on the toxicity of many widely utilized pesticides has not been established. Therefore, the present study was designed to determine if the obese phenotype altered the toxicity of the most widely used organophosphate (OP) insecticide, chlorpyrifos (CPS)...
December 15, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29071769/inhibition-of-fatty-acid-amide-hydrolase-in-the-central-amygdala-alleviates-co-morbid-expression-of-innate-anxiety-and-excessive-alcohol-intake
#8
Serena Stopponi, Yannick Fotio, Ana Domi, Anna Maria Borruto, Luis Natividad, Marisa Roberto, Roberto Ciccocioppo, Nazzareno Cannella
Fatty acid amide hydrolase (FAAH) is an enzyme that prominently degrades the major endocannabinoid N-arachidonoylethanolamine (anandamide). Inhibition of this enzyme leads to increased anandamide levels in brain regions that modulate stress and anxiety. Recently, we found that genetically selected Marchigian Sardinian alcohol-preferring (msP) rats display hyperactive FAAH in amygdalar regions that was associated with increased stress sensitivity and a hyper-anxious phenotype. Our previous work has also demonstrated that msPs display an innate preference for and excessive consumption of alcohol, potentially reflecting a form of self-medication to gain relief from hyper-anxious states...
October 26, 2017: Addiction Biology
https://www.readbyqxmd.com/read/29056914/acetaminophen-induced-liver-injury-alters-the-acyl-ethanolamine-based-anti-inflammatory-signaling-system-in-liver
#9
Patricia Rivera, Antoni Pastor, Sergio Arrabal, Juan Decara, Antonio Vargas, Laura Sánchez-Marín, Francisco J Pavón, Antonia Serrano, Dolores Bautista, Anna Boronat, Rafael de la Torre, Elena Baixeras, M Isabel Lucena, Fernando R de Fonseca, Juan Suárez
Protective mechanisms against drug-induced liver injury are actively being searched to identify new therapeutic targets. Among them, the anti-inflammatory N-acyl ethanolamide (NAE)-peroxisome proliferators activated receptor alpha (PPARα) system has gained much interest after the identification of its protective role in steatohepatitis and liver fibrosis. An overdose of paracetamol (APAP), a commonly used analgesic/antipyretic drug, causes hepatotoxicity, and it is being used as a liver model. In the present study, we have analyzed the impact of APAP on the liver NAE-PPARα system...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29038048/the-influence-of-doca-salt-hypertension-and-chronic-administration-of-the-faah-inhibitor-urb597-on-kca2-3-kca3-1-edh-type-relaxation-in-rat-small-mesenteric-arteries
#10
Monika Kloza, Marta Baranowska-Kuczko, Barbara Malinowska, Olga Karpińska, Ewa Harasim-Symbor, Irena Kasacka, Hanna Kozłowska
The aim of this study was to examine the influence of deoxycorticosterone acetate-salt (DOCA-salt) hypertension and chronic treatment with the fatty acid amide hydrolase inhibitor, URB597, on small and intermediate conductance calcium-activated potassium channels and endothelium-dependent hyperpolarization (KCa2.3/KCa3.1-EDH) in rat small mesenteric arteries (sMAs). The EDH-type response was investigated, in endothelium-intact sMAs using a wire myograph, by examining acetylcholine-evoked vasorelaxation in the presence of N(ω)-nitro-L-arginine methyl ester and indomethacin (inhibitors of nitric oxide synthase and cyclooxygenase, respectively)...
October 14, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/29017758/in-vitro-and-in-vivo-pharmacological-characterization-of-asp8477-a-novel-highly-selective-fatty-acid-amide-hydrolase-inhibitor
#11
Tomonari Watabiki, Noriko Tsuji, Tetsuo Kiso, Tohru Ozawa, Fumie Narazaki, Shuichiro Kakimoto
Although exogenous agonists for cannabinoid (CB) receptors are clinically effective for treating chronic pain, global activation of brain CB receptors causes frequent central nervous system (CNS) side-effects. Fatty acid amide hydrolase (FAAH) is a primary catabolic enzyme for anandamide (AEA), an endogenous CB. Recently, we discovered a novel FAAH inhibitor, 3-pyridyl 4-(phenylcarbamoyl)piperidine-1-carboxylate (ASP8477). In vitro studies demonstrated that ASP8477 inhibited human FAAH-1, FAAH-1 (P129T) and FAAH-2 activity with IC50 values of 3...
November 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28963903/fatty-acid-amide-hydrolase-inhibitor-urb597-may-protect-against-kainic-acid-induced-damage-to-hippocampal-neurons-dependence-on-the-degree-of-injury
#12
Irina B Mikheeva, Liubov Shubina, Nataliya Matveeva, Luybov L Pavlik, Valentina F Kitchigina
OBJECTIVE: Status epilepticus (SE) provokes changes, which lead to neuronal alterations. Endocannabinoids (eCBs) can affect the neuronal survival during excitotoxicity and brain damage. Using a kainic acid (KA)-induced experimental SE model, we investigated whether cellular changes entail damage to endoplasmic reticulum (ER), mitochondria, and nuclei in hippocampal cells (CA1 field), and whether these alterations can be diminished by treatment with URB597, an inhibitor of eCB enzymatic degradation...
September 22, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28947487/cannabinoid-cb1-discrimination-effects-of-endocannabinoids-and-catabolic-enzyme-inhibitors
#13
Michael Z Leonard, Shakiru O Alapafuja, Lipin Ji, Vidyanand G Shukla, Yingpeng Liu, Spyros P Nikas, Alexandros Makriyannis, Jack Bergman, Brian D Kangas
An improved understanding of the endocannabinoid system has provided new avenues of drug discovery and development toward the management of pain and other behavioral maladies. Exogenous cannabinoid type-1 (CB1) receptor agonists such as Δ9-tetrahydrocannabinol are increasingly utilized for their medicinal actions; however, their utility is constrained by concern regarding abuse-related subjective effects. This has led to growing interest in the clinical benefit of indirectly enhancing the activity of the highly labile endocannabinoids N-arachidonoylethanolamine (anandamide; AEA) and/or 2-arachidonoylglycerol (2-AG) via catabolic enzyme inhibition...
September 25, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28936880/development-of-terphenyl-2-methyloxazol-5-4h-one-derivatives-as-selective-reversible-magl-inhibitors
#14
Carlotta Granchi, Isabella Caligiuri, Eleonora Bertelli, Giulio Poli, Flavio Rizzolio, Marco Macchia, Adriano Martinelli, Filippo Minutolo, Tiziano Tuccinardi
Monoacylglycerol lipase is a serine hydrolase that plays a major role in the degradation of the endocannabinoid neurotransmitter 2-arachidonoylglycerol. A wide number of MAGL inhibitors are reported in literature; however, many of them are characterised by an irreversible mechanism of action and this behavior determines an unwanted chronic MAGL inactivation, which acquires a functional antagonism of the endocannabinoid system. The possible use of reversible MAGL inhibitors has only recently been explored, due to the lack of known compounds possessing efficient reversible inhibitory activities...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28931663/targeting-fatty-acid-amide-hydrolase-as-a-therapeutic-strategy-for-antitussive-therapy
#15
Michael A Wortley, John J Adcock, Eric D Dubuis, Sarah A Maher, Sara J Bonvini, Isabelle Delescluse, Ross Kinloch, Gordon McMurray, Christelle Perros-Huguet, Marianthi Papakosta, Mark A Birrell, Maria G Belvisi
Cough is the most common reason to visit a primary care physician, yet it remains an unmet medical need. Fatty acid amide hydrolase (FAAH) is an enzyme that breaks down endocannabinoids, and inhibition of FAAH produces analgesic and anti-inflammatory effects. Cannabinoids inhibit vagal sensory nerve activation and the cough reflex, so it was hypothesised that FAAH inhibition would produce antitussive activity via elevation of endocannabinoids.Primary vagal ganglia neurons, tissue bioassay, in vivo electrophysiology and a conscious guinea pig cough model were utilised to investigate a role for fatty acid amides in modulating sensory nerve activation in vagal afferents...
September 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28917977/the-role-of-the-endocannabinoid-system-in-the-antihyperalgesic-effect-of-cedrus-atlantica-essential-oil-inhalation-in-a-mouse-model-of-postoperative-pain
#16
Aline Armiliato Emer, Nathalia Nahas Donatello, Ana Paula Batisti, Luiz Augusto Oliveira Belmonte, Adair R S Santos, Daniel F Martins
ETHNOPHARMACOLOGICAL RELEVANCE: Cedar is part of the phylum of conifers, and it's essential oil has been used for therapeutic purposes since ancient times. In our previous study, we have demonstrated that the inhalation of the Cedrus atlantica essential oil (CaEO) induces an antihyperalgesic effect in a model of postoperative pain. But the mechanism that underlies this effect is not yet fully known. AIM OF THE STUDY: This study investigates the involvement of the endocannabinoid system in the antihyperalgesic effect produced by the inhalation of CaEO in a post operative pain model...
September 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28910408/effects-of-tumour-necrosis-factor-%C3%AE-upon-the-metabolism-of-the-endocannabinoid-anandamide-in-prostate-cancer-cells
#17
Jessica Karlsson, Sandra Gouveia-Figueira, Mireille Alhouayek, Christopher J Fowler
Tumour necrosis factor α (TNFα) is involved in the pathogenesis of prostate cancer, a disease where disturbances in the endocannabinoid system are seen. In the present study we have investigated whether treatment of DU145 human prostate cancer cells affects anandamide (AEA) catabolic pathways. Additionally, we have investigated whether cyclooxygenase-2 (COX-2) can regulate the uptake of AEA into cells. Levels of AEA synthetic and catabolic enzymes were determined by qPCR. AEA uptake and hydrolysis in DU145 and RAW264...
2017: PloS One
https://www.readbyqxmd.com/read/28894217/the-faah-inhibitor-urb597-suppresses-hippocampal-maximal-dentate-afterdischarges-and-restores-seizure-induced-impairment-of-short-and-long-term-synaptic-plasticity
#18
Roberto Colangeli, Massimo Pierucci, Arcangelo Benigno, Giuseppe Campiani, Sefania Butini, Giuseppe Di Giovanni
Synthetic cannabinoids and phytocannabinoids have been shown to suppress seizures both in humans and experimental models of epilepsy. However, they generally have a detrimental effect on memory and memory-related processes. Here we compared the effect of the inhibition of the endocannabinoid (eCB) degradation versus synthetic CB agonist on limbic seizures induced by maximal dentate activation (MDA) acute kindling. Moreover, we investigated the dentate gyrus (DG) granule cell reactivity and synaptic plasticity in naïve and in MDA-kindled anaesthetised rats...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28890367/enhanced-anandamide-signaling-reduces-flight-behavior-elicited-by-an-approaching-robo-beetle
#19
Daniel E Heinz, Andreas Genewsky, Carsten T Wotjak
Our current knowledge of the implications of endocannabinoids in fear and anxiety is largely based on fear conditioning paradigms and approach-avoidance conflicts. Here we establish the ethobehavioral beetle mania task (BMT), which confronts mice with an erratically moving robo-beetle. With the help of this task we demonstrate decreased tolerance yet increased avoidance responses to an approaching beetle in high-anxiety behavior (HAB) and BALBc mice compared to C57BL/6N, CD1 and normal-anxiety behavior (NAB) mice...
September 7, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28889355/tingenone-a-pentacyclic-triterpene-induces-peripheral-antinociception-due-to-cannabinoid-receptors-activation-in-mice
#20
C C Veloso, R C M Ferreira, V G Rodrigues, L P Duarte, A Klein, I D Duarte, T R L Romero, A C Perez
Several works have shown that triterpenes induce peripheral antinociception by activation of cannabinoid receptors and endocannabinoids; besides, several research groups have reported activation of cannabinoid receptors in peripheral antinociception. The aim of this study was to assess the involvement of the cannabinoid system in the antinociceptive effect induced by tingenone against hyperalgesia evoked by prostaglandin E2 (PGE2) at peripheral level. The paw pressure test was used and the hyperalgesia was induced by intraplantar injection of PGE2 (2 μg/paw)...
September 9, 2017: Inflammopharmacology
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