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Stran 1 iz 36 rezultatov
Enhancement of the behavioral effects of endogenous and exogenous cannabinoid agonists by phenylmethyl sulfonyl fluoride.
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Prijava / prijava
Marijuana's effects in humans are most often reported as intoxicating or therapeutic; yet, some humans report dysphoria or other negative affect. To evaluate whether differences in endocannabinoid levels might account for this variability, the present study examined whether sensitivity to
Fatty acid sulfonyl fluorides inhibit anandamide metabolism and bind to the cannabinoid receptor.
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Prijava / prijava
Arachidonoyl ethanolamide (anandamide) is an endogenous ligand for cannabinoid receptors (CB1, CB2) and a putative neurotransmitter. Phenylmethylsulfonyl fluoride (PMSF) is an inhibitor of the enzyme (an amidase) which hydrolyzes anandamide to arachidonic acid and ethanolamine. We report here that
Novel analogues of arachidonylethanolamide (anandamide): affinities for the CB1 and CB2 cannabinoid receptors and metabolic stability.
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Prijava / prijava
Several analogues of the endogenous cannabinoid receptor ligand arachidonylethanolamide (anandamide) were synthesized and evaluated in order to study (a) the structural requirements for high-affinity binding to the CB1 and CB2 cannabinoid receptors and (b) their hydrolytic stability toward
Behaviroal, pharmacological, and molecular characterization of an amphibian cannabinoid receptor.
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Investigation of cannabinoid pharmacology in a vertebrate with a phylogenetic history distinct from that of mammals may allow better understanding of the physiological significance of cannabinoid neurochemistry. Taricha granulosa, the roughskin newt, was used here to characterize an amphibian
The endogenous cannabinoid, anandamide, inhibits dopamine transporter function by a receptor-independent mechanism.
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The endocannabinoid, anandamide (AEA), modulates the activity of the dopamine transporter (DAT) in heterologous cells and synaptosomal preparations. The cellular mechanisms mediating this effect are unknown. The present studies employed live cell imaging techniques and the fluorescent, high affinity
Cannabinoid signaling in rat cerebellar granule cells: G-protein activation, inhibition of glutamate release and endogenous cannabinoids.
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Previous studies have indicated that cannabinoids inhibit presynaptic neurotransmitter release in brain through CB1 receptors. To examine this issue in a primary neuronal culture system, rat cerebellar granule cells (CGCs) were prepared. [35S]GTPgammaS binding assays in saponin-permeabilized CGCs
Pharmacological properties of cannabinoid receptors in the avian brain: similarity of rat and chicken cannabinoid1 receptor recognition sites and expression of cannabinoid2 receptor-like immunoreactivity in the embryonic chick brain.
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The pharmacological properties of brain cannabinoid receptors were investigated in brains of 35 day-old chickens, since little is known about the avian cannabinoid system. The cannabinoid1 receptor-selective antagonist ligand [3H]SR 141716A bound to chicken brain membranes with K(D) and Bmax values
Delta9-tetrahydrocannabinol, but not the endogenous cannabinoid receptor ligand anandamide, produces conditioned place avoidance.
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Although exogenous cannabinoid ligands such as delta9-tetrahydrocannabinol (THC) have been implicated in reward-related learning and aversion, the hedonic effects of the endogenous cannabinoid agonist anandamide (arachidonylethanolamide) have never been assessed. Thus, the effects of anandamide were
Effects of anandamide on cannabinoid receptors in rat brain membranes.
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Anandamide (arachidonylethanolamide) is a compound recently isolated from porcine brain as a putative endogenous ligand at cannabinoid receptors. The present studies examined the effects of anandamide on cannabinoid receptor binding sites and adenylyl cyclase in rat brain membranes. Receptor binding
Evidence for both inverse agonism at the cannabinoid CB1 receptor and the lack of an endogenous cannabinoid tone in the rat and guinea-pig isolated ileum myenteric plexus-longitudinal muscle preparation.
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OBJECTIVE
Cannabinoid receptor agonists reduce intestinal propulsion in rodents through the CB(1) receptor. In addition to its antagonistic activity at this receptor, rimonabant (N-(piperidino)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-pyrazole-carboxyamide) alone augments intestinal
Arachidonylsulfonyl derivatives as cannabinoid CB1 receptor and fatty acid amide hydrolase inhibitors.
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Arachidonylsulfonyl fluoride (3), reported here for the first time, is similar in potency to its known methyl arachidonylfluorophosphonate (2) analogue as an inhibitor of mouse brain fatty acid amide hydrolase activity (IC(50) 0.1 nM) and cannabinoid CB1 agonist [3H]CP 55,940 binding (IC(50) 304-530
Role of fatty acid amide hydrolase in the transport of the endogenous cannabinoid anandamide.
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A facilitated transport process that removes the endogenous cannabinoid anandamide from extracellular spaces has been identified. Once transported into the cytoplasm, fatty acid amide hydrolase (FAAH) is responsible for metabolizing the accumulated anandamide. We propose that FAAH contributes to
The binding of novel phenolic derivatives of anandamide to brain cannabinoid receptors.
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Prijava / prijava
Arachidonylethanolamide (N-2-hydroxyethyl-arachidonamide) or 'anandamide' is a naturally occurring derivative of arachidonic acid that has been shown to bind and activate cannabinoid receptors in the brain. Since other potent ligands for the cannabinoid receptor have an aromatic hydroxyl group, we
Anandamide amidohydrolase reacting with 2-arachidonoylglycerol, another cannabinoid receptor ligand.
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Two endogenous ligands for cannabinoid receptors, anandamide (arachidonylethanolamide) and 2-arachidonoylglycerol, lose their biological activities by enzymatic hydrolysis. A cDNA for a rat liver enzyme hydrolyzing anandamide as well as oleamide was overexpressed in COS-7 cells. When the particulate
Radiosynthesis and biodistribution in mice of a 18F-labeled analog of O-1302 for use in cerebral CB1 cannabinoid receptor imaging.
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The suitability of an 18F-labeled form of N-(piperidin-1-yl)-1-(2,4-dichlorophenyl)-5-(4'-(5-fluoropentyl)phenyl)-4-methyl-1H-pyrazole-3-carboxamide (1), a CB1 cannabinoid ligand with high binding affinity (Ki=0.91 nM) and moderate lipophilicity (log P7.4=2.9), as a radiotracer for positron emission
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