Search results for "glutamate release"

showing 2 items of 2 documents

Inhibition by Anandamide and Synthetic Cannabimimetics of the Release of [3H]d-Aspartate and [3H]GABA from Synaptosomes Isolated from the Rat Hippoca…

2004

Cannabinoids (CB) can act as retrograde synaptic mediators of depolarization-induced suppression of inhibition or excitation in hippocampus. This mechanism may underlie the impairment of some cognitive processes produced by these compounds, including short-term memory formation in the hippocampus. In this study, we investigated several compounds known to interact with CB receptors, evaluating their effects on K +-evoked release of [ 3H]d-aspartate ([ 3H]d-ASP) and [ 3H]GABA from superfused synaptosomes isolated from the rat hippocampus. [ 3H]d-ASP and [ 3H]GABA release were inhibited to different degrees by the synthetic cannabinoids WIN 55,212-2; CP 55,940, and arachidonyl-2′- chloroethyla…

MaleCannabinoid receptorSettore BIO/14 - FARMACOLOGIAPolyunsaturated Alkamidesmedicine.medical_treatmentHippocampusArachidonic AcidsPharmacologyHippocampal formationDepolarization-induced suppression of inhibitionHippocampusBiochemistryCellular and Molecular Neurosciencechemistry.chemical_compoundglutamate releasemedicineAnimalsRats WistarCannabinoidgamma-Aminobutyric AcidCannabinoid Receptor AgonistsAspartic AcidCannabinoidsChemistryGeneral MedicineAnandamideCyclohexanolsgaba releaseEndocannabinoid systemRatsKineticsnervous systemBiochemistryAnimals Arachidonic Acids Aspartic Acid Calcium Cannabinoids Capsaicin Cyclohexanols gamma-Aminobutyric Acid Hippocampus Kinetics Polyunsaturated Alkamides Potassium Rats Receptors Cannabinoid SynaptosomesPotassiumCalciumlipids (amino acids peptides and proteins)CannabinoidCapsaicinCapsazepineEndocannabinoidsSynaptosomesNeurochemical Research
researchProduct

Presynaptic effects of anandamide and WIN55,212-2 on glutamatergic nerve endings isolated from rat hippocampus

2006

We examined the effects of the endocannabinoide-anandamide (AEA), the synthetic cannabinoid, WIN55,212-2, and the active phorbol ester, 4-beta-phorbol 12-myristate 13-acetate (4-beta-PMA), on the release of [(3)H]d-Aspartate ([(3)H]d-ASP) from rat hippocampal synaptosomes. Release was evoked with three different stimuli: (1) KCl-induced membrane depolarization, which activates voltage-dependent Ca(2+) channels and causes limited neurotransmitter exocytosis, presumably from ready-releasable vesicles docked in the active zone; (2) exposure to the Ca(2+) ionophore-A23187, which causes more extensive transmitter release, presumably from intracellular reserve vesicles; and (3) K(+) channel block…

MaleSettore BIO/14 - FARMACOLOGIAPolyunsaturated AlkamideshippocampusMorpholinesmedicine.medical_treatmentPresynaptic TerminalsArachidonic AcidsNaphthalenesExocytosisCellular and Molecular Neurosciencechemistry.chemical_compoundGlutamatesglutamate releasemedicineAnimalsanandamideActive zoneRats WistarNeurotransmitterCannabinoidCalcimycinProtein kinase CSynaptosomeArachidonic AcidChemistrysynaptosomesDepolarizationCell BiologyAnandamideHippocampal synaptosomeCalcium Channel BlockersBenzoxazinesRatsBiochemistryBiophysicsTetradecanoylphorbol AcetateCannabinoidCapsaicinEndocannabinoidsNeurochemistry International
researchProduct