6533b7d3fe1ef96bd1260c2a
RESEARCH PRODUCT
The endocannabinoid system controls key epileptogenic circuits in the hippocampus.
Walter ZieglgänsbergerWolfgang KelschCarsten T. WotjakKen MackieKrisztina MonoryRudolf MarschMatthias KlugmannMaurice R. ElphickMatthew J. DuringMatthias EderRuth E. WestenbroekKlaus-armin NaveFederico MassaFederico MassaMarc EkkerMichaela EgertováJohn L.r. RubensteinHans-ulrich DodtBeat LutzSandra GoebbelsGiovanni MarsicanoGiovanni MarsicanoBarbara WölfelJason E. LongWolfgang JacobHeike Blaudzunsubject
MaleVesicular glutamate transporter 1HUMDISEASEHippocampusGene ExpressionHippocampal formationHippocampusMembrane Potentialschemistry.chemical_compoundMice0302 clinical medicineReceptor Cannabinoid CB1Premovement neuronal activitygamma-Aminobutyric Acid0303 health sciencesKainic AcidbiologyBehavior AnimalReverse Transcriptase Polymerase Chain Reactionmusculoskeletal neural and ocular physiologyGeneral NeurosciencePyramidal CellsCalcium Channel BlockersEndocannabinoid systemlipids (amino acids peptides and proteins)psychological phenomena and processesmedicine.drugKainic acidNeuroscience(all)MorpholinesGlutamic AcidMice TransgenicNaphthalenesMOLNEUROgamma-Aminobutyric acid03 medical and health sciencesGlutamatergicCannabinoid Receptor ModulatorsmedicineAnimals030304 developmental biologyAnalysis of VarianceEpilepsyBenzoxazinesMice Inbred C57BLnervous systemchemistryCalcium-Calmodulin-Dependent Protein KinasesVesicular Glutamate Transport Protein 1biology.proteinNerve NetSYSNEUROCalcium-Calmodulin-Dependent Protein Kinase Type 2Neuroscience030217 neurology & neurosurgeryEndocannabinoidsdescription
SummaryBalanced control of neuronal activity is central in maintaining function and viability of neuronal circuits. The endocannabinoid system tightly controls neuronal excitability. Here, we show that endocannabinoids directly target hippocampal glutamatergic neurons to provide protection against acute epileptiform seizures in mice. Functional CB1 cannabinoid receptors are present on glutamatergic terminals of the hippocampal formation, colocalizing with vesicular glutamate transporter 1 (VGluT1). Conditional deletion of the CB1 gene either in cortical glutamatergic neurons or in forebrain GABAergic neurons, as well as virally induced deletion of the CB1 gene in the hippocampus, demonstrate that the presence of CB1 receptors in glutamatergic hippocampal neurons is both necessary and sufficient to provide substantial endogenous protection against kainic acid (KA)-induced seizures. The direct endocannabinoid-mediated control of hippocampal glutamatergic neurotransmission may constitute a promising therapeutic target for the treatment of disorders associated with excessive excitatory neuronal activity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-08-01 | Neuron |