2014
GABAergic striatal neurons project dendrites and axons into the postnatal subventricular zone leading to calcium activity
Young SZ, Lafourcade CA, Platel JC, Lin TV, Bordey A. GABAergic striatal neurons project dendrites and axons into the postnatal subventricular zone leading to calcium activity. Frontiers In Cellular Neuroscience 2014, 8: 10. PMID: 24478632, PMCID: PMC3904109, DOI: 10.3389/fncel.2014.00010.Peer-Reviewed Original ResearchSubventricular zoneStriatal neuronsSVZ cellsCalcium increaseCalcium activityNeurogenic subventricular zoneSource of GABAGABAergic striatal neuronsPatch-clamp recordingsPostnatal subventricular zoneNeural progenitor cellsGABAergic neuronsPostnatal neurogenesisGABAA receptorsGABAAR activationClamp recordingsCalcium imagingStriatal activityNeuronsProgenitor cellsGABAAxonsDepolarizationCellsDendrites
2010
Imaging and Recording Subventricular Zone Progenitor Cells in Live Tissue of Postnatal Mice
Lacar B, Young SZ, Platel JC, Bordey A. Imaging and Recording Subventricular Zone Progenitor Cells in Live Tissue of Postnatal Mice. Frontiers In Neuroscience 2010, 4: 43. PMID: 20700392, PMCID: PMC2918349, DOI: 10.3389/fnins.2010.00043.Peer-Reviewed Original ResearchSubventricular zoneSVZ cellsSubventricular zone progenitor cellsPatch-clamp recordingsCell populationsAstrocyte-like cellsFluorescent reporter miceRNA interference technologyNeurogenic zonesAcute slicesCellular diversityGlial cellsLateral ventricleMultiple cell populationsOlfactory bulbPostnatal brainClamp recordingsReporter miceFloxed miceTransgenic micePostnatal miceCalcium activityMiceProgenitor cellsGenetic labeling
2009
Ependymal cells along the lateral ventricle express functional P2X7 receptors
Genzen JR, Platel JC, Rubio ME, Bordey A. Ependymal cells along the lateral ventricle express functional P2X7 receptors. Purinergic Signalling 2009, 5: 299-307. PMID: 19274488, PMCID: PMC2717311, DOI: 10.1007/s11302-009-9143-5.Peer-Reviewed Original ResearchP2X7 receptorEpendymal cellsSubventricular zoneWhole-cell patch-clamp recordingsCentral nervous system injuryFunctional P2X7 receptorsFunctional purinergic receptorsNervous system injuryPatch-clamp recordingsMouse subventricular zoneSVZ neurogenic nicheNeural progenitor responseAbsence of responseSystem injuryCerebral ventricleProgenitor responseLateral ventricleNeurogenic nichePurinergic receptorsClamp recordingsExtracellular adenosineReceptorsCellular damageWidespread expressionInflammation
2004
Bergmann glial GlyT1 mediates glycine uptake and release in mouse cerebellar slices
Huang H, Barakat L, Wang D, Bordey A. Bergmann glial GlyT1 mediates glycine uptake and release in mouse cerebellar slices. The Journal Of Physiology 2004, 560: 721-736. PMID: 15331688, PMCID: PMC1665288, DOI: 10.1113/jphysiol.2004.067801.Peer-Reviewed Original ResearchConceptsWhole-cell patch-clamp recordingsGlycine receptor blockerMouse cerebellar slicesNMDA receptor activationVoltage-dependent inward currentsExtracellular glycine levelsPatch-clamp recordingsDependent glycine transportersReceptor blockersInhibitory neurotransmitterNMDA receptorsGlycine levelsBergmann gliaCerebellar slicesInward currentsReceptor activationGlycine transporterGliaGlycine transportGlyT1Glycine uptakeBlockersAgonistsIntact systemNeuronesGlial Glutamate Transporters Limit Spillover Activation of Presynaptic NMDA Receptors and Influence Synaptic Inhibition of Purkinje Neurons
Huang H, Bordey A. Glial Glutamate Transporters Limit Spillover Activation of Presynaptic NMDA Receptors and Influence Synaptic Inhibition of Purkinje Neurons. Journal Of Neuroscience 2004, 24: 5659-5669. PMID: 15215288, PMCID: PMC6729224, DOI: 10.1523/jneurosci.1338-04.2004.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAmino Acid Transport System X-AGAnimalsAntiportersCalciumCerebellumCystineEvoked PotentialsGamma-Aminobutyric AcidGlutamic AcidIn Vitro TechniquesMiceNerve FibersNeural InhibitionNeurogliaPatch-Clamp TechniquesPurkinje CellsReceptors, N-Methyl-D-AspartateReceptors, PresynapticRyanodineSynaptic TransmissionConceptsGlial glutamate transportersMiniature IPSCsPurkinje neuronsGlutamate transportersSpontaneous IPSCsSynaptic inhibitionInhibitory synapsesNMDAR activationWhole-cell patch-clamp recordingsPresynaptic NMDA receptorsPaired-pulse ratioMouse cerebellar slicesNMDA receptor activationPresynaptic NMDA receptor activationPatch-clamp recordingsBergmann glial cellsBeta-benzyloxyaspartic acidAdjacent Purkinje neuronsCystine-glutamate antiporterMIPSC frequencyGABAergic terminalsGABAergic synapsesGlial cellsNMDA receptorsExcitatory synapsesDistinct electrophysiological alterations in dentate gyrus versus CA1 glial cells from epileptic humans with temporal lobe sclerosis
Bordey A, Spencer DD. Distinct electrophysiological alterations in dentate gyrus versus CA1 glial cells from epileptic humans with temporal lobe sclerosis. Epilepsy Research 2004, 59: 107-122. PMID: 15246115, DOI: 10.1016/j.eplepsyres.2004.04.004.Peer-Reviewed Original ResearchConceptsTemporal lobe epilepsyGlial cellsCA1 regionHilar astrocytesPutative astrocytesIntractable temporal lobe epilepsySclerotic human hippocampusTemporal lobe sclerosisNon-sclerotic hippocampiPatch-clamp recordingsIntercellular couplingSuch patientsEpileptic hippocampusLobe epilepsyCell-attached patchesPatient groupElectrophysiological alterationsDentate gyrusEpileptic humansChannel expressionAstrocytesElectrophysiological propertiesHippocampusTumor casesHuman hippocampus
2003
Chemokine modulation of high‐conductance Ca2+‐sensitive K+ currents in microglia from human hippocampi
Bordey A, Spencer DD. Chemokine modulation of high‐conductance Ca2+‐sensitive K+ currents in microglia from human hippocampi. European Journal Of Neuroscience 2003, 18: 2893-2898. PMID: 14656339, DOI: 10.1111/j.1460-9568.2003.03021.x.Peer-Reviewed Original ResearchConceptsHigh-conductance Ca2MIP1-alphaAcute pathological processesNon-activated microgliaSensitive outward currentsPharmaco-resistant epilepsyPatch-clamp recordingsOutward current amplitudeHigh input resistanceChemokine modulationHippocampal slicesInjury siteBrain slicesChronic pathologiesMicrogliaEpileptic patientsAmeboid morphologyIntracellular Ca2Human hippocampusOutward currentsMigratory effectsInput resistancePositive labelingPathological processesMode of actionGABA Depolarizes Neuronal Progenitors of the Postnatal Subventricular Zone Via GABAA Receptor Activation
Wang DD, Krueger DD, Bordey A. GABA Depolarizes Neuronal Progenitors of the Postnatal Subventricular Zone Via GABAA Receptor Activation. The Journal Of Physiology 2003, 550: 785-800. PMID: 12807990, PMCID: PMC2343064, DOI: 10.1113/jphysiol.2003.042572.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsBarbituratesBenzodiazepinesCerebral VentriclesDose-Response Relationship, DrugElectrophysiologyGABA AntagonistsGamma-Aminobutyric AcidGlutamate DecarboxylaseIsoenzymesMembrane PotentialsMiceNeostriatumNeuronsPatch-Clamp TechniquesPicrotoxinPotassium ChannelsReceptors, GABA-AStem CellsZincConceptsRostral migratory streamGABAA receptor activationSubventricular zoneNeuronal progenitorsReceptor activationGlutamic acid decarboxylase 67Resting potentialsPostnatal mammalian brainPatch-clamp recordingsSVZ/RMSMouse brain slicesRecorded cellsCell-attached patchesGABA responsesBrain slicesNeurotransmitter GABASubset of progenitorsBenzodiazepine agonistsEmbryonic neuronsAction potentialsMammalian brainMigratory streamGABAInverse agonistSpecific receptorsBiophysical Properties and Ionic Signature of Neuronal Progenitors of the Postnatal Subventricular Zone In Situ
Wang DD, Krueger DD, Bordey A. Biophysical Properties and Ionic Signature of Neuronal Progenitors of the Postnatal Subventricular Zone In Situ. Journal Of Neurophysiology 2003, 90: 2291-2302. PMID: 12801891, DOI: 10.1152/jn.01116.2002.Peer-Reviewed Original ResearchConceptsRostral migratory streamSubventricular zonePassive membrane propertiesNeuronal progenitorsCell-attached patch-clamp recordingsNeuron-specific class IIIPostnatal mammalian brainPostnatal day 15Patch-clamp recordingsMigration of progenitorsPostnatal subventricular zoneHigh input resistanceCell-attached patchesBrain slicesOlfactory bulbMature neuronsStrong immunoreactivityTransient outwardDay 15KDR currentElectrophysiological propertiesAction potentialsMammalian brainMigratory streamClass IIIModulation of Glutamatergic Transmission by Bergmann Glial Cells in Rat Cerebellum In Situ
Bordey A, Sontheimer H. Modulation of Glutamatergic Transmission by Bergmann Glial Cells in Rat Cerebellum In Situ. Journal Of Neurophysiology 2003, 89: 979-988. PMID: 12574474, DOI: 10.1152/jn.00904.2002.Peer-Reviewed Original ResearchMeSH Keywords6-Cyano-7-nitroquinoxaline-2,3-dioneAmino Acid Transport System X-AGAnimalsAspartic AcidCell CommunicationElectric StimulationExcitatory Amino Acid AgonistsExcitatory Amino Acid AntagonistsExcitatory Postsynaptic PotentialsGlutamic AcidMembrane PotentialsNerve FibersNeurogliaN-MethylaspartatePatch-Clamp TechniquesPurkinje CellsRatsRats, Sprague-DawleyReceptors, GlutamateSodiumSynaptic TransmissionConceptsExcitatory postsynaptic currentsBergmann glial cellsGlial cellsPurkinje cell synapseInward currentsCell synapseGlu transportPurkinje cellsSpontaneous excitatory postsynaptic currentsAbsence of TTXPresynaptic glutamate releaseCerebellar brain slicesSpontaneous EPSC frequencyPatch-clamp recordingsSingle glial cellsIonotropic Glu receptorsParallel fibersEPSC frequencyPresynaptic effectsExcitatory transmissionGlutamate releaseGlutamatergic transmissionPostsynaptic currentsGlu receptorsBrain slices
2002
GAT-1 and Reversible GABA Transport in Bergmann Glia in Slices
Barakat L, Bordey A. GAT-1 and Reversible GABA Transport in Bergmann Glia in Slices. Journal Of Neurophysiology 2002, 88: 1407-1419. PMID: 12205162, DOI: 10.1152/jn.2002.88.3.1407.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBiological TransportCarrier ProteinsCerebellumElectrophysiologyGABA Plasma Membrane Transport ProteinsGamma-Aminobutyric AcidIn Vitro TechniquesMembrane ProteinsMembrane Transport ProteinsNeurogliaOrganic Anion TransportersPatch-Clamp TechniquesRatsRats, Sprague-DawleyReceptors, GABA-AConceptsGAT-1Bergmann gliaInward currentsGABA transporterWhole-cell patch-clamp recordingsCell patch-clamp recordingsGlial GABA uptakePatch-clamp recordingsRat cerebellar slicesGABA perfusionReceptor blockersAmbient GABANNC-711Extracellular GABAGABA effluxGABA uptakeGABA receptorsCerebellar slicesGAT subtypesNipecotic acidReceptor activationGABABlockersGliaOutward currentsCarrier‐mediated uptake and release of taurine from Bergmann glia in rat cerebellar slices
Barakat L, Wang D, Bordey A. Carrier‐mediated uptake and release of taurine from Bergmann glia in rat cerebellar slices. The Journal Of Physiology 2002, 541: 753-767. PMID: 12068038, PMCID: PMC2290349, DOI: 10.1113/jphysiol.2001.015834.Peer-Reviewed Original ResearchConceptsRat cerebellar slicesBergmann gliaGuanidinoethyl sulphonateCerebellar slicesTaurine transporterInward currentsWhole-cell patch-clamp recordingsTaurine uptakeGABA receptor blockersTaurine transporter inhibitorRelease of taurinePatch-clamp recordingsDependent taurine transporterOrder of potencyTaurine perfusionReceptor blockersIntracellular taurineIschemic conditionsCarrier-mediated uptakeTaurine effluxOutward currentsTransporter currentsTransporter inhibitorsIntracellular perfusionGlia
2001
Electrophysiological Characteristics of Reactive Astrocytes in Experimental Cortical Dysplasia
Bordey A, Lyons SA, Hablitz JJ, Sontheimer H. Electrophysiological Characteristics of Reactive Astrocytes in Experimental Cortical Dysplasia. Journal Of Neurophysiology 2001, 85: 1719-1731. PMID: 11287494, DOI: 10.1152/jn.2001.85.4.1719.Peer-Reviewed Original ResearchConceptsGap junction couplingReactive gliosisFreeze lesionGlial fibrillary acidic protein immunoreactivityWhole-cell patch-clamp recordingsCell patch-clamp recordingsExperimental cortical dysplasiaCortical layers IPatch-clamp recordingsPostnatal day 16Reduced gap junction couplingNormal neuronal functionDysplastic neocortexP24 ratsDysplastic cortexReactive astrocytesCortical dysplasiaNeuronal dysfunctionProtein immunoreactivityElectrophysiological characteristicsAstrocytesChannel expressionNeuronal functionMicrosulcusLayer I
2000
Muscarinic Activation of BK Channels Induces Membrane Oscillations in Glioma Cells and Leads to Inhibition of Cell Migration
Bordey A, Sontheimer H, Trouslard J. Muscarinic Activation of BK Channels Induces Membrane Oscillations in Glioma Cells and Leads to Inhibition of Cell Migration. The Journal Of Membrane Biology 2000, 176: 31-40. PMID: 10882426, DOI: 10.1007/s00232001073.Peer-Reviewed Original ResearchConceptsPatch-clamp recordingsGlioma cellsAstrocytoma cellsCell migrationCultured human astrocytoma cellsIntracellular free calcium concentrationACh receptor agonistsFree calcium concentrationHuman astrocytoma cellsRelease of Ca2Glioma cell migrationMuscarinic activationMuscarinic antagonistCerebral tumorsMuscarinic receptorsReceptor agonistBath applicationActivate Ca2Intracellular injectionCerebrospinal fluidACh applicationAcetylcholineBiphasic increaseIntracellular storesExternal calciumIon channel expression by astrocytes in situ: Comparison of different CNS regions
Bordey A, Sontheimer H. Ion channel expression by astrocytes in situ: Comparison of different CNS regions. Glia 2000, 30: 27-38. PMID: 10696142, DOI: 10.1002/(sici)1098-1136(200003)30:1<27::aid-glia4>3.0.co;2-#.Peer-Reviewed Original ResearchConceptsBergmann glial cellsIon channel complementGlial cellsIon channel expressionDifferent CNS regionsCNS regionsChannel expressionPercentage of astrocytesTransient A-typeCerebellar Bergmann glial cellsChannel complementPatch-clamp recordingsVoltage-activated currentsPostnatal day 17Whole-cell currentsIon channelsVoltage-gated ion channelsBrain slicesRat astrocytesAstrocytesDay 17Low input resistanceInput resistanceCNSInitial recording
1998
Properties of human glial cells associated with epileptic seizure foci
Bordey A, Sontheimer H. Properties of human glial cells associated with epileptic seizure foci. Epilepsy Research 1998, 32: 286-303. PMID: 9761328, DOI: 10.1016/s0920-1211(98)00059-x.Peer-Reviewed Original ResearchConceptsSeizure focusGlial cellsMesio-temporal lobe epilepsyWhole-cell patch-clamp recordingsLucifer YellowControl rat hippocampusPathophysiology of seizuresSlow action potentialsCurrent-clamp studiesGFAP-positive astrocytesEpileptic seizure fociPatch-clamp recordingsHuman glial cellsLobe epilepsyAcute slicesRat hippocampusEpilepsy patientsClamp studiesRat astrocytesAstrocytesIntermediate filaments GFAPNormal astrocytesAction potentialsPhysiological propertiesBranched processesElectrophysiological Properties of Human Astrocytic Tumor Cells In Situ: Enigma of Spiking Glial Cells
Bordey A, Sontheimer H. Electrophysiological Properties of Human Astrocytic Tumor Cells In Situ: Enigma of Spiking Glial Cells. Journal Of Neurophysiology 1998, 79: 2782-2793. PMID: 9582244, DOI: 10.1152/jn.1998.79.5.2782.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAstrocytesAstrocytomaBrain NeoplasmsCarcinomaCell DifferentiationChildChoroid Plexus NeoplasmsDelayed Rectifier Potassium ChannelsHumansIon TransportNeoplasm ProteinsNeoplastic Stem CellsNerve Tissue ProteinsPatch-Clamp TechniquesPotassiumPotassium Channel BlockersPotassium ChannelsPotassium Channels, Inwardly RectifyingPotassium Channels, Voltage-GatedSodium Channel BlockersSodium ChannelsSpinal CordTetraethylammoniumTetrodotoxinConceptsAstrocytoma cellsTumor cellsGlial cellsWhole-cell patch-clamp recordingsCell patch-clamp recordingsAction potential-like responsesOlder pediatric patientsSpinal cord astrocytesHuman astrocytic tumor cellsSensitive sodium currentsGroup of tumorsLow-grade astrocytomasPatch-clamp recordingsOutward potassium currentGlial tumor cellsAstrocytic tumor cellsGeneration of spikesHigh input resistancePeritumoral astrocytesPediatric patientsMicroM Ba2Pilocytic astrocytomaPotassium currentAstrocytesElectrophysiological propertiesExpression of voltage-activated chloride currents in acute slices of human gliomas
Ullrich N, Bordey A, Gillespie GY, Sontheimer H. Expression of voltage-activated chloride currents in acute slices of human gliomas. Neuroscience 1998, 83: 1161-1173. PMID: 9502255, DOI: 10.1016/s0306-4522(97)00456-9.Peer-Reviewed Original ResearchConceptsAcute slicesChloride currentsGlioma cellsGrade tumorsGlial cellsPatient biopsiesWhole-cell patch-clamp recordingsChloride channelsHost glial cellsImplanted glioma cellsPathological tumor gradeLow-grade tumorsHigh-grade tumorsPatch-clamp recordingsSpecific Cl- channelsNormal glial cellsAstrocyte-like cellsShort-term cultureTumor gradePathological gradeSCID miceVoltage-activated sodiumIntracranial injectionPotassium currentExperimental tumors
1997
Postnatal Development of Ionic Currents in Rat Hippocampal Astrocytes In Situ
Bordey A, Sontheimer H. Postnatal Development of Ionic Currents in Rat Hippocampal Astrocytes In Situ. Journal Of Neurophysiology 1997, 78: 461-477. PMID: 9242294, DOI: 10.1152/jn.1997.78.1.461.Peer-Reviewed Original ResearchConceptsHippocampal astrocytesPostnatal developmentCurrent sensitiveGlial cellsWhole-cell patch-clamp recordingsCell patch-clamp recordingsVoltage-activated sodium currentsGlial fibrillary acidic proteinRat hippocampal slicesRat hippocampal astrocytesFibrillary acidic proteinPatch-clamp recordingsOutward potassium currentEarly postnatal developmentIon channel expressionPercentage of cellsSteady-state activationStrong inward rectificationStratum radiatumHippocampal slicesCA1 regionDevelopmental changesPotassium currentChannel expressionEmbryonic rats