2001
Transplantation of Cryopreserved Adult Human Schwann Cells Enhances Axonal Conduction in Demyelinated Spinal Cord
Kohama I, Lankford K, Preiningerova J, White F, Vollmer T, Kocsis J. Transplantation of Cryopreserved Adult Human Schwann Cells Enhances Axonal Conduction in Demyelinated Spinal Cord. Journal Of Neuroscience 2001, 21: 944-950. PMID: 11157080, PMCID: PMC2605383, DOI: 10.1523/jneurosci.21-03-00944.2001.Peer-Reviewed Original ResearchConceptsHuman Schwann cellsSchwann cellsDorsal columnsSural nerveAxonal conductionIntra-axonal recording techniquesDorsal column lesionLegs of patientsDemyelinated spinal cordHuman sural nerveAdult human Schwann cellsFunctional remyelinationExtensive remyelinationCell-based therapiesMultiple sclerosisVascular diseaseSpinal cordWistar ratsConduction blockAdult CNSConduction velocityLesion zoneAction potentialsMonoclonal antibodiesLesions
1998
Vigabatrin enhances promoted release of GABA in neonatal rat optic nerve
Yee J, Agulian S, Kocsis J. Vigabatrin enhances promoted release of GABA in neonatal rat optic nerve. Epilepsy Research 1998, 29: 195-200. PMID: 9551781, DOI: 10.1016/s0920-1211(97)00086-7.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornAnticonvulsantsAstrocytesAxonsBicucullineCarrier ProteinsGABA Plasma Membrane Transport ProteinsGamma-Aminobutyric AcidIn Vitro TechniquesMembrane PotentialsMembrane ProteinsMembrane Transport ProteinsModels, NeurologicalNipecotic AcidsOptic NerveOrganic Anion TransportersPotassium ChlorideProlineRatsRats, WistarReceptors, GABA-ATime FactorsVigabatrinConceptsRelease of GABAGABA levelsNipecotic acidNeonatal rat optic nerveGABA transporter inhibitorOptic nerve axonsRat optic nerveOptic nerve astrocytesEnzyme GABA transaminaseGABA transaminase activityFree GABA levelsOptic nerveAntiepileptic drugsNO-711GABA transporterNerve axonsTransaminase activityGABA transaminaseVigabatrinTransporter inhibitorsGABADepolarizationGreater releaseElevationRelease
1995
The anticonvulsant gabapentin enhances promoted release of GABA in hippocampus: a field potential analysis
Honmou O, Oyelese A, Kocsis J. The anticonvulsant gabapentin enhances promoted release of GABA in hippocampus: a field potential analysis. Brain Research 1995, 692: 273-277. PMID: 8548315, DOI: 10.1016/0006-8993(95)00634-3.Peer-Reviewed Original ResearchConceptsExcitatory postsynaptic potentialsFree GABA levelsField potential analysisNipecotic acidGABA levelsPopulation excitatory postsynaptic potentialEffects of microapplicationRelease of GABAGABAA receptor activationAdult rat brainMechanism of actionGABA releasePartial seizuresAnticonvulsant gabapentinPresynaptic volleyPostsynaptic potentialsBath applicationHippocampal slicesRat brainGBP treatmentHippocampal cellsBlock uptakeGabapentinReceptor activationGABAGabapentin potentiates the conductance increase induced by nipecotic acid in CA1 pyramidal neurons in vitro
Honmou O, Kocsis J, Richerson G. Gabapentin potentiates the conductance increase induced by nipecotic acid in CA1 pyramidal neurons in vitro. Epilepsy Research 1995, 20: 193-202. PMID: 7796791, DOI: 10.1016/0920-1211(94)00076-9.Peer-Reviewed Original ResearchConceptsRelease of GABACA1 pyramidal neuronsNipecotic acidPyramidal neuronsGABAA receptorsWhole-cell patch-clamp recordingsGABA uptake systemRat optic nerveCalcium-free solutionPeriod of hyperexcitabilityPatch-clamp recordingsChloride equilibrium potentialMechanism of actionGabapentin exposurePartial seizuresPressure microejectionOptic nerveAnticonvulsant gabapentinNonvesicular releaseHippocampal slicesNeuronal inhibitionMetabolic effectsSynaptic transmissionWhole-cell conductanceClamp recordings
1993
The attenuation of GABA sensitivity in the maturing myelin-deficient rat optic nerve
Lim J, Utzschneider D, Sakatani K, Kocsis J. The attenuation of GABA sensitivity in the maturing myelin-deficient rat optic nerve. Brain Research 1993, 72: 15-20. PMID: 8384095, DOI: 10.1016/0165-3806(93)90155-4.Peer-Reviewed Original ResearchConceptsOptic nerveRat optic nerveEffect of GABAMD ratsNipecotic acidGABA sensitivityGABA uptake inhibitor nipecotic acidNormal optic nervesGABAA receptor agonistOptic nerve axonsEarly postnatal periodCentral nervous system axonsThird postnatal weekSucrose gap techniqueResult of myelinationLarger GABAAxonal excitabilityControl ratsGABAA receptorsEndogenous releasePostnatal periodPostnatal weekNerve sensitivityNerveGABA
1992
Mutual excitation among dorsal root ganglion neurons in the rat
Utzschneider D, Kocsis J, Devor M. Mutual excitation among dorsal root ganglion neurons in the rat. Neuroscience Letters 1992, 146: 53-56. PMID: 1475049, DOI: 10.1016/0304-3940(92)90170-c.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsGanglia, SpinalIn Vitro TechniquesKineticsMembrane PotentialsMicroelectrodesMyelin SheathNeuronsPotassiumRatsRats, WistarConceptsDorsal root gangliaDorsal rootsDorsal root ganglion neuronsPrimary sensory neuronsExcised dorsal root gangliaNerve injuryDRG neuronsGanglion neuronsMost neuronsRoot gangliaSensory abnormalitiesIntracellular recordingsDR stimulationRepetitive stimulationSensory neuronsTransient riseNeighboring neuronsNeuronsStimulationSimilar kineticsMutual excitationGangliaInjuryRatsAbnormalitiesIntranuclear Ca2+ transients during neurite regeneration of an adult mammalian neuron.
Birch B, Eng D, Kocsis J. Intranuclear Ca2+ transients during neurite regeneration of an adult mammalian neuron. Proceedings Of The National Academy Of Sciences Of The United States Of America 1992, 89: 7978-7982. PMID: 1518824, PMCID: PMC49838, DOI: 10.1073/pnas.89.17.7978.Peer-Reviewed Original ResearchConceptsNeurite extensionNuclear eventsMammalian dorsal root ganglion neuronsSubcellular calcium transientsIntranuclear Ca2Confocal laser scanning microscopyGene expressionMammalian neuronsAdult mammalian neuronsCytoplasmic levelsLaser scanning microscopyNuclear Ca2Importance of Ca2Activity-dependent modulationScanning microscopyNeurite regenerationDepolarization-induced increaseCa2Transmembrane Ca2Dorsal root ganglion neuronsRegenerationExtracellular Ca2CytoplasmNucleusNeurons
1990
Dendritic action potentials activated by NMDA receptor-mediated EPSPs in CA1 hippocampal pyramidal cells
Poolos N, Kocsis J. Dendritic action potentials activated by NMDA receptor-mediated EPSPs in CA1 hippocampal pyramidal cells. Brain Research 1990, 524: 342-346. PMID: 1981329, DOI: 10.1016/0006-8993(90)90714-m.Peer-Reviewed Original ResearchConceptsExcitatory postsynaptic potentialsCA1 hippocampal pyramidal cellsDendritic action potentialsHippocampal pyramidal cellsPyramidal cellsRat CA1 hippocampal pyramidal cellsNMDA receptor-mediated excitatory postsynaptic potentialsAction potentialsDendritic excitatory postsynaptic potentialsN-methyl-D-aspartate receptorsPyramidal cell bodiesShort-term potentiationIntradendritic recordingsPostsynaptic potentialsSynaptic responsesDendritic arborsDendritic conductancesRepetitive stimulationDendritic spikesSomatic recordingsCell bodiesSubthreshold responsesMultiple sitesCellsRecordingsElevated extracellular potassium concentration enhances synaptic activation of N-methyl-d-aspartate receptors in hippocampus
Poolos N, Kocsis J. Elevated extracellular potassium concentration enhances synaptic activation of N-methyl-d-aspartate receptors in hippocampus. Brain Research 1990, 508: 7-12. PMID: 2159824, DOI: 10.1016/0006-8993(90)91110-3.Peer-Reviewed Original ResearchConceptsNMDA receptor activationNMDA receptorsReceptor activationNMDA receptor-mediated componentN-methyl-D-aspartate receptorsElevated extracellular potassium concentrationReceptor-mediated componentReceptor-mediated conductanceChannel blocker tetraethylammoniumCentral nervous systemExtracellular potassium concentrationExtracellular potassium ion concentrationSlowed repolarizationOrthodromic stimulationPotassium equilibrium potentialCA1 regionPyramidal cellsRat hippocampusSynaptic activationBlocker tetraethylammoniumPostsynaptic activityRepetitive stimulationNeuronal activityNervous systemReceptors
1988
Presynaptic actions of carbachol and adenosine on corticostriatal synaptic transmission studied in vitro
Malenka R, Kocsis J. Presynaptic actions of carbachol and adenosine on corticostriatal synaptic transmission studied in vitro. Journal Of Neuroscience 1988, 8: 3750-3756. PMID: 2848109, PMCID: PMC6569613, DOI: 10.1523/jneurosci.08-10-03750.1988.Peer-Reviewed Original ResearchConceptsStriatal neuronsSynaptic transmissionCorticostriatal synaptic transmissionExcitatory amino acidsField potentialsNeostriatal slice preparationField potential responsesCorticostriatal afferentsCorticostriatal responsesCorticostriatal fibersPresynaptic actionPostsynaptic actionsStriatal neurotransmittersCalcium antagonistsCarbachol actionCortical afferentsAfferent fibersIntrinsic neuronsStriatal afferentsPutative neurotransmittersAdenosine actionSlice preparationCorpus callosumNeostriatal slicesAfferentsBuspirone, 8-OH-DPAT and ipsapirone: effects on hippocampal cerebellar and sciatic fiber excitability
Hiner B, Mauk M, Peroutka S, Kocsis J. Buspirone, 8-OH-DPAT and ipsapirone: effects on hippocampal cerebellar and sciatic fiber excitability. Brain Research 1988, 461: 1-9. PMID: 2906267, DOI: 10.1016/0006-8993(88)90719-6.Peer-Reviewed Original ResearchConceptsCerebellar parallel fibersSerotonergic mechanismsNerve excitabilityFiber excitabilityAction potentialsSucrose gap recordingsEffects of serotoninNovel anxiolytic buspironeCompound action potentialDose-dependent reductionSchaffer collateral fibersParallel fibersAfferent fibersSciatic nerveReversible decrementsCollateral fibersAnxiolytic buspironeConduction velocityDPATIpsapironeGap recordingsBuspironeCerebellar neuronsAxonal responseExcitabilityBuspirone attenuates synaptic activation of hippocampal pyramidal cells
Mauk, Peroutka S, Kocsis J. Buspirone attenuates synaptic activation of hippocampal pyramidal cells. Journal Of Neuroscience 1988, 8: 1-11. PMID: 3339401, PMCID: PMC6569355, DOI: 10.1523/jneurosci.08-01-00001.1988.Peer-Reviewed Original ResearchConceptsExcitatory postsynaptic potentialsPyramidal cellsStratum radiatumSynaptic activationAfferent fibersHippocampal CA1 pyramidal cellsInput resistanceStimulation of afferentsEffects of buspironeCA1 pyramidal cellsHippocampal pyramidal cellsPostsynaptic potentialsPresynaptic fibersConduction slowingFiber excitabilitySpike activityAnxiolytic agentsBuspironeRefractory periodRadiatumRapid hyperpolarizationReceptor sitesMeasurable effectExcitabilityMembrane potential
1987
Activity-evoked increases in extracellular potassium modulate presynaptic excitability in the CA1 region of the hippocampus
Poolos N, Mauk M, Kocsis J. Activity-evoked increases in extracellular potassium modulate presynaptic excitability in the CA1 region of the hippocampus. Journal Of Neurophysiology 1987, 58: 404-416. PMID: 3655875, DOI: 10.1152/jn.1987.58.2.404.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsElectric StimulationFemaleHippocampusIn Vitro TechniquesPotassiumRatsRats, Inbred StrainsReaction TimeConceptsEnd of stimulationConduction velocityRepetitive stimulationCA1 afferentsStratum radiatumCA1 regionPostsynaptic elementsPostsynaptic activityBiphasic changeRat hippocampal slice preparationCompound action potentialHippocampal slice preparationCharacteristic field potentialHigher stimulation frequenciesPostsynaptic modulationPresynaptic volleyKynurenic acidPyramidal cellsSlice preparationPresynaptic axonsPresynaptic excitabilitySynaptic transmissionConduction blockIon-sensitive microelectrodesPostsynaptic activationModulation of neuronal activity in the hippocampus by 5-hydroxytryptamine and 5-hydroxytryptamine1a selective drugs
Peroutka S, Mauk M, Kocsis J. Modulation of neuronal activity in the hippocampus by 5-hydroxytryptamine and 5-hydroxytryptamine1a selective drugs. Neuropharmacology 1987, 26: 139-146. PMID: 2884586, DOI: 10.1016/0028-3908(87)90201-2.Peer-Reviewed Original ResearchConceptsTVX Q 7821Hippocampal slice preparationSlice preparationDose-dependent mannerMicromolar concentrationsApplication of drugsPopulation spikesRadioligand techniquesOH-DPATSchaffer collateralsHippocampal membranesNeuronal activityPyramidal layerKetanserinBaseline levelsBuspironeInitial increaseDPATSelective drugsDrugsField potentialsPhysiological effectsPopulationSimilar affinityBenzisothiazol-3
1985
Aminopyridine-sensitivity of spinal cord white matter studied in vitro
Kocsis J. Aminopyridine-sensitivity of spinal cord white matter studied in vitro. Experimental Brain Research 1985, 57: 620-624. PMID: 2984039, DOI: 10.1007/bf00237849.Peer-Reviewed Original ResearchMeSH Keywords4-AminopyridineAction PotentialsAminopyridinesAnimalsIn Vitro TechniquesRatsRats, Inbred StrainsSpinal CordConceptsCentral nervous system extensionSpinal cord white matterAction potential dischargeDorsal column axonsSucrose gap chamberCompound action potentialPeripheral nervous systemCord white matterVentral root fibersAction potential characteristicsSensory fibersDorsal columnsDorsal rootsSpinal cordNervous systemWhite matterAction potentialsPotential dischargeRoot fibersPotassium channelsCourse of maturationOcclusion experimentsAxonsPronounced increaseCord