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
2000
Nerve growth factor maintains potassium conductance after nerve injury in adult cutaneous afferent dorsal root ganglion neurons
Everill B, Kocsis J. Nerve growth factor maintains potassium conductance after nerve injury in adult cutaneous afferent dorsal root ganglion neurons. Neuroscience 2000, 100: 417-422. PMID: 11008179, PMCID: PMC2605351, DOI: 10.1016/s0306-4522(00)00263-3.Peer-Reviewed Original ResearchConceptsTransient A-currentNerve growth factorDorsal root ganglion neuronsK currentsNerve ligationGrowth factorA-currentGanglion neuronsSciatic nerveWhole-cell patch-clamp techniquePotassium conductanceDistal nerve segmentsAfferent cell bodiesMini-osmotic pumpsVoltage-dependent potassium conductancePatch-clamp techniqueTransient potassium currentAppropriate ion replacementNerve growth factor treatmentGrowth factor treatmentNerve injuryNerve crushNerve segmentsCutaneous afferentsControl neurons[Characteristic improvement of the function following Schwann cell transplantation for demyelinated spinal cord].
Imaizumi T, Lankford K, Kocsis J, Honmou O, Kohama I, Hashi K. [Characteristic improvement of the function following Schwann cell transplantation for demyelinated spinal cord]. No Shinkei Geka. Neurological Surgery 2000, 28: 705-11. PMID: 11002493.Peer-Reviewed Original ResearchConceptsCompound action potentialDorsal rootsSchwann cellsSC transplantationSC myelinationAdult ratsConduction velocityTransplantation of SCsNormal DCsDorsal root ganglion neuronsDorsal column axonsLower conduction velocityGanglion neuronsSpinal cordDemyelinated axonsHistological examinationTransplantationAction potentialsRemyelinationAxonsOligodendrocytesRatsMyelinationAnatomical differencesLow amplitudeExcitability changes of dorsal root axons following nerve injury: implications for injury-induced changes in axonal Na+ channels
Nonaka T, Honmou O, Sakai J, Hashi K, Kocsis J. Excitability changes of dorsal root axons following nerve injury: implications for injury-induced changes in axonal Na+ channels. Brain Research 2000, 859: 280-285. PMID: 10719075, DOI: 10.1016/s0006-8993(00)01979-x.Peer-Reviewed Original ResearchConceptsDorsal root axonsNerve injuryDorsal rootsAction potentialsCutaneous afferent axonsSciatic nerve ligationAfferent cell bodiesInjury-induced changesRat dorsal rootSucrose gap chamberTarget disconnectionNerve ligationExcitability changesSpinal cordAfferent axonsTrophic supportRoot ligationRefractory periodCell bodiesElectrophysiological recordingsAxonsInjuryDepolarizationLigationPrevious studiesSynaptic Reorganization in the Substantia Gelatinosa After Peripheral Nerve Neuroma Formation: Aberrant Innervation of Lamina II Neurons by Aβ Afferents
Kohama I, Ishikawa K, Kocsis J. Synaptic Reorganization in the Substantia Gelatinosa After Peripheral Nerve Neuroma Formation: Aberrant Innervation of Lamina II Neurons by Aβ Afferents. Journal Of Neuroscience 2000, 20: 1538-1549. PMID: 10662843, PMCID: PMC2605372, DOI: 10.1523/jneurosci.20-04-01538.2000.Peer-Reviewed Original ResearchConceptsLamina II neuronsSciatic nerve sectionLaminae IIINeuroma formationNerve sectionLamina IIDorsal hornNerve stimulationMonosynaptic EPSPsAbeta fibersControl slicesSpinal cord dorsal horn neuronsExtracellular field potential recordingsLow-threshold stimulationDorsal horn neuronsDorsal root axonsLow-threshold mechanoreceptorsSpinal cord slicesShort-latency responsesTransverse slice preparationHorseradish peroxidase labelingField potential recordingsLaminae IAberrant innervationSubstantia gelatinosa
1998
The delayed depolarization in rat cutaneous afferent axons is reduced following nerve transection and ligation, but not crush: Implications for injury‐induced axonal NA + channel reorganization
Sakai J, Honmou O, Kocsis J, Hashi K. The delayed depolarization in rat cutaneous afferent axons is reduced following nerve transection and ligation, but not crush: Implications for injury‐induced axonal NA + channel reorganization. Muscle & Nerve 1998, 21: 1040-1047. PMID: 9655122, DOI: 10.1002/(sici)1097-4598(199808)21:8<1040::aid-mus8>3.0.co;2-8.Peer-Reviewed Original ResearchConceptsCutaneous afferent axonsNerve injurySural nerveNerve transectionAfferent axonsAction potentialsCell bodiesCutaneous afferent neuronsPeripheral nerve injuryAfferent cell bodiesSucrose gap chamberRat sural nerveTarget disconnectionAfferent neuronsPeripheral targetsAxonal NaNerveRefractory periodAxonsTransectionCompound actionDepolarizationSimilar changesInjuryTarget connectionsResistance to anoxic injury in the dorsal columns of adult rat spinal cord following demyelination
Imaizumi T, Kocsis J, Waxman S. Resistance to anoxic injury in the dorsal columns of adult rat spinal cord following demyelination. Brain Research 1998, 779: 292-296. PMID: 9473700, DOI: 10.1016/s0006-8993(97)01171-2.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsDemyelinating DiseasesFemaleHypoxiaNeural ConductionRatsRats, WistarSpinal Cord DiseasesConceptsCompound action potentialDorsal columnsSpinal cordAction potentialsWhite matterSpinal cord dorsal columnAdult rat spinal cordAdult spinal cordRat spinal cordMin of reoxygenationAdult white matterAction potential conductionControl ratsFocal demyelinationAnoxic injurySupramaximal stimulationOnset of anoxiaAdult ratsDemyelinationPotential conductionCordX-irradiationRatsGreater recoveryOnset
1996
GABAA-receptor-mediated conductance and action potential waveform in cutaneous and muscle afferent neurons of the adult rat: differential expression and response to nerve injury
Oyelese A, Kocsis J. GABAA-receptor-mediated conductance and action potential waveform in cutaneous and muscle afferent neurons of the adult rat: differential expression and response to nerve injury. Journal Of Neurophysiology 1996, 76: 2383-2392. PMID: 8899611, PMCID: PMC2605353, DOI: 10.1152/jn.1996.76.4.2383.Peer-Reviewed Original ResearchConceptsGABAA receptor-mediated conductanceMuscle afferent neuronsCutaneous afferent neuronsAction potential waveformAfferent neuronsDorsal root gangliaCrush injuryAction potentialsL5 dorsal root gangliaWhole-cell patch-clamp recordingsCell patch-clamp recordingsInjury-induced plasticitySciatic nerve ligationPotential waveformDistal nerve stumpPatch-clamp recordingsGamma-aminobutyric acidPeak GABANerve ligationMuscle afferentsNerve injuryDRG neuronsInjured neuronsNerve stumpRoot ganglia
1994
Gabapentin increases GABA-induced depolarization in rat neonatal optic nerve
Kocsis J, Honmou O. Gabapentin increases GABA-induced depolarization in rat neonatal optic nerve. Neuroscience Letters 1994, 169: 181-184. PMID: 8047279, DOI: 10.1016/0304-3940(94)90386-7.Peer-Reviewed Original ResearchIntracellular calcium mobilization and neurite outgrowth in mammalian neurons
Kocsis J, Rand M, Lankford K, Waxman S. Intracellular calcium mobilization and neurite outgrowth in mammalian neurons. Developmental Neurobiology 1994, 25: 252-264. PMID: 8195789, DOI: 10.1002/neu.480250306.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsCaffeineCalciumCalcium ChannelsCell CompartmentationCell DifferentiationCells, CulturedFemaleGanglia, SpinalGene Expression RegulationImage Processing, Computer-AssistedIntracellular FluidIon Channel GatingLasersMicroscopy, FluorescenceModels, BiologicalNeuritesNeuronsRatsRats, WistarTerpenesThapsigarginConceptsDepolarization-induced Ca2Calcium-induced calcium releaseDRG neuronsIntracellular Ca2Cultured adult rat dorsal root ganglion neuronsAdult rat dorsal root ganglion neuronsRat dorsal root ganglion neuronsNeurite outgrowthDorsal root ganglion neuronsIntact intracellular Ca2Intracellular calcium mobilizationIndicator dye fluo-3Nuclear Ca2Dye Fluo-3Endoplasmic reticulum Ca2Ganglion neuronsCalcium mobilizationDependent kinase IICalcium releaseFluo-3NeuronsMammalian neuronsReticulum Ca2Elevated Ca2Elicit neurite outgrowth
1993
Increased spike‐frequency adaptation and tea sensitivity in dorsal root fibers after sciatic nerve injury
Utzschneider D, Bhisitkhul R, Kocsis J. Increased spike‐frequency adaptation and tea sensitivity in dorsal root fibers after sciatic nerve injury. Muscle & Nerve 1993, 16: 958-963. PMID: 8355727, DOI: 10.1002/mus.880160912.Peer-Reviewed Original ResearchConceptsCompound action potentialDorsal root axonsNerve injuryDorsal rootsPotassium channel blockerAction potentialsSciatic nerveChannel blockersSpike adaptationSciatic nerve injuryPeripheral nerve injurySucrose gap chamberBrief tetanic stimulationDorsal root fibersWhole nerve recordingsSpike frequency adaptationTransection groupBurst dischargesTetanic stimulationNerve recordingsControl groupInjuryRoot fibersBurst responseNerveThe 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
Transient presence and functional interaction of endogenous GABA and GABAA receptors in developing rat optic nerve
Sakatani K, Black J, Kocsis J. Transient presence and functional interaction of endogenous GABA and GABAA receptors in developing rat optic nerve. Proceedings Of The Royal Society B 1992, 247: 155-161. PMID: 1349183, DOI: 10.1098/rspb.1992.0022.Peer-Reviewed Original ResearchConceptsRat optic nerveOptic nerveCentral nervous systemGABAA receptorsIntact rat optic nerveCultured glia cellsFunctional GABAA receptorsGABAA receptor agonistNeonatal optic nerveNeuronal cell bodiesO-2A progenitor cellsNon-synaptic sitesPre-myelinated axonsWhite matter regionsSynthesis of GABAAxonal excitabilityReceptor agonistEndogenous GABAGABA uptakeGlia cellsSynaptic neurotransmittersNervous systemEndogenous neurotransmittersType 2Nerve
1991
Differential sensitivity to hypoxia of the peripheral versus central trajectory of primary afferent axons
Utzschneider D, Kocsis J, Waxman S. Differential sensitivity to hypoxia of the peripheral versus central trajectory of primary afferent axons. Brain Research 1991, 551: 136-141. PMID: 1913145, DOI: 10.1016/0006-8993(91)90924-k.Peer-Reviewed Original ResearchConceptsDorsal columnsDorsal rootsAfferent fibersCentral nervous system componentsPrimary afferent fibersSucrose gap chamberAction potential amplitudePrimary afferent axonsCompound action potentialDorsal spinal rootsNervous system componentsAxonal trunksPeripheral nervesSpinal cordSpinal rootsAfferent axonsCNS portionSchwann cellsAdult ratsPotential amplitudeAxon branchesAction potentialsHypoxiaMembrane potential changesMembrane depolarization
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 sitesCellsRecordingsIon channel organization of the myelinated fiber
Black J, Kocsis J, Waxman S. Ion channel organization of the myelinated fiber. Trends In Neurosciences 1990, 13: 48-54. PMID: 1690930, DOI: 10.1016/0166-2236(90)90068-l.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsNerve Fibers, MyelinatedNeural ConductionPotassium ChannelsSodium ChannelsElevated 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 slicesAfferentsDiminished dorsal root GABA sensitivity following chronic peripheral nerve injury
Kingery W, Fields R, Kocsis J. Diminished dorsal root GABA sensitivity following chronic peripheral nerve injury. Experimental Neurology 1988, 100: 478-490. PMID: 3366201, DOI: 10.1016/0014-4886(88)90033-7.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidPrimary afferent depolarizationDorsal rootsGABA sensitivityNerve lesionsSciatic nerveDorsal root compound action potentialsChronic peripheral nerve injurySciatic crush injurySciatic nerve lesionChronic pain syndromeLumbar dorsal rootsPeripheral nerve injuryPeripheral nerve lesionsPeripheral nerve transectionSucrose gap chamberCompound action potentialDorsal root fibersRat lumbar dorsal rootsDorsal root axotomyPain syndromeNerve injuryCrush injuryNerve transectionSciatic axotomy
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 activation