2001
[The role of transplanted astrocytes for the regeneration of CNS axons].
Imaizumi T, Lankford K, Kocsis J, Hashi K. [The role of transplanted astrocytes for the regeneration of CNS axons]. Brain And Nerve 脳と神経 2001, 53: 632-8. PMID: 11517487.Peer-Reviewed Original ResearchConceptsCompound action potentialRegenerated axonsSC transplantationAxonal regenerationAdult ratsLong-tract axonsMyelin associated proteinsDorsal column axonsRegeneration of axonsDC axonsCell transplantationDorsal rootsNeonatal ratsSpinal cordReduction of scarsHistological examinationTransplantationMammalian CNSCNS axonsAction potentialsAxonsMyelin formationLesionsThree daysRatsTransplantation 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
[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 studies
1998
Transplanted Olfactory Ensheathing Cells Remyelinate and Enhance Axonal Conduction in the Demyelinated Dorsal Columns of the Rat Spinal Cord
Imaizumi T, Lankford K, Waxman S, Greer C, Kocsis J. Transplanted Olfactory Ensheathing Cells Remyelinate and Enhance Axonal Conduction in the Demyelinated Dorsal Columns of the Rat Spinal Cord. Journal Of Neuroscience 1998, 18: 6176-6185. PMID: 9698311, PMCID: PMC2605360, DOI: 10.1523/jneurosci.18-16-06176.1998.Peer-Reviewed Original ResearchConceptsDorsal column axonsRat spinal cordSpinal cordRemyelinated axonsDorsal columnsAdult rat spinal cordExtent of remyelinationTransplantation of OECsSpinal cord lesionsCell injection siteQuantitative histological analysisFunctional remyelinationCord lesionsAxonal conductionNeonatal ratsFocal injectionsConduction blockSchwann cellsConduction velocityInjection siteElectrophysiological propertiesAction potentialsAxonsHistological analysisTransplantationThe 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 ResearchConceptsCompound 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
1997
Differential Effects of NGF and BDNF on Axotomy-Induced Changes in GABAA-Receptor-Mediated Conductance and Sodium Currents in Cutaneous Afferent Neurons
Oyelese A, Rizzo M, Waxman S, Kocsis J. Differential Effects of NGF and BDNF on Axotomy-Induced Changes in GABAA-Receptor-Mediated Conductance and Sodium Currents in Cutaneous Afferent Neurons. Journal Of Neurophysiology 1997, 78: 31-42. PMID: 9242258, PMCID: PMC2605357, DOI: 10.1152/jn.1997.78.1.31.Peer-Reviewed Original ResearchConceptsBrain-derived neurotrophic factorCutaneous afferent neuronsNerve growth factorReceptor-mediated conductanceProportion of neuronsAfferent neuronsAction potential waveformSodium currentNeurotrophic factorL4/L5 DRG neuronsAction potentialsVoltage-dependent sodium currentsWhole-cell patch-clamp techniqueDorsal root ganglion neuronsCell patch-clamp techniqueAxotomy-induced increaseFluoro-Gold injectionsL5 DRG neuronsSpecific neurotrophic factorsSciatic nerve stumpsTTX-sensitive currentsInjury-induced changesResistant sodium currentsGamma-aminobutyric acidPatch-clamp techniqueFunctional Repair of Myelinated Fibers in the Spinal Cord by Transplantation of Glial Cells
Waxman S, Kocsis J. Functional Repair of Myelinated Fibers in the Spinal Cord by Transplantation of Glial Cells. Altschul Symposia Series 1997, 283-298. DOI: 10.1007/978-1-4615-5949-8_28.Peer-Reviewed Original ResearchConduction velocityMyelinated axonsMyelin sheathNon-myelinated fibresClinical deficitsMyelin damageConduction abnormalitiesDemyelinated axonsSpinal cordGlial cellsMyelinated fibersConduction blockSynaptic terminalsAction potentialsRefractory periodCell bodiesDemyelinated fibersAxonsFunctional repair
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
1995
Action in the Dendrites: A Revisitation of Dendritic Action Potentials
Kocsis J. Action in the Dendrites: A Revisitation of Dendritic Action Potentials. The Neuroscientist 1995, 1: 312-316. DOI: 10.1177/107385849500100602.Peer-Reviewed Original ResearchDendritic action potentialsSynaptic inputsAction potentialsCell bodiesPassive electrotonic spreadSimultaneous patch-clamp recordingsInitial axon segmentPatch-clamp recordingsRat hippocampal neuronsDendritic electrogenesisHippocampal neuronsDendritic spinesClamp recordingsElectrophysiological studiesPrimary siteAxon segmentsNeuronsNerve impulsesMembrane potential changesElectrotonic spreadUp-DateDendritesExcitatorySynapticSpineEnhancement of GABAA receptor-mediated conductances induced by nerve injury in a subclass of sensory neurons
Oyelese A, Eng D, Richerson G, Kocsis J. Enhancement of GABAA receptor-mediated conductances induced by nerve injury in a subclass of sensory neurons. Journal Of Neurophysiology 1995, 74: 673-683. PMID: 7472373, PMCID: PMC2605359, DOI: 10.1152/jn.1995.74.2.673.Peer-Reviewed Original ResearchConceptsDRG neuronsAction potential durationMedium neuronsNerve injurySmall neuronsLarge neuronsAction potentialsGABA conductanceNerve ligationControl neuronsPotential durationAdult rat dorsal root ganglion neuronsGABAA receptor-mediated conductanceRat dorsal root ganglion neuronsWhole-cell patch-clamp recordingsCell patch-clamp recordingsDorsal root ganglion neuronsMean action potential durationShort-duration action potentialsControl DRG neuronsSciatic nerve ligationEffects of axotomyReceptor-mediated conductanceTraumatic nerve injuryPatch-clamp recordings
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 responseNerve
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 sitesCellsRecordings
1989
Pharmacological sensitivities of two afterhyperpolarizations in rat optic nerve
Gordon T, Kocsis J, Waxman S. Pharmacological sensitivities of two afterhyperpolarizations in rat optic nerve. Brain Research 1989, 502: 252-257. PMID: 2555026, DOI: 10.1016/0006-8993(89)90620-3.Peer-Reviewed Original ResearchConceptsRat optic nerveOptic nerveEarly afterhyperpolarizationPharmacological sensitivityAction potentialsPeak latencyAction potential broadeningConstant current depolarizationSucrose gap chamberPotassium channel blockerLate afterhyperpolarizationChannel blockersRepetitive stimulationAfterhyperpolarizationNervePotassium conductanceSucrose gapTetraethylammoniumPotential broadeningCurrent depolarizationDepolarizationDurationApaminBlockersCharybdotoxin
1988
Buspirone, 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 responseExcitability
1987
Physiological effects of 4‐aminopyridine on demyelinated mammalian motor and sensory fibers
Bowe C, Kocsis J, Targ E, Waxman S. Physiological effects of 4‐aminopyridine on demyelinated mammalian motor and sensory fibers. Annals Of Neurology 1987, 22: 264-268. PMID: 2821876, DOI: 10.1002/ana.410220212.Peer-Reviewed Original ResearchConceptsSensory fibersClinical trialsAction potentialsPotassium channel blockadeDorsal root axonsCompound action potentialDorsal spinal rootsSingle action potentialMammalian motorIntrathecal injectionMultiple sclerosisSensory dysfunctionVentral rootsSpinal rootsNeuromuscular disordersSpecific fiber typesElectrophysiological responsesSingle stimulusPhysiological effectsTrialsFiber typesResponseParesthesiaSclerosisDysfunctionPhysiological properties of regenerated rat sciatic nerve following lesions at different postnatal ages
Bowe C, Kocsis J, Waxman S, Hildebrand C. Physiological properties of regenerated rat sciatic nerve following lesions at different postnatal ages. Brain Research 1987, 34: 123-131. DOI: 10.1016/0165-3806(87)90201-x.Peer-Reviewed Original ResearchControl nervesPostnatal ageSciatic nerveRegenerated nervesRegenerated rat sciatic nerveFrequency-following abilityOlder postnatal ageSciatic crush lesionRegenerated sciatic nerveAge 3 weeksCompound action potentialDifferent postnatal agesRat sciatic nerveWhole-nerve responseMonths of ageRelative refractory periodCrush lesionPharmacological blockadeNerve responsesSlight prolongationNerveElectrophysiological propertiesAction potentialsRefractory periodOlder age
1986
Action potential characteristics of demyelinated rat sciatic nerve following application of 4-aminopyridine
Targ E, Kocsis J. Action potential characteristics of demyelinated rat sciatic nerve following application of 4-aminopyridine. Brain Research 1986, 363: 1-9. PMID: 3004637, DOI: 10.1016/0006-8993(86)90652-9.Peer-Reviewed Original ResearchConceptsAction potentialsSciatic nerveFrequency-following abilityMultiple spike dischargesSite of demyelinationCompound action potentialPotassium channel blockerRat sciatic nerveAction potential characteristicsVariety of abnormalitiesAbsolute refractory periodExcitability changesPharmacological blockadeSpontaneous firingDemyelinated axonsChannel blockersConduction slowingConduction blockSpike dischargesLesion siteRefractory periodExcitability propertiesClinical useAxonsPotassium channels