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 releaseElevationReleaseA summary of mechanistic hypotheses of gabapentin pharmacology
Taylor C, Gee N, Su T, Kocsis J, Welty D, Brown J, Dooley D, Boden P, Singh L. A summary of mechanistic hypotheses of gabapentin pharmacology. Epilepsy Research 1998, 29: 233-249. PMID: 9551785, DOI: 10.1016/s0920-1211(97)00084-3.Peer-Reviewed Original ResearchConceptsAmyotrophic lateral sclerosisNon-vesicular GABA releaseCellular mechanismsVoltage-sensitive Ca2Specific amino acid transportersGabapentin bindsGABA releaseNeuronal deathElectrophysiology resultsAnticonvulsant drugsLateral sclerosisNeuroprotective activityNeurobehavioral actionsPharmacological actionsGabapentinAnimal modelsHuman whole bloodBrain tissueMonoamine neurotransmittersAmino acid transportersWhole bloodAcid transportersAuxiliary subunitsPharmacologyRate of synthesis
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 activationGABAEnhancement 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 ResearchMeSH KeywordsAnimalsAxonsGamma-Aminobutyric AcidGanglia, SensoryGanglia, SpinalIon ChannelsMembrane PotentialsNerve FibersRatsRats, WistarReceptors, GABA-ASciatic NerveTime FactorsConceptsDRG 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 recordingsGabapentin 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
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 Research
1993
Transient presence of GABA in astrocytes of the developing optic nerve
Ochi S, Lim J, Rand M, During M, Sakatani K, Kocsis J. Transient presence of GABA in astrocytes of the developing optic nerve. Glia 1993, 9: 188-198. PMID: 8294149, DOI: 10.1002/glia.440090304.Peer-Reviewed Original ResearchConceptsWhole optic nerveOptic nerveHigh-pressure liquid chromatographyGABA immunoreactivityPostnatal developmentEnzyme glutamic acid decarboxylaseIntact optic nerveRat optic nerveNeonatal optic nerveGlutamic acid decarboxylaseAstrocyte cell bodiesPostnatal day 20GABA immunostainingGFAP stainingPostnatal weekGABA stainingNerveCultured astrocytesAstrocytesDay 20GABAAcid decarboxylaseCell bodiesDevelopmental time courseImmunoreactivityThe 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
Conduction properties of spinal cord axons in the myelin-deficient rat mutant
Utzschneider D, Black J, Kocsis J. Conduction properties of spinal cord axons in the myelin-deficient rat mutant. Neuroscience 1992, 49: 221-228. PMID: 1407548, DOI: 10.1016/0306-4522(92)90090-o.Peer-Reviewed Original ResearchConceptsDorsal column axonsMyelin-deficient rat mutantsSpinal cordFrequency-dependent conduction blockNormal age-matched ratsBrain slice chamberMyelin-deficient rat spinal cordAction potential dischargeRat mutantAge-matched ratsRat spinal cordSpinal cord axonsAction potential conductionControl ratsDemyelinated axonsConduction blockConduction velocityRefractory periodPotential dischargeControl axonsSlice chamberPharmacological resultsPotential conductionAxonsCompensatory mechanismsTransient 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
1990
Trophic influence of the distal nerve segment on GABAA receptor expression in axotomized adult sensory neurons
Bhisitkul R, Kocsis J, Gordon T, Waxman S. Trophic influence of the distal nerve segment on GABAA receptor expression in axotomized adult sensory neurons. Experimental Neurology 1990, 109: 273-278. PMID: 2170161, DOI: 10.1016/s0014-4886(05)80017-2.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsDenervationFemaleGamma-Aminobutyric AcidGanglia, SpinalLigationMuscimolNerve CrushNeurons, AfferentRatsRats, Inbred StrainsReceptors, GABA-ASciatic NerveConceptsDistal nerve segmentsGamma-aminobutyric acidNerve segmentsSciatic nerveReceptor expressionSensory neuronsTrophic supportGABAA receptor agonist muscimolDorsal root ganglion neuronsAxotomized sensory neuronsReactive Schwann cellsGABAA receptor expressionAdult sensory neuronsReceptor agonist muscimolExpression of receptorsPeripheral target tissuesGABA receptor expressionDorsal root fibersGABA receptor sensitivityEnd organ innervationPostoperative dayNerve crushNerve transectionCrush siteDistal stump
1988
Diminished 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 ResearchMeSH KeywordsAction PotentialsAnimalsAxonsDenervationElectric StimulationGamma-Aminobutyric AcidNerve CrushPeripheral NervesSpinal Nerve RootsTime FactorsConceptsGamma-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
Axonal GABA receptors are selectively present on normal and regenerated sensory fibers in rat peripheral nerve
Bhisitkul R, Villa J, Kocsis J. Axonal GABA receptors are selectively present on normal and regenerated sensory fibers in rat peripheral nerve. Experimental Brain Research 1987, 66: 659-663. PMID: 3038587, DOI: 10.1007/bf00270698.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidVentral root fibersGABA receptorsRoot fibersSensory fibersPeripheral nervesSensory axonsRegenerated sensory axonsSucrose gap chamberPeripheral nerve fibersRat peripheral nerveDorsal root fibersMammalian peripheral nervesAgonist baclofenNerve crushDorsal rootsAgonist muscimolSciatic nerveNerve fibersRat peripheral nerve fibersNerveReceptorsMuscimolSelective presenceAxons
1984
Adenosine selectively blocks parallel-fiber-mediated synaptic potentials in rat cerebellar cortex.
Kocsis J, Eng D, Bhisitkul R. Adenosine selectively blocks parallel-fiber-mediated synaptic potentials in rat cerebellar cortex. Proceedings Of The National Academy Of Sciences Of The United States Of America 1984, 81: 6531-6534. PMID: 6093104, PMCID: PMC391958, DOI: 10.1073/pnas.81.20.6531.Peer-Reviewed Original ResearchMeSH KeywordsAdenosineAnimalsCerebellar CortexGamma-Aminobutyric AcidMembrane PotentialsRatsRats, Inbred StrainsReceptors, Cell SurfaceReceptors, PurinergicSynapsesConceptsGamma-aminobutyric acidSynaptic activityCerebellar cortexAction of adenosineEfficacy of adenosineRat cerebellar cortexClimbing fiber inputParallel fibersAdenosine applicationSynaptic potentialsSynaptic transmissionFiber activityPurkinje cellsAxon excitabilityElectrophysiological techniquesExcitability propertiesDendritic membraneCortexAdenosineConvergent parallelSelective blockingDirect alterationExcitability
1982
Effects of GABA on stimulus-evoked changes in [K+]o and parallel fiber excitability.
Malenka R, Kocsis J. Effects of GABA on stimulus-evoked changes in [K+]o and parallel fiber excitability. Journal Of Neurophysiology 1982, 48: 608-621. PMID: 6290614, DOI: 10.1152/jn.1982.48.3.608.Peer-Reviewed Original ResearchIntra-axonal recordings in rat dorsal column axons: membrane hyperpolarization and decreased excitability precede the primary afferent depolarization
Kocsis J, Waxman S. Intra-axonal recordings in rat dorsal column axons: membrane hyperpolarization and decreased excitability precede the primary afferent depolarization. Brain Research 1982, 238: 222-227. PMID: 6282392, DOI: 10.1016/0006-8993(82)90787-9.Peer-Reviewed Original ResearchMeSH KeywordsAfferent PathwaysAnimalsAxonsElectric StimulationGamma-Aminobutyric AcidGanglia, SpinalMaleMembrane PotentialsRatsRats, Inbred StrainsSpinal CordSynaptic TransmissionConceptsPrimary afferent depolarizationIntra-axonal recordingsRat lumbosacral spinal cordDorsal column stimulationDorsal root potentialsLumbosacral spinal cordDorsal column axonsDorsal columnsDorsal rootsAxonal depolarizationRoot potentialsSpinal cordGABA responsesNeuronal elementsIntracellular correlatesProlonged depolarizationMembrane hyperpolarizationHyperpolarizationDepolarizationExcitability