2007
Multiple sodium channels and their roles in electrogenesis within dorsal root ganglion neurons
Rush AM, Cummins TR, Waxman SG. Multiple sodium channels and their roles in electrogenesis within dorsal root ganglion neurons. The Journal Of Physiology 2007, 579: 1-14. PMID: 17158175, PMCID: PMC2075388, DOI: 10.1113/jphysiol.2006.121483.Peer-Reviewed Original ResearchConceptsSodium channel isoformsDorsal root ganglion neuronsChannel isoformsDRG neuronsGanglion neuronsSpecific sodium channel isoformsMultiple sodium channelsSodium channelsPattern of expressionModulatory moleculesDisease insultsModulation of channelsPlasticity of expressionNeuronsDifferent subclassesExcitabilityDistinct biophysical characteristicsIsoformsExpressionBody of literatureInsultImportant roleResponse
2002
Axotomy does not up-regulate expression of sodium channel Nav1.8 in Purkinje cells
Black J, Dusart I, Sotelo C, Waxman S. Axotomy does not up-regulate expression of sodium channel Nav1.8 in Purkinje cells. Brain Research 2002, 101: 126-131. PMID: 12007840, DOI: 10.1016/s0169-328x(02)00200-0.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsAxotomyCerebellumDisease Models, AnimalFemaleGanglia, SpinalGene Expression RegulationImmunohistochemistryMultiple SclerosisNAV1.8 Voltage-Gated Sodium ChannelNeurons, AfferentNeuropeptidesPurkinje CellsRatsRats, WistarRNA, MessengerSodium ChannelsUp-RegulationZebrafish ProteinsConceptsMultiple sclerosisPurkinje cellsSensory neuron-specific sodium channelsDorsal root ganglion neuronsAberrant expressionSodium channelsHuman multiple sclerosisPrimary sensory neuronsSodium channel Nav1.8Specific sodium channelsCerebellar Purkinje cellsGanglion neuronsSensory neuronsAxotomySurgical modelSodium channel transcriptsExperimental modelCerebellar functionChannel transcriptsNeuronsSitu hybridizationCellsExpressionNav1.8SclerosisNitric Oxide Blocks Fast, Slow, and Persistent Na+ Channels in C-Type DRG Neurons by S-Nitrosylation
Renganathan M, Cummins T, Waxman S. Nitric Oxide Blocks Fast, Slow, and Persistent Na+ Channels in C-Type DRG Neurons by S-Nitrosylation. Journal Of Neurophysiology 2002, 87: 761-775. PMID: 11826045, DOI: 10.1152/jn.00369.2001.Peer-Reviewed Original ResearchConceptsSteady-state voltage-dependent inactivationDorsal root ganglion neuronsNitric oxide blockIncubation of neuronsNO scavenger hemoglobinSlow sodium channel inactivationNitric oxide donorFast TTXMembrane-permeable analogSlow TTXVoltage-dependent inactivationDRG neuronsGanglion neuronsSodium channel inactivationCurrent inhibitionOxide donorScavenger hemoglobinPersistent TTXPAPA-NONOateS-nitrosoTTXNeuronsChannel inactivationSlow inactivationCGMP-dependent protein kinase
2001
Flanking regulatory sequences of the locus encoding the murine GDNF receptor, c‐ret, directs lac Z (β‐galactosidase) expression in developing somatosensory system
Sukumaran M, Waxman S, Wood J, Pachnis V. Flanking regulatory sequences of the locus encoding the murine GDNF receptor, c‐ret, directs lac Z (β‐galactosidase) expression in developing somatosensory system. Developmental Dynamics 2001, 222: 389-402. PMID: 11747074, DOI: 10.1002/dvdy.1192.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornBase SequenceChromosome MappingCloning, MolecularConsensus SequenceDrosophila ProteinsEmbryo, MammalianGanglia, SensoryGene ExpressionGene Expression Regulation, DevelopmentalGenes, RegulatorGlial Cell Line-Derived Neurotrophic Factor ReceptorsLac OperonLectinsMiceMice, TransgenicNeurons, AfferentNociceptorsPromoter Regions, GeneticProtein Structure, TertiaryProto-Oncogene ProteinsProto-Oncogene Proteins c-retReceptor Protein-Tyrosine KinasesSpinal CordTranscription Initiation SiteConceptsRegulatory domainLac Z expressionZ expressionCell type-specific expressionDistal regulatory domainEndogenous gene expressionCis-regulatory domainsTranscription initiation siteEntire structural geneSpecific regulatory domainsLac Z reporter geneStructural geneMouse genomeLateral mesodermRegulatory sequencesCpG islandsDNA sequencesPrimitive streakReporter geneFlanking sequencesCosmid contigGene expressionSpecific expressionTransgenic mouse lineInitiation siteContribution of Nav1.8 Sodium Channels to Action Potential Electrogenesis in DRG Neurons
Renganathan M, Cummins T, Waxman S. Contribution of Nav1.8 Sodium Channels to Action Potential Electrogenesis in DRG Neurons. Journal Of Neurophysiology 2001, 86: 629-640. PMID: 11495938, DOI: 10.1152/jn.2001.86.2.629.Peer-Reviewed Original ResearchConceptsAction potential electrogenesisDRG neuronsSodium channelsAction potentialsTTX-R sodium channelsSodium-dependent action potentialsDorsal root ganglion neuronsMultiple sodium channelsSmall DRG neuronsCurrent-clamp recordingsNav1.8 sodium channelsSignificant differencesSteady-state inactivationAction potential overshootMaximum rise slopeMV/msAction potential productionFast TTXGanglion neuronsModest depolarizationNeuronsInput resistanceMembrane depolarizationInward membraneElectrogenesisβ1 adducin gene expression in DRG is developmentally regulated and is upregulated by glial-derived neurotrophic factor and nerve growth factor
Ghassemi F, Dib-Hajj S, Waxman S. β1 adducin gene expression in DRG is developmentally regulated and is upregulated by glial-derived neurotrophic factor and nerve growth factor. Brain Research 2001, 90: 118-124. PMID: 11406290, DOI: 10.1016/s0169-328x(01)00091-2.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCalmodulin-Binding ProteinsCells, CulturedCytoskeletonGanglia, SpinalGene Expression ProfilingGene Expression Regulation, DevelopmentalGlial Cell Line-Derived Neurotrophic FactorNerve Growth FactorNerve Growth FactorsNerve Tissue ProteinsNeurons, AfferentNeuroprotective AgentsRatsRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionConceptsGlial-derived neurotrophic factorReal-time reverse transcription-polymerase chain reactionNeurotrophic factorTrigeminal ganglionDRG culturesRat DRGGrowth factorDorsal root ganglion culturesAdult rat DRGRat dorsal root ganglion culturesSuperior cervical ganglionReverse transcription-polymerase chain reactionExpression levelsNerve growth factorNon-neural tissuesDRG tissueCervical ganglionSciatic nervePolymerase chain reactionGanglion culturesAdducin geneLevel of expressionGangliaLow expression levelsGene expression
2000
Sensory neuron-specific sodium channel SNS is abnormally expressed in the brains of mice with experimental allergic encephalomyelitis and humans with multiple sclerosis
Black J, Dib-Hajj S, Baker D, Newcombe J, Cuzner M, Waxman S. Sensory neuron-specific sodium channel SNS is abnormally expressed in the brains of mice with experimental allergic encephalomyelitis and humans with multiple sclerosis. Proceedings Of The National Academy Of Sciences Of The United States Of America 2000, 97: 11598-11602. PMID: 11027357, PMCID: PMC17246, DOI: 10.1073/pnas.97.21.11598.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrainEncephalomyelitis, Autoimmune, ExperimentalHumansImmunohistochemistryMiceMultiple SclerosisNeurons, AfferentSodium ChannelsConceptsExperimental allergic encephalomyelitisMultiple sclerosisAllergic encephalomyelitisClinical abnormalitiesChannel expressionPurkinje cellsTrigeminal ganglion neuronsBrains of micePeripheral nervous systemSodium channel expressionIon channel expressionCerebellar Purkinje cellsAbnormal repertoiresAxonal degenerationControl miceGanglion neuronsControl subjectsMouse modelNormal brainAnimal modelsNervous systemNeurological diseasesSodium channelsProtein expressionAbnormal patternsLocalization of the tetrodotoxin-resistant sodium channel NaN in nociceptors
Fjell J, Hjelmström P, Hormuzdiar W, Milenkovic M, Aglieco F, Tyrrell L, Dib-Hajj S, Waxman S, Black J. Localization of the tetrodotoxin-resistant sodium channel NaN in nociceptors. Neuroreport 2000, 11: 199-202. PMID: 10683857, DOI: 10.1097/00001756-200001170-00039.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAxonsCorneaFemaleGanglia, SpinalImage Processing, Computer-AssistedImmunohistochemistryMolecular Sequence DataMyelin SheathNAV1.9 Voltage-Gated Sodium ChannelNerve FibersNeurons, AfferentNeuropeptidesNociceptorsPresynaptic TerminalsRanvier's NodesRatsRats, Sprague-DawleySciatic NerveSodium ChannelsTetrodotoxinConceptsSciatic nerveSmall diameter primary sensory neuronsSodium currentTetrodotoxin-resistant sodium channelsTetrodotoxin-resistant sodium currentDorsal root ganglion neuronsSodium channelsPrimary sensory neuronsAxonal sodium currentsNodes of RanvierNociceptive transmissionChannel immunoreactivityGanglion neuronsUnmyelinated fibersAxon terminalsSensory neuronsNerveImmunoreactivityAxonsNeuronsSpecific peptidesNociceptorsIB4CorneaAntibodies
1999
Sodium channels, excitability of primary sensory neurons, and the molecular basis of pain
Waxman S, Cummins T, Dib‐Hajj S, Fjell J, Black J. Sodium channels, excitability of primary sensory neurons, and the molecular basis of pain. Muscle & Nerve 1999, 22: 1177-1187. PMID: 10454712, DOI: 10.1002/(sici)1097-4598(199909)22:9<1177::aid-mus3>3.0.co;2-p.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsPrimary sensory neuronsDRG neuronsSodium channel expressionSodium channel gene expressionSensory neuronsChannel gene expressionSodium channelsChannel expressionSodium currentTTX-sensitive sodium currentAbnormal burst activityNormal DRG neuronsSNS/PN3Resistant sodium currentsDistinct sodium channelsSodium channel geneChannel genesInflammatory painNerve injuryAxonal transectionElectrophysiological abnormalitiesSelective blockadePharmacological approachesBurst activityPainThe molecular pathophysiology of pain: abnormal expression of sodium channel genes and its contributions to hyperexcitability of primary sensory neurons
Waxman S. The molecular pathophysiology of pain: abnormal expression of sodium channel genes and its contributions to hyperexcitability of primary sensory neurons. Pain 1999, 82: s133-s140. PMID: 10491982, DOI: 10.1016/s0304-3959(99)00147-5.Peer-Reviewed Original ResearchConceptsPrimary sensory neuronsSodium channel gene expressionChannel gene expressionSodium channel expressionDRG neuronsSensory neuronsSodium channelsAxonal injuryChannel expressionSmall dorsal root ganglion neuronsAbnormal expressionDorsal root ganglion neuronsMolecular pathophysiologySodium channel geneAbnormal burst activityMultiple sodium channelsSNS/PN3Inflammatory pain modelChannel genesDistinct sodium channelsSodium current expressionInflammatory painNerve injuryPain modelGanglion neuronsDifferential role of GDNF and NGF in the maintenance of two TTX-resistant sodium channels in adult DRG neurons
Fjell J, Cummins T, Dib-Hajj S, Fried K, Black J, Waxman S. Differential role of GDNF and NGF in the maintenance of two TTX-resistant sodium channels in adult DRG neurons. Brain Research 1999, 67: 267-282. PMID: 10216225, DOI: 10.1016/s0169-328x(99)00070-4.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAnimalsAxotomyCell SizeCell SurvivalDown-RegulationDrug ResistanceFemaleGanglia, SpinalGene ExpressionGlial Cell Line-Derived Neurotrophic FactorLectinsMembrane PotentialsNAV1.8 Voltage-Gated Sodium ChannelNAV1.9 Voltage-Gated Sodium ChannelNerve Growth FactorsNerve Tissue ProteinsNeurons, AfferentNeuropeptidesPatch-Clamp TechniquesRatsRats, Sprague-DawleyRNA, MessengerSciatic NerveSodium ChannelsTetrodotoxinUp-RegulationConceptsTTX-R sodium currentsSNS/PN3Small DRG neuronsTTX-R currentsDRG neuronsIB4- neuronsSodium currentElectrophysiological propertiesSmall dorsal root ganglion neuronsDorsal root ganglion neuronsAxotomized DRG neuronsTTX-S currentsWhole-cell patch-clamp studiesTTX-resistant sodium channelsSciatic nerve transectionAdult DRG neuronsDifferent electrophysiological propertiesNear-normal levelsPatch-clamp studiesNerve transectionGDNF treatmentNeurotrophins NGFGanglion neuronsIsolectin IB4Exogenous NGF
1998
Slow Closed-State Inactivation: A Novel Mechanism Underlying Ramp Currents in Cells Expressing the hNE/PN1 Sodium Channel
Cummins T, Howe J, Waxman S. Slow Closed-State Inactivation: A Novel Mechanism Underlying Ramp Currents in Cells Expressing the hNE/PN1 Sodium Channel. Journal Of Neuroscience 1998, 18: 9607-9619. PMID: 9822722, PMCID: PMC6793269, DOI: 10.1523/jneurosci.18-23-09607.1998.Peer-Reviewed Original ResearchConceptsTTX-S currentsRamp currentsDRG neuronsClosed-state inactivationSensory neuronsChannel isoformsDistinct integrative propertiesSmall DRG neuronsSodium channelsTTX-sensitive currentsSlow ramp depolarizationSteady-state inactivationRamp depolarizationNeuronsSkeletal muscleState inactivationIntegrative propertiesInactivation propertiesOpen-state inactivationExcitable cellsNovel mechanismCellsDepolarizationInactivationPN1
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 techniqueNGF has opposing effects on Na+ channel III and SNS gene expression in spinal sensory neurons
Black J, Langworthy K, Hinson A, Dib-Hajj S, Waxman S. NGF has opposing effects on Na+ channel III and SNS gene expression in spinal sensory neurons. Neuroreport 1997, 8: 2331-2335. PMID: 9243635, DOI: 10.1097/00001756-199707070-00046.Peer-Reviewed Original ResearchConceptsNeurotrophin nerve growth factorSmall DRG neuronsExogenous NGFDRG neuronsDifferent sodium channel genesSmall dorsal root ganglion neuronsDorsal root ganglion neuronsSciatic nerve transectionMRNA levelsSpinal sensory neuronsNerve growth factorNerve transectionDRG culturesGanglion neuronsAlpha-IIIAdult ratsSensory neuronsPeripheral targetsSodium channel transcriptsMRNA expressionMembrane excitabilityNeuronsGrowth factorRetrograde transportChannel transcripts
1995
Na+ channel β1 subunit mRNA: differential expression in rat spinal sensory neurons
Oh Y, Sashihara S, Black J, Waxman S. Na+ channel β1 subunit mRNA: differential expression in rat spinal sensory neurons. Brain Research 1995, 30: 357-361. PMID: 7637585, DOI: 10.1016/0169-328x(95)00052-t.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsGanglia, SpinalGene ExpressionIn Situ HybridizationNeurons, AfferentRatsRNA, MessengerSodium ChannelsSpinal CordConceptsDRG neuronsNervous systemChannel beta 1 subunit (Na beta 1) mRNARat dorsal root ganglion neuronsCell bodiesDorsal root ganglion neuronsSubunit mRNAsBeta 1 mRNA expressionRat central nervous systemSmall DRG neuronsLarge DRG neuronsSpinal sensory neuronsPeripheral nervous systemPostnatal day 4Central nervous systemBeta 1 mRNABeta 1 subunit mRNASitu hybridization histochemistryAdult DRGGanglion neuronsSensory neuronsDay 4Hybridization histochemistryMRNA expressionNeuronsSelective loss of slow and enhancement of fast Na+currents in cutaneous afferent dorsal root ganglion neurones following axotomy
Rizzo M, Kocsis J, Waxman S. Selective loss of slow and enhancement of fast Na+currents in cutaneous afferent dorsal root ganglion neurones following axotomy. Neurobiology Of Disease 1995, 2: 87-96. PMID: 8980012, DOI: 10.1006/nbdi.1995.0009.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsFemaleGanglia, SpinalNeurons, AfferentPatch-Clamp TechniquesRatsRats, WistarSkinSodium Channels
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 ResearchConceptsDistal 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
1987
Changes in synaptic morphology associated with presynaptic and postsynaptic activity: An in vitro study of the electrosensory organ of the thornback ray
Fields R, Ellisman M, Waxman S. Changes in synaptic morphology associated with presynaptic and postsynaptic activity: An in vitro study of the electrosensory organ of the thornback ray. Synapse 1987, 1: 335-346. PMID: 2901790, DOI: 10.1002/syn.890010407.Peer-Reviewed Original ResearchConceptsPostsynaptic membraneNeurotransmitter glutamateSynaptic morphologyUltrastructure of synapsesPresynaptic membraneRibbon synapsesDirect depolarizationSynaptic activityPostsynaptic activitySpontaneous activitySynaptic fatigueSynaptic efficacyMorphological changesSynaptic structureSynapsesCytoskeletal alterationsChapter 8 Ionic channel organization of normal and regenerating mammalian axons
Kocsis J, Waxman S. Chapter 8 Ionic channel organization of normal and regenerating mammalian axons. Progress In Brain Research 1987, 71: 89-101. PMID: 2438722, DOI: 10.1016/s0079-6123(08)61816-6.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsIon ChannelsMotor NeuronsNerve RegenerationNeurons, AfferentPeripheral NervesPotassiumSodiumConceptsNerve fibersPeripheral nervesRegenerated nerve fibersCell remodellingNormal developmentMammalian nerve fibresSchwann cellsElectrophysiological characteristicsFine caliberMyelinated axonsImmature axonsAxonal growthMammalian axonsNerveNormal maturationRemodelling occursAxonsCell arrestRemodellingTime courseMyelinIonic channelsLong termMaturationTime of maturation
1986
Differences in intramembranous particle distribution in the paranodal axolemma are not associated with functional differences of dorsal and ventral roots
Fields R, Black J, Bowe C, Kocsis J, Waxman S. Differences in intramembranous particle distribution in the paranodal axolemma are not associated with functional differences of dorsal and ventral roots. Neuroscience Letters 1986, 67: 13-18. PMID: 2425295, DOI: 10.1016/0304-3940(86)90200-4.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsCell MembraneFreeze FracturingIon ChannelsMotor NeuronsNeurons, AfferentRatsSodiumSpinal Nerve Roots