1999
The role of voltage-gated Ca2+ channels in anoxic injury of spinal cord white matter
Imaizumi T, Kocsis J, Waxman S. The role of voltage-gated Ca2+ channels in anoxic injury of spinal cord white matter. Brain Research 1999, 817: 84-92. PMID: 9889329, DOI: 10.1016/s0006-8993(98)01214-1.Peer-Reviewed Original ResearchConceptsVoltage-gated Ca2Spinal cord axonsAnoxic injuryDorsal columnsR-type voltage-gated Ca2N-type calcium channelsSpinal cord white matterRat dorsal columnsDorsal column axonsR-type Ca2Rat spinal cordCord white matterT-type channelsInflux of Ca2Dose-dependent mannerLoss of conductionAxonal conductionSpinal cordChannel blockersCalcium channelsSurface stimulationWhite matterPerfusion solutionInjuryGlass microelectrodes
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 analysisTransplantationResistance 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
1994
Type II sodium channels in spinal cord astrocytes in situ: Immunocytochemical observations
Black J, Westenbroek R, Ransom B, Catterall W, Waxman S. Type II sodium channels in spinal cord astrocytes in situ: Immunocytochemical observations. Glia 1994, 12: 219-227. PMID: 7851989, DOI: 10.1002/glia.440120307.Peer-Reviewed Original ResearchConceptsAdult rat spinal cordRat spinal cordOptic nerveSubtype-specific sequencesSpinal cordVentral funiculusSpinal cord white matter tractsSpinal cord white matterSodium channelsSpinal cord astrocytesCord white matterWhite matter tractsType ISodium channel alphaWhite matterAstrocytesNerveImmunocytochemical methodsCordChannel alphaSodium channel IIIsoform expressionDetectable labelingType II sodium channelsImmunocytochemical observationsAstrocyte Na+ channels are required for maintenance of Na+/K(+)-ATPase activity
Sontheimer H, Fernandez-Marques E, Ullrich N, Pappas C, Waxman S. Astrocyte Na+ channels are required for maintenance of Na+/K(+)-ATPase activity. Journal Of Neuroscience 1994, 14: 2464-2475. PMID: 8182422, PMCID: PMC6577452, DOI: 10.1523/jneurosci.14-05-02464.1994.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornAstrocytesAstrocytomaCell LineCells, CulturedElectrophysiologyGanglia, SpinalGliomaMembrane PotentialsModels, BiologicalOuabainRatsRats, Sprague-DawleyRubidiumSodiumSodium ChannelsSodium-Potassium-Exchanging ATPaseStrophanthidinTetrodotoxinTime FactorsTumor Cells, CulturedConceptsEffects of TTXGlial cellsAction potential electrogenesisRat spinal cordPatch-clamp recordingsAstrocyte membrane potentialDose-dependent mannerVoltage-activated channelsAcute blockadeSpinal cordVoltage-activated ion channelsSpecific blockerATPase activityAstrocytesTTXAstrocyte deathAction potentialsUnidirectional influxBlockadeExcitable cellsIon channelsOuabainExtracellular spaceMembrane potentialIon levels
1986
Effects of delayed myelination by oligodendrocytes and Schwann cells on the macromolecular structure of axonal membrane in rat spinal cord
Black J, Waxman S, Sims T, Gilmore S. Effects of delayed myelination by oligodendrocytes and Schwann cells on the macromolecular structure of axonal membrane in rat spinal cord. Brain Cell Biology 1986, 15: 745-761. PMID: 3819778, DOI: 10.1007/bf01625192.Peer-Reviewed Original ResearchConceptsDorsal funiculusSpinal cordSchwann cellsMyelin sheathAxonal membraneControl spinal cordsLumbosacral spinal cordSchwann cell ensheathmentRat spinal cordThin myelin sheathsDorsal spinal rootsDays of ageVoltage-sensitive sodium channelsSubsequent myelinationSpinal rootsMyelinated fibersLarge axonsCordMyelinationOligodendrocytesFuniculusSodium channelsIMP densityE-face intramembranous particlesInternodal axolemma
1985
Perinodal astrocytic processes at nodes of ranvier in developing normal and glial cell deficient rat spinal cord
Sims T, Waxman S, Black J, Gilmore S. Perinodal astrocytic processes at nodes of ranvier in developing normal and glial cell deficient rat spinal cord. Brain Research 1985, 337: 321-331. PMID: 4027576, DOI: 10.1016/0006-8993(85)90069-1.Peer-Reviewed Original ResearchConceptsPerinodal astrocytic processesLumbar spinal cordSpinal cordGlial cellsAstrocytic processesNodes of RanvierThird postnatal dayRat spinal cordSpinal cord axonsIrradiated spinal cordStages of myelinationAstrocyte involvementVentral funiculusNeuronal elementsPostnatal dayOligodendrocyte populationCentral myelinCordAstrocytesProfound reductionMyelin sheathAxonsRatsNodal axolemmaPresumptive roleGlial proliferation in the irradiated rat spinal cord
Sims T, Waxman S, Gilmore S. Glial proliferation in the irradiated rat spinal cord. Acta Neuropathologica 1985, 68: 169-172. PMID: 4072625, DOI: 10.1007/bf00688641.Peer-Reviewed Original ResearchConceptsSpinal cordRat spinal cordPost-irradiation intervalsGlial proliferationIncorporation of3H-thymidineGlial cellsAdjacent thin sectionsWhite matterThick plastic sectionsCell bodiesMyelin sheathVentral halfCordOf3H-thymidineAstrogliaIrregular outlinePresent studyMitotic cellsCellsPlastic sectionsBundles of filamentsRatsMyelinationOligodendrocytesMembrane ultrastructure of developing axons in glial cell deficient rat spinal cord
Black J, Sims T, Waxman S, Gilmore S. Membrane ultrastructure of developing axons in glial cell deficient rat spinal cord. Brain Cell Biology 1985, 14: 79-104. PMID: 4009213, DOI: 10.1007/bf01150264.Peer-Reviewed Original Research