2015
Ca2+ toxicity due to reverse Na+/Ca2+ exchange contributes to degeneration of neurites of DRG neurons induced by a neuropathy-associated Nav1.7 mutation
Estacion M, Vohra BP, Liu S, Hoeijmakers J, Faber CG, Merkies IS, Lauria G, Black JA, Waxman SG. Ca2+ toxicity due to reverse Na+/Ca2+ exchange contributes to degeneration of neurites of DRG neurons induced by a neuropathy-associated Nav1.7 mutation. Journal Of Neurophysiology 2015, 114: 1554-1564. PMID: 26156380, PMCID: PMC4561630, DOI: 10.1152/jn.00195.2015.Peer-Reviewed Original ResearchConceptsSmall fiber neuropathyDRG neuronsNav1.7 mutationCell bodiesDorsal root ganglion neuronsDRG cell bodiesModes of NCXIntraepidermal nerve fibersVoltage-gated sodium channel Nav1.7Sodium/calcium exchangerDegeneration of neuritesSodium channel Nav1.7Levels of intracellularTreatment of WTAxonal degenerationGanglion neuronsFunction missense mutationsNerve fibersAxon degenerationChannel Nav1.7Reverse NCXCalcium exchangerNav1.7DegenerationNeurons
2013
Sodium Channels Contribute to Degeneration of Dorsal Root Ganglion Neurites Induced by Mitochondrial Dysfunction in an In Vitro Model of Axonal Injury
Persson AK, Kim I, Zhao P, Estacion M, Black JA, Waxman SG. Sodium Channels Contribute to Degeneration of Dorsal Root Ganglion Neurites Induced by Mitochondrial Dysfunction in an In Vitro Model of Axonal Injury. Journal Of Neuroscience 2013, 33: 19250-19261. PMID: 24305821, PMCID: PMC6618782, DOI: 10.1523/jneurosci.2148-13.2013.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsAxotomyCell DeathCells, CulturedGanglia, SpinalHumansHydrogen PeroxideImmunohistochemistryMiceMice, TransgenicMicrotubulesMitochondrial DiseasesNerve DegenerationNeuritesOxidantsRotenoneSodium Channel BlockersSodium ChannelsSodium-Calcium ExchangerSodium-Potassium-Exchanging ATPaseTetrodotoxinThioureaUncoupling AgentsConceptsAxonal degenerationNeurite degenerationSodium channelsKB-R7943Mouse peripheral sensory neuronsRotenone-induced mitochondrial dysfunctionOxidative stressMitochondrial dysfunctionPeripheral sensory neuronsDorsal root gangliaPeripheral nervous systemDegeneration of neuritesMitochondrial functionVoltage-gated sodium channelsMultiple neurodegenerative disordersSodium-calcium exchangerImpaired mitochondrial functionInjurious cascadeAxonal injuryActivity blockadeRoot gangliaAxonal neuropathySensory neuronsNCX activityDysfunctional intracellular
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