A Mixed Periodic Paralysis & Myotonia Mutant, P1158S, Imparts pH-Sensitivity in Skeletal Muscle Voltage-gated Sodium Channels
Ghovanloo MR, Abdelsayed M, Peters CH, Ruben PC. A Mixed Periodic Paralysis & Myotonia Mutant, P1158S, Imparts pH-Sensitivity in Skeletal Muscle Voltage-gated Sodium Channels. Scientific Reports 2018, 8: 6304. PMID: 29674667, PMCID: PMC5908869, DOI: 10.1038/s41598-018-24719-y.Peer-Reviewed Original ResearchConceptsPeriodic paralysisSkeletal muscle voltageSkeletal muscle channelopathiesHypokalemic periodic paralysisSteady-state fast inactivationLow potassium levelsAutosomal dominant mutationsEpisodic attacksIntense exercisePhysical activityMuscle channelopathiesBlood acidosisCommon triggerPotassium levelsAction potential modelingParalysisSodium channelsMuscular contractionSkeletal muscleMyotoniaPhenotype correlationLate currentPatientsExtracellular pHFast inactivationEffects of acidosis on neuronal voltage-gated sodium channels: Nav1.1 and Nav1.3
Ghovanloo MR, Peters CH, Ruben PC. Effects of acidosis on neuronal voltage-gated sodium channels: Nav1.1 and Nav1.3. Channels 2018, 12: 367-377. PMID: 30362397, PMCID: PMC6284583, DOI: 10.1080/19336950.2018.1539611.Peer-Reviewed Original ResearchConceptsSodium channel subtypesVoltage-gated sodium channelsChannel subtypesNeuronal voltage-gated sodium channelsSodium channelsEffect of acidosisSteady-state fast inactivationPH-sensitive channelsNeonatal neuronsFast inactivationAdult neuronsInhibitory neuronsPathophysiological manifestationsNav1.3Nav1.1Membrane excitabilityExtracellular acidosisNeuronsSubtypesAcidosisModerate reductionExtracellular pHTissue-specific mannerKey contributorExcitability