1994
Effect of glucocorticoids on renal cortical NHE-3 and NHE-1 mRNA
Baum M, Moe OW, Gentry DL, Alpern RJ. Effect of glucocorticoids on renal cortical NHE-3 and NHE-1 mRNA. American Journal Of Physiology 1994, 267: f437-f442. PMID: 8092257, DOI: 10.1152/ajprenal.1994.267.3.f437.Peer-Reviewed Original ResearchConceptsNHE-3 mRNA abundanceProximal tubulesNHE-3NHE-1MRNA abundanceChronic systemic administrationAdministration of dexamethasoneEffects of glucocorticoidsProximal tubule acidificationNHE-1 mRNAUnits/minChronic dexamethasoneTubule acidificationAcute increaseAntiporter activitySystemic administrationGlucocorticoid deficiencyIntravenous administrationBicarbonate absorptionMicrograms/DexamethasoneAntiporter isoformsDexamethasone occursRenal brush-border membrane vesiclesAdministration
1991
Inhibition of Na(+)-independent H+ pump by Na(+)-induced changes in cell Ca2+.
Hays SR, Alpern RJ. Inhibition of Na(+)-independent H+ pump by Na(+)-induced changes in cell Ca2+. The Journal Of General Physiology 1991, 98: 791-813. PMID: 1660062, PMCID: PMC2229082, DOI: 10.1085/jgp.98.4.791.Peer-Reviewed Original ResearchConceptsCell pH recoveryCell Ca2PH recoveryAcid loadPump activityRenal outer medullaryDelayed activationCell acidificationRapid cell acidificationUnits/minApical membraneCell pHSustained elevationFura-2Outer medullaryExtracellular Ca2Inner stripeIntracellular Ca2Steady-state cell pHSustained increaseDimethyl-BAPTAInitial suppressionSpike increasePhysiologic ratesMicrofilament-disrupting agent
1990
Apical and basolateral membrane H+ extrusion mechanisms in inner stripe of rabbit outer medullary collecting duct
Hays SR, Alpern RJ. Apical and basolateral membrane H+ extrusion mechanisms in inner stripe of rabbit outer medullary collecting duct. American Journal Of Physiology 1990, 259: f628-f635. PMID: 2171359, DOI: 10.1152/ajprenal.1990.259.4.f628.Peer-Reviewed Original ResearchConceptsUnits/minPHi recoveryInner stripeAcid loadInitial control levelsSCH 28080Luminal Sch-28080ATPase inhibitorBasolateral membraneTriphasic responseExtrusion mechanismSlow alkalinizationRate of alkalinizationControl levelsCell acidificationRabbitsInhibitorsDuctTotal absenceInitial rateAlkalinizationN-ethylmaleimideRecoveryMin
1985
Mechanism of basolateral membrane H+/OH-/HCO-3 transport in the rat proximal convoluted tubule. A sodium-coupled electrogenic process.
Alpern RJ. Mechanism of basolateral membrane H+/OH-/HCO-3 transport in the rat proximal convoluted tubule. A sodium-coupled electrogenic process. The Journal Of General Physiology 1985, 86: 613-636. PMID: 2999293, PMCID: PMC2228817, DOI: 10.1085/jgp.86.5.613.Peer-Reviewed Original ResearchConceptsUnits/minPeritubular pHHigh extracellular potassium concentrationCell pHSodium concentrationPotassium concentrationExtracellular potassium concentrationBasolateral membranePeritubular potassium concentrationCell depolarizationMeq/Sodium removalCell acidificationTubulesPeritubular fluidTotal absenceSitCellsRatsMinSodium