1997
Adaptation to low-K+ media increases H(+)-K(+)-ATPase but not H(+)-ATPase-mediated pHi recovery in OMCD1 cells
Guntupalli J, Onuigbo M, Wall S, Alpern RJ, DuBose TD. Adaptation to low-K+ media increases H(+)-K(+)-ATPase but not H(+)-ATPase-mediated pHi recovery in OMCD1 cells. American Journal Of Physiology 1997, 273: c558-c571. PMID: 9277353, DOI: 10.1152/ajpcell.1997.273.2.c558.Peer-Reviewed Original Research
1991
Chronic adaptations in proximal tubular H/HCO3 transporters.
Alpern RJ, Horie S, Moe O, Tejedor A, Miller RT, Preisig PA. Chronic adaptations in proximal tubular H/HCO3 transporters. Kidney International Supplement 1991, 33: s29-32. PMID: 1653870.Peer-Reviewed Original ResearchConceptsCultured proximal tubule cellsChronic hyperfiltrationNa/H antiporterProximal tubule cellsChronic acidosisTubule cellsNa/H antiporter activityH antiporterK deficiencyEffect of acidosisExtracellular fluid pHChronic adaptationsAcidosisHyperfiltrationCotransporter activityAbundance of mRNAParallel increaseHCO3- transportersAcid preincubationDeficiencyFluid pHCellsAntiporter activityProtein synthesisExtracellular signalsDietary NaCl modulates Na(+)-H+ antiporter activity in renal cortical apical membrane vesicles
Moe OW, Tejedor A, Levi M, Seldin DW, Preisig PA, Alpern RJ. Dietary NaCl modulates Na(+)-H+ antiporter activity in renal cortical apical membrane vesicles. American Journal Of Physiology 1991, 260: f130-f137. PMID: 1847012, DOI: 10.1152/ajprenal.1991.260.1.f130.Peer-Reviewed Original ResearchConceptsDietary NaClNaCl reabsorptionSystemic acid-base disturbancesExtracellular fluid volume depletionNaHCO3 reabsorptionExtracellular fluid volume expansionFluid volume depletionHigh-salt dietChronic metabolic alkalosisFluid volume expansionAcridine orange fluorescence methodExtracellular fluid volumeAcid-base disturbancesAntiporter activityDietary protocolChronic alterationsVolume depletionMetabolic alkalosisChronic changesHS dietApical membrane vesiclesLS dietFluid volumeRatsReabsorption
1984
Regulation of proximal bicarbonate reabsorption
Cogan MG, Alpern RJ. Regulation of proximal bicarbonate reabsorption. American Journal Of Physiology 1984, 247: f387-f395. PMID: 6148019, DOI: 10.1152/ajprenal.1984.247.3.f387.Peer-Reviewed Original Research
1983
Effects of extracellular fluid volume and plasma bicarbonate concentration on proximal acidification in the rat.
Alpern RJ, Cogan MG, Rector FC. Effects of extracellular fluid volume and plasma bicarbonate concentration on proximal acidification in the rat. Journal Of Clinical Investigation 1983, 71: 736-746. PMID: 6826733, PMCID: PMC436924, DOI: 10.1172/jci110821.Peer-Reviewed Original ResearchConceptsNet bicarbonate absorptionExtracellular fluid volumeVolume-expanded ratsLuminal bicarbonate concentrationPlasma bicarbonate concentrationBicarbonate absorptionVolume statusFluid volumeBicarbonate concentrationProton secretionExtracellular fluid volume statusBicarbonate permeabilityFluid volume statusPeritubular bicarbonate concentrationsProximal acidificationHydropenic ratsRatsAcidotic ratsSecretionAbove inhibitionLuminal compositionAlkalosisVolume expansionTubulesMM bicarbonate