1998
Chronic hyperosmolality increases NHE3 activity in OKP cells.
Ambühl P, Amemiya M, Preisig PA, Moe OW, Alpern RJ. Chronic hyperosmolality increases NHE3 activity in OKP cells. Journal Of Clinical Investigation 1998, 101: 170-177. PMID: 9421479, PMCID: PMC508553, DOI: 10.1172/jci62.Peer-Reviewed Original ResearchConceptsNa/H exchanger 3Na/H antiporter activityDiabetes mellitusNHE3 mRNA abundanceNHE3 protein abundanceAntiporter activityChronic hypertonicityGlomerular hyperfiltrationDiabetic nephropathyNa/H antiporterChronic hyperosmolalityOKP cellsExchanger 3MOsm/NHE3 activityRelevant increaseMellitusSignificant increaseChronicH antiporterExtracellular glucoseHypertonic incubationMRNA abundanceHypertonicitySmall increase
1992
Induction of stress proteins in cultured myogenic cells. Molecular signals for the activation of heat shock transcription factor during ischemia.
Benjamin IJ, Horie S, Greenberg ML, Alpern RJ, Williams RS. Induction of stress proteins in cultured myogenic cells. Molecular signals for the activation of heat shock transcription factor during ischemia. Journal Of Clinical Investigation 1992, 89: 1685-1689. PMID: 1569208, PMCID: PMC443048, DOI: 10.1172/jci115768.Peer-Reviewed Original ResearchConceptsGlucose deprivationControl levelsATP depletionHeat shock protein 70Ischemic injuryHeat shock factorIschemic tissueIschemic cellsHigh-pressure liquid chromatographyHypoxia resultsM rotenoneC2 myogenic cellsStress proteinsMyogenic cellsNormoxic conditionsOxidative metabolismProtein 70ATP storesCultured myogenic cellsConsensus heat shock elementIschemiaATP poolHSF activationMajor stress proteinsDNA-binding activity
1991
Dietary 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
1987
Role of the Na+/H+ antiporter in rat proximal tubule bicarbonate absorption.
Preisig PA, Ives HE, Cragoe EJ, Alpern RJ, Rector FC. Role of the Na+/H+ antiporter in rat proximal tubule bicarbonate absorption. Journal Of Clinical Investigation 1987, 80: 970-978. PMID: 2888788, PMCID: PMC442334, DOI: 10.1172/jci113190.Peer-Reviewed Original Research
1985
Amiloride inhibition of proximal tubular acidification
Howlin KJ, Alpern RJ, Rector FC. Amiloride inhibition of proximal tubular acidification. American Journal Of Physiology 1985, 248: f773-f778. PMID: 2988347, DOI: 10.1152/ajprenal.1985.248.6.f773.Peer-Reviewed Original ResearchConceptsProximal tubular acidificationLuminal amilorideBicarbonate absorptionX minTubular acidificationM amilorideSodium chloride absorptionLate proximal tubular fluidProximal tubular fluidPerfusion rateProximal acidificationVivo microperfusionTubular fluidKidney cortexChloride absorptionInhibition of acidificationPmol xAmilorideNonspecific inhibitionAmiloride inhibitionGreater inhibitionBrush border membrane vesiclesInhibitionGlucose effluxPotent inhibitor