2004
An autocrine role for endothelin-1 in the regulation of proximal tubule NHE3
Licht C, Laghmani K, Yanagisawa M, Preisig PA, Alpern RJ. An autocrine role for endothelin-1 in the regulation of proximal tubule NHE3. Kidney International 2004, 65: 1320-1326. PMID: 15086471, DOI: 10.1111/j.1523-1755.2004.00506.x.Peer-Reviewed Original ResearchConceptsChronic metabolic acidosisMetabolic acidosisReverse transcription-polymerase chain reactionProximal tubulesKidney cortexCompetitive reverse transcription-polymerase chain reactionProximal tubule NHE3NHE3 activityPreproET-1 expressionEndothelin B receptorEndothelin-1 expressionET-1 expressionPreproET-1 mRNA abundancePreproET-1 mRNA expressionTranscription-polymerase chain reactionProximal tubule cellsRenal proximal tubulesMRNA abundanceEndothelin-1Control ratsAbdominal aortaAutocrine roleAcidosisTubule cellsAutocrine regulation
1993
Renin expression in renal proximal tubule.
Moe OW, Ujiie K, Star RA, Miller RT, Widell J, Alpern RJ, Henrich WL. Renin expression in renal proximal tubule. Journal Of Clinical Investigation 1993, 91: 774-779. PMID: 7680667, PMCID: PMC288027, DOI: 10.1172/jci116296.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBase SequenceBlotting, SouthernCells, CulturedCloning, MolecularColforsinEnalaprilIn Vitro TechniquesIsoproterenolKidney Tubules, ProximalKineticsMaleMolecular Sequence DataMuscle, Smooth, VascularOligodeoxyribonucleotidesPoly APolymerase Chain ReactionRabbitsRatsRats, Sprague-DawleyReninRNARNA, MessengerTranscription, GeneticConceptsProximal tubule cellsCultured proximal tubule cellsRenin-angiotensin systemProximal tubulesRenal proximal tubulesTubule cellsRenin activityLocal renin-angiotensin systemPrimary culturesPresence of reninRabbit proximal tubule cellsAngiotensin-converting enzymeMammalian renal proximal tubulePrevious immunohistochemical studiesSynthesized reninAngiotensin receptorsAngiotensin IIRenin contentPolymerase chain reactionRenin expressionImmunohistochemical studyM isoproterenolM forskolinNormal ratsRenin mRNA
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
Effects of endothelin on in vitro renin secretion
Moe O, Tejedor A, Campbell WB, Alpern RJ, Henrich WL. Effects of endothelin on in vitro renin secretion. American Journal Of Physiology 1991, 260: e521-e525. PMID: 2018117, DOI: 10.1152/ajpendo.1991.260.4.e521.Peer-Reviewed Original ResearchMeSH KeywordsAffinity LabelsAnimalsEgtazic AcidEndothelinsIn Vitro TechniquesJuxtaglomerular ApparatusKidney CortexKineticsRatsReninConceptsRat kidney cortical slicesRenin secretionKidney cortical slicesEndothelin-1Juxtaglomerular cellsRenin releaseCortical slicesRenin inhibitionBasal renin releaseVitro renin secretionBasal renin secretionRenal renin secretionEffects of endothelinIntracellular calcium bufferAddition of isoproterenolMechanism of actionRenin inhibitorsIsoproterenolSecretionCalcium bufferDistinct preparationsBAPTASimilar effectsDirect effectInhibition
1990
Basolateral membrane Na(+)-independent Cl-/HCO3- exchange in the inner stripe of the rabbit outer medullary collecting tubule.
Hays SR, Alpern RJ. Basolateral membrane Na(+)-independent Cl-/HCO3- exchange in the inner stripe of the rabbit outer medullary collecting tubule. The Journal Of General Physiology 1990, 95: 347-367. PMID: 2307960, PMCID: PMC2216319, DOI: 10.1085/jgp.95.2.347.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBicarbonatesChloridesFemaleHydrogen-Ion ConcentrationIn Vitro TechniquesKidney TubulesKidney Tubules, CollectingRabbitsSodiumConceptsInner stripePeritubular ClDistal nephron segmentsBasolateral membraneCell acidificationCell pHLuminal changesUrinary acidificationNephron segmentsPH-sensitive fluorescent dyeIndependent ClCell alkalinizationCO2/HCO3Peritubular pHVoltage clampTubulesTwo-thirdsRabbitsTotal replacementCell pH changes
1988
Regulation of cell pH by ambient bicarbonate, carbon dioxide tension, and pH in the rabbit proximal convoluted tubule.
Krapf R, Berry CA, Alpern RJ, Rector FC. Regulation of cell pH by ambient bicarbonate, carbon dioxide tension, and pH in the rabbit proximal convoluted tubule. Journal Of Clinical Investigation 1988, 81: 381-389. PMID: 3123519, PMCID: PMC329580, DOI: 10.1172/jci113330.Peer-Reviewed Original Research
1987
Basolateral membrane Na/base cotransport is dependent on CO2/HCO3 in the proximal convoluted tubule.
Krapf R, Alpern RJ, Rector FC, Berry CA. Basolateral membrane Na/base cotransport is dependent on CO2/HCO3 in the proximal convoluted tubule. The Journal Of General Physiology 1987, 90: 833-853. PMID: 2831294, PMCID: PMC2228880, DOI: 10.1085/jgp.90.6.833.Peer-Reviewed Original Research
1986
Electrogenic sodium/bicarbonate cotransport in rabbit renal cortical basolateral membrane vesicles.
Akiba T, Alpern RJ, Eveloff J, Calamina J, Warnock DG. Electrogenic sodium/bicarbonate cotransport in rabbit renal cortical basolateral membrane vesicles. Journal Of Clinical Investigation 1986, 78: 1472-1478. PMID: 3782468, PMCID: PMC423898, DOI: 10.1172/jci112738.Peer-Reviewed Original ResearchConceptsMembrane vesiclesBasolateral membrane vesiclesSodium uptakePotassium diffusion potentialBicarbonate cotransporterSaturable stimulationSodium/bicarbonate cotransporterVesiclesRabbit renal cortexProteinDisulfonic stilbeneBicarbonate transportPresence of bicarbonateUptakeKinetic analysisRenal cortex