1999
Immunolocalization of the electrogenic Na+- HCO 3 − cotransporter in mammalian and amphibian kidney
Schmitt B, Biemesderfer D, Romero M, Boulpaep E, Boron W. Immunolocalization of the electrogenic Na+- HCO 3 − cotransporter in mammalian and amphibian kidney. American Journal Of Physiology 1999, 276: f27-f38. PMID: 9887077, DOI: 10.1152/ajprenal.1999.276.1.f27.Peer-Reviewed Original ResearchConceptsRat kidney NBCProximal tubulesDistal tubulesIndirect immunofluorescence microscopyEarly distal tubuleLate distal tubuleControl fusion proteinHCO-3 reabsorptionHCO-3 cotransporterRenal proximal tubulesBasolateral labelingImmunofluorescence microscopyRenal microsomesGuinea pigsRat kidneyHEK-293 cellsKidneyPreabsorption experimentsBasolateral stainingRabbit kidneyControl oocytesFusion proteinRatsProtein levelsNBC protein
1998
Properties of an Inwardly Rectifying ATP-sensitive K+ Channel in the Basolateral Membrane of Renal Proximal Tubule
Mauerer U, Boulpaep E, Segal A. Properties of an Inwardly Rectifying ATP-sensitive K+ Channel in the Basolateral Membrane of Renal Proximal Tubule. The Journal Of General Physiology 1998, 111: 139-160. PMID: 9417141, PMCID: PMC1887768, DOI: 10.1085/jgp.111.1.139.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAmbystomaAnimalsBariumBiological TransportCationsCells, CulturedCytidine TriphosphateDiazoxideDiureticsElectric ConductivityGlyburideGuanosine TriphosphateHypoglycemic AgentsInosine TriphosphateIon Channel GatingKidney Tubules, ProximalKineticsMicrovilliPatch-Clamp TechniquesPotassium ChannelsSodium Chloride Symporter InhibitorsSodium-Potassium-Exchanging ATPaseThalliumThymine NucleotidesUridine TriphosphateConceptsProximal tubule cellsProximal tubulesTubule cellsBasolateral membraneChannel opener diazoxideChannel activityPump-leak couplingRenal proximal tubulesPivotal physiological rolesOpener diazoxideMillimolar dosesMM ATPHigh dosesPotassium conductanceCell membrane potentialInternal Mg2Cytosolic additionATPase pumpRegulation of an Inwardly Rectifying ATP-sensitive K+ Channel in the Basolateral Membrane of Renal Proximal Tubule
Mauerer U, Boulpaep E, Segal A. Regulation of an Inwardly Rectifying ATP-sensitive K+ Channel in the Basolateral Membrane of Renal Proximal Tubule. The Journal Of General Physiology 1998, 111: 161-180. PMID: 9417142, PMCID: PMC1887764, DOI: 10.1085/jgp.111.1.161.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAmbystomaAnimalsBiological TransportCalciumCell MembraneColforsinCyclic AMP-Dependent Protein KinasesEnzyme ActivationEpithelial CellsHydrogen-Ion ConcentrationIon Channel GatingKidney Tubules, ProximalPatch-Clamp TechniquesPhosphorylationPotassium ChannelsProtein Kinase CSodium-Potassium-Exchanging ATPaseConceptsBasolateral membraneProtein kinase AActin cytoskeletonATPase pumpOuter membraneProtein kinaseKinase ACellular metabolismKATP channelsSecond messengerStimulation of transportTransport activityPhysiological importanceMembrane stretchPhorbol esterChannel activityMembrane patchesRegulationIntracellularO patchesFunctional couplingHypotonic swellingCell-attached patchesCell depolarizationRenal proximal tubules
1997
The electrogenic Na/HCO3 cotransporter.
Boron W, Fong P, Hediger M, Boulpaep E, Romero M. The electrogenic Na/HCO3 cotransporter. Wiener Klinische Wochenschrift 1997, 109: 445-56. PMID: 9261985.Peer-Reviewed Original ResearchConceptsElectrogenic Na/HCO3 cotransporterProximal tubulesHCO3- cotransporterRenal proximal tubulesCO2/10 mM HCO3HCO3- transportersRegulation of intracellularBasolateral membraneNumber of tissuesNative oocytesRapid hyperpolarizationXenopus laevis oocytesExtracellular ClBicarbonate cotransporterOocyte expressionCotransporterMM HCO3OocytesCell typesMost cellsMembrane potentialAmino acid homologySingle cloneWater-injected controlsTubulesThe Renal Electrogenic Na+:HCO3− Cotransporter
Boron W, Hediger M, Boulpaep E, Romero M. The Renal Electrogenic Na+:HCO3− Cotransporter. Journal Of Experimental Biology 1997, 200: 263-268. PMID: 9050234, DOI: 10.1242/jeb.200.2.263.Peer-Reviewed Original ResearchMeSH KeywordsAmbystomaAnimalsBicarbonatesCarrier ProteinsCloning, MolecularDNA, ComplementaryHydrogen-Ion ConcentrationKidney Tubules, ProximalMembrane PotentialsMicroinjectionsOocytesRabbitsRecombinant Fusion ProteinsRNA, MessengerSodiumSodium-Bicarbonate SymportersStructure-Activity RelationshipXenopus laevisConceptsRenal proximal tubules
1983
Rheogenic transport in the renal proximal tubule.
Sackin H, Boulpaep E. Rheogenic transport in the renal proximal tubule. The Journal Of General Physiology 1983, 82: 819-851. PMID: 6319539, PMCID: PMC2228722, DOI: 10.1085/jgp.82.6.819.Peer-Reviewed Original ResearchIntracellular pH regulation in the renal proximal tubule of the salamander. Basolateral HCO3- transport.
Boron W, Boulpaep E. Intracellular pH regulation in the renal proximal tubule of the salamander. Basolateral HCO3- transport. The Journal Of General Physiology 1983, 81: 53-94. PMID: 6833997, PMCID: PMC2215562, DOI: 10.1085/jgp.81.1.53.Peer-Reviewed Original ResearchConceptsProximal tubulesRenal proximal tubulesRapid fallBasolateral HCO3- transportBasolateral membraneTiger salamander Ambystoma tigrinumReversible fallNominal absencePresence of HCO3Removal of ClTransient depolarizationSimilar reductionBasolateral membrane potentialSalamander Ambystoma tigrinumHCO3- transportHCO3- transportersMembrane potentialOnly minor effectsAforementioned changesTubulesCl-sensitive microelectrodesDepolarizationConstant PCO2Opposite effectAmbystoma tigrinumIntracellular pH regulation in the renal proximal tubule of the salamander. Na-H exchange.
Boron W, Boulpaep E. Intracellular pH regulation in the renal proximal tubule of the salamander. Na-H exchange. The Journal Of General Physiology 1983, 81: 29-52. PMID: 6833996, PMCID: PMC2215563, DOI: 10.1085/jgp.81.1.29.Peer-Reviewed Original ResearchConceptsProximal tubulesProximal tubule cellsRenal proximal tubulesTiger salamander Ambystoma tigrinumPH-sensitive microelectrodesFree RingerMaximal effectTubule cellsTransient riseDiuretic amilorideBasolateral sideBasolateral solutionExponential time courseSalamander Ambystoma tigrinumTime courseCl removalMaximal rateBasolateral membraneNormal rateTubulesAmbystoma tigrinumPH regulationCellsActive transportRecovery