2003
Calcium-dependent, swelling-activated K+ conductance in human neuroblastoma cells
Basavappa S, Mangel A, Boulpaep E. Calcium-dependent, swelling-activated K+ conductance in human neuroblastoma cells. Biochemical And Biophysical Research Communications 2003, 308: 759-763. PMID: 12927783, DOI: 10.1016/s0006-291x(03)01481-5.Peer-Reviewed Original ResearchConceptsHuman neuroblastoma cell line CHP-100CHP-100Regulatory volume decreaseCell-attached patch-clamp studiesFree extracellular solutionHuman neuroblastoma cellsSwelling-activated ClPatch-clamp studiesFura-2Extracellular osmolarityFree extracellularNeuroblastoma cellsMOsm/Hypoosmotic solutionCell swellingExtracellular solutionCl- channelsHypoosmotic stressPresent studyMost mammalian cellsEGTACellsVolume decreaseEffluxPrevious studies
2000
An electroneutral sodium/bicarbonate cotransporter NBCn1 and associated sodium channel
Choi I, Aalkjaer C, Boulpaep E, Boron W. An electroneutral sodium/bicarbonate cotransporter NBCn1 and associated sodium channel. Nature 2000, 405: 571-575. PMID: 10850716, DOI: 10.1038/35014615.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAnimalsBicarbonatesBiological TransportCarrier ProteinsChloridesCloning, OrganismDNA, ComplementaryElectrophysiologyHumansMolecular Sequence DataRatsRecombinant ProteinsReverse Transcriptase Polymerase Chain ReactionRNA, ComplementarySequence Homology, Amino AcidSodiumSodium ChannelsSodium-Bicarbonate SymportersXenopus
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
1997
Expression cloning and characterization of a renal electrogenic Na+ /HCO3− cotransporter
Romero M, Hediger M, Boulpaep E, Boron W. Expression cloning and characterization of a renal electrogenic Na+ /HCO3− cotransporter. Nature 1997, 387: 409-413. PMID: 9163427, DOI: 10.1038/387409a0.Peer-Reviewed Original ResearchConceptsPotential membrane-spanning domainsMembrane-spanning domainsElectrogenic sodium bicarbonate cotransporterBinding of inhibitorsSodium bicarbonate cotransporterAnimal cellsBicarbonate transportersElectrogenic transportersSuccessful cloningExpression cloningComplementary DNAPrincipal regulatorAmino acidsBicarbonate cotransporterProtein purificationFunctional familiesXenopus oocytesMolecular informationTransportersCloningReproductive systemSalamander Ambystoma tigrinumProteinAmbystoma tigrinumIntracellular pH
1996
A novel preparation of dissociated renal proximal tubule cells that maintain epithelial polarity in suspension
Segal A, Boulpaep E, Maunsbach A. A novel preparation of dissociated renal proximal tubule cells that maintain epithelial polarity in suspension. American Journal Of Physiology 1996, 270: c1843-c1863. PMID: 8764170, DOI: 10.1152/ajpcell.1996.270.6.c1843.Peer-Reviewed Original ResearchConceptsEpithelial polarityFunctional polaritySingle cellsMembrane trafficking pathwaysCell surface polarityBasolateral membrane domainsIon channel proteinsBasolateral membraneApical brush borderCell polarityTrafficking pathwaysActin cytoskeletonMembrane domainsProximal tubule cellsMost epithelial cellsChannel proteinsZO-1 proteinTubule cellsJunctional complexesTight junctional complexesPolarized structureSingle cell modelEpithelial cellsRenal proximal tubule cellsZO-1
1988
Cell membrane water permeabilities and streaming currents in Ambystoma proximal tubule
Tripathi S, Boulpaep E. Cell membrane water permeabilities and streaming currents in Ambystoma proximal tubule. American Journal Of Physiology 1988, 255: f188-f203. PMID: 3394810, DOI: 10.1152/ajprenal.1988.255.1.f188.Peer-Reviewed Original ResearchGlucocorticoids have a different action than aldosterone on target tissue
Halevy J, Boulpaep E, Budinger M, Binder H, Hayslett J. Glucocorticoids have a different action than aldosterone on target tissue. American Journal Of Physiology 1988, 254: f153-f158. PMID: 3337244, DOI: 10.1152/ajprenal.1988.254.1.f153.Peer-Reviewed Original ResearchConceptsRU 28362Same doseInhibitory actionDexamethasone-treated animalsBody wt-1Effects of glucocorticoidsEffect of dexamethasoneReceptor-independent actionsRat distal colonSodium channel blockersMarked inhibitory actionEquivalent short-circuit currentBasolateral potential differenceAldosterone receptorsEpithelial changesDistal colonChannel blockersAldosteroneSynthetic glucocorticoidDay 1WT-1Large intestineGlucocorticoidsEpithelial resistanceMarked inhibition
1987
Ultrastructural changes in isolated perfused proximal tubules during osmotic water flow
Maunsbach A, Tripathi S, Boulpaep E. Ultrastructural changes in isolated perfused proximal tubules during osmotic water flow. American Journal Of Physiology 1987, 253: f1091-f1104. PMID: 3425719, DOI: 10.1152/ajprenal.1987.253.6.f1091.Peer-Reviewed Original ResearchIsolated perfused Ambystoma proximal tubule: hydrodynamics modulates ultrastructure
Tripathi S, Boulpaep E, Maunsbach A. Isolated perfused Ambystoma proximal tubule: hydrodynamics modulates ultrastructure. American Journal Of Physiology 1987, 252: f1129-f1147. PMID: 3591955, DOI: 10.1152/ajprenal.1987.252.6.f1129.Peer-Reviewed Original Research
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 ResearchMeSH KeywordsAmbystomaAnimalsBiological TransportElectrophysiologyFemaleIon ChannelsKidney Tubules, ProximalMembrane PotentialsPostural BalanceIntracellular 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 tigrinum
1982
Ionic conductive properties and electrophysiology of the rabbit cortical collecting tubule
O'Neil R, Boulpaep E. Ionic conductive properties and electrophysiology of the rabbit cortical collecting tubule. American Journal Of Physiology 1982, 243: f81-f95. PMID: 7091368, DOI: 10.1152/ajprenal.1982.243.1.f81.Peer-Reviewed Original Research
1978
Factors influencing transepithelial potential difference in mammalian distal tubule
Hayslett J, Boulpaep E, Giebisch G. Factors influencing transepithelial potential difference in mammalian distal tubule. American Journal Of Physiology 1978, 234: f182-f191. PMID: 629352, DOI: 10.1152/ajprenal.1978.234.3.f182.Peer-Reviewed Original Research