2015
Regulation of glomerulotubular balance. III. Implication of cytosolic calcium in flow-dependent proximal tubule transport
Du Z, Weinbaum S, Weinstein A, Wang T. Regulation of glomerulotubular balance. III. Implication of cytosolic calcium in flow-dependent proximal tubule transport. American Journal Of Physiology. Renal Physiology 2015, 308: f839-f847. PMID: 25651568, PMCID: PMC4398834, DOI: 10.1152/ajprenal.00601.2014.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBicarbonatesBiological TransportCalciumCalcium-Transporting ATPasesChelating AgentsCytosolEnzyme InhibitorsIn Vitro TechniquesInositol 1,4,5-Trisphosphate ReceptorsKidney Tubules, ProximalKineticsMice, Inbred C57BLPerfusionRenal ReabsorptionSodiumSodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersConceptsNa/H exchanger 3Luminal Ca(2Flow-induced increaseCytosolic calciumProximal tubulesCa(2+) chelator BAPTA-AMAntagonist 2-aminoethoxydiphenyl borateCa-ATPase inhibitor thapsigarginProximal tubule transportNa(+) reabsorptionMicroperfused in vitroMouse proximal tubuleChelator BAPTA-AMH-ATPase activityNo effectControl tubulesInhibitor thapsigarginBAPTA-AMIntracellular Ca(2Decreased transportTubule transportBaseline transportStimulates Na(+Modulate Na(+Glomerulotubular balance
2012
Regulation of glomerulotubular balance. II. Impact of angiotensin II on flow-dependent transport
Du Z, Wan L, Yan Q, Weinbaum S, Weinstein A, Wang T. Regulation of glomerulotubular balance. II. Impact of angiotensin II on flow-dependent transport. American Journal Of Physiology. Renal Physiology 2012, 303: f1507-f1516. PMID: 22952281, PMCID: PMC3532483, DOI: 10.1152/ajprenal.00277.2012.Peer-Reviewed Original ResearchMeSH KeywordsAngiotensin IIAngiotensin II Type 1 Receptor BlockersAnimalsBicarbonatesBiological TransportEnzyme InhibitorsFemaleHemostasisIn Vitro TechniquesKidney GlomerulusKidney TubulesLosartanMacrolidesMiceMice, KnockoutModels, AnimalProton-Translocating ATPasesReceptor, Angiotensin, Type 1SodiumSodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersConceptsNa(+)-H(+) exchanger 3Mouse tubulesImpact of angiotensin IIH-ATPaseMicroperfused in vitroAT(2) receptorsAT(1A) receptorFlow-mediated changesH-ATPase activityParacellular Cl(-Receptor availabilityAngiotensin IIAT(1ARegulate Na(+Increased Na(+Local angiotensinBasolateral transportJ(HCO3Mouse kidneyNet fluidInhibitor bafilomycinProtein levelsMiceReceptorsTubules
2005
Axial flow modulates proximal tubule NHE3 and H-ATPase activities by changing microvillus bending moments
Du Z, Yan Q, Duan Y, Weinbaum S, Weinstein A, Wang T. Axial flow modulates proximal tubule NHE3 and H-ATPase activities by changing microvillus bending moments. American Journal Of Physiology. Renal Physiology 2005, 290: f289-f296. PMID: 16144961, DOI: 10.1152/ajprenal.00255.2005.Peer-Reviewed Original ResearchConceptsProximal tubules in vitroHCO3- absorptionTubules in vitroBrush-border microvilliHCO3- permeabilityH(+)-ATPase inhibitor bafilomycinInhibition of NHE3Proximal tubule NHE3Transepithelial potential differenceH-ATPase activityLuminal cell membraneH(+)-ATPaseTransepithelial PDNa+ absorptionParacellular permeabilityH(+)-ATPase activityInhibitor EIPAMembrane transport activityProximal tubulesHCO3- reabsorptionNHE3HCO3- transportH-ATPaseBicarbonate transportPermeability changes
2003
Distribution and regulation of expression of serum‐ and glucocorticoid‐induced kinase‐1 in the rat kidney
de la Rosa D, Coric T, Todorovic N, Shao D, Wang T, Canessa C. Distribution and regulation of expression of serum‐ and glucocorticoid‐induced kinase‐1 in the rat kidney. The Journal Of Physiology 2003, 551: 455-466. PMID: 12816971, PMCID: PMC2343216, DOI: 10.1113/jphysiol.2003.042903.Peer-Reviewed Original ResearchMeSH KeywordsAdrenalectomyAldosteroneAnimalsAntibodiesAntibody SpecificityBlotting, NorthernBlotting, WesternCells, CulturedDNA, ComplementaryElectrophoresis, Polyacrylamide GelEpithelial CellsGene Expression Regulation, EnzymologicGlucocorticoidsImmediate-Early ProteinsImmunoblottingIn Vitro TechniquesIsoenzymesKidneyKidney TubulesMicroscopy, FluorescenceNuclear ProteinsProtein Serine-Threonine KinasesRatsRats, Sprague-DawleyRNASubcellular FractionsTransfectionConceptsGlucocorticoid-induced kinase 1Kinase 1Ion channelsRegulation of expressionConstitutive high expressionBasolateral membraneRenal epithelial cellsSubcellular localizationLevel of expressionRegulation of levelsEpithelial ion channelsSGK1 proteinMammalian kidneyApical membraneDirect interactionSGK1Epithelial cellsWestern blottingHigh expressionExpressionExpression of SGK1ProteinRat kidneyTransportersPhysiological changesRole of PKC and calcium in modulation of effects of angiotensin II on sodium transport in proximal tubule
Du Z, Ferguson W, Wang T. Role of PKC and calcium in modulation of effects of angiotensin II on sodium transport in proximal tubule. American Journal Of Physiology. Renal Physiology 2003, 284: f688-f692. PMID: 12527554, DOI: 10.1152/ajprenal.00261.2002.Peer-Reviewed Original ResearchConceptsConcentrations of Ang IIAng IIProximal tubulesFluid absorptionTMB-8Effect of luminal ANGLow concentrations of Ang IIEffects of Ang IIEffects of angiotensin IIProximal tubules in vitroProximal tubule transportProximal tubules of ratsInhibit Na(+) transportIntracellular calcium mobilizationAng II concentrationsTubules of ratsCAMP-independent mechanismConcentrations of ANGNa(+) transportTubules in vitroProximal tubular fluidIntracellular Ca(2Intracellular calciumTubule transportLuminal ANG
1993
Renal bicarbonate reabsorption in the rat. IV. Bicarbonate transport mechanisms in the early and late distal tubule.
Wang T, Malnic G, Giebisch G, Chan Y. Renal bicarbonate reabsorption in the rat. IV. Bicarbonate transport mechanisms in the early and late distal tubule. Journal Of Clinical Investigation 1993, 91: 2776-2784. PMID: 8390489, PMCID: PMC443344, DOI: 10.1172/jci116519.Peer-Reviewed Original ResearchConceptsLate distal tubuleBicarbonate absorptionDistal tubulesTubule segmentsBicarbonate transportH-ATPaseH-K-ATPase inhibitorsRate of bicarbonate absorptionEthyl-isopropylamilorideFluid absorptionNa(+)-H+ exchangeK(+)-H+ exchangeEarly distal tubuleBicarbonate transport mechanismDistal tubule segmentsRenal bicarbonate reabsorptionLow-K dietLuminal bicarbonate concentrationBicarbonate reabsorptionBicarbonate secretionBicarbonate concentrationH+ secretionMicroperfusion experimentsTubulesK diet