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. I. Impact of dopamine on flow-dependent transport
Du Z, Yan Q, Wan L, Weinbaum S, Weinstein A, Wang T. Regulation of glomerulotubular balance. I. Impact of dopamine on flow-dependent transport. American Journal Of Physiology. Renal Physiology 2012, 303: f386-f395. PMID: 22552936, PMCID: PMC3433864, DOI: 10.1152/ajprenal.00531.2011.Peer-Reviewed Original ResearchMeSH Keywords8-Bromo Cyclic Adenosine MonophosphateAlgorithmsAnimalsBenzazepinesBicarbonatesBiological Transport, ActiveChloridesCyclic AMP-Dependent Protein KinasesDopamineDopamine AntagonistsDopamine D2 Receptor AntagonistsFemaleIsoquinolinesKidney GlomerulusKidney TubulesKidney Tubules, ProximalMacrolidesMiceMicrovilliProton-Translocating ATPasesReceptors, Dopamine D1SodiumSulfonamidesSulpirideConceptsNa/H exchanger 3Impact of dopamineNa(+) transportNa-K-ATPase activityResponse to volume expansionProximal tubules in vitroCl(-) reabsorptionPKA-mediated mechanismMicroperfused in vitroEffects of exogenous dopamineMouse proximal tubuleNa-K-ATPaseProximal tubule reabsorptionStimulation of Cl(-PKA inhibitor H89Luminal flowH-ATPase activityTubules in vitroLuminal flow rateNHE3 activityDA1 receptorsNa/H exchangeTubule reabsorptionProximal tubulesInhibitor H89
2010
Shear stress-induced changes of membrane transporter localization and expression in mouse proximal tubule cells
Duan Y, Weinstein A, Weinbaum S, Wang T. Shear stress-induced changes of membrane transporter localization and expression in mouse proximal tubule cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 2010, 107: 21860-21865. PMID: 21106755, PMCID: PMC3003103, DOI: 10.1073/pnas.1015751107.Peer-Reviewed Original ResearchConceptsProximal tubule cellsMouse proximal tubuleNa/K-ATPaseTubule cellsApical NHE3Proximal tubulesMouse proximal tubule cellsFSS-induced changesApical plasma membraneV-ATPaseAmount of protein expressionBasolateral membraneWestern blot analysisNHE3Volume reabsorptionTransporter expressionBasolateral transportProtein expressionMPT cellsShear stress-induced changesVacuolar H(+)-ATPaseBlock microtubule polymerizationControl cellsModulate cellular functionsTransporter localizationROLE OF DOPAMINE IN MODULATING FLOW‐DEPENDENT SODIUM AND BICARBONATE TRANSPORT IN MOUSE PROXIMAL TUBULE
Du Z, Yan Q, Weinbaum S, Weinstein A, Wang T. ROLE OF DOPAMINE IN MODULATING FLOW‐DEPENDENT SODIUM AND BICARBONATE TRANSPORT IN MOUSE PROXIMAL TUBULE. The FASEB Journal 2010, 24: 1024.2-1024.2. DOI: 10.1096/fasebj.24.1_supplement.1024.2.Peer-Reviewed Original ResearchProximal tubule transportEffects of dopamineMouse proximal tubuleTubule transportProximal tubulesNHE3 endocytosisCAMP-dependent protein kinase inhibitor H89PKA-mediated mechanismMicroperfused in vitroProtein kinase inhibitor H89Kidney proximal tubulesReabsorption of fluidLuminal flow rateKinase inhibitor H89Sodium reabsorptionApical membraneHCO-3 absorptionInhibitor H89DopaminePerfusion rateTubulesSCH23390NHE3Net reabsorptionSulpiride
2007
Flow-dependent transport in a mathematical model of rat proximal tubule
Weinstein A, Weinbaum S, Duan Y, Du Z, Yan Q, Wang T. Flow-dependent transport in a mathematical model of rat proximal tubule. American Journal Of Physiology. Renal Physiology 2007, 292: f1164-f1181. PMID: 17213461, DOI: 10.1152/ajprenal.00392.2006.Peer-Reviewed Original ResearchConceptsNa(+) reabsorptionRat proximal tubulesProximal tubulesModel tubuleDiuretic effectMouse proximal tubuleLuminal perfusion rateLow flowsSolute transportNaCl reabsorptionPeritubular transportTranscellular NaCl reabsorptionCarbonic anhydrase inhibitionGlomerulotubular balanceTubulesReabsorptionTransporter densityLuminal flowModel calculationsRatsFlow-dependent transportTransporter insertionMathematical modelPerfusion rateRate of hydration