2018
Potassium conservation is impaired in mice with reduced renal expression of Kir4.1
Malik S, Lambert E, Zhang J, Wang T, Clark H, Cypress M, Goldman B, Porter GA, Pena S, Nino W, Gray D. Potassium conservation is impaired in mice with reduced renal expression of Kir4.1. American Journal Of Physiology. Renal Physiology 2018, 315: f1271-f1282. PMID: 30110571, PMCID: PMC6293297, DOI: 10.1152/ajprenal.00022.2018.Peer-Reviewed Original ResearchMeSH KeywordsAlkalosisAnimalsAquaporin 3Gene Knockdown TechniquesGenotypeHypercalcemiaHyperkalemiaHypernatremiaKidney Concentrating AbilityMice, Inbred C57BLMice, KnockoutNephronsPhenotypePhosphorylationPotassium Channels, Inwardly RectifyingPotassium, DietaryRenal ReabsorptionSolute Carrier Family 12, Member 3ConceptsMg-free dietSevere urinary concentrating defectReduced renal expressionRenal K wastingSeSAME/EAST syndromeDistal convoluted tubuleKir4.1 protein expressionWild-type miceUrinary concentrating defectCre-LoxP methodologyAquaporin 3 expressionRelative hypercalcemiaRenal expressionPotassium conservationMetabolic alkalosisNCC expressionChannel Kir4.1Distal nephronKnockout miceConvoluted tubulesCotransporter expressionEAST syndromeHypokalemiaMiceReduced expression
2017
Regulation of glomerulotubular balance: flow-activated proximal tubule function
Wang T, Weinbaum S, Weinstein A. Regulation of glomerulotubular balance: flow-activated proximal tubule function. Pflügers Archiv - European Journal Of Physiology 2017, 469: 643-654. PMID: 28271233, PMCID: PMC6162058, DOI: 10.1007/s00424-017-1960-8.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsGlomerular Filtration RateHumansKidney Tubules, ProximalRenal ReabsorptionSodium-Hydrogen Exchanger 3Sodium-Potassium-Exchanging ATPaseConceptsNa/H exchanger isoform 3Proximal tubulesTubule functionIntracellular Ca2+ signalingProximal tubule transportMammalian proximal tubuleAcid-base transportersProximal tubule functionRegulation of sodiumCa2+ signalingHCO3- absorptionStimulate Na+Tubule transportMicropuncture studiesSolute reabsorptionPeritubular membraneBrush border membraneBrush border microvilliGlomerulotubular balanceHCO3- transportIsoform 3Flow velocity changesTubulesRegulatory mechanismsTransporter availability
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