2006
The connecting tubule is the main site of the furosemide-induced urinary acidification by the vacuolar H+-ATPase
Kovacikova J, Winter C, Loffing-Cueni D, Loffing J, Finberg K, Lifton R, Hummler E, Rossier B, Wagner C. The connecting tubule is the main site of the furosemide-induced urinary acidification by the vacuolar H+-ATPase. Kidney International 2006, 70: 1706-1716. PMID: 16985514, DOI: 10.1038/sj.ki.5001851.Peer-Reviewed Original ResearchMeSH KeywordsAcid-Base EquilibriumAmilorideAnimalsDiureticsEpithelial Sodium ChannelsFurosemideGene Expression RegulationGene Expression Regulation, EnzymologicHydrochlorothiazideHydrogen-Ion ConcentrationKidney Tubules, CollectingKidney Tubules, DistalMetabolic Clearance RateMiceMice, KnockoutNephronsProton-Translocating ATPasesWater-Electrolyte BalanceConceptsUrinary acidificationRenal clearance experimentsEffect of furosemideNormal urinary acidificationLumen-negative voltageNet acid excretionThick ascending limbFinal urinary acidificationKidney-specific inactivationENaC channelsClearance experimentsAcid excretionMouse modelAscending limbFurosemideDuct cellsProton secretionMiceExact localizationReabsorptionMain siteB1 subunitAlpha subunitTubulesFunctional expression
2005
The B1-subunit of the H+ ATPase is required for maximal urinary acidification
Finberg KE, Wagner CA, Bailey MA, Păunescu T, Breton S, Brown D, Giebisch G, Geibel JP, Lifton RP. The B1-subunit of the H+ ATPase is required for maximal urinary acidification. Proceedings Of The National Academy Of Sciences Of The United States Of America 2005, 102: 13616-13621. PMID: 16174750, PMCID: PMC1224669, DOI: 10.1073/pnas.0506769102.Peer-Reviewed Original ResearchConceptsMaximal urinary acidificationNormal urinary acidificationMetabolic acidosisUrinary acidificationDistal renal tubular acidosisAcid challengeRenal tubular acidosisAcute intracellular acidificationB1 subunitLumen-negative potentialFurosemide infusionTubular acidosisAlkaline urineDistal nephronGreater severityAcidosisMiceLoss of B1Intracellular acidificationApical expressionUrineDuctFurther decreaseIsoformsPlasma membrane
2003
Mice lacking the B1 subunit of H+-ATPase have normal hearing
Dou H, Finberg K, Cardell EL, Lifton R, Choo D. Mice lacking the B1 subunit of H+-ATPase have normal hearing. Hearing Research 2003, 180: 76-84. PMID: 12782355, DOI: 10.1016/s0378-5955(03)00108-4.Peer-Reviewed Original ResearchMeSH KeywordsAcoustic StimulationAnimalsAnimals, NewbornAuditory ThresholdCochleaEar, InnerEmbryo, MammalianEmbryonic and Fetal DevelopmentEvoked Potentials, Auditory, Brain StemFemaleHearingIn Situ HybridizationMaleMiceMice, KnockoutProtein SubunitsTissue DistributionVacuolar Proton-Translocating ATPasesConceptsNormal inner ear functionInner ear functionMouse inner earInner earEar functionNormal hearingAuditory brainstem response testAutosomal recessive distal renal tubular acidosisSubunit null mutant miceDistal renal tubular acidosisInner ear developmentNormal inner ear developmentRecessive distal renal tubular acidosisRenal tubular acidosisSensorineural hearing lossB1 subunitNull mutant miceAcid-base homeostasisPhysiologic assessmentTubular acidosisClinical dataHearing lossPhysiologic effectsDuct epitheliumATPase B1 subunit
1999
Mutations in the gene encoding B1 subunit of H+-ATPase cause renal tubular acidosis with sensorineural deafness
Karet F, Finberg K, Nelson R, Nayir A, Mocan H, Sanjad S, Rodriguez-Soriano J, Santos F, Cremers C, Pietro A, Hoffbrand B, Winiarski J, Bakkaloglu A, Ozen S, Dusunsel R, Goodyer P, Hulton S, Wu D, Skvorak A, Morton C, Cunningham M, Jha V, Lifton R. Mutations in the gene encoding B1 subunit of H+-ATPase cause renal tubular acidosis with sensorineural deafness. Nature Genetics 1999, 21: 84-90. PMID: 9916796, DOI: 10.1038/5022.Peer-Reviewed Original ResearchConceptsRenal tubular acidosisTubular acidosisAcid secretionDistal renal tubular acidosisSensorineural hearing lossRenal acid secretionNormal auditory functionActive proton secretionMetabolic acidosisATP6B1Hearing lossAuditory functionSensorineural deafnessEndolymphatic sacApical proton pumpAcidosisSecretionProton secretionB subunitB1 subunitHuman diseasesMutationsPatientsDiseasePH homeostasis