2013
Identification of Functionally Distinct Na-HCO3 Co-Transporters in Colon
Barmeyer C, Ye JH, Soroka C, Geibel P, Hingsammer LM, Weitgasser L, Atway D, Geibel JP, Binder HJ, Rajendran VM. Identification of Functionally Distinct Na-HCO3 Co-Transporters in Colon. PLOS ONE 2013, 8: e62864. PMID: 23690961, PMCID: PMC3653958, DOI: 10.1371/journal.pone.0062864.Peer-Reviewed Original ResearchConceptsNa-HCO3 cotransportDistal colonProximal colonNBC activityNBC isoformsRat colonColonic epithelial cellsCrypt glandsSensitive transporterHCO3- secretionColonHCO3-dependent mechanismEpithelial cellsSaturable processHOE694Isoform 1Basolateral membraneCotransportPCR analysisNorthern blotDIDSMolecular studiesMolecular identityApparent KiCritical role
1999
Colonic H-K-ATPase β-subunit: identification in apical membranes and regulation by dietary K depletion
Sangan P, Kolla S, Rajendran V, Kashgarian M, Binder H. Colonic H-K-ATPase β-subunit: identification in apical membranes and regulation by dietary K depletion. American Journal Of Physiology 1999, 276: c350-c360. PMID: 9950762, DOI: 10.1152/ajpcell.1999.276.2.c350.Peer-Reviewed Original ResearchDifferential regulation of NHE isoforms by sodium depletion in proximal and distal segments of rat colon
Ikuma M, Kashgarian M, Binder H, Rajendran V. Differential regulation of NHE isoforms by sodium depletion in proximal and distal segments of rat colon. American Journal Of Physiology 1999, 276: g539-g549. PMID: 9950829, DOI: 10.1152/ajpgi.1999.276.2.g539.Peer-Reviewed Original ResearchConceptsDietary sodium depletionSodium depletionDistal colonRat colonProtein expressionMRNA abundanceBlot analysisDose-dependent inhibitorApical membrane vesiclesElectroneutral NaCl absorptionWestern blot analysisDifferential regulationNormal ratsProximal colonHOE 694Multiple diverse effectsColonDistal segmentsNaCl absorptionNHE isoformsExchange activityExchanger isoformsNorthern blot analysisDifferential effectsPretranslational level
1997
Regulation of colonic H-K-ATPase in large intestine and kidney by dietary Na depletion and dietary K depletion
Sangan P, Rajendran V, Mann A, Kashgarian M, Binder H. Regulation of colonic H-K-ATPase in large intestine and kidney by dietary Na depletion and dietary K depletion. American Journal Of Physiology 1997, 272: c685-c696. PMID: 9124313, DOI: 10.1152/ajpcell.1997.272.2.c685.Peer-Reviewed Original ResearchConceptsDietary K depletionDistal colonNA depletionK-ATPase activityProximal colonLarge intestineRat distal colonActive K absorptionK-ATPaseRenal collecting ductsDietary NaK-ATPase expressionK-ATPase isoformsK depletionRat colonCollecting ductsOuter medullaColonProtein expressionProtein levelsKidneyPolyclonal antibodiesIntestineDuctMRNA
1991
Apical membrane localization of ouabain-sensitive K(+)-activated ATPase activities in rat distal colon
Del Castillo J, Rajendran V, Binder H. Apical membrane localization of ouabain-sensitive K(+)-activated ATPase activities in rat distal colon. American Journal Of Physiology 1991, 261: g1005-g1011. PMID: 1837421, DOI: 10.1152/ajpgi.1991.261.6.g1005.Peer-Reviewed Original ResearchConceptsRat distal colonOuabain-insensitive fractionDistal colonOuabain-sensitive fractionOuabain-insensitive componentHalf-maximal concentrationApical membraneATPase activityColonic mucosaProximal colonColonActivation curveAbsorptive processesAdenosinetriphosphatase activityApical membrane localizationBasolateral membraneHomogenatesN-ethylmaleimideMucosaActivityOmeprazole
1990
Aldosterone and glucocorticoid receptor-specific agonists regulate ion transport in rat proximal colon
Turnamian S, Binder H. Aldosterone and glucocorticoid receptor-specific agonists regulate ion transport in rat proximal colon. American Journal Of Physiology 1990, 258: g492-g498. PMID: 2138421, DOI: 10.1152/ajpgi.1990.258.3.g492.Peer-Reviewed Original ResearchConceptsDietary sodium depletionBody wt-1RU 28362Receptor-specific agonistsSodium depletionPotassium secretionProximal colonDay 1Glucocorticoid receptorWT-1Cl absorptionAdministration of spironolactoneActive potassium secretionRat proximal colonSecondary hyperaldosteronismContinuous infusionAldosteroneGlucocorticoid agonistAgonistsElectrolyte transportSecretionStimulationSignificant increaseInfusionColon
1986
Ion transport in proximal colon of the rat. Sodium depletion stimulates neutral sodium chloride absorption.
Foster E, Budinger M, Hayslett J, Binder H. Ion transport in proximal colon of the rat. Sodium depletion stimulates neutral sodium chloride absorption. Journal Of Clinical Investigation 1986, 77: 228-235. PMID: 2418060, PMCID: PMC423331, DOI: 10.1172/jci112281.Peer-Reviewed Original ResearchMeSH Keywords4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic Acid4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAcetazolamideAmilorideAnimalsBiological Transport, ActiveColonHyperaldosteronismIntestinal AbsorptionIntestinal MucosaIon ChannelsMaleRatsRats, Inbred StrainsSodium ChlorideTheophyllineConceptsMu eq/hSodium-hydrogen exchangeProximal colonSodium depletionSodium absorptionDistal colonNeutral sodium chloride absorptionDistal segmentsAmiloride-sensitive sodium absorptionNet sodium absorptionSodium-depleted ratsRat distal colonSodium chloride absorptionNeutral sodium absorptionHydrogen ion secretionSecondary hyperaldosteronismParallel fallRat colonControl groupMM amilorideMucosal amilorideJNanetColonIon secretionChloride absorption
1985
Evidence that aldosterone influences transport in target tissues by dissimilar mechanisms
Hirsch D, Pace P, Binder H, Hayslett J. Evidence that aldosterone influences transport in target tissues by dissimilar mechanisms. American Journal Of Physiology 1985, 248: f507-f512. PMID: 3985157, DOI: 10.1152/ajprenal.1985.248.4.f507.Peer-Reviewed Original ResearchConceptsProximal colonDistal colonSodium absorptionEffects of hyperaldosteronismSodium-free dietTarget tissuesAction of aldosteroneNet sodium absorptionRat proximal colonTransmural potential differenceAldosterone influencesHormone-induced changesSecondary hyperaldosteronismPotassium secretionControl animalsNet sodiumColonExperimental animalsHyperaldosteronismAldosteroneSodium transportProximal portionElectrolyte transportMicroA xTissue