2010
Drosophila glia use a conserved cotransporter mechanism to regulate extracellular volume
Leiserson WM, Forbush B, Keshishian H. Drosophila glia use a conserved cotransporter mechanism to regulate extracellular volume. Glia 2010, 59: 320-332. PMID: 21125654, PMCID: PMC3005002, DOI: 10.1002/glia.21103.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsAnimals, Genetically ModifiedBlood-Nerve BarrierCells, CulturedDrosophilaDrosophila ProteinsExtracellular SpaceHumansIn Vitro TechniquesLarvaMicroscopy, Electron, TransmissionModels, BiologicalMutationNeural ConductionNeurogliaNeuronsPeripheral NervesProtein Serine-Threonine KinasesSymportersTwo-Hybrid System TechniquesConceptsHuman NKCC1Yeast two hybrid assaysExtracellular solute compositionLarvae mutantDrosophila gliaNcc69Osmotic homeostasisExtracellular volumeMolecular mechanismsNervous systemOrthologsExtracellular solutesPhysiological mechanismsBlood-brain barrierBlood-nerve barrierSimilar roleAccumulation of fluidAction potential conductionGlial cellsPeripheral neuropathyNKCC1Serious health threatDetectable impactBlood barrierGlia
2008
Na-K-Cl Cotransporter-1 in the Mechanism of Ammonia-induced Astrocyte Swelling*
Jayakumar A, Liu M, Moriyama M, Ramakrishnan R, Forbush B, Reddy P, Norenberg M. Na-K-Cl Cotransporter-1 in the Mechanism of Ammonia-induced Astrocyte Swelling*. Journal Of Biological Chemistry 2008, 283: 33874-33882. PMID: 18849345, PMCID: PMC2590687, DOI: 10.1074/jbc.m804016200.Peer-Reviewed Original ResearchConceptsNKCC activityNa-K-ClAstrocyte swellingCell swellingNa-K-Cl cotransporter-1Na-K-Cl cotransporterComplication of acute liver failureN-nitro-L-arginine methyl esterNitric oxide synthase inhibitionActivation of NKCC1NKCC1 protein expressionCultured astrocytesInduce oxidative/nitrosative stressAcute liver failureLoss of ion homeostasisSwelling of astrocytesPhosphorylated NKCC1NKCC1 expressionLiver failureNKCC1Synthase inhibitionBrain herniationBrain edemaIntracranial pressureProtein expression
1998
Mutagenic Mapping of the Na-K-Cl Cotransporter for Domains Involved in Ion Transport and Bumetanide Binding
Isenring P, Jacoby S, Chang J, Forbush B. Mutagenic Mapping of the Na-K-Cl Cotransporter for Domains Involved in Ion Transport and Bumetanide Binding. The Journal Of General Physiology 1998, 112: 549-558. PMID: 9806964, PMCID: PMC2229443, DOI: 10.1085/jgp.112.5.549.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBinding SitesBumetanideCarrier ProteinsCells, CulturedChloridesDiureticsHumansKidneyKineticsMutagenesis, Site-DirectedOligonucleotide ProbesPotassiumProtein Structure, TertiaryRecombinant Fusion ProteinsRubidium RadioisotopesSharksSodiumSodium-Potassium-Chloride SymportersSpecies Specificity
1988
Rapid release of 45Ca from an occluded state of the Na,K-pump.
Forbush B. Rapid release of 45Ca from an occluded state of the Na,K-pump. Journal Of Biological Chemistry 1988, 263: 7970-7978. PMID: 2836404, DOI: 10.1016/s0021-9258(18)68429-7.Peer-Reviewed Original ResearchConceptsNa,K-pumpNa,K-ATPaseK-pumpK-ATPasePhosphorylation of Na,K-ATPaseRelease of 45CaExposure to K+Release of 86RbApparent affinityCa2+Transport sitesK+ congenerMg2+ + ATPIntracellular faceRelease of K+Simultaneous occlusionExtracellular sitesPrevent phosphorylationCa2Exposure to Mg2Extracellular faceReleaseAbsence of PiN-methylglucamineIntracellular mediumThe interaction of amines with the occluded state of the Na,K-pump.
Forbush B. The interaction of amines with the occluded state of the Na,K-pump. Journal Of Biological Chemistry 1988, 263: 7979-7988. PMID: 2836405, DOI: 10.1016/s0021-9258(18)68430-3.Peer-Reviewed Original ResearchConceptsRelease of 86RbInteraction of aminesPresence of aminesNa,K-pumpIntracellular faceDog kidney NaK-pumpK-ATPaseEffect of aminesBenzyl amineBifunctional aminesBlock releaseKidney NaOcclusionOrganic cationsPre-incubationAminesAmine blocksTransport sitesPresence of ATPK+ siteCompetitive mannerLow affinityOccluded state