2009
The Phytostilbene Resveratrol Induces Apoptosis in INS-1E Rat Insulinoma Cells
Bortolotti C, Kunit T, Moder A, Hufnagl C, Schmidt S, Hartl A, Langelueddecke C, Fürst J, Geibel J, Ritter M, Jakab M. The Phytostilbene Resveratrol Induces Apoptosis in INS-1E Rat Insulinoma Cells. Cellular Physiology And Biochemistry 2009, 23: 245-254. PMID: 19471092, DOI: 10.1159/000218171.Peer-Reviewed Original ResearchConceptsINS-1E rat insulinoma cellsINS-1E cellsApoptotic volume decreaseRat insulinoma cellsAkt phosphorylationInsulinoma cellsCell proliferationProapoptotic effectsInhibitor compound CBasal Akt phosphorylationExposure of phosphatidylserineInduction of apoptosisG0/G1 phaseCaspase activationPlasma membraneOuter leafletCompound CMuM resveratrolG1 phaseCrystal violet stainingApoptotic cellsCell granularityAddition of insulinPhosphorylationMajor target
2003
Intracellular pH Activates Membrane-Bound Na+/H+ Exchanger and Vacuolar H+-ATPase in Human Embryonic Kidney (HEK) Cells
Lang K, Wagner C, Haddad G, Burnekova O, Geibel J. Intracellular pH Activates Membrane-Bound Na+/H+ Exchanger and Vacuolar H+-ATPase in Human Embryonic Kidney (HEK) Cells. Cellular Physiology And Biochemistry 2003, 13: 257-262. PMID: 14586169, DOI: 10.1159/000074540.Peer-Reviewed Original ResearchConceptsMicroM EIPAIntracellular acidificationFree bath solutionProximal tubule cellsInfluence of intracellularWestern blot analysisTime-dependent mannerTubule cellsHuman embryonic kidney cellsHEK-293 cellsExtruding mechanismHuman embryonic kidney cell line HEK-293NHE3 proteinEmbryonic kidney cellsCell line HEK-293Cytosolic pHKidney cellsBlot analysisAbsence of bicarbonateHEK293 cellsBath solutionEIPAPresent studyActivationCells
2001
Cloning and Expression of a Chloride-dependent Na+-H+ Exchanger*
Sangan P, Rajendran VM, Geibel JP, Binder HJ. Cloning and Expression of a Chloride-dependent Na+-H+ Exchanger*. Journal Of Biological Chemistry 2001, 277: 9668-9675. PMID: 11773056, DOI: 10.1074/jbc.m110852200.Peer-Reviewed Original ResearchMeSH KeywordsAmilorideAmino Acid SequenceAnimalsBlotting, NorthernCell LineChlorineCloning, MolecularColonDiureticsDNA, ComplementaryFibroblastsHydrogen-Ion ConcentrationIn Situ HybridizationMaleMolecular Sequence DataPhosphorylationProtein Structure, TertiaryRatsRats, Sprague-DawleyRNA, MessengerSequence Homology, Amino AcidSodiumSodium-Hydrogen Exchanger 1Sodium-Hydrogen ExchangersTime FactorsTissue DistributionConceptsRat distal colonDistal colonAmino acidsCrypt cellsExchange isoformsDietary sodium depletionColonic crypt cellsFull-length cDNACl- channel blockerColonic epithelial cellsN-terminal regionNorthern blot analysisSodium depletionChannel blockersNovel C-terminusPutative transmembranePS120 fibroblastsAcid loadDependent intracellularC-terminusNHE-1Epithelial cellsIsoform inhibitorAmiloride analoguesMultiple tissues
1999
Continuous detection of extracellular ATP on living cells by using atomic force microscopy
Schneider S, Egan M, Jena B, Guggino W, Oberleithner H, Geibel J. Continuous detection of extracellular ATP on living cells by using atomic force microscopy. Proceedings Of The National Academy Of Sciences Of The United States Of America 1999, 96: 12180-12185. PMID: 10518596, PMCID: PMC18432, DOI: 10.1073/pnas.96.21.12180.Peer-Reviewed Original ResearchConceptsAtomic force microscopyForce microscopyLiving cellsImportant compoundsSurface of cellsATP concentrationSurface microenvironmentScanning tipExtracellular ATPCell linesMicroscopyPhysiological conditionsPowerful techniqueCellsContinuous detectionBiosensorSurfaceCompoundsActive tipATPConcentrationFuture developmentSoftnessDetectionMicroenvironment
1994
The Mastomys Gastric Carcinoid: Aspects of Enterochromaff in-Like Cell Function
Modlin I, Lawton G, Tang L, Geibel J, Abraham R, Darr U. The Mastomys Gastric Carcinoid: Aspects of Enterochromaff in-Like Cell Function. Digestion 1994, 55: 31-37. PMID: 7535269, DOI: 10.1159/000201199.Peer-Reviewed Original ResearchConceptsECL cellsHistamine-1 receptor antagonistsGastric carcinoid tumorsCalcium-dependent mechanismBeta-adrenergic stimulationCarcinoid tumorsGastric carcinoidsReceptor antagonistHistamine secretionTumor growthLike cell functionCell functionGenetic propensitySecretionRegulation of growthMastomys rodentsCarcinoidsCellsMuscarinicPharmacotherapySomatostatinAntagonistTumorsHistamine