2005
HSP70 binding modulates detachment of Na-K-ATPase following energy deprivation in renal epithelial cells
Riordan M, Sreedharan R, Wang S, Thulin G, Mann A, Stankewich M, Van Why S, Kashgarian M, Siegel NJ. HSP70 binding modulates detachment of Na-K-ATPase following energy deprivation in renal epithelial cells. American Journal Of Physiology. Renal Physiology 2005, 288: f1236-f1242. PMID: 15701813, DOI: 10.1152/ajprenal.00438.2004.Peer-Reviewed Original ResearchConceptsRenal epithelial cellsATP depletionMolecular chaperone Hsp70Binding of Hsp70Na-K-ATPaseFundamental cellular mechanismsRenal epithelial polarityCultured renal epithelial cellsEpithelial cellsHeat shock protein 70Protein clathrinEpithelial polarityMolecular chaperonesOverexpression of HSP70Chaperone Hsp70Shock protein 70Energy deprivationLLC-PK1 cellsStress proteinsMolecular mechanismsHSP bindingHSP70Cell lysatesCellular mechanismsATP turnover
1999
Thresholds for cellular disruption and activation of the stress response in renal epithelia
van Why S, Kim S, Geibel J, Seebach F, Kashgarian M, Siegel N. Thresholds for cellular disruption and activation of the stress response in renal epithelia. American Journal Of Physiology 1999, 277: f227-f234. PMID: 10444577, DOI: 10.1152/ajprenal.1999.277.2.f227.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsCalciumCysteine EndopeptidasesDetergentsDifferential ThresholdDNA-Binding ProteinsEpithelial CellsHeat Shock Transcription FactorsHeat-Shock ProteinsIntracellular MembranesKidneyL-Lactate DehydrogenaseLLC-PK1 CellsMultienzyme ComplexesOctoxynolProteasome Endopeptidase ComplexSodium-Potassium-Exchanging ATPaseSolubilityStress, PhysiologicalSwineTranscription FactorsConceptsATP depletionRenal epitheliumLactate dehydrogenase releaseCellular ATPReduction of ATPRenal ischemiaIntracellular calciumActivation of HSF1Heat shock transcription factorDehydrogenase releaseControl ATPStress responseControl levelsProgressive accumulationProteasome inhibitionAdaptive inductionHSF activationRapid fallActivationEpitheliumIncremental increaseCellular disruptionResponseATPIschemia
1998
ATP releases HSP-72 from protein aggregates after renal ischemia
Aufricht C, Lu E, Thulin G, Kashgarian M, Siegel N, Van Why S. ATP releases HSP-72 from protein aggregates after renal ischemia. American Journal Of Physiology 1998, 274: f268-f274. PMID: 9486221, DOI: 10.1152/ajprenal.1998.274.2.f268.Peer-Reviewed Original Research
1994
Activation of heat-shock transcription factor by graded reductions in renal ATP, in vivo, in the rat.
Van Why S, Mann A, Thulin G, Zhu X, Kashgarian M, Siegel N. Activation of heat-shock transcription factor by graded reductions in renal ATP, in vivo, in the rat. Journal Of Clinical Investigation 1994, 94: 1518-1523. PMID: 7929828, PMCID: PMC295298, DOI: 10.1172/jci117492.Peer-Reviewed Original ResearchConceptsRenal cortexHsp-70 mRNA inductionCortical ATP levelsRenal ischemia resultsPartial aortic occlusionActivation of HSFATP levelsCellular ATPHSF activationHSP-70 mRNAReduction of ATPAortic occlusionPreocclusion levelsProfound fallTotal occlusionIschemia resultsPreocclusion valuesHeat shock transcription factorLow-level expressionMetabolic consequencesVivo 31P NMR spectroscopyControl valuesHSP-70Vigorous responseRenal ATPImmature Renal Tubules Are Resistant to Prolonged Anoxia
Gaudio K, Thulin G, Ardito T, Kashgarian M, Siegel N. Immature Renal Tubules Are Resistant to Prolonged Anoxia. Pediatric Research 1994, 35: 152-156. PMID: 8165048, DOI: 10.1203/00006450-199402000-00005.Peer-Reviewed Original ResearchAdenosine TriphosphateAnimalsDNAHypoxiaIn Vitro TechniquesKidney Tubules, ProximalL-Lactate DehydrogenaseRats
1991
Redistribution of cellular energy following renal ischemia
Gaudio K, Thulin G, Ardito T, Kashgarian M, Siegel N. Redistribution of cellular energy following renal ischemia. Pediatric Nephrology 1991, 5: 591-596. PMID: 1911145, DOI: 10.1007/bf00856647.Peer-Reviewed Original Research
1989
Metabolic alterations in proximal tubule suspensions obtained from ischemic kidneys
Gaudio K, Thulin G, Ardito T, Kashgarian M, Siegel N. Metabolic alterations in proximal tubule suspensions obtained from ischemic kidneys. American Journal Of Physiology 1989, 257: f383-f389. PMID: 2551186, DOI: 10.1152/ajprenal.1989.257.3.f383.Peer-Reviewed Original ResearchConceptsProximal tubule suspensionsIschemic injuryTubule suspensionsRenal artery ischemiaVivo ischemic injurySprague-Dawley ratsMin of reflowOxygen consumptionPresence of ouabainBasal O2 consumptionArtery ischemiaIschemic kidneyHistopathological appearanceMetabolic alterationsProximal tubulesControl levelsProtein 1
1988
Metabolic and functional consequences of inhibiting adenosine deaminase during renal ischemia in rats.
Stromski M, van Waarde A, Avison M, Thulin G, Gaudio K, Kashgarian M, Shulman R, Siegel N. Metabolic and functional consequences of inhibiting adenosine deaminase during renal ischemia in rats. Journal Of Clinical Investigation 1988, 82: 1694-1699. PMID: 3263396, PMCID: PMC442739, DOI: 10.1172/jci113782.Peer-Reviewed Original ResearchConceptsPostischemic restorationFunctional recoveryBilateral renal artery occlusionAdenosine deaminaseResidual nucleotide poolRenal artery occlusionEnd of ischemiaMin of ischemiaMin of reflowArtery occlusionAdenine nucleotide poolPostischemic recoveryRenal ischemiaNucleotide poolIschemia resultsUntreated animalsDegradation of ATPIschemiaBasal levelsRenal ATPATP levelsInitial recoveryRatsInsultFunctional consequencesBeneficial effect of thyroxin in the treatment of ischemic acute renal failure
Sutter P, Thulin G, Stromski M, Ardito T, Gaudio K, Kashgarian M, Siegel N. Beneficial effect of thyroxin in the treatment of ischemic acute renal failure. Pediatric Nephrology 1988, 2: 1-7. PMID: 2856365, DOI: 10.1007/bf00870370.Peer-Reviewed Original ResearchMeSH KeywordsAcute Kidney InjuryAdenosine TriphosphateAnimalsIschemiaKidneyMaleRatsRats, Inbred StrainsSodium-Potassium-Exchanging ATPaseThyroxineTime FactorsConceptsAcute renal failureIschemic acute renal failureRenal failureIschemic controlsNormal salineSaline-treated ischemic controlsBeneficial effectsBetter kidney functionDose of T4Min of reflowT4-treated ratsEffect of thyroxinRenal functionKidney functionNS animalsRenal ischemiaInulin clearanceSaline controlsDay 3Day 7IschemiaT4 animalsRenal ATPCellular mechanismsSignificant increase
1986
Postischemic hemodynamics and recovery of renal adenosine triphosphate
Gaudio K, Stromski M, Thulin G, Ardito T, Kashgarian M, Siegel N. Postischemic hemodynamics and recovery of renal adenosine triphosphate. American Journal Of Physiology 1986, 251: f603-f609. PMID: 3490185, DOI: 10.1152/ajprenal.1986.251.4.f603.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsDopamineHemodynamicsIschemiaKidneyMaleRatsRats, Inbred StrainsRenal CirculationConceptsRenal blood flowIschemic acute renal injuryImportant pathophysiological componentRenal ATP levelsAcute renal injuryInfusion of dopamineSaline-treated ratsPostischemic enhancementRenal adenosineRenal vasoconstrictionRenal injuryTubular functionPathophysiological componentPostischemic infusionInulin clearanceATP-MgCl2Vasoactive compoundsTubular epitheliumBlood flowPharmacological agentsPostischemic hemodynamicsTubular cellsSaline ratsEnhances recoveryRats
1983
Accelerated cellular recovery after an ischemic renal injury.
Gaudio K, Ardito T, Reilly H, Kashgarian M, Siegel N. Accelerated cellular recovery after an ischemic renal injury. American Journal Of Pathology 1983, 112: 338-46. PMID: 6604459, PMCID: PMC1916386.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsHorseradish PeroxidaseInulinIschemiaKidneyKidney Tubules, ProximalMaleNecrosisPressureRatsRats, Inbred StrainsConceptsProximal tubular pressureCellular morphologic featuresRenal ischemiaATP-MgCl2Back leakTubular integrityMorphologic featuresCellular damageIschemic cellular damageProgressive ischemic injurySevere ischemic damageIschemic renal injurySaline-treated ratsGroups of ratsEarly regenerative changesRenal injuryIschemic damageIschemic injuryIschemic alterationsNormal salineRegenerative changesSaline ratsEnhances recoverySalutary effectsHistomorphometric analysis
1982
Accelerated recovery of single nephron function by the postischemic infusion of ATP-MgCl2
Gaudio K, Taylor M, Chaudry I, Kashgarian M, Siegel N. Accelerated recovery of single nephron function by the postischemic infusion of ATP-MgCl2. Kidney International 1982, 22: 13-20. PMID: 7120752, DOI: 10.1038/ki.1982.126.Peer-Reviewed Original ResearchConceptsClearance of inulinSingle nephron functionATP-MgCl2Proximal tubular pressureNephron functionTubular pressureBeneficial effectsRenal artery ischemiaSaline-treated animalsSaline-treated ratsCourse of recoveryGroups of animalsPostischemic administrationArtery ischemiaPattern of recoveryCIN 1Postischemic infusionInitial insultInulin clearanceInitial improvementControl animalsMost epithelial cellsEnhanced recoveryWhole kidneyTubular fluid
1980
Enhanced recovery from acute renal failure by the postischemic infusion of adenine nucleotides and magnesium chloride in rats
Siegel N, Glazier W, Chaudry I, Gaudio K, Lytton B, Baue A, Kashgarian M. Enhanced recovery from acute renal failure by the postischemic infusion of adenine nucleotides and magnesium chloride in rats. Kidney International 1980, 17: 338-349. PMID: 7401453, DOI: 10.1038/ki.1980.39.Peer-Reviewed Original ResearchConceptsAcute renal failureRenal injuryRenal failureAcute renal injuryIschemic renal injuryAdenine nucleotidesFocal cellular necrosisElevated FENaRenal insultIschemic kidneyIschemic periodTubular functionAcute insultNonischemic kidneysPostischemic infusionFunctional impairmentTubular cellsDegree of improvementCellular necrosisRatsInfusionCINUltrastructural changesUltrastructural studyFENa
1978
Enhanced recovery from severe ischemic renal injury with adenosine triphosphate-magnesium chloride: administration after the insult.
Glazier W, Chaudry I, Siegel N, Kashgarian M, Lytton B, Baue A. Enhanced recovery from severe ischemic renal injury with adenosine triphosphate-magnesium chloride: administration after the insult. Journal Of The American College Of Surgeons 1978, 29: 82-4. PMID: 401294.Peer-Reviewed Original Research