1992
Mechanism of detection of acute cerebral ischemia in rats by diffusion-weighted magnetic resonance microscopy.
Benveniste H, Hedlund L, Johnson G. Mechanism of detection of acute cerebral ischemia in rats by diffusion-weighted magnetic resonance microscopy. Stroke 1992, 23: 746-754. PMID: 1374575, DOI: 10.1161/01.str.23.5.746.Peer-Reviewed Original ResearchConceptsAcute cerebral ischemiaCerebral ischemiaApparent diffusion coefficientOuabain exposureDiffusion-weighted magnetic resonance microscopyApparent diffusion coefficient reductionRight middle cerebral arteryIpsilateral common carotid arteryN-methyl-D-aspartate exposureFocal cerebral ischemiaMiddle cerebral arteryCommon carotid arteryApparent diffusion coefficient (ADC) valuesRat brain tissueTissue apparent diffusion coefficientCerebral arteryMicrodialysis membraneGlutamate exposureCorpus striatumOlfactory cortexCarotid arterySprague-DawleyBrain tissueIschemiaArtery
1991
MR imaging of microcirculation in rat brain: Correlation with carbon dioxide‐induced changes in blood flow
Maki J, Benveniste H, Macfall J, Piantadosi C, Johnson G. MR imaging of microcirculation in rat brain: Correlation with carbon dioxide‐induced changes in blood flow. Journal Of Magnetic Resonance Imaging 1991, 1: 673-681. PMID: 1823172, DOI: 10.1002/jmri.1880010609.Peer-Reviewed Original ResearchConceptsCerebral blood flowRat cerebral blood flowBlood flowArterial carbon dioxide pressureLaser Doppler flowmetry studyMR imaging studiesMagnetic resonance imaging techniquesRat brainLDF valuesCarbon dioxide pressureImaging studiesMR imagingTissue microcirculationImaging valuesPaCO2MicrocirculationQualitative pictureMotion sensitivityPresent studyCarbon dioxide-induced changeImaging techniquesFC techniqueRat motionsGradient coilsImagingDecreased glucose utilization in discrete brain regions of rat in thioacetamide‐induced hepatic encephalopathy as measured with [3H]‐deoxyglucose
Hilgier W, Benveniste H, Diemer N, Albrecht J. Decreased glucose utilization in discrete brain regions of rat in thioacetamide‐induced hepatic encephalopathy as measured with [3H]‐deoxyglucose. Acta Neurologica Scandinavica 1991, 83: 353-355. PMID: 1887755, DOI: 10.1111/j.1600-0404.1991.tb03961.x.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlood GlucoseBrainDeoxyglucoseFemaleHepatic EncephalopathyRadionuclide ImagingRatsRats, Inbred StrainsScintillation CountingThioacetamideConceptsBrain regionsLocal cerebral metabolic rateCerebral metabolic rateDiscrete brain regionsHepatic encephalopathyParticular brain regionsCerebral cortexGlutamatergic neuronsGlutamatergic neurotransmissionMedulla oblongataAuditory cortexGlucose utilizationDeoxyglucose uptakeBioenergetic failureEnergy metabolismRatsCortexPossible linkMetabolic ratePossible contributionThioacetamideOblongataEncephalopathyHippocampusStriatumDiffusion/microcirculation MRI in the rat brain
Macfall J, Maki J, Johnson G, Hedlund L, Benveniste H, Copher G. Diffusion/microcirculation MRI in the rat brain. Magnetic Resonance In Medicine 1991, 19: 305-310. PMID: 1908936, DOI: 10.1002/mrm.1910190219.Peer-Reviewed Original ResearchQuantitative proton magnetic resonance imaging in focal cerebral ischemia in rat brain.
Benveniste H, Cofer G, Piantadosi C, Davis J, Johnson G. Quantitative proton magnetic resonance imaging in focal cerebral ischemia in rat brain. Stroke 1991, 22: 259-268. PMID: 2003291, DOI: 10.1161/01.str.22.2.259.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrainBrain IschemiaCerebral InfarctionDiagnosis, Computer-AssistedMagnetic Resonance ImagingNecrosisRatsRats, Inbred StrainsSilverConceptsSelective neuronal injuryFocal cerebral ischemiaArea of injuryCerebral ischemiaNeuronal injuryTotal slice areaIschemic penumbraWistar ratsRat brainCresyl violet-stained brain sectionsMR imagingUpper cortical layersMale Wistar ratsPermanent unilateral occlusionCommon carotid arteryHistological sectionsArea of infarctionMR imagesNormal brain tissueMagnetic resonance imagingCerebral cortexUnilateral occlusionHistological damageHalothane anesthesiaCarotid artery
1989
Ischemic Damage in Hippocampal CA1 is Dependent on Glutamate Release and Intact Innervation from CA3
Benveniste H, Jørgensen M, Sandberg M, Christensen T, Hagberg H, Diemer N. Ischemic Damage in Hippocampal CA1 is Dependent on Glutamate Release and Intact Innervation from CA3. Cerebrovascular And Brain Metabolism Reviews 1989, 9: 629-639. PMID: 2570785, DOI: 10.1038/jcbfm.1989.90.Peer-Reviewed Original ResearchConceptsCA1 regionPyramidal cellsGlutamate releaseIntact innervationHippocampal tissueCA1 tissueInjection siteIschemia-induced releaseIschemia-induced damageTransient global ischemiaCA1 pyramidal cellsRelease of glutamateGlutamatergic afferentsIschemic damageHippocampal CA1CA1 pyramidsGlobal ischemiaCA3 regionPathogenetic significanceIschemiaNeurotoxic potentialCA3CA1GlutamateInnervationDetermination of Brain Interstitial Concentrations by Microdialysis
Benveniste H, Hansen A, Ottosen N. Determination of Brain Interstitial Concentrations by Microdialysis. Journal Of Neurochemistry 1989, 52: 1741-1750. PMID: 2723633, DOI: 10.1111/j.1471-4159.1989.tb07252.x.Peer-Reviewed Original Research
1988
Calcium accumulation by glutamate receptor activation is involved in hippocampal cell damage after ischemia
Benveniste H, Jørgensen M, Diemer N, Hansen A. Calcium accumulation by glutamate receptor activation is involved in hippocampal cell damage after ischemia. Acta Neurologica Scandinavica 1988, 78: 529-536. PMID: 2906199, DOI: 10.1111/j.1600-0404.1988.tb03697.x.Peer-Reviewed Original ResearchConceptsGlutamate N-methyl-D-aspartate receptorN-methyl-D-aspartate receptorsCell damageNerve cell destructionComplete cerebral ischemiaBrain cell damageMin of ischemiaOnset of ischemiaHippocampal cell damageGlutamate receptor activationCA 1 regionRole of intracellularCerebral ischemiaIschemic periodBilateral destructionDenervated hippocampusAfferent inputSynaptic transmissionCalcium influxIschemiaCompetitive antagonistReceptor activationHistological studyCell destructionCalcium accumulationEarly Postischemic 45Ca Accumulation in Rat Dentate Hilus
Benveniste H, Diemer N. Early Postischemic 45Ca Accumulation in Rat Dentate Hilus. Cerebrovascular And Brain Metabolism Reviews 1988, 8: 713-719. PMID: 3417798, DOI: 10.1038/jcbfm.1988.118.Peer-Reviewed Original Research
1987
Cellular reactions to implantation of a microdialysis tube in the rat hippocampus
Benveniste H, Diemer N. Cellular reactions to implantation of a microdialysis tube in the rat hippocampus. Acta Neuropathologica 1987, 74: 234-238. PMID: 3673515, DOI: 10.1007/bf00688186.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAstrocytesDialysisHippocampusHypertrophyIntubationMaleProstheses and ImplantsRatsRats, Inbred StrainsConceptsMicrodialysis tubeNumber of astrocytesAdjacent tissue reactionExtracellular neurotransmitter concentrationsNormal neuropilGranuloma formationOccasional hemorrhageRat hippocampusRat dorsalCollagen depositsAstrocyte processesTissue changesNeurotransmitter concentrationsFiber implantationTissue reactionAstrocytesImplantationNeuropilCellular reactionsDaysOptimal timeRegional Cerebral Glucose Phosphorylation and Blood Flow After Insertion of a Microdialysis Fiber Through the Dorsal Hippocampus in the Rat
Benveniste H, Drejer J, Schousboe A, Diemer N. Regional Cerebral Glucose Phosphorylation and Blood Flow After Insertion of a Microdialysis Fiber Through the Dorsal Hippocampus in the Rat. Journal Of Neurochemistry 1987, 49: 729-734. PMID: 3612121, DOI: 10.1111/j.1471-4159.1987.tb00954.x.Peer-Reviewed Original ResearchConceptsLocal cerebral blood flowBlood flowDorsal hippocampusGlucose metabolismMicrodialysis fibersLocal cerebral glucose metabolismCerebral glucose metabolismCerebral blood flowRat dorsal hippocampusGlucose phosphorylationNear normalizationFocal disturbanceRecovery periodPronounced disturbancesHippocampusRatsImplantationMetabolismPhosphorylationRecovery timeGliosisSlight reductionLCMRglcLCMRglu
1985
Cellular Origin of Ischemia‐Induced Glutamate Release from Brain Tissue In Vivo and In Vitro
Drejer J, Benveniste H, Diemer N, Schousboe A. Cellular Origin of Ischemia‐Induced Glutamate Release from Brain Tissue In Vivo and In Vitro. Journal Of Neurochemistry 1985, 45: 145-151. PMID: 2860206, DOI: 10.1111/j.1471-4159.1985.tb05486.x.Peer-Reviewed Original ResearchConceptsPotassium-induced releaseGlutamatergic neuronsAspartate uptakeConditions of hypoglycemiaCultured glutamatergic neuronsTransient cerebral ischemiaHigh potassiumExtracellular glutamate contentCerebral ischemiaGlutamate releaseTransmitter poolExtracellular glutamateMicrodialysis techniqueIschemiaBrain tissuePotassium stimulationPerfusion mediumHypoglycemiaGlutamate contentNeuronsInduced increasesCellular originVivo experimentsAstrocytesPrevious reports
1984
Elevation of the Extracellular Concentrations of Glutamate and Aspartate in Rat Hippocampus During Transient Cerebral Ischemia Monitored by Intracerebral Microdialysis
Benveniste H, Drejer J, Schousboe A, Diemer N. Elevation of the Extracellular Concentrations of Glutamate and Aspartate in Rat Hippocampus During Transient Cerebral Ischemia Monitored by Intracerebral Microdialysis. Journal Of Neurochemistry 1984, 43: 1369-1374. PMID: 6149259, DOI: 10.1111/j.1471-4159.1984.tb05396.x.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidCerebral ischemiaIschemic periodTransient complete cerebral ischemiaTransient cerebral ischemiaComplete cerebral ischemiaExtracellular contentAmino acid glutamateDiameter dialysisIntracerebral microdialysisConcentrations of alanineExtracellular glutamateRat hippocampusCertain neuronsTaurine concentrationsIschemiaExtracellular concentrationHippocampusExtracellular fluidRinger's solutionGlutamateSame periodAspartateCausal factorsPeriod