2024
Transmembrane pH gradient imaging in rodent glioma models
Mishra S, Santana J, Mihailovic J, Hyder F, Coman D. Transmembrane pH gradient imaging in rodent glioma models. NMR In Biomedicine 2024, 37: e5102. PMID: 38263680, PMCID: PMC10987279, DOI: 10.1002/nbm.5102.Peer-Reviewed Original ResearchNormal tissuesRodent glioma modelsGL261 gliomasU87 gliomasTumor microenvironmentPotential therapeutic targetGlioma modelTumor survivalExtracellular acidosisTumorMetabolic reprogrammingRegulate drug deliveryIntracellular pHRat brainExtracellular pHTherapeutic targetGliomaMouse brainDrug deliveryIntracellular milieuTransmembrane pH gradientBrainSubmillimeter resolutionTissueCells
2023
Imaging the transmembrane pH gradient in gliomas
Mishra S, Mihailović J, Hyder F, Coman D. Imaging the transmembrane pH gradient in gliomas. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/3928.Peer-Reviewed Original ResearchAssess tumor aggressivenessMonitoring treatment efficacyTransmembrane pH gradientTumor responseTumor microenvironmentTumor aggressivenessRG2 tumorsLocal drug deliveryExtracellular acidosisTherapeutic outcomesTumorTreatment efficacyNormal tissuesBrain tumorsIntracellular pHExtracellular pHFunction biomarkersPositive therapeutic outcomesDrug deliveryIntracellular milieuBrainAcidosisGlioma
2022
A 3D atlas of functional human brain energetic connectome based on neuropil distribution
Yu Y, Akif A, Herman P, Cao M, Rothman D, Carson R, Agarwal D, Evans A, Hyder F. A 3D atlas of functional human brain energetic connectome based on neuropil distribution. Cerebral Cortex 2022, 33: 3996-4012. PMID: 36104858, PMCID: PMC10068297, DOI: 10.1093/cercor/bhac322.Peer-Reviewed Original ResearchConceptsSynaptic densityCortical regionsHigher synapse densityHuman cortical circuitsFunctional imaging studiesCortical activity mapsVivo PET imagingNeuropil distributionGlucose oxidationSynapse densityCortical circuitsMetabolic rateSynaptic connectionsCortical energeticsImaging studiesHuman cortexPET imagingHistological stainingRecent evidenceCortexHuman brainBrainVoxel levelActivity ratesAtlas
2014
Glutamatergic Function in the Resting Awake Human Brain is Supported by Uniformly High Oxidative Energy
Hyder F, Fulbright R, Shulman R, Rothman D. Glutamatergic Function in the Resting Awake Human Brain is Supported by Uniformly High Oxidative Energy. Cerebrovascular And Brain Metabolism Reviews 2014, 34: 368-368. PMCID: PMC3915214, DOI: 10.1038/jcbfm.2013.205.Peer-Reviewed Original Research
2013
Lactate preserves neuronal metabolism and function following antecedent recurrent hypoglycemia
Herzog RI, Jiang L, Herman P, Zhao C, Sanganahalli BG, Mason GF, Hyder F, Rothman DL, Sherwin RS, Behar KL. Lactate preserves neuronal metabolism and function following antecedent recurrent hypoglycemia. Journal Of Clinical Investigation 2013, 123: 1988-1998. PMID: 23543056, PMCID: PMC3638906, DOI: 10.1172/jci65105.Peer-Reviewed Original ResearchConceptsAntecedent recurrent hypoglycemiaRecurrent hypoglycemiaHypoglycemic conditionsIntensive insulin therapyTight glycemic controlType 2 diabetesInsulin therapyGlycemic controlBrain metabolismElevated lactateNeuronal metabolismRodent modelsNeuronal activityGlucose metabolismHypoglycemiaLactate uptakeNeuronal functionType 1Metabolic regulatorOxidative capacityModest incrementLactateMetabolismUnexpected findingBrain
2012
Quantitative fMRI and oxidative neuroenergetics
Hyder F, Rothman DL. Quantitative fMRI and oxidative neuroenergetics. NeuroImage 2012, 62: 985-994. PMID: 22542993, PMCID: PMC3389300, DOI: 10.1016/j.neuroimage.2012.04.027.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingNeuronal activityQuantitative functional magnetic resonance imagingTotal neuronal activityBlood oxygenation level-dependent (BOLD) signalBrain energy metabolismResting-state paradigmLevel-dependent signalMagnetic resonance imagingSynaptic activityResonance imagingParamagnetic contrast agentFunctional brainBOLD contrastBaseline stateEnergy metabolismFunctional mapsContrast agentsMagnetic resonance spectroscopyFMRI dataRegion of interestActivityNeuroenergeticsBrain
2003
Neuroenergetic Basis of Functional MRI: Implications for Efficiency of Brain Work
Hyder F. Neuroenergetic Basis of Functional MRI: Implications for Efficiency of Brain Work. 2003, 73-74. DOI: 10.1109/nebc.2003.1215998.Peer-Reviewed Original ResearchNeural activityLocal energy metabolismEnergy metabolismActual neuronal activitiesNeuronal excitabilityRat brainBlood flowNeuronal activityExtracellular recordingsFunctional MRIBlood oxygenationSensory stimulationBlood vesselsOxidative metabolismNeuronal ensemblesMRI mapsFMRI signalsBrain workNeural basisMetabolismFMRIFMRI dataExcitabilityActivityBrain
2002
Quantitative fMRI of rat brain by multi-modal MRI and MRS measurements
Hyder F, Kida I, Smith A, Blumenfeld H, Shulman R, Rothman D. Quantitative fMRI of rat brain by multi-modal MRI and MRS measurements. International Congress Series 2002, 1235: 57-71. DOI: 10.1016/s0531-5131(02)00173-5.Peer-Reviewed Original ResearchMagnetic resonance imagingRat brainNeuronal activityFunctional MRIBOLD fMRI signalCerebral cortexNeuronal glucose oxidationRat cerebral cortexFunctional magnetic resonance imagingFMRI signalsBOLD functional MRIQuantitative magnetic resonance imagingBlood oxygenation levelBOLD fMRI studiesMulti-modal magnetic resonance imagingQuantitative functional MRIGlutamatergic neuronsOxygen deliveryPhysiologic basisResonance imagingPhysiologic componentsCMRO2BrainBlood circulationOxygenation level
1999
Localized 1H NMR measurements of 2‐pyrrolidinone in human brain in vivo
Hyder F, Petroff O, Mattson R, Rothman D. Localized 1H NMR measurements of 2‐pyrrolidinone in human brain in vivo. Magnetic Resonance In Medicine 1999, 41: 889-896. PMID: 10332870, DOI: 10.1002/(sici)1522-2594(199905)41:5<889::aid-mrm6>3.0.co;2-r.Peer-Reviewed Original Research
1994
Dynamic Magnetic Resonance Imaging of the Rat Brain during Forepaw Stimulation
Hyder F, Behar K, Martin M, Blamire A, Shulman R. Dynamic Magnetic Resonance Imaging of the Rat Brain during Forepaw Stimulation. Cerebrovascular And Brain Metabolism Reviews 1994, 14: 649-655. PMID: 8014212, DOI: 10.1038/jcbfm.1994.81.Peer-Reviewed Original ResearchConceptsSomatosensory areaChloralose-anesthetized ratsDynamic magnetic resonance imagingMagnetic resonance imagingForelimb motorForepaw stimulationRat brainBrain mapping methodsElectrical stimulationMR signal intensityParietal cortexResonance imagingBrain tissueCoronal planeFractional signal changeStimulationSignal changesOxygenation stateSignal intensityRatsAnteriorCortexBloodBrain