2017
The human brain produces fructose from glucose
Hwang JJ, Jiang L, Hamza M, Dai F, Belfort-DeAguiar R, Cline G, Rothman DL, Mason G, Sherwin RS. The human brain produces fructose from glucose. JCI Insight 2017, 2: e90508. PMID: 28239653, PMCID: PMC5313070, DOI: 10.1172/jci.insight.90508.Peer-Reviewed Original ResearchConceptsPolyol pathwayFructose levelsIntracerebral glucoseBlood-brain barrierPathogenesis of obesityType 2 diabetesEffects of fructoseHuman brainRegression model analysisCNS deliveryCNS effectsHyperglycemic clampHealthy subjectsDietary consumptionGlucoseBaselineBrainMixed-effects regression model analysisFeeding behaviorMinutesCN productionObesityDiabetesLevelsPathogenesis
2016
Reproducibility measurement of glutathione, GABA, and glutamate: Towards in vivo neurochemical profiling of multiple sclerosis with MR spectroscopy at 7T
Prinsen H, de Graaf RA, Mason GF, Pelletier D, Juchem C. Reproducibility measurement of glutathione, GABA, and glutamate: Towards in vivo neurochemical profiling of multiple sclerosis with MR spectroscopy at 7T. Journal Of Magnetic Resonance Imaging 2016, 45: 187-198. PMID: 27351712, PMCID: PMC5167659, DOI: 10.1002/jmri.25356.Peer-Reviewed Original Research
2014
Glutamate Metabolism in Major Depressive Disorder
Abdallah CG, Jiang L, De Feyter HM, Fasula M, Krystal JH, Rothman DL, Mason GF, Sanacora G. Glutamate Metabolism in Major Depressive Disorder. American Journal Of Psychiatry 2014, 171: 1320-1327. PMID: 25073688, PMCID: PMC4472484, DOI: 10.1176/appi.ajp.2014.14010067.Peer-Reviewed Original Research
2011
Intravenous Ethanol Infusion Decreases Human Cortical γ-Aminobutyric Acid and N-Acetylaspartate as Measured with Proton Magnetic Resonance Spectroscopy at 4 Tesla
Gomez R, Behar KL, Watzl J, Weinzimer SA, Gulanski B, Sanacora G, Koretski J, Guidone E, Jiang L, Petrakis IL, Pittman B, Krystal JH, Mason GF. Intravenous Ethanol Infusion Decreases Human Cortical γ-Aminobutyric Acid and N-Acetylaspartate as Measured with Proton Magnetic Resonance Spectroscopy at 4 Tesla. Biological Psychiatry 2011, 71: 239-246. PMID: 21855054, PMCID: PMC3227760, DOI: 10.1016/j.biopsych.2011.06.026.Peer-Reviewed Original ResearchConceptsIntravenous ethanol infusionProton magnetic resonance spectroscopyEthanol infusionNAA levelsN-acetylaspartateCortical γ-aminobutyric acidAcute pharmacologic effectsLevels of GABAHealthy social drinkersBreath alcohol levelsN-acetylaspartyl-glutamateCortical GABAEthanol modulatesFirst infusionΓ-aminobutyric acidGABA levelsPharmacologic effectsBrain ethanolOccipital GABAInfusionAlcohol levelsMagnetic resonance spectroscopyReceptor functionBreath ethanolHuman cortex
2009
Altered Brain Mitochondrial Metabolism in Healthy Aging as Assessed by in vivo Magnetic Resonance Spectroscopy
Boumezbeur F, Mason GF, de Graaf RA, Behar KL, Cline GW, Shulman GI, Rothman DL, Petersen KF. Altered Brain Mitochondrial Metabolism in Healthy Aging as Assessed by in vivo Magnetic Resonance Spectroscopy. Cerebrovascular And Brain Metabolism Reviews 2009, 30: 211-221. PMID: 19794401, PMCID: PMC2949111, DOI: 10.1038/jcbfm.2009.197.Peer-Reviewed Original ResearchConceptsNeuronal mitochondrial metabolismHealthy agingBrain mitochondrial metabolismElderly subjectsYoung subjectsBrain functionBrain mitochondrial functionGlutamate-glutamine cyclingMitochondrial metabolismVivo magnetic resonance spectroscopyAge-related changesChronic reductionLabeling of glutamineGlutamate concentrationYoung volunteersBiologic basisMagnetic resonance spectroscopyMitochondrial functionMetabolismSubjectsIndividual subjectsResonance spectroscopyTricarboxylic acid cycleCycle fluxAging
2006
Increased Brain Monocarboxylic Acid Transport and Utilization in Type 1 Diabetes
Mason GF, Petersen KF, Lebon V, Rothman DL, Shulman GI. Increased Brain Monocarboxylic Acid Transport and Utilization in Type 1 Diabetes. Diabetes 2006, 55: 929-934. PMID: 16567513, PMCID: PMC2995526, DOI: 10.2337/diabetes.55.04.06.db05-1325.Peer-Reviewed Original ResearchConceptsType 1 diabetesDiabetic subjectsControl subjectsType 1 diabetic subjectsInsulin-induced hypoglycemiaNondiabetic control subjectsMonocarboxylic acid transportBrain utilizationSimilar twofold increaseBrain energeticsHypoglycemiaType 1DiabetesOxidative metabolismNonglucose substratesBrainMetabolic substratesUpregulationPatientsAcid transportTwofold increaseSubjectsMagnetic resonance spectroscopyLactateMetabolism
1999
Determination of the rate of the glutamate/glutamine cycle in the human brain by in vivo 13C NMR
Shen J, Petersen K, Behar K, Brown P, Nixon T, Mason G, Petroff O, Shulman G, Shulman R, Rothman D. Determination of the rate of the glutamate/glutamine cycle in the human brain by in vivo 13C NMR. Proceedings Of The National Academy Of Sciences Of The United States Of America 1999, 96: 8235-8240. PMID: 10393978, PMCID: PMC22218, DOI: 10.1073/pnas.96.14.8235.Peer-Reviewed Original ResearchConceptsGlutamate/glutamine cycleGlutamine cycleCerebral cortexMin/Rat cerebral cortexVivo 13C NMR spectraGlucose oxidation ratesHuman brainGlucose oxidationGlutamatergic activityRat modelTricarboxylic acid cycle rateParietal lobeHuman cortexCortexTime courseBrainGlutamine synthesisMajor metabolic fluxCycle rateTricarboxylic acid cycleHigh levelsInfusionRatsAcid cycle
1998
Lateralization of human temporal lobe epilepsy by 31P NMR spectroscopic imaging at 4.1 T
Chu W, Hetherington H, Kuzniecky R, Simor T, Mason G, Elgavish G. Lateralization of human temporal lobe epilepsy by 31P NMR spectroscopic imaging at 4.1 T. Neurology 1998, 51: 472-479. PMID: 9710021, DOI: 10.1212/wnl.51.2.472.Peer-Reviewed Original ResearchConceptsMesial temporal lobeTemporal lobe epilepsy patientsTemporal lobe epilepsyPCr/PiTemporal lobeClinical lateralizationLobe epilepsySeizure focusEpilepsy patientsHealthy volunteersHuman temporal lobe epilepsyPi ratioSubgroup of patientsIpsilateral lobePresurgical lateralizationContralateral lobeLateralization resultsPatientsMetabolite ratiosNoninvasive modalityNoninvasive methodLateralizationScalp EEGAnterior regionIntracranial EEGEvaluation of 31P metabolite differences in human cerebral gray and white matter
Mason G, Chu W, Vaughan J, Ponder S, Twieg D, Adams D, Hetherington H. Evaluation of 31P metabolite differences in human cerebral gray and white matter. Magnetic Resonance In Medicine 1998, 39: 346-353. PMID: 9498589, DOI: 10.1002/mrm.1910390303.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAdultAlgorithmsBrainBrain DiseasesEnergy MetabolismEvaluation Studies as TopicFemaleFourier AnalysisHumansHydrogen-Ion ConcentrationImage Processing, Computer-AssistedMagnetic Resonance ImagingMagnetic Resonance SpectroscopyMalePhosphatesPhosphocreatinePhosphorusPhosphorus IsotopesRegression Analysis
1995
Proton nuclear magnetic resonance spectroscopic imaging of human temporal lobe epilepsy at 4.1 T
Hetherington H, Kuzniecky R, Pan J, Mason G, Morawetz R, Harris C, Faught E, Vaughan T, Pohost G. Proton nuclear magnetic resonance spectroscopic imaging of human temporal lobe epilepsy at 4.1 T. Annals Of Neurology 1995, 38: 396-404. PMID: 7668825, DOI: 10.1002/ana.410380309.Peer-Reviewed Original ResearchConceptsTemporal lobe epilepsyMagnetic resonance spectroscopic imagingProton magnetic resonance spectroscopic imagingLobe epilepsyAcetylaspartate ratioMetabolic abnormalitiesEpileptic focusBilateral independent seizure onsetHuman temporal lobe epilepsyIntractable temporal lobe epilepsyIntracranial electroencephalographic studiesOperated temporal lobeNormal control subjectsDistinctive metabolic profileMagnetic resonance imagingContralateral abnormalitiesControl subjectsSeizure onsetCholine levelsHealthy volunteersN-acetylaspartateTemporal lobePatientsEpilepsyResonance imaging
1994
Localized 13C NMR Spectroscopy in the Human Brain of Amino Acid Labeling from d‐[1‐13C]Glucose
Gruetter R, Novotny E, Boulware S, Mason G, Rothman D, Shulman G, Prichard J, Shulman R. Localized 13C NMR Spectroscopy in the Human Brain of Amino Acid Labeling from d‐[1‐13C]Glucose. Journal Of Neurochemistry 1994, 63: 1377-1385. PMID: 7931289, DOI: 10.1046/j.1471-4159.1994.63041377.x.Peer-Reviewed Original Research