2020
Impaired neuronal and astroglial metabolic activity in chronic unpredictable mild stress model of depression: Reversal of behavioral and metabolic deficit with lanicemine
Mishra PK, Adusumilli M, Deolal P, Mason GF, Kumar A, Patel AB. Impaired neuronal and astroglial metabolic activity in chronic unpredictable mild stress model of depression: Reversal of behavioral and metabolic deficit with lanicemine. Neurochemistry International 2020, 137: 104750. PMID: 32360130, DOI: 10.1016/j.neuint.2020.104750.Peer-Reviewed Original ResearchConceptsChronic unpredictable mild stressCUMS micePrefrontal cortexChronic unpredictable mild stress (CUMS) modelNeurotransmitter cyclingThree-compartment metabolic modelUnpredictable mild stressCause of disabilityNMDA receptor antagonistPotential therapeutic roleMajor depressive disorderAstrocytic TCA cycleNeural metabolic activityMetabolic activityGABAergic neuronsInhibitory neurotransmissionReceptor antagonistSwim testSucrose preferenceC57BL6 miceDepressive disorderTherapeutic roleChronic depressionGlutamatergic pathwaysMetabolic deficits
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
2013
Oxidation of ethanol in the rat brain and effects associated with chronic ethanol exposure
Wang J, Du H, Jiang L, Ma X, de Graaf RA, Behar KL, Mason GF. Oxidation of ethanol in the rat brain and effects associated with chronic ethanol exposure. Proceedings Of The National Academy Of Sciences Of The United States Of America 2013, 110: 14444-14449. PMID: 23940368, PMCID: PMC3761635, DOI: 10.1073/pnas.1306011110.Peer-Reviewed Original ResearchConceptsChronic ethanol exposureEthanol-naïve ratsAlcohol exposureEthanol exposureAdult male Sprague-Dawley ratsMale Sprague-Dawley ratsMin/Chronic alcohol exposureCerebral glucose metabolismAcute alcohol exposureEthanol-treated ratsSprague-Dawley ratsCortical astrogliaOverall oxidative metabolismRat brainGlucose metabolismRatsRoom airLiving brainAstrogliaSubcortical tissueOxidative metabolismNeuronsBrainOxidative damage
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
Measurements of the anaplerotic rate in the human cerebral cortex using 13C magnetic resonance spectroscopy and [1‐13C] and [2‐13C] glucose
Mason GF, Petersen KF, De Graaf RA, Shulman GI, Rothman DL. Measurements of the anaplerotic rate in the human cerebral cortex using 13C magnetic resonance spectroscopy and [1‐13C] and [2‐13C] glucose. Journal Of Neurochemistry 2006, 100: 73-86. PMID: 17076763, PMCID: PMC2995551, DOI: 10.1111/j.1471-4159.2006.04200.x.Peer-Reviewed Original ResearchConceptsHuman cerebral cortexCerebral cortexArterial-venous differencesAwake humansNeurotransmitter cyclingGlutamine effluxNeurotransmitter traffickingOccipital-parietal regionsGlutamateCortexPyruvate carboxylase fluxRecent studiesGlutamine synthesisPyruvate carboxylaseMagnetic resonance spectroscopyMost studiesGlutaminePyruvate dehydrogenaseIncreased 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
2001
Decrease in GABA synthesis rate in rat cortex following GABA-transaminase inhibition correlates with the decrease in GAD67 protein
Mason G, Martin D, Martin S, Manor D, Sibson N, Patel A, Rothman D, Behar K. Decrease in GABA synthesis rate in rat cortex following GABA-transaminase inhibition correlates with the decrease in GAD67 protein. Brain Research 2001, 914: 81-91. PMID: 11578600, DOI: 10.1016/s0006-8993(01)02778-0.Peer-Reviewed Original ResearchConceptsTotal GAD activityGAD activityNon-treated control groupGABA-transaminase inhibitionNitrous oxide anesthesiaCortex of controlGlutamate-glutamine cyclingGlutamic acid decarboxylaseGABA synthesis rateGamma-aminobutyric acid (GABA) synthesisVigabatrin treatmentOxide anesthesiaRat cortexGAD67 proteinControl groupBasal conditionsAcid decarboxylaseEx vivoNeuronal compartmentsVigabatrinQuantitative immunoblottingIsoform compositionRatsCortexInhibitionIn vivo13C NMR measurement of neurotransmitter glutamate cycling, anaplerosis and TCA cycle flux in rat brain during [2‐13C]glucose infusion
Sibson N, Mason G, Shen J, Cline G, Herskovits A, Wall J, Behar K, Rothman D, Shulman R. In vivo13C NMR measurement of neurotransmitter glutamate cycling, anaplerosis and TCA cycle flux in rat brain during [2‐13C]glucose infusion. Journal Of Neurochemistry 2001, 76: 975-989. PMID: 11181817, DOI: 10.1046/j.1471-4159.2001.00074.x.Peer-Reviewed Original ResearchConceptsGlutamate/glutamine cyclingCerebral cortexAstrocytic tricarboxylic acid cycleGlutamine cyclingRat cerebral cortexGlutamine synthesisDe novo glutamine synthesisAnesthetized ratsRat brainNeurotransmitter glutamateHyperammonemic conditionsGlutamate cyclingInfusionGlutamate precursorCortexBrainTCA cycle fluxAnaplerosisMajor metabolic fluxTricarboxylic acid cycleCycle flux
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
Functional Energy Metabolism:In vivo 13C-NMR Spectroscopy Evidence for Coupling of Cerebral Glucose Consumption and Gl utamatergic Neuronal Activity
Sibson N, Shen J, Mason G, Rothman D, Behar K, Shulman R. Functional Energy Metabolism:In vivo 13C-NMR Spectroscopy Evidence for Coupling of Cerebral Glucose Consumption and Gl utamatergic Neuronal Activity. Developmental Neuroscience 1998, 20: 321-330. PMID: 9778568, DOI: 10.1159/000017327.Peer-Reviewed Original ResearchConceptsRat brain cortexGlucose metabolismBrain cortexNeurotransmitter cyclingTotal glucose oxidationGlutamatergic synaptic activityCerebral glucose consumptionCerebral glucose metabolismFunctional activityFunctional imaging methodsGlucose oxidationOxidative glucose metabolismGlutamate neurotransmitter cyclingSynaptic activityNeuronal activityMild anesthesiaGlutamine synthesisMammalian brainNeurotransmitter releaseGlutamate cyclingEEG activityAmmonia metabolismNeurophysiological basisDetoxification componentsVivo results
1997
In vivo 13C NMR measurements of cerebral glutamine synthesis as evidence for glutamate–glutamine cycling
Sibson N, Dhankhar A, Mason G, Behar K, Rothman D, Shulman R. In vivo 13C NMR measurements of cerebral glutamine synthesis as evidence for glutamate–glutamine cycling. Proceedings Of The National Academy Of Sciences Of The United States Of America 1997, 94: 2699-2704. PMID: 9122259, PMCID: PMC20152, DOI: 10.1073/pnas.94.6.2699.Peer-Reviewed Original Research13C editing of glutamate in human brain using J‐refocused coherence transfer spectroscopy at 4.1 T
Pan J, Mason G, Vaughan J, Chu W, Zhang Y, Hetherington H. 13C editing of glutamate in human brain using J‐refocused coherence transfer spectroscopy at 4.1 T. Magnetic Resonance In Medicine 1997, 37: 355-358. PMID: 9055224, DOI: 10.1002/mrm.1910370308.Peer-Reviewed Original Research
1996
Spectroscopic imaging of human brain glutamate by water‐suppressed J‐refocused coherence transfer at 4.1 T
Pan J, Mason G, Pohost G, Hetherington H. Spectroscopic imaging of human brain glutamate by water‐suppressed J‐refocused coherence transfer at 4.1 T. Magnetic Resonance In Medicine 1996, 36: 7-12. PMID: 8795013, DOI: 10.1002/mrm.1910360103.Peer-Reviewed Original Research
1995
Simultaneous Determination of the Rates of the TCA Cycle, Glucose Utilization, α-Ketoglutarate/Glutamate Exchange, and Glutamine Synthesis in Human Brain by NMR
Mason G, Gruetter R, Rothman D, Behar K, Shulman R, Novotny E. Simultaneous Determination of the Rates of the TCA Cycle, Glucose Utilization, α-Ketoglutarate/Glutamate Exchange, and Glutamine Synthesis in Human Brain by NMR. Cerebrovascular And Brain Metabolism Reviews 1995, 15: 12-25. PMID: 7798329, DOI: 10.1038/jcbfm.1995.2.Peer-Reviewed Original Research
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 ResearchDetection of brain glutamate and glutamine in spectroscopic images at 4.1 T
Mason G, Pan J, Ponder S, Twieg D, Pohost G, Hetherington H. Detection of brain glutamate and glutamine in spectroscopic images at 4.1 T. Magnetic Resonance In Medicine 1994, 32: 142-145. PMID: 7916115, DOI: 10.1002/mrm.1910320121.Peer-Reviewed Original Research
1992
NMR Determination of the TCA Cycle Rate and α-Ketoglutarate/Glutamate Exchange Rate in Rat Brain
Mason G, Rothman D, Behar K, Shulman R. NMR Determination of the TCA Cycle Rate and α-Ketoglutarate/Glutamate Exchange Rate in Rat Brain. Cerebrovascular And Brain Metabolism Reviews 1992, 12: 434-447. PMID: 1349022, DOI: 10.1038/jcbfm.1992.61.Peer-Reviewed Original Research