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
Stoichiometric coupling of brain glucose metabolism and glutamatergic neuronal activity
Sibson N, Dhankhar A, Mason G, Rothman D, Behar K, Shulman R. Stoichiometric coupling of brain glucose metabolism and glutamatergic neuronal activity. Proceedings Of The National Academy Of Sciences Of The United States Of America 1998, 95: 316-321. PMID: 9419373, PMCID: PMC18211, DOI: 10.1073/pnas.95.1.316.Peer-Reviewed Original ResearchConceptsGlutamatergic neuronal activityGlutamate neurotransmitter cyclingNeuronal activityGln synthesisBrain glucose metabolismSynaptic glutamate releaseGlc metabolismGlutamate releaseRat cortexSynaptic activityGlucose metabolismNeuronal functionBrain activation studiesTricarboxylic acid cycleCortexMetabolismAcid cycleActivation studiesAstrocytesNeuronsActivity