2023
Tissue-specific reprogramming of glutamine metabolism maintains tolerance to sepsis
Leitner B, Lee W, Zhu W, Zhang X, Gaspar R, Li Z, Rabinowitz J, Perry R. Tissue-specific reprogramming of glutamine metabolism maintains tolerance to sepsis. PLOS ONE 2023, 18: e0286525. PMID: 37410734, PMCID: PMC10325078, DOI: 10.1371/journal.pone.0286525.Peer-Reviewed Original ResearchConceptsTCA cycle anaplerosisGlobal mitochondrial dysfunctionAromatic amino acid transportAmino acid transportTissue-specific metabolic responsesMurine polymicrobial sepsis modelMetabolic signaturesAntioxidant metabolismGlutathione biosynthesisMitochondrial metabolismTCA cycleGreat therapeutic interestEnergetic demandsPolymicrobial sepsis modelAntioxidant synthesisUnique metabolic signatureGlutamine metabolismMitochondrial dysfunctionAcid transportMuscle transcriptomicsGlutathione cyclingATP ratioIsotope tracingCritical illnessReduced expression
2017
Non-invasive assessment of hepatic mitochondrial metabolism by positional isotopomer NMR tracer analysis (PINTA)
Perry RJ, Peng L, Cline GW, Butrico GM, Wang Y, Zhang XM, Rothman DL, Petersen KF, Shulman GI. Non-invasive assessment of hepatic mitochondrial metabolism by positional isotopomer NMR tracer analysis (PINTA). Nature Communications 2017, 8: 798. PMID: 28986525, PMCID: PMC5630596, DOI: 10.1038/s41467-017-01143-w.Peer-Reviewed Original ResearchConceptsMitochondrial metabolismHepatic mitochondrial metabolismPyruvate carboxylase fluxCitrate synthase fluxPyruvate cyclingMitochondrial uncouplerIntermediary metabolismSpectrometry analysisPhysiological conditionsChromatography-mass spectrometry analysisSynthase fluxCentral roleMetabolismHepatic mitochondriaGas chromatography-mass spectrometry analysisVivo NMR spectroscopyMitochondriaNMR spectroscopyRegulationUncouplerRoleTracer analysisVivoMaintenance of normoglycemiaWide range