Analysis of the Citric Acid Cycle Intermediates Using Gas Chromatography-Mass Spectrometry
Researchers view analysis of the citric acid cycle (CAC) intermediates as a metabolomic approach to identifying unexpected correlations between apparently related and unrelated pathways of metabolism. Relationships of the CAC intermediates, as measured by their concentrations and relative ratios, offer useful information to understanding interrelationships between the CAC and metabolic pathways under various physiological and pathological conditions. This chapter presents a relatively simple method that is sensitive for simultaneously measuring concentrations of CAC intermediates (relative and absolute) and other related intermediates of energy metabolism using gas chromatography-mass spectrometry.
Key wordsCitric acid cycle CAC intermediates GC-MS metabolomics mass spectrometry
This work was supported, in whole or in part, by National Institutes of Health Roadmap Grant R33DK070291 and Grant R01ES013925. This work was also supported by a grant from the Cleveland Mt. Sinai Health Care Foundation. We acknowledge the Mouse Metabolic Phenotyping Center (MMPC) at Case Western Reserve University where many of these procedures were developed.
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