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Glutamate-weighted chemical exchange saturation transfer (GluCEST) is a useful imaging tool which is used to detect glutamate signal alterations caused by neuroinflammation. The present study quantitatively evaluated glutamate level changes in the hippocampal region of a rat model of sepsis-induced brain injury using GluCEST and proton magnetic resonance spectroscopy (1H-MRS). The GluCEST and 1H-MRS results showed that GluCEST values and glutamate concentrations were significantly higher in the sepsis-induced rats than in the controls. GluCEST imaging could be a helpful technique for defining a biomarker to estimate the glutamate-related metabolism in sepsis-associated diseases.
Lee et al. (Wed,) studied this question.