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Abstract #0272

Real-Time Metabolic Probe Into Non-Alcoholic Fatty Liver Disease with Hyperpolarized Carbon-13

Philip Lee1, Maegan Lim2, Weiping Han2, George Radda1

1functional Metabolism Group, Singapore Bioimaging Consortium, Singapore, Singapore; 2Lab Of Metabolic Medicine, Singapore Bioimaging Consortium, Singapore, Singapore

Non-alcoholic fatty liver disease (NAFLD) induces changes in liver metabolism. In order to measure such functional aberration, we injected hyperpolarized carbon-13-labeled pyruvate into a mouse model of hepatic steatosis and followed its metabolism in real-time and in-vivo. Initial results showed elevation in malate and aspartate levels, suggesting an increase in pyruvate carboxylase flux. Glucose tolerance test reveals glucose intolerance, a harbinger of diabetes. Quantification of pyruvate carboxylase flux via hyperpolarized pyruvate, as well as measures of downstream malate and aspartate metabolite pools could serve as alternative biomarkers of hepatic steatosis.

Keywords

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