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Abstract #4919

Adaptations in Central Carbon and Fatty Acid Metabolism in the Type 1 Diabetic Exocrine Pancreas by Magnetic Resonance

Anna Rushin1, Gaurav Sharma1, Geraldine Pierre1, Dalton Graham1, Callie Hardin1, and Matthew Merritt1
1University of Florida, Gainesville, FL, United States

Synopsis

Keywords: Biology, Models, Methods, Metabolism, Diabetes, Deuterium, Ex‐Vivo Applications, Hyperpolarized MR (Non‐Gas), Pancreas, Preclinical

Motivation: The role of the exocrine pancreas in Type 1 Diabetes (T1D) pathophysiology is dramatically understudied.

Goal(s): Our goal was to measure pyruvate metabolism and de novo lipogenesis (DNL) to determine if the exocrine pancreas displays metabolic adaptations in the context of T1D.

Approach: : We utilized hyperpolarized [1-13C]pyruvate and JHSQC experiments as well as 2H spectroscopy after 2H2O administration in a mouse model of T1D to interrogate these metabolic pathways.

Results: Pyruvate carboxylation was increased in the T1D exocrine pancreas with active pyruvate cycling. DNL was decreased in the liver with no significant changes in the pancreas.

Impact: The consequences of pyruvate cycling and increased pyruvate carboxylation in the T1D exocrine pancreas can now be investigated, and may be a target for therapeutic intervention, whereas rates of DNL were unchanged in the T1D pancreas.

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Keywords