Increased Myocardial Fatty Acid Metabolism in Patients With Type 1 Diabetes Mellitus
Pilar Herrero, MS*,
Linda R. Peterson, MD , ,
Janet B. McGill, MD ,
Stanley Matthew, MD ,
Donna Lesniak, RN*,
Carmen Dence, MS* and
Robert J. Gropler, MD*, ,*
* Division of Radiological Sciences, Edward Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri
Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri
Division of Geriatrics and Nutritional Sciences, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
Division of Endocrinology and Metabolism, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri

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Figure 1 Plasma insulin, glucose, lactate, and free fatty acid (FFA) levels during positron emission tomography imaging in both the non-diabetics (ND) and diabetic (DM) subjects. *p = 0.04, **p < 0.0001.
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Figure 2 Measurements of myocardial glucose extraction fraction (MGEF) and overall utilization (MGU) in both the non-diabetic (ND) and diabetic (DM) subjects. *p = 0.013, **p = 0.0008.
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Figure 3 Measurements of myocardial fatty acid extraction fraction (MFAEF), overall myocardial fatty acid utilization (MFAU), myocardial fatty acid oxidation (MFAO), and myocardial fatty acid fractional oxidation (%MFAO) in both the non-diabetic (ND) and diabetic (DM) subjects. *p = 0.0004, **p = 0.0002, p = 0.04.
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Figure 4 Correlation of fractional myocardial fatty acid oxidation (%MFAO) and plasma fatty acid levels in both non-diabetic and diabetic subjects. DM = diabetes mellitus; NV = normal volunteers.
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Figure 5 Correlation of fractional myocardial fatty acid oxidation (%MFAO) and duration of diabetes in the diabetic subjects. DM = diabetes mellitus.
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