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J Cell Biochem. 1994;55 Suppl:29-38.

Disordered metabolism in diabetes: have we underemphasized the fat component?

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Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas 75235.


Despite intensive investigation, a clear understanding of the metabolic disturbances in diabetes mellitus and their temporal relationship to each other during disease development has still not emerged. With emphasis on non-insulin-dependent diabetes (NIDDM), three possibilities are explored here: (1) that the insulin resistance characteristic of obesity/NIDDM syndromes is the result rather than the cause of hyperinsulinemia, as is widely held, (2) that the linkage between hyperactivity of the pancreatic beta-cell and peripheral insulin resistance is vested in excessive delivery of lipid substrate from liver to the muscle bed, and (3) the conceivably hyperamylinemia works in concert with hyperinsulinemia in promoting overproduction of very-low-density lipoproteins by the liver, and thus in the etiology of muscle insulin resistance.

[Indexed for MEDLINE]

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