Glucose Disposal during Insulinopenia in Somatostatin-Treated Dogs: THE ROLES OF GLUCOSE AND GLUCAGON

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Abstract

The first aim of this study was to determine whether the plasma glucose level can regulate hepatic glucose balance in vivo independent of its effects on insulin and glucagon secretion. To accomplish this, glucose was infused into conscious dogs whose basal insulin and glucagon secretion had been replaced by exogenous intraportal insulin and glucagon infusion after somatostatin inhibition of endogenous pancreatic hormone release. The acute induction of hyperglycemia (mean increment of 121 mg/dl) in the presence of basal levels of insulin (7±1 μU/ml) and glucagon (76±3 pg/ml) resulted in a 56% decrease in net hepatic glucose production but did not cause net hepatic glucose uptake.

Authors

Gerald I. Shulman, John E. Liljenquist, Phillip E. Williams, William W. Lacy, Alan D. Cherrington