Effect of acute kidney exclusion by ligation of renal arteries on peripheral plasma glucagon levels and pancreatic glucagon production in the anesthetized dog

Abstract

Bilateral kidney exclusion in the anesthetized dog resulted in an immediate and important increase in arterial plasma glucagon. Forty minutes after ligation of the renal arteries, plasma glucagon averaged 200% of the basal values and 90 min after ligation, mean plasma glucagon averaged 357% of the mean basal value. Comparable changes were observed when basal plasma glucagon was markedly suppressed by intravenous infusion of glucose. The rate of production of glucagon by the pancreas was not significantly increased by kidney exclusion. Since the uptake of glucagon by the kidney was previously shown to be quantitatively important, the present findings suggest that abrupt cessation of kidney glucagon uptake is the major factor responsible for the rise in peripheral plasma glucagon levels observed after ligation of renal arteries.