Abstract

The effect of glipizide on hepatic uptake of insulin was studied in five patients with liver cirrhosis and five patients with varying diseases in the biliary system and pancreas. All patients had portal catheters for diagnostic purposes. The hepatic uptake of insulin was estimated from the clearance rate for insulin obtained after a constant rate infusion into a peripheral vein and the portal vein. Each patient was examined on two consecutive mornings, the second investigation carried out one hour after oral glipizide administration. The fractional hepatic uptake was significantly lower in cirrhotic patients (17% ± 6%) than in the other patients (52% ± 7%; P < .01). After glipizide, an increase in the estimated uptake of insulin occurred in cirrhotic patients (from 17% ± 6% to 39% ± 6%; P < .01), whereas an insignificant decrease was observed in the other patients (from 52% ± 7% to 43% ± 11%).

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