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To investigate the causes of hepatic dysfunction after extensive resection of the liver together with pancreatectomy, rats were subjected to sham operation, to 68% hepatectomy alone, to 90% pancreatectomy alone, or to 68% hepatectomy combined with 90% pancreatectomy (hepatopancreatectomy). Solutions of 5% or 20% glucose were infused post-operatively for 48 h at a constant rate (250 ml/kg body weight/day) under fasting conditions. To improve the survival rates of pancreatectomized and hepatopancreatectomized rats given 20% glucose, it was necessary to use insulin. In hepatopancreatectomized rats, infusion of 20% glucose with insulin (1 U/5 g glucose) induced prominent hepatocyte vacuolar degeneration and mitochondrial swelling, associated with reduced hepatic protein content. The severity of histological changes was proportional to the insulin dose and the activity of hepatic glucokinase, a key glycolytic enzyme. These histological changes were observed in pancreatectomized rats albeit in a milder form, but not in sham-operated or hepatectomized rats given 20% glucose nor in any rats given 5% glucose. Our results suggest that hepatopancreatectomy followed post-operatively by a high glucose load and exogenously administered insulin enhances the development of hepatocyte swelling.

Vacuolar Hepatocyte Degeneration Induced by Infusion of 20% Glucose Solution with Insulin after Hepatopancreatectomy in Rats