Ammonia and Uric Acid Formation after Rapid Intravenous Fructose Administration to Healthy Subjects and Patients with Compensated Cirrhosis of the Liver

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Abstract
To seven healthy volunteers, 12 and 24 g i.v. fructose were administrated in the form of 20 % solution at a rate of 4 g/min. After both doses, during the 10th min after the completed intravenous administration, a statistically significant increase of serum ammonia and serum uric acid occurred. After 24 g, the rise of the uric acid level remains significant during the 40th min after administration, while ammonia values return to the basal level. Increments of ammonia and uric acid are higher after a larger fructose dose. Under the same set-up and at the same rate, 24 g fructose were administered to eight patients with compensated cirrhosis of the liver. The rise of uric acid was practically the same as in healthy subjects similar to the rise of the ammonia level during the 10th min after administration. 40 min after administration, however, the ammonia level in cirrhotic patients remained significantly raised, as compared with the initial level.

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