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Amino acid concentrations in plasma and skeletal muscle of patients with acute hemorrhagic necrotizing pancreatitis.

We measured amino acid concentrations in plasma and skeletal muscle of three groups of patients with acute hemorrhagic pancreatitis: (a) patients without secondary organ lesions, (b) patients also suffering from kidney damage, and (c) patients in whom the pancreatitis was accompanied by sepsis and multiple organ failure. In all three groups, especially the third group, the amino acid concentrations in both plasma and muscle were below normal. Glutamine was only 14% of normal in muscle tissue of the third group. Onset of renal insufficiency was indicated by increasing values for 3-methylhistidine and cystathionine; multiple organ failure, by increased concentrations of methionine and phenylalanine in plasma. The low amino acid concentrations of patients with acute pancreatitis can be explained as a combined effect of semistarvation and hypercatabolism. Changes in the plasma concentrations of amino acids did not reflect necessarily the concentrations in muscle tissue.