Abstract
SummaryTo assess the basis of cholestasis associated with total parenteral nutrition (TPN), we studied the short term effect of the component solutions on bile flow and bile salt secretion in infant and adult rabbits. Groups of four to six adult and infant rabbits received intravenously 154 mM NaCl (control), 2.5% amino acid, 10% glucose, or 10% fat emulsion alone or in combination. Bile was collected directly from the common bile duct for 3 h. Solutions containing both amino acids and glucose significantly (p < 0.05) reduced bile flow and bile salt secretion in both age groups. Glucose alone also decreased bile flow and bile salt secretion, whereas amino acids as the sole infusate significantly (p < 0.05) decreased bile flow only. The suppressive effect of the amino acid glucose solutions on bile flow was more pronounced in infants than in adults. Fat emulsion alone had no effect on bile formation. Our findings demonstrate that short term intravenous administration of nutrient solutions containing amino acids and glucose reduces bile flow and bile salt secretion, suggesting that these components are responsible for TPN associated cholestasis.
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