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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Total parenteral nutrition with short- and long-chain triglycerides: triacetin improves nitrogen balance in rats.

Little is known about the long-term metabolic effects of parenteral administration of short-chain triglycerides. These studies were undertaken to investigate triacetin, the water-soluble triglyceride of acetate when it is incorporated into nutritionally balanced total parenteral nutrition formulas. Male Sprague-Dawley rats (n = 22) were fed an isovolemic, isocaloric and isonitrogenous diet for 7 d. The lipid energy represented 30% of the nonprotein energy with short-chain triglycerides representing 0, 50 or 90% of the lipid energy. Plasma acetate concentration was determined as well as indicators of protein metabolism: daily and cumulative nitrogen balance, whole body leucine kinetics and rectus muscle and liver fractional protein synthetic rates. No overt toxic effects were observed at any point during the study. As the proportion of short-chain triglycerides in the diet increased from 0 to 50 or 90% of the lipid energy, cumulative nitrogen balance increased 50 or 120%, respectively (P less than 0.05). Whole-body and tissue leucine kinetics (determined during the last 2.5 h of the 7-d study) were unaffected by the lipid composition of the diet. Plasma acetate concentration was not significantly different among groups. These results indicate that incorporation of the short-chain triglyceride, triacetin, in nutritionally balanced total parenteral nutrition formulas improves nitrogen balance with no overt toxic effects. These data indicate that triacetin may have a future role as a parenteral nutrient, and that further studies of its use are warranted.[1]


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