A note on the influence of energy intake on phospholipid metabolism

Abstract

The effect of variations in energy intake on the amt. of phospholipid in the rat liver and its uptake of labelled P was studied. When the diet provided an adequate supply or protein, the amt. of phospholipid in the liver rose in response to increments in energy intake, and the total turnover rate of phospholipid was influenced by energy intake. It is suggested that the rate of phospholipid synthesis on protein- free diets is unaffected by energy intake within the range studied because some other component in synthesis is reduced to a level at which it becomes the factor determining the rate of synthesis. The relationship of energy balance to the rates of synthesis of protein, phospholipid and ribonucleic acid is discussed.