Markedly raised intake of saturated and monounsaturated fatty acids in rats on a high‐fat ketogenic diet does not inhibit carbon recycling of13C‐α‐linolenate
2006
Under various dietary and physiological conditions, carbon from α-linolenic acid (ALA) is extensively recycled into saturated and monounsaturated fatty acids. In this study we investigated whether carbon is still recycled from ALA when a dietary source of saturated and monounsaturated fatty acids is provided in excess.13C-labeled ALA was given to rats consuming a high-fat ketogenic diet and to rats consuming a low-fat control diet. In rats on the ketogenic diet,13C recycling from α-linolenate into several, but not all, saturated and monounsaturated fatty acids matched or exceeded that in the controls (P<0.05). We conclude that carbon recycling into saturated and monounsaturated fatty acids persists when the main end products of ALA recycling are provided in excess, using a ketogenic diet.
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