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Journal of Nutrition Vol. 87 No. 4 December 1965, pp. 469-476
Copyright © 1965 by American Society for Nutrition
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Growth-promoting and Lipotropic Effect of Carnitine in Rats Fed Diets Limited in Protein and Methionine1

Edward A. Khairallah and George Wolf

Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts

Addition of 0.2% DL-carnitine to diets low in methionine and containing 6 to 8% casein, or an L-amino acid mixture simulating casein, led to an increase in the growth of rats and to a decrease in the lipid content of their livers. Increasing the methionine content to 0.7% resulted in enhanced growth and an increase in the carnitine content of the liver. It is suggested that in rats carnitine has a methionine-sparing action and may thus be considered a food factor required in marginal diets.

1 Abstracted in part from work submitted in partial fulfillment of the research requirement for the degree of Doctor of Philosophy in the Department of Nutrition and Food Science at the Massachusetts Institute of Technology. This work was supported by Research Grant no. AM06346 and by a predoctoral fellowship no. 7-FI-GM-13591-03 from the U. S. Public Health Service. Contribution no. 677 from the Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.

Manuscript received 15 April 1965.




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