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  • Title: Medium chain length fatty acids stimulate triacylglycerol synthesis in tissue culture cells.
    Author: Hornung B, Amtmann E, Sauer G.
    Journal: Biochem Pharmacol; 1992 Jan 22; 43(2):175-81. PubMed ID: 1739406.
    Abstract:
    In the presence of undecanoic acid (C11) or lauric acid (C12) the synthesis of triacylglycerols was stimulated up to 10-fold both in tumor cell lines and in normal cell lines. Monocarboxylic acids of shorter or longer chain length either had no effect at all or were less effective. The increased triacylglycerol production was demonstrated, on the one hand, by the incorporation of radiolabeled glycerol into triacylglycerols and, on the other, by the incorporation of radiolabeled monocarboxylic acids, the incorporation of all (1-14C)-labeled monocarboxylic acids (C6, C12, C16, C18) regardless of their chain length, being preferentially enhanced by C11 and C12. C12 stimulated the de novo synthesis of triacylglycerols to such a degree that a 7-fold increase in the total amount of triacylglycerols per cell was observed during the first 10 hr of incubation. After removal of C12 from the tissue culture medium levels of triacylglycerols reach initial values again within 6 hr, indicating that the stimulatory effect of C12 is dependent on its continued presence. This led to the speculation that medium chain length monocarboxylic acids might be involved in the control of triacylglycerol synthesis.
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