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  • Title: Differential effect of inflammation and dexamethasone on dolichol and dolichol phosphate synthesis.
    Author: Sarkar M, Mookerjea S.
    Journal: Biochem Cell Biol; 1988 Dec; 66(12):1265-9. PubMed ID: 3245904.
    Abstract:
    Inflammation and glucocorticoids stimulate hepatic glycoprotein synthesis, resulting in an increased secretion of serum glycoproteins. We now present evidence that the synthesis of dolichol and dolichol phosphate from mevalonate is increased in hepatocytes from inflamed rats. Also, in inflamed rats, the levels of dolichol and dolichol phosphate are increased in liver homogenates and microsomes. Dexamethasone treatment of the cells, however, does not increase the synthesis of dolichol and dolichol phosphate from mevalonate. The results suggest that the inflammation-induced dolichol-linked saccharide and glycoprotein synthesis is possibly mediated through an increase in the level of dolichol and dolichol phosphate in the liver. Since dexamethasone treatment does not increase the synthesis of dolichol and dolichol phosphate, its action on glycoprotein synthesis appears to be different and to affect the induction of enzymes in mannosyl phosphoryl dolichol- and dolichol-linked oligosaccharide synthesis.
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