Abstract
Although it has been well documented that nonhepatic tissues uniformly exhibit low rates of cholesterol synthesis (1, 2), the factors responsible for this suppression and the enzymatic site of regulation have only recently been explored.Studies in cultured human fibroblasts indicate that these peripheral cells have the capacity to synthesize large amounts of cholesterol, but this activity is suppressed when the cells are exposed to whole serum containing low density lipoprotein (LDL) (3, 4). The enzymatic site of this suppression in human fibroblasts has been localized to 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMG CoA reductase), the same enzyme that limits the rate of cholesterol synthesis in liver (3, 4).
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Brown, M.S., Luskey, K., Bohmfalk, H.A., Helgeson, J., Goldstein, J.L. (1976). Role of the LDL Receptor in the Regulation of Cholesterol and Lipoprotein Metabolism. In: Greten, H. (eds) Lipoprotein Metabolism. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-66323-9_11
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DOI: https://doi.org/10.1007/978-3-642-66323-9_11
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