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  • Title: Bile salt metabolism. I. The physiology of bile salts.
    Author: Cowen AE, Campbell CB.
    Journal: Aust N Z J Med; 1977 Dec; 7(6):579-86. PubMed ID: 274936.
    Abstract:
    Bile salts are synthesized in the liver from cholesterol, conjugated with glycine or taurine and secreted in bile with cholesterol and lecithin. The molar concentrations of these three lipids determine solubility of cholesterol in bile. Within the gastrointestinal lumen bile salts play an essential role in lipid absorption and faty transport. An efficienct entero-hepatic circulation maintains hepatic bile salt secretion and provides a "feed-back" control of the bile salt and cholesterol metabolism. Potentially hepatotoxic lithocholic acid formed in the intestinal lumen by bacterial action on chenodeoxycholic acid is sulphated in the liver thus decreasing intestinal reabsorption. The total faecal excretion of bile salts balances hepatic synthesis and represents a major catabolic path in cholesterol metabolism.
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