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  • Title: Bile acid and phospholipid fatty acid composition in bile of patients with cholesterol and pigment gallstones.
    Author: van Erpecum KJ, van Berge Henegouwen GP, Stolk MF.
    Journal: Clin Chim Acta; 1991 Jul 15; 199(3):295-303. PubMed ID: 1769113.
    Abstract:
    It has been previously reported that patients with cholesterol gallstones have increased biliary deoxycholate and arachidonate content as compared with normal subjects without gallstones. Increased biliary deoxycholate and arachidonate content might be a primary factor in the pathogenesis of cholesterol gallstones or merely an epiphenomenon due to the presence of gallstones. We therefore compared biliary bile acid composition in 46 patients with cholesterol gallstones and 22 patients with pigment stones. In addition, biliary phospholipid fatty acid composition was determined in 44 of these patients (30 cholesterol and 14 pigment stone patients). No significant differences were detected. In particular, the percentage deoxycholic acid (mean +/- SD: 20.3 +/- 8.8% and 21.5 +/- 10.9% respectively) and the percentage arachidonic acid (4.4 +/- 2.0% and 4.5 +/- 2.2%, respectively) were very similar. A significant correlation between age and biliary cholesterol saturation index was found only for the group of patients with pigment stones (R = 0.52, p less than 0.02). In conclusion, the present study does not support a primary role for increased biliary deoxycholic acid or arachidonic acid in the pathogenesis of cholesterol gallstones.
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