Digestive Diseases and Sciences

, Volume 47, Issue 10, pp 2192–2210

Lovastatin Alters Biliary Lipid Composition and Dissolves Gallstones: A Long-Term Study in Prairie Dogs

  • Mohammad Z. Abedin
  • Seth C. Narins
  • Eun H. Park
  • Peter R. Smith
  • Kimberly S. Kirkwood
Article

Abstract

Lovastatin, an inhibitor of the rate-limiting enzyme in cholesterol biosynthesis, is widely used to treat hypercholesterolemia. We investigated the long-term effects of lovastatin alone and in combination with ursodeoxycholic acid on biliary lipid composition and gallstone dissolution. Forty-two prairie dogs were fed 1.2% cholesterol diet for 5 weeks, and cholecystectomy was performed on 6 animals to confirm gallstones. The remaining animals were maintained on a 0.4% cholesterol diet and were randomized to receive placebo, lovastatin (3.3 mg/g diet), ursodeoxycholic acid (10 mg/g), or combination of both drugs. After 10 weeks, animals underwent cholecystectomy. Dissolution response to therapy was determined, and serum and biliary lipids were measured. All treatment groups had significant reductions in serum cholesterol. Lovastatin treatment reduced both hepatic and gallbladder bile cholesterol, altered bile acid composition, and induced a 79% total response compared to placebo. Although ursodeoxycholic treatment induced a 44% response, long-term combination treatment elevated both gallbladder bile cholesterol and calcium and failed to produce an augmented response. These data suggest that lovastatin therapy alone may promote gallstone dissolution in humans.

gallstones dissolution lovastatin cholesterol bile acids prairie dogs 

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Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Mohammad Z. Abedin
    • 1
  • Seth C. Narins
    • 1
  • Eun H. Park
    • 1
  • Peter R. Smith
    • 2
  • Kimberly S. Kirkwood
    • 3
  1. 1.Department of SurgeryMCP Hahnemann UniversityPhiladelphiaUSA
  2. 2.Department of Physiology and BiophysicsUniversity of Alabama at BirminghamBirminghamUSA
  3. 3.Department of General SurgeryUniversity of CaliforniaSan FranciscoUSA

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