| Pravastatin activates PPARalpha/PPARgamma expression in the liver and gallbladder epithelium of hamsters. | |
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MedLine Citation:
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PMID: 21459726 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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BACKGROUND: Our earlier study with cultured gallbladder epithelial cells demonstrated that statins (HMG-CoA reductase inhibitors) activate the expression of PPARalpha and PPARgamma, consequently blocking the production of pro-inflmmatory cytokines. The present study used hamsters to investigate the effects of pavastatin on PPARalpha/PPARgamma expression in the liver and gallbladder epithelium, and to determine whether pravastatin suppresses cholesterol crystal formation in the gallbladder. METHODS: A total of 40 Golden Syrian male hamsters (4 weeks old) were randomly assigned to four groups (basal diet control; basal diet+pavastatin; high cholesterol diet; high cholesterol diet+pravastatin). All hamsters were 11 weeks old at the end of the experiment. The liver, gallbladder and bile were harvested. Immunohistochemical staining and Western blotting for PPARalpha and PPARgamma were performed in the liver and gallbladder. A drop of fresh bile was examined for cholesterol crystals under a microscope. RESULTS: In the gallbladder and liver of the hamsters, pravastatin activated the PPARalpha and PPARgamma expression of gallbladder epithelial cells and hepatocytes, and particularly the response of PPARgamma was much stronger than that of PPARalpha. Pravastatin suppressed the formation of cholesterol gallstones or crystals in the gallbladder. CONCLUSION: Pravastatin is an effective medication to activate PPARs (especially PPARgamma) in the liver and the gallbladder epithelium of hamsters, and contributes to the prevention of gallstone formation. |
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Authors:
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Seok Ho Dong; Jin Lee; Dong Hee Koh; Min Ho Choi; Hyun Joo Jang; Sea Hyub Kae |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Hepatobiliary & pancreatic diseases international : HBPD INT Volume: 10 ISSN: 1499-3872 ISO Abbreviation: HBPD INT Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101151457 Medline TA: Hepatobiliary Pancreat Dis Int Country: China |
Other Details:
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Languages: eng Pagination: 185-90 Citation Subset: IM |
Affiliation:
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Division of Gastroenterology, Department of Internal Medicine, Hallym University College of Medicine, Seoul 150-030, Republic of Korea. jinlee@medimail.co.kr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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