Cholesterol and plant sterol absorption : recent insights

The recent discovery of transporters in the intestinal mucosa and the canalicular membrane has given new insights into the regulation of intestinal absorption as well as the biliary output of cholesterol and plant sterols. The 2 adenosine triphosphate (ATP)-binding cassette (ABC) half-transporters A...

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Bibliographic Details
Published in:The American journal of cardiology, Vol. 96, No. 1A (2005), p. 10D-14D
Main Author: von Bergmann, Klaus
Other Involved Persons: Sudhop, Thomas ; Lütjohann, Dieter
Format: Article
Language:English
ISSN:1879-1913
Item Description:Date Completed 02.08.2005
Date Revised 13.12.2017
published: Print
Citation Status MEDLINE
Copyright: From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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520 |a The recent discovery of transporters in the intestinal mucosa and the canalicular membrane has given new insights into the regulation of intestinal absorption as well as the biliary output of cholesterol and plant sterols. The 2 adenosine triphosphate (ATP)-binding cassette (ABC) half-transporters ABCG5 and ABCG8 are expressed in the mucosa cells and the canalicular membrane, and they resecrete sterols, especially absorbed plant sterols, back into the intestinal lumen and from the liver into bile. Defects of either of these cotransporters lead to the rare inherited disease of phytosterolemia, which is clinically defined by hyperabsorption and diminished biliary excretion of plant sterols. Furthermore, it has been recently demonstrated that the Niemann-Pick C1-Like 1 (NPC1L1) transporter is most likely responsible for the transport of cholesterol and plant sterols from the brush border membrane into the intestinal mucosa. Ezetimibe interferes with NPC1L1, reducing the intestinal uptake of cholesterol and plant sterols. These new findings contribute to our understanding of cholesterol and plant sterol concentrations in serum, and the effect of dietary and drug intervention to reduce serum concentrations of sterols 
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