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Interaction of dietary calcium with genes of transporters, receptors and enzymes involved in cholesterol metabolism

  • Xiaobo Wang
  • , Lin Lei
  • , Yuwei Liu
  • , Ka Ying Ma
  • , Jingnan Chen
  • , Rui Jiao
  • , Yu Huang
  • , Zhen-Yu Chen*
  • *Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 12 - Chapter in an edited book (Author)peer-review

Abstract

Dietary calcium has been shown to decrease plasma total cholesterol (TC) and low-density lipoprotein (LDL) cholesterol, particularly in postmenopausal women who have regularly taken calcium supplement for prevention of osteoporosis. Two possible mechanisms are associated with cholesterol-lowering activity of calcium supplement. First, calcium increases the bile-acid excretion due to its binding interaction with bile acids in the intestine. This is companied by upregulation of cholesterol-7α-hydroxylase (CYP7A1), a key enzyme in converting cholesterol to bile acids in the liver. Secondly, calcium supplement increases the cholesterol excretion, possibly mediated by downregulation of intestinal Niemann-Pick C1 like 1 (NPC1L1) and acyl coenzyme A: cholesterol acyltransferase 2 (ACAT-2), both of which are responsible for cholesterol absorption.
Original languageEnglish
Title of host publicationCalcium: Chemistry, Analysis, Function and Effects
PublisherRoyal Society of Chemistry
Pages519-529
Volume2016-January
DOIs
Publication statusPublished - 2016
Externally publishedYes

Publication series

NameFood and Nutritional Components in Focus
Volume2016-January
ISSN (Print)2045-1695
ISSN (Electronic)2045-1709

Bibliographical note

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