Intestinal transport and metabolism of bile acids

In addition to their classical roles as detergents to aid in the process of digestion, bile acids have been identified as important signaling molecules that function through various nuclear and G protein-coupled receptors to regulate a myriad of cellular and molecular functions across both metabolic...

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Main Authors: Paul A. Dawson, Saul J. Karpen
Format: Article
Language:English
Published: Elsevier 2015-06-01
Series:Journal of Lipid Research
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0022227520317211
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author Paul A. Dawson
Saul J. Karpen
author_facet Paul A. Dawson
Saul J. Karpen
author_sort Paul A. Dawson
collection DOAJ
description In addition to their classical roles as detergents to aid in the process of digestion, bile acids have been identified as important signaling molecules that function through various nuclear and G protein-coupled receptors to regulate a myriad of cellular and molecular functions across both metabolic and nonmetabolic pathways. Signaling via these pathways will vary depending on the tissue and the concentration and chemical structure of the bile acid species. Important determinants of the size and composition of the bile acid pool are their efficient enterohepatic recirculation, their host and microbial metabolism, and the homeostatic feedback mechanisms connecting hepatocytes, enterocytes, and the luminal microbiota. This review focuses on the mammalian intestine, discussing the physiology of bile acid transport, the metabolism of bile acids in the gut, and new developments in our understanding of how intestinal metabolism, particularly by the gut microbiota, affects bile acid signaling.
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spelling doaj.art-1988b7b53d574159bf25af0d04c0b3392022-12-21T22:31:19ZengElsevierJournal of Lipid Research0022-22752015-06-0156610851099Intestinal transport and metabolism of bile acidsPaul A. Dawson0Saul J. Karpen1To whom correspondence should be addressed.; Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, GA 30322Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, GA 30322In addition to their classical roles as detergents to aid in the process of digestion, bile acids have been identified as important signaling molecules that function through various nuclear and G protein-coupled receptors to regulate a myriad of cellular and molecular functions across both metabolic and nonmetabolic pathways. Signaling via these pathways will vary depending on the tissue and the concentration and chemical structure of the bile acid species. Important determinants of the size and composition of the bile acid pool are their efficient enterohepatic recirculation, their host and microbial metabolism, and the homeostatic feedback mechanisms connecting hepatocytes, enterocytes, and the luminal microbiota. This review focuses on the mammalian intestine, discussing the physiology of bile acid transport, the metabolism of bile acids in the gut, and new developments in our understanding of how intestinal metabolism, particularly by the gut microbiota, affects bile acid signaling.http://www.sciencedirect.com/science/article/pii/S0022227520317211enterohepatic circulationtransportersnuclear receptorsmicrobiome
spellingShingle Paul A. Dawson
Saul J. Karpen
Intestinal transport and metabolism of bile acids
Journal of Lipid Research
enterohepatic circulation
transporters
nuclear receptors
microbiome
title Intestinal transport and metabolism of bile acids
title_full Intestinal transport and metabolism of bile acids
title_fullStr Intestinal transport and metabolism of bile acids
title_full_unstemmed Intestinal transport and metabolism of bile acids
title_short Intestinal transport and metabolism of bile acids
title_sort intestinal transport and metabolism of bile acids
topic enterohepatic circulation
transporters
nuclear receptors
microbiome
url http://www.sciencedirect.com/science/article/pii/S0022227520317211
work_keys_str_mv AT pauladawson intestinaltransportandmetabolismofbileacids
AT sauljkarpen intestinaltransportandmetabolismofbileacids