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Related Concept Videos

Bile01:19

Bile

Bile is a crucial bodily fluid, characterized by its yellow-green color and alkaline nature. Produced in the liver, it is transported through the common hepatic duct into either the cystic duct, leading to the gallbladder, or directly into the common bile duct. The flow of bile is regulated by the sphincter of Oddi located at the entrance of the duodenum. When this sphincter is closed, bile is redirected to the gallbladder for storage and concentration.
Bile is released when dietary fats enter...
Lipid Absorption01:24

Lipid Absorption

Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
Hepatic Drug Excretion: Enterohepatic Cycling01:17

Hepatic Drug Excretion: Enterohepatic Cycling

Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Hepatic Drug Excretion: Influencing Factors01:16

Hepatic Drug Excretion: Influencing Factors

The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
Overview of Fatty Acid Metabolism01:28

Overview of Fatty Acid Metabolism

Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Lipid Digestion01:06

Lipid Digestion

Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.

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Bile Salt and FGF19 Signaling in the Early Phase of Human Liver Regeneration.

Hepatology communications·2021
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Correction to: Targeting the ileal bile salt transporter in the treatment of non‑alcoholic fatty liver disease.

Hepatology international·2021
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Targeting the ileal bile salt transporter in the treatment of non-alcoholic fatty liver disease.

Hepatology international·2021
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Editorial: Systems Biology and Bioinformatics in Gastroenterology and Hepatology.

Frontiers in physiology·2019
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Glyco-conjugated bile acids drive the initial metaplastic gland formation from multi-layered glands through crypt-fission in a murine model.

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Gallbladder Dyskinesia Is Associated With an Impaired Postprandial Fibroblast Growth Factor 19 Response in Critically Ill Patients.

Hepatology (Baltimore, Md.)·2019

Related Experiment Video

Updated: Jun 13, 2026

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
08:42

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport

Published on: November 27, 2016

A new life for bile acids.

Peter L M Jansen1

  • 1Department of Gastrointestinal and Liver Disease, Academic Medical Center, Amsterdam, The Netherlands. p.l.jansen@amc.uva.nl

Journal of Hepatology
|April 16, 2010
PubMed
Summary

TGR5 activation by bile acids boosts energy expenditure and reduces obesity. This receptor signaling enhances glucagon-like peptide-1 (GLP-1) release, improving metabolic function and glucose tolerance in obese mice.

Area of Science:

  • Metabolic Research
  • Endocrinology
  • G protein-coupled receptor signaling

Background:

  • TGR5, a G protein-coupled receptor in brown adipose tissue and muscle, increases energy expenditure and combats diet-induced obesity.
  • Activation of TGR5 by bile acids is a key regulator of metabolic homeostasis.

Discussion:

  • TGR5 signaling stimulates intestinal glucagon-like peptide-1 (GLP-1) release, a crucial incretin hormone.
  • This GLP-1 induction improves liver and pancreatic function and enhances glucose tolerance in obese mouse models.

Key Insights:

  • Pharmacological and genetic studies demonstrate TGR5's role in regulating GLP-1 secretion in vivo.
  • The TGR5 agonist 6alpha-ethyl-23(S)-methyl-cholic acid (EMCA) increases intracellular ATP/ADP ratio and calcium mobilization in enteroendocrine cells, leading to GLP-1 release.

More Related Videos

Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates
06:10

Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates

Published on: August 23, 2022

Related Experiment Videos

Last Updated: Jun 13, 2026

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
08:42

Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport

Published on: November 27, 2016

Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates
06:10

Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates

Published on: August 23, 2022

Outlook:

  • Targeting TGR5 represents a potential therapeutic strategy for diabesity and related metabolic disorders.
  • Further research into TGR5 agonists could lead to novel incretin-based treatments.