Related Experiment Video

Updated: Jul 20, 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

Effect of ursodeoxycholate and its taurine conjugate on bile acid synthesis and cholesterol absorption

W G Hardison, S M Grundy

    Gastroenterology
    |July 1, 1984
    PubMed

    More Related Videos

    Ileectomy-induced Bile Overaccumulation in Mouse Intestine06:55

    Ileectomy-induced Bile Overaccumulation in Mouse Intestine

    Published on: August 21, 2017

    Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol10:12

    Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol

    Published on: March 25, 2020

    Related Concept Videos

    Drug Metabolism: Phase II Reactions01:14

    Drug Metabolism: Phase II Reactions

    Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
    Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry01:20

    Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

    Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
    Phase II Reactions: Miscellaneous Conjugation Reactions01:19

    Phase II Reactions: Miscellaneous Conjugation Reactions

    Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
    A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
    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...
    Bioavailability Enhancement: Drug Permeability Enhancement01:27

    Bioavailability Enhancement: Drug Permeability Enhancement

    After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...