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Related Concept Videos

Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Drugs for Treatment of Constipation-Predominant IBS01:21

Drugs for Treatment of Constipation-Predominant IBS

Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
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...
Gallbladder01:17

Gallbladder

The gallbladder is a small, pear-shaped organ that plays a crucial role in our digestive system. Measuring about 10 cm in length, it is comparable in size to a kiwi fruit and is located in a hollow area on the lower surface of the liver. The gallbladder's primary function is to store and concentrate bile, a fluid produced by the liver that aids in digestion.
The gallbladder's anatomy consists of three regions: the fundus, body, and neck. Extending from the neck, the cystic duct joins the common...
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
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The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Cholecystitis01:20

Cholecystitis

Cholecystitis is inflammation of the gallbladder, most commonly caused by obstruction of the cystic duct. This blockage prevents bile from draining, leading to gallbladder distension, inflammation, and potentially serious complications. This condition may present acutely or chronically and can happen with or without gallstones.EtiologyAbout 95% of cholecystitis cases are calculous, caused by gallstones blocking the cystic duct, leading to bile accumulation and inflammation of the gallbladder...

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Related Experiment Video

Updated: Jul 10, 2026

Bile Duct Ligation in Mice: Induction of Inflammatory Liver Injury and Fibrosis by Obstructive Cholestasis
08:56

Bile Duct Ligation in Mice: Induction of Inflammatory Liver Injury and Fibrosis by Obstructive Cholestasis

Published on: February 10, 2015

Lithogenic bile in patients with ileal dysfunction.

R H Dowling, G D Bell, J White

    Gut
    |June 1, 1972
    PubMed
    Summary
    This summary is machine-generated.

    Ileal dysfunction impairs bile salt levels, increasing cholesterol gallstone risk. This study links ileal disease to abnormal bile composition, explaining higher gallstone incidence in affected patients.

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    Ileectomy-induced Bile Overaccumulation in Mouse Intestine
    06:55

    Ileectomy-induced Bile Overaccumulation in Mouse Intestine

    Published on: August 21, 2017

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    Last Updated: Jul 10, 2026

    Bile Duct Ligation in Mice: Induction of Inflammatory Liver Injury and Fibrosis by Obstructive Cholestasis
    08:56

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    Published on: February 10, 2015

    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

    Ileectomy-induced Bile Overaccumulation in Mouse Intestine
    06:55

    Ileectomy-induced Bile Overaccumulation in Mouse Intestine

    Published on: August 21, 2017

    Area of Science:

    • Gastroenterology
    • Hepatology
    • Biliary Lithiasis Research

    Background:

    • Ileal disease or resection leads to bile salt malabsorption.
    • Reduced bile salt concentration in bile may compromise cholesterol solubility.
    • This could increase the risk of cholesterol gallstone formation.

    Purpose of the Study:

    • To investigate the relationship between ileal dysfunction and biliary lipid composition.
    • To determine if ileal dysfunction predisposes individuals to cholesterol gallstone formation.
    • To provide a physicochemical explanation for increased gallstone incidence in ileal dysfunction.

    Main Methods:

    • Analysis of biliary lipid composition in 10 patients with ileal dysfunction and 25 healthy controls.
    • Collection of bile-rich duodenal fluid stimulated by cholecystokinin.
    • Validation that duodenal fluid analysis accurately represents gallbladder bile composition.

    Main Results:

    • Nine out of ten patients with ileal dysfunction exhibited abnormal, supersaturated bile.
    • The bile composition in the ileal dysfunction group was significantly different from healthy controls.
    • While some controls also had unstable bile, the ileal group showed a marked deviation.

    Conclusions:

    • Ileal dysfunction significantly alters biliary lipid composition, exceeding cholesterol solubility limits.
    • This altered bile composition provides a direct physicochemical link to increased gallstone formation.
    • The findings offer a scientific basis for the observed higher gallstone prevalence in patients with ileal dysfunction.