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Related Concept Videos

Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

450
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...
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Bacterial Flora of the Large Intestine01:29

Bacterial Flora of the Large Intestine

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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
436
Anatomy of the Intestines01:23

Anatomy of the Intestines

71.9K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
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Irritable Bowel Syndrome I: Introduction01:17

Irritable Bowel Syndrome I: Introduction

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
272
Other Disorders of Digestive System01:30

Other Disorders of Digestive System

826
The gastrointestinal tract is susceptible to various disorders. If the lower esophageal sphincter is damaged, stomach acid can flow back into the esophagus, causing irritation and inflammation of the lining. This condition is called gastroesophageal reflux disease (known as heartburn) and may cause chest pain and difficulty swallowing. In the stomach, prolonged use of nonsteroidal anti-inflammatory drugs like aspirin, chronic alcohol consumption, bacterial infections such as Helicobacter...
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
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...
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Related Experiment Video

Updated: Jun 29, 2025

Therapeutic Evaluation of Fecal Microbiota Transplantation in an Interleukin 10-Deficient Mouse Model
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Intestinal microbiota and biliary system diseases.

Hua Wang1, Junfeng Gong2, Jingyi Chen3

  • 1Department of Health, The Chinese People's Armed Police Forces Anhui Provincial Corps Hospital, Hefei, China.

Frontiers in Cellular and Infection Microbiology
|April 1, 2024
PubMed
Summary
This summary is machine-generated.

Changes in gut bacteria are linked to biliary diseases like gallstones and cancer. This study highlights specific bacterial shifts, offering potential biomarkers for early diagnosis and new treatment directions for these growing health concerns.

Keywords:
biliary tract cancergallstonesmicrobial communityprimary biliary cholangitisprimary sclerosing cholangitis

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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

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Area of Science:

  • Gastroenterology
  • Microbiology
  • Oncology

Background:

  • Biliary system diseases are increasing globally, posing a significant health burden.
  • The exact causes and mechanisms of these diseases remain largely unknown.
  • Intestinal microbiota plays a role in bile duct lipid metabolism, influencing biliary health.

Purpose of the Study:

  • To systematically review and compare changes in intestinal microbiota across various biliary diseases.
  • To identify potential microbial biomarkers for early diagnosis of biliary conditions.
  • To explore novel therapeutic strategies targeting the gut microbiome for biliary diseases.

Main Methods:

  • Systematic literature review of studies up to November 2023.
  • Searched databases: PubMed, Embase, and Web of Science.
  • Focused on intestinal microbiota in gallstones (GS), non-calculous biliary inflammation, and biliary tract cancer (BTC).

Main Results:

  • Decreased abundance of Faecalibacterium genus observed in GS, primary sclerosing cholangitis (PSC), primary biliary cholangitis (PBC), and BTC.
  • Increased abundance of Veillonella, Lactobacillus, Streptococcus, and Enterococcus genera in PSC, PBC, and BTC.
  • Variable changes in Clostridium genus abundance across different biliary diseases (reduced in GS, PBC, BTC; increased in PSC).

Conclusions:

  • Significant alterations in intestinal microbiota composition are associated with various biliary diseases.
  • Specific bacterial genera show potential as biomarkers for early detection of biliary system diseases.
  • Understanding these microbial shifts offers new avenues for developing targeted therapies for biliary conditions.