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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...
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Cholecystitis

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Chronic Pancreatitis II: Collaborative Care

The management of chronic pancreatitis is multifaceted, involving a comprehensive approach that includes thorough assessment, diagnostic testing, and a variety of management strategies.
Assessment:
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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Chronic Pancreatitis II: Pathophysiology01:21

Chronic Pancreatitis II: Pathophysiology

Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...
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Chronic Pancreatitis I: Introduction

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Related Experiment Videos

Cutting edge issues in primary sclerosing cholangitis.

Christopher L Bowlus1

  • 1Division of Gastroenterology and Hepatology, University of California Davis Medical Center, Sacramento, USA. clbowlus@ucdavis.edu

Clinical Reviews in Allergy & Immunology
|December 21, 2010
PubMed
Summary

Primary sclerosing cholangitis (PSC) is a chronic liver disease damaging bile ducts. Its exact cause is unknown, but it may involve immune system dysregulation and gut bacteria, necessitating new therapies.

Related Experiment Videos

Area of Science:

  • Hepatology
  • Immunology
  • Gastroenterology

Background:

  • Primary sclerosing cholangitis (PSC) is a chronic inflammatory liver disease.
  • It involves bile duct destruction and fibrosis, leading to complications like cirrhosis and cholangiocarcinoma.
  • Current therapies do not alter the disease's natural history, and its pathogenesis remains poorly understood.

Purpose of the Study:

  • To explore the potential causes and immune system dysregulation in PSC.
  • To understand the link between PSC and inflammatory bowel disease (IBD).
  • To highlight the need for better understanding to develop new treatments.

Main Methods:

  • Review of existing literature on PSC pathogenesis.
  • Analysis of associations between PSC and IBD.
  • Discussion of immune system involvement, including innate immunity and bacterial components.
  • Consideration of genetic factors and susceptibility loci.

Main Results:

  • PSC pathogenesis is rudimentary, but associations with IBD suggest causal links.
  • Male predominance and lack of a specific auto-antigen suggest immune dysregulation over classic autoimmunity.
  • Innate immune activation by gut bacteria delivered via the portal vein is a likely mechanism.
  • Inflammation leads to lymphocyte recruitment, bile duct injury, and strictures.

Conclusions:

  • PSC may result from immune dysregulation, possibly triggered by gut bacteria.
  • Further research into PSC's basic mechanisms is crucial for developing effective therapies.
  • Understanding the interplay between the gut microbiome, immune system, and liver is key.