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Related Concept Videos

Hepatitis01:25

Hepatitis

Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Viral Hepatitis I: Introduction01:28

Viral Hepatitis I: Introduction

Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...
Chronic Pancreatitis I: Introduction01:24

Chronic Pancreatitis I: Introduction

The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Chronic Pancreatitis I: Introduction01:25

Chronic Pancreatitis I: Introduction

Chronic pancreatitis is a long-standing, relapsing inflammation of the pancreas, characterized by irreversible damage to the gland. It results in progressive destruction of the pancreatic parenchyma, fibrosis, and eventual loss of both exocrine and endocrine function. The disease may evolve gradually after multiple episodes of acute pancreatitis or develop independently.EtiologyChronic pancreatitis can arise from a variety of causes:Alcohol use is the leading cause, accounting for 70–80% of...

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Related Experiment Video

Updated: Jul 9, 2026

The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
09:03

The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice

Published on: February 3, 2012

[Autoimmune hepatitis and autoimmune cholangitis].

H P Dienes1

  • 1Institut für Pathologie der Universität zu Köln, 50924 Köln.

Verhandlungen Der Deutschen Gesellschaft Fur Pathologie
|November 27, 2007
PubMed
Summary

Autoimmune liver diseases like autoimmune hepatitis, primary biliary cirrhosis, and primary sclerosing cholangitis involve immune system attacks on the liver and bile ducts. Diagnosis relies on scoring systems and histopathology due to a lack of specific tests.

Area of Science:

  • Hepatology and Immunology
  • Gastroenterology

Context:

  • Autoimmune liver diseases (ALD) include autoimmune hepatitis (AIH), primary biliary cirrhosis (PBC), and primary sclerosing cholangitis (PSC).
  • AIH is a chronic, progressive liver disease driven by autoimmune mechanisms, primarily involving CD4+ T-helper cells.
  • The diagnosis of ALD often requires a comprehensive approach, including histopathology and scoring systems, due to the absence of universally specific diagnostic markers.

Purpose:

  • To review the current understanding and diagnostic approaches for autoimmune liver diseases.
  • To highlight the role of histopathology in diagnosing AIH, PBC, and PSC.
  • To discuss the diagnostic challenges and proposed definitions for entities like autoimmune cholangitis.

Summary:

  • Autoimmune hepatitis (AIH) is characterized by immune-mediated liver cell destruction, with diagnosis confirmed via scoring systems incorporating histopathology.

More Related Videos

Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms
11:36

Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms

Published on: May 29, 2020

Related Experiment Videos

Last Updated: Jul 9, 2026

The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
09:03

The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice

Published on: February 3, 2012

Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms
11:36

Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms

Published on: May 29, 2020

  • Primary biliary cirrhosis (PBC) involves autoimmune destruction of bile ducts; liver biopsy aids diagnosis, especially in AMA-negative cases.
  • The autoimmune basis of primary sclerosing cholangitis (PSC) remains debated, though histopathology is crucial for diagnosing small duct PSC and excluding other conditions.

    • Impact:

    • Improved diagnostic accuracy for autoimmune liver diseases through integrated clinical, serological, and histopathological assessments.
    • Clarification of diagnostic criteria and the role of histopathology in differentiating AIH, PBC, and PSC.
    • Foundation for further research into the pathogenesis and precise classification of autoimmune liver diseases, including the controversial entity of autoimmune cholangitis.