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Related Concept Videos

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...
Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not related to...
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...
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...
Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...
Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...

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Related Experiment Video

Updated: Jun 25, 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 liver diseases].

S Lüth1, C Weiler-Normann, C Schramm

  • 1I. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, Martinistrasse 52, 24046, Hamburg, Deutschland.

Der Internist
|February 20, 2009
PubMed
Summary
This summary is machine-generated.

Autoimmune hepatitis (AIH) is an immune-mediated liver disease affecting women more often than men. Prompt immunosuppressive treatment leads to good long-term outcomes for AIH, primary biliary cirrhosis (PBC), and primary sclerosing cholangitis (PSC).

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Area of Science:

  • Hepatology
  • Immunology
  • Gastroenterology

Context:

  • Autoimmune hepatitis (AIH) presents across all ages, predominantly in women, with varied symptoms from asymptomatic to acute liver failure.
  • AIH is diagnosed via liver biopsy showing lymphoplasmacellular infiltrates, elevated liver enzymes, and absent viral markers, alongside characteristic hypergammaglobulinemia and autoantibodies.
  • Primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) are immune-mediated bile duct diseases with distinct prognoses; PSC carries a risk of cholangiocarcinoma.

Purpose:

  • To outline the clinical presentation, diagnostic markers, and treatment strategies for autoimmune hepatitis (AIH).
  • To differentiate AIH from other immune-mediated liver diseases like PBC and PSC.
  • To describe the management of AIH, PBC, and PSC, emphasizing treatment response and long-term prognosis.

Summary:

  • AIH is characterized by specific biopsy findings, elevated IgG and autoantibodies, and responds well to corticosteroids for induction and azathioprine for maintenance of remission.
  • Effective immunosuppressive therapy for AIH leads to favorable long-term prognosis and supports the diagnostic criteria.
  • Ursodeoxycholic acid is the primary treatment for PBC and PSC, aiming to slow disease progression and improve biochemical markers.

Impact:

  • Early diagnosis and appropriate immunosuppressive therapy significantly improve the long-term prognosis for patients with autoimmune hepatitis.
  • Understanding the distinct characteristics and treatment approaches for AIH, PBC, and PSC is crucial for effective patient management.
  • This information aids clinicians in diagnosing and managing immune-mediated liver diseases, potentially preventing complications like cirrhosis and cholangiocarcinoma.