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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...
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...

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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

Current topics in autoimmune hepatitis.

Luigi Muratori1, Paolo Muratori, Alessandro Granito

  • 1Department of Clinical Medicine, Alma Mater Studiorum - University of Bologna, Policlinico Sant'Orsola-Malpighi, Padiglione 11, Bologna, Italy. luigi.muratori@unibo.it

Digestive and Liver Disease : Official Journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
|July 10, 2010
PubMed
Summary
This summary is machine-generated.

Autoimmune hepatitis advancements include simplified diagnostics and molecularly identified targets. Novel treatments and insights into regulatory T cells offer new hope for this chronic liver disease.

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Area of Science:

  • Hepatology
  • Immunology
  • Internal Medicine

Background:

  • Autoimmune hepatitis is a chronic liver disease with unknown causes, marked by interface hepatitis, high immunoglobulin levels, and autoantibodies.
  • Recent years have seen significant progress in understanding and managing this condition.

Purpose of the Study:

  • To summarize recent advancements in autoimmune hepatitis research.
  • To highlight progress in diagnostics, treatment, and understanding of the disease's mechanisms.

Main Methods:

  • Review of clinical and basic research findings in the last decade.
  • Analysis of new diagnostic criteria, treatment strategies, and immunological insights.

Main Results:

  • Simplified diagnostic criteria and definition of complete response (normalized transaminases) have been established.
  • Molecular targets for key autoantibodies (anti-liver cytosol antibody type 1, anti-soluble liver antigen, anti-actin antibodies) have been identified.
  • New insights include de novo autoimmune hepatitis post-transplantation, overlapping syndromes, novel treatments (cyclosporine, mycophenolate mofetil, budesonide), the role of regulatory T cells, and new animal models.

Conclusions:

  • Significant progress has been made in autoimmune hepatitis diagnosis, treatment, and understanding.
  • Ongoing research into immunological mechanisms and novel therapies promises improved patient outcomes.