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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...
Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
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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.
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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...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
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The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
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Published on: February 3, 2012

Autoimmune hepatitis from the paediatric perspective.

Eve A Roberts1

  • 1Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, and Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada. eve.roberts@utoronto.ca

Liver International : Official Journal of the International Association for the Study of the Liver
|November 19, 2011
PubMed
Summary
This summary is machine-generated.

Autoimmune hepatitis (AIH) in children often presents acutely and differs from adult forms, with Type 2 AIH more common in younger patients. Immunosuppressive treatment is effective, though cures are rare, highlighting the need for early diagnosis and improved therapies.

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Area of Science:

  • Hepatology
  • Immunology
  • Pediatric Gastroenterology

Background:

  • Autoimmune hepatitis (AIH) is a significant autoimmune liver disease.
  • AIH is categorized into Type 1 (anti-smooth muscle antibodies) and Type 2 (anti-liver/kidney microsomal antibodies).
  • AIH presents differently in children compared to adults, often as acute disease.

Purpose of the Study:

  • To review the clinical aspects and management of autoimmune hepatitis in children.
  • To highlight differences in AIH presentation and patterns between pediatric and adult populations.
  • To discuss therapeutic interventions and outcomes for childhood AIH.

Main Methods:

  • Literature review of clinical research on autoimmune hepatitis since the 1960s.
  • Analysis of clinical manifestations and immunological subtypes of AIH in pediatric cohorts.
  • Examination of treatment responses and long-term outcomes, including complications like cirrhosis and liver transplantation.

Main Results:

  • Type 2 AIH, characterized by anti-liver/kidney microsomal antibodies, is more prevalent in children.
  • Children with AIH may exhibit autoimmune sclerosing cholangitis (ASC) or monogenic immune dysregulation disorders.
  • Immunosuppressive therapy with corticosteroids and azathioprine yields favorable responses, leading to stable remission in many pediatric cases.

Conclusions:

  • Childhood autoimmune hepatitis requires distinct diagnostic and management considerations compared to adults.
  • While immunosuppression is effective, achieving a complete cure remains challenging, necessitating ongoing research.
  • Early diagnosis and optimized treatment strategies are crucial for improving the prognosis of autoimmune hepatitis in children.