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Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms
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Published on: May 29, 2020

Immune-mediated liver injury.

Bertus Eksteen1, Simon C Afford, Stephen J Wigmore

  • 1Liver Research Group, MRC Centre for Immune Regulation, Institute of Biomedical Research, University of Birmingham Medical School, Birmingham, United Kingdom.

Seminars in Liver Disease
|November 6, 2007
PubMed
Summary

Immune-mediated liver injury involves "bystander cells" that amplify inflammation and damage. Understanding these complex cellular interactions is key to developing new therapies for liver diseases.

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

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Published on: May 29, 2020

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
11:06

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro

Published on: January 31, 2022

Area of Science:

  • Immunology
  • Hepatology
  • Pathogenesis of Liver Disease

Background:

  • Immune-mediated liver injury shares common pathways across diseases with different pathogeneses.
  • Both autoimmune and viral hepatitis involve T cell-mediated destruction of liver cells (hepatocytes or cholangiocytes).
  • While antigen-specific mechanisms play a role, immune-mediated injury is central, especially when specific antigens are less defined.

Purpose of the Study:

  • To elucidate the pathogenesis of immune-mediated liver injury.
  • To understand the role of "bystander cells" and local microenvironment in liver inflammation.
  • To identify potential therapeutic targets for liver diseases.

Main Methods:

  • The study focuses on the interactions between epithelial cells, stromal cells, and leukocytes within the liver microenvironment.
  • It examines the recruitment, retention, and survival mechanisms of effector leukocytes.
  • Analysis involves understanding the influence of the local cytokine milieu on these interactions.

Main Results:

  • "Bystander cells," activated by the local microenvironment, are major contributors to liver injury.
  • These cells amplify effector responses by recruiting various immune cells, including natural killer cells, macrophages, neutrophils, eosinophils, and platelets.
  • Immune-mediated liver injury is perpetuated by cycles of inflammation and damage driven by sustained leukocyte activity.

Conclusions:

  • Complex interactions among liver cells and infiltrating leukocytes, modulated by the cytokine microenvironment, drive immune-mediated liver injury.
  • Understanding these intricate cellular dynamics is crucial for advancing the treatment of liver diseases.
  • Targeting these interactions may offer novel therapeutic strategies for various liver conditions.