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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...
What is the Immune System?01:38

What is the Immune System?

Overview
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
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...
Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

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Granulocyte-dependent Autoantibody-induced Skin Blistering
12:23

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Bistability in autoimmune diseases.

Nicolas Rapin1, Erik Mosekilde, Ole Lund

  • 1Biotech Research and Innovation Centre and Bioinformatics Centre, University of Copenhagen, DK-2200 Copenhagen N, Denmark.

Autoimmunity
|January 20, 2011
PubMed
Summary
This summary is machine-generated.

Autoimmune diseases can create damaging positive feedback loops, shifting the body from a healthy state to an activated autoimmune state. Mathematical modeling shows transient immunosuppression can restore the healthy state.

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Published on: October 12, 2012

Interrogating Individual Autoreactive Germinal Centers by Photoactivation in a Mixed Chimeric Model of Autoimmunity
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12:36

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Area of Science:

  • Immunology
  • Mathematical Biology
  • Systems Biology

Background:

  • Autoimmune diseases involve host tissue damage, potentially amplifying immune responses.
  • Positive feedback loops in biological systems can lead to multiple stable states.

Purpose of the Study:

  • To mathematically model autoimmune disease dynamics.
  • To investigate the transition between healthy and autoimmune states.
  • To explore the potential of transient immunosuppression for recovery.

Main Methods:

  • Development of a mathematical model simulating autoimmune disease.
  • Analysis of system dynamics to identify stable steady states.
  • Simulation of triggering events and treatment interventions.

Main Results:

  • The model demonstrates two co-existing stable states: a healthy state and an autoimmune state with tissue damage.
  • A triggering event can shift the system from the healthy to the autoimmune state.
  • Transient immunosuppressive treatment can effectively return the system to the healthy state.

Conclusions:

  • Autoimmune diseases can be conceptualized as a system with distinct healthy and diseased stable states.
  • Mathematical modeling provides insights into disease progression and potential therapeutic strategies.
  • Targeted, transient interventions may be sufficient to reverse autoimmune conditions.