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

What is the Immune System?

Overview

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Related Experiment Video

Updated: Jun 20, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
10:27

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Autoimmunity and diet.

Nadine Cerf-Bensussan1

  • 1INSERM U793, Université Paris Descartes, Faculté de Médecine, Paris, France. nadine.cerf-bensussan@inserm.fr

Nestle Nutrition Workshop Series. Paediatric Programme
|August 28, 2009
PubMed
Summary
This summary is machine-generated.

Dietary antigens and autoimmunity share immune mechanisms. Studies on IPEX syndrome and celiac disease reveal how regulatory T cells and gluten exposure impact immune tolerance, with potential protective roles for factors like vitamin A.

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Area of Science:

  • Immunology
  • Gastroenterology
  • Genetics

Background:

  • The relationship between diet and autoimmunity is complex and debated.
  • Mechanisms controlling tolerance to dietary antigens overlap with those in autoimmunity.
  • Two model diseases, IPEX syndrome and celiac disease, illustrate these links.

Purpose of the Study:

  • To explore the intricate connections between dietary antigens and autoimmune diseases.
  • To highlight the roles of regulatory T cells and specific dietary components in immune tolerance.
  • To discuss the implications for understanding and potentially preventing autoimmunity.

Main Methods:

  • Focus on IPEX syndrome (caused by FOXP3 gene mutations) and celiac disease (triggered by gluten).
  • Review of existing literature on immune responses to dietary proteins and self-antigens.
  • Analysis of regulatory T cell function in maintaining tolerance.

Main Results:

  • FOXP3+ regulatory T cells are crucial for controlling reactivity to self-antigens and dietary proteins.
  • Gluten exposure in celiac disease triggers intestinal inflammation and is linked to extra-intestinal autoimmunity.
  • Impaired immunoregulatory mechanisms contribute to intestinal autoimmunity.

Conclusions:

  • Immune tolerance to dietary antigens and autoimmunity are closely linked through shared mechanisms.
  • Understanding these pathways in diseases like IPEX and celiac disease offers insights into broader autoimmune conditions.
  • Dietary factors like vitamin A and breastfeeding may offer protection, but their role in preventing autoimmunity requires further investigation.