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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

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Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
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Type I Diabetes I: Introduction01:12

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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...
Hypersensitivities01:30

Hypersensitivities

Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...

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Related Experiment Video

Updated: May 29, 2026

Interrogating Individual Autoreactive Germinal Centers by Photoactivation in a Mixed Chimeric Model of Autoimmunity
11:12

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Autoimmunity.

Edecio Cunha-Neto1, Priscila Camillo Teixeira, Luciana Gabriel Nogueira

  • 1Laboratório de Imunologia, Instituto do Coração, Hospital das Clínicas, Universidade de São Paulo, Brazil.

Advances in Parasitology
|September 3, 2011
PubMed
Summary
This summary is machine-generated.

Chronic Chagas disease involves autoimmune responses, not just parasite presence. Autoimmunity likely contributes to tissue damage, particularly in the heart, alongside Trypanosoma cruzi-specific immunity.

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Last Updated: May 29, 2026

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11:12

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Published on: April 11, 2019

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12:36

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Pathogenesis

Background:

  • Chronic Chagas disease pathogenesis remains complex, with early theories suggesting autoimmune tissue damage due to Trypanosoma cruzi scarcity in lesions.
  • While T. cruzi persists, inflammatory damage may not correlate with local parasite load, prompting investigation into other mechanisms.

Purpose of the Study:

  • To critically review the evidence for autoimmune phenomena in human and animal models of Chagas disease.
  • To explore the potential pathogenetic role of autoimmunity, particularly in chronic Chagas disease cardiomyopathy.

Main Methods:

  • Review of existing literature on autoimmune responses in Chagas disease.
  • Analysis of studies involving autoantibodies, self-reactive T cells, and experimental models of autoimmunity.

Main Results:

  • Significant evidence supports the presence of autoantibodies and self-reactive T cells cross-reactive with T. cruzi antigens.
  • Experimental models show lesions upon immunization with T. cruzi antigens or lymphocyte transfer, and amelioration with antigen tolerance.

Conclusions:

  • Both autoimmune responses and T. cruzi-specific immunity likely contribute to chronic Chagas disease cardiomyopathy.
  • Post-infectious autoimmunity may be a common finding in persistent infections, including Chagas disease.