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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

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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...
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Antibody Actions01:26

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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
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Defense Against Bacterial Pathogens01:31

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Gastritis-II: Pathophysiology01:17

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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.
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Related Experiment Video

Updated: Jan 13, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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The Antibody-Microbiota Interface in Autoimmune Diseases.

Solène Puechberty1, Delphine Sterlin1,2

  • 1Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Sorbonne Université, Inserm, CNRS, Paris, France.

Muscle & Nerve
|January 10, 2026
PubMed
Summary

The gut microbiome significantly influences immune responses, particularly secretory IgA (sIgA). Altered antibody-microbiota interactions are implicated in autoimmune diseases, offering potential therapeutic targets.

Keywords:
antibodyautoimmunityepitope spreadingmicrobiotamolecular mimicryneoepitopes

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Area of Science:

  • Immunology
  • Microbiology
  • Gastroenterology

Background:

  • The human gut microbiome plays a crucial role in shaping immune responses.
  • Secretory immunoglobulin A (sIgA) is a key regulator of intestinal homeostasis.
  • Emerging evidence highlights roles for secretory IgM and IgG in host-microbiota interactions.

Purpose of the Study:

  • To review the antibody-microbiota interface, focusing on how microbiota composition and diet influence sIgA.
  • To explore alterations in antibody-microbiota interactions in autoimmune diseases.
  • To discuss the potential of targeting these interactions for therapeutic development.

Main Methods:

  • Literature review integrating murine and human studies.
  • Analysis of factors influencing the gut microbiota ecosystem.
  • Examination of antibody-microbiota interactions in autoimmune disease contexts.

Main Results:

  • Microbiota and diet composition shape sIgA repertoire and binding capacity.
  • Antibody-microbiota interactions are dysregulated in autoimmune diseases.
  • Myasthenia gravis (MG) patients exhibit a unique microbial signature.

Conclusions:

  • Understanding antibody-microbiota interactions is vital for identifying microbial drivers of autoimmune diseases.
  • Targeting these interactions may lead to novel therapeutic strategies for conditions like MG.
  • Mechanisms such as molecular mimicry and epitope spreading warrant investigation in MG pathogenesis.