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Antigen sampling in the fish intestine.

Guro Løkka1, Erling Olaf Koppang1

  • 1Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Ullevålsveien 72, 0454 Oslo, Norway.

Developmental and Comparative Immunology
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Summary

Antigen uptake in the gastrointestinal tract is crucial for immune responses and homeostasis. This review examines fish intestinal antigen sampling mechanisms and barrier functions.

Keywords:
Antigen uptakeEpithelial barrierIntestineLeukocyteTeleost

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Area of Science:

  • Immunology
  • Gastroenterology
  • Comparative Physiology

Background:

  • The gastrointestinal tract is a primary route for pathogen entry in both mammals and fish.
  • Epithelial surfaces balance barrier function with nutrient absorption, necessitating controlled antigen uptake.
  • Understanding antigen sampling is key to intestinal homeostasis and immune regulation.

Purpose of the Study:

  • To review studies on antigen uptake mechanisms in fish gastrointestinal tracts.
  • To consolidate current knowledge on the fish intestinal barrier and its anatomical structure.
  • To highlight the importance of antigen sampling in fish immunity.

Main Methods:

  • Literature review of existing studies on fish gastrointestinal immunology.
  • Analysis of anatomical data related to the fish intestinal barrier.
  • Synthesis of experimental findings on antigen sampling cells and mechanisms in fish.

Main Results:

  • Antigen uptake influences tolerance, immune responses, and infection susceptibility in the gut.
  • Fish gastrointestinal tract shares functional similarities with mammals regarding antigen sampling.
  • Specific cells and mechanisms involved in fish intestinal antigen sampling are being elucidated.

Conclusions:

  • The fish intestinal barrier plays a critical role in managing antigen exposure.
  • Further research into fish antigen sampling mechanisms is vital for understanding gut immunity.
  • This review provides a foundation for future studies on fish gastrointestinal health and disease.