Gut immunophysiology: a gastroenterologist's view with emphasis on pathophysiology

Area of Science:

• Immunology
• Gastroenterology

Background:

• The gastrointestinal tract possesses a specialized mucosal immunologic system.
• This system operates largely independently of the systemic immune response.
• It is regulated by antigenic stimuli and involves unique antibody transport mechanisms.

Purpose of the Study:

• To provide a comprehensive overview of the immune functions of the gastrointestinal tract.
• To review the immunophysiology and immunomorphology of the gut immune system.
• To discuss new aspects of secretory immunity and its clinical relevance.

Main Methods:

• Literature review of existing knowledge on gastrointestinal immunology.
• Discussion of immune regulation, including helper and suppressor systems.
• Analysis of clinical manifestations of immunodeficiency syndromes and food allergy.

Main Results:

• The mucosal immune system is distinct, with specialized antibody secretion and function.
• Gut immunity involves complex regulation and interaction with the systemic immune response.
• New insights into secretory immunity and its role in health and disease are presented.

Conclusions:

• The gastrointestinal immune system is a critical component of overall immunity.
• Understanding its unique mechanisms is vital for addressing immunodeficiency and allergic conditions.
• Further research in both systemic and mucosal immunology holds significant promise.