The significance of infectious disease and microbiota in functional gastrointestinal disorders

Area of Science:

• Gastroenterology
• Microbiology
• Immunology

Background:

• Functional gastrointestinal disorders (FGID) were historically defined by a lack of organic abnormalities.
• Emerging evidence links chronic GI dysfunction to prior infections like gastroenteritis.
• Organic changes in gut epithelium, immune cells, and inflammatory markers are increasingly recognized in FGID.

Purpose of the Study:

• To explore the evolving understanding of FGID beyond functional definitions.
• To investigate the role of infections and subsequent organic changes in FGID development.
• To highlight the significance of gut microbiota alterations in FGID pathogenesis.

Main Methods:

• Review of recent scientific literature on FGID.
• Analysis of studies identifying organic changes post-infection.
• Examination of research utilizing advanced analytical methods for microbiota analysis.

Main Results:

• Chronic GI dysfunctions can arise from bacterial and viral infections.
• Specific organic alterations observed include changes in epithelial cells, immunocompetent cells, and inflammatory cytokines.
• Advancements in analytical techniques have revealed distinct alterations in the intestinal microbiota of FGID patients.

Conclusions:

• The definition of FGID is expanding to include underlying organic changes.
• Gut microbiota composition and enteric environment modifications are critical factors in FGID.
• Further research is warranted to understand the correlations between enteric changes and FGID clinical manifestations.