Emerging Roles of Periodontal Pathogen-Derived Outer Membrane Vesicles in NAFLD.

Area of Science:

• Hepatology and Periodontology
• Microbiology and Immunology

Background:

• Nonalcoholic fatty liver disease (NAFLD) incidence is rising globally, posing a significant socioeconomic burden.
• Periodontitis, a common chronic inflammatory disease, is linked to systemic conditions, including liver disease.
• The specific role of outer membrane vesicles (OMVs) from periodontal pathogens in NAFLD pathogenesis remains unclear.

Purpose of the Study:

• To review the progression and pathogenesis of NAFLD.
• To elucidate the multidimensional relationship between periodontal disease and NAFLD.
• To highlight the role of periodontal pathogen-derived OMVs in NAFLD development.

Main Methods:

• Comprehensive literature review.
• Analysis of NAFLD progression and pathogenesis.
• Examination of the link between periodontal disease and NAFLD.
• Investigation into the functions of periodontal pathogen OMVs.

Main Results:

• Periodontal pathogen-derived OMVs stimulate Kupffer cells, leading to inflammatory factor production.
• OMVs induce the activation of Hepatic stellate cells, promoting NAFLD.
• The systemic dissemination pathway of OMVs (e.g., via bloodstream or oral-gut-liver axis) requires further investigation.

Conclusions:

• Periodontal pathogen OMVs are implicated in NAFLD development.
• Understanding OMVs' systemic distribution is crucial for targeted therapies.
• Developing clinical guidelines for managing OMVs in NAFLD patients with periodontitis is necessary.