Synergic interactions between polyphenols and gut microbiota in mitigating inflammatory bowel diseases

Area of Science:

• Gastroenterology
• Microbiology
• Nutrition Science

Background:

• Inflammatory bowel diseases (IBD) are chronic gut inflammation with complex origins.
• Dietary factors, particularly polyphenols, and gut microbiota play crucial roles in IBD etiology.
• The interplay between polyphenols, gut microbiota, and immune function is key to IBD pathogenesis.

Purpose of the Study:

• To review the synergistic interactions between polyphenols and gut microbiota in alleviating IBD.
• To explore the mechanisms by which polyphenols and their microbial metabolites mitigate IBD symptoms.
• To discuss current trends and future directions in IBD management involving these interactions.

Main Methods:

• Literature review focusing on the role of polyphenols and gut microbiota in IBD.
• Analysis of studies investigating polyphenol metabolism by gut microbiota.
• Examination of research on the anti-inflammatory mechanisms of polyphenols and their metabolites.

Main Results:

• Polyphenols enhance gut microbiota diversity and beneficial bacteria abundance, inhibiting pathogens.
• Microbial catabolism of polyphenols yields potent anti-inflammatory metabolites.
• Polyphenols and metabolites reduce oxidative stress, inflammatory cytokines (TNF-α, IL-6, IL-8, IL-1β), suppress NF-κB, upregulate Nrf2, and protect gut barrier.

Conclusions:

• The synergistic action of polyphenols and gut microbiota offers a promising avenue for IBD management.
• Further research into novel microbial metabolites and their specific roles in IBD is warranted.
• Understanding these interactions can lead to more effective IBD prevention and treatment strategies.