The gut in spondyloarthritis

Area of Science:

• Immunology
• Gastroenterology
• Rheumatology

Background:

• The link between the bowel and spondyloarthritis (SpA) is well-established.
• Recent research has intensified focus on this gut-joint axis in SpA pathogenesis.

Purpose of the Study:

• To review and synthesize recent findings on the association between bowel inflammation and spondyloarthritis.
• To explore the role of the gut microbiota and immune pathways in SpA.

Main Methods:

• Review of recent scientific literature and studies.
• Analysis of associations between bowel inflammation markers and SpA disease activity.
• Investigation of immune cell migration pathways (IL-23/Th17) originating from the gut.

Main Results:

• Bowel inflammation correlates with SpA joint disease activity and sacroiliac inflammation.
• Elevated biomarkers for gut inflammation (S100 proteins) and specific antibodies (anti-flagellin) are observed.
• Gut-derived IL-23/Th17 pathway activation, involving lymphoid cell migration, is implicated in SpA.
• Bowel microbiota dysbiosis is linked to IL-23 production and inflammatory responses.

Conclusions:

• The gut plays a critical role in the pathogenesis of spondyloarthritis.
• Gut microbiota dysbiosis and associated immune activation present potential therapeutic targets for SpA.