Association between gut microbiota composition and physical functioning in patients with knee osteoarthritis: a...

Area of Science:

• Microbiome research
• Immunology
• Orthopedics

Background:

• Gut dysbiosis and systemic inflammation are implicated in knee osteoarthritis (OA) pathogenesis.
• The relationship between specific gut microbes and physical function in OA patients is not well understood.

Purpose of the Study:

• To investigate the association between gut microbiota composition and clinical/functional outcomes in mild to moderate knee OA.
• To identify specific bacterial taxa linked to physical performance and OA symptoms.

Main Methods:

• Analysis of fecal samples and clinical data from 18 OA patients and 20 controls.
• Machine learning approach to identify discriminating microbial taxa.
• Correlation analysis to link microbial genera with clinical and functional parameters.

Main Results:

• OA patients exhibited altered gut microbiota diversity compared to controls.
• Machine learning identified Blautia luti, Collinsella aerofaciens, and Butyricicoccus faecihominis as key discriminating taxa.
• Specific gut bacterial species were significantly associated with physical performance and pain levels in OA.

Conclusions:

• This study provides novel evidence linking specific gut bacteria to physical functioning and symptoms in knee OA.
• Findings suggest the gut-joint axis plays a role in OA, highlighting potential targets for microbiota-based interventions.