Peptidoglycan in osteoarthritis synovial tissue is associated with joint inflammation
Authors' conclusion
Peptidoglycan is commonly found in synovial tissue from patients undergoing TKA. Our data indicate that PG may play an important role in inflammatory synovitis, particularly in patients who undergo TKA at a relatively younger age.
Study context
- Population
- OA patients undergoing primary total knee arthroplasty (TKA), none with history of infection
- Participants
- 56 patients
- Outcome
- Presence of PG in synovial tissue and its association with inflammation and patient reported outcomes
- Follow-up
- At the time of primary TKA
Methodological detailsimmunohistochemistry and immunofluorescence microscopy, ex vivo fibroblast stimulation
- Immunohistochemistry and immunofluorescence microscopy
- Ex vivo fibroblast stimulation
Main finding
As reported in the abstract
PG-positive synovial tissue by IHC
Samples positive for peptidoglycan (PG) by immunohistochemistry (IHC)
33 of 56
59%
Observational data: associations, not effects.
Further findings
PG and age at TKA
- Significant inverse correlation between PG and age at TKA; younger age associated with higher PG levels
Primary human fibroblasts stimulated with PG
- Secreted high levels of IL-6, consistent with ex vivo findings
Original publication
Peptidoglycan in osteoarthritis synovial tissue is associated with joint inflammation. Arthritis Res Ther. Published 27 March 2024. doi:10.
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