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02-11-2017 | Osteoarthritis | Review | Article

Immune Contributions to Osteoarthritis

Journal:
Current Osteoporosis Reports

Authors: Erika Barboza Prado Lopes, Adrian Filiberti, Syed Ali Husain, Mary Beth Humphrey

Publisher: Springer US

Abstract

Mounting evidence supports a role of low-grade inflammation in the pathophysiology of osteoarthritis (OA). We review and discuss the role of synovitis, complement activation, cytokines, and immune cell population in OA.
Using newer imaging modalities, synovitis is found in the majority of knees with OA. Complement activation and pro-inflammatory cytokines play a significant role in the development of cartilage destruction and synovitis. Immune cell infiltration of OA synovial tissue by sub-populations of T cells and activated macrophages correlates with OA disease progression and pain.
The innate and acquired immune system plays a key role in the low-grade inflammation found associated with OA. Targets of these pathways my hold promise for future disease-modifying osteoarthritis drugs (DMOADs).

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