2021
DOI: 10.3390/jcm10215027
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Synovial Fluid Cytokines, Chemokines and MMP Levels in Osteoarthritis Patients with Knee Pain Display a Profile Similar to Many Rheumatoid Arthritis Patients

Abstract: Background: There are currently no effective disease-modifying drugs to prevent cartilage loss in osteoarthritis and synovial fluid is a potentially valuable source of biomarkers to understand the pathogenesis of different types of arthritis and identify drug responsiveness. The aim of this study was to compare the differences between SF cytokines and other proteins in patients with OA (n = 21) to those with RA (n = 27) and normal knees (n = 3). Methods: SF was obtained using ultrasound (US) guidance and an ex… Show more

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Cited by 24 publications
(22 citation statements)
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“…The elevated levels of IL-1β, IL-6, and TNF-α, as well as of MMPs, found in the SF of both OA and RA patients confirmed their important role in the pathogenesis of these joint diseases [ 12 , 32 ]. Therefore, an excess of these pro-inflammatory mediators and enzymes in SF can affect chondrocyte homeostasis and induce the production of other cytokines and matrix-degrading enzymes; in addition, they also inhibit the synthesis of proteoglycans and type II collagen, thereby causing cartilage degradation in OA and RA [ 8 , 32 ].…”
Section: Discussionmentioning
confidence: 93%
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“…The elevated levels of IL-1β, IL-6, and TNF-α, as well as of MMPs, found in the SF of both OA and RA patients confirmed their important role in the pathogenesis of these joint diseases [ 12 , 32 ]. Therefore, an excess of these pro-inflammatory mediators and enzymes in SF can affect chondrocyte homeostasis and induce the production of other cytokines and matrix-degrading enzymes; in addition, they also inhibit the synthesis of proteoglycans and type II collagen, thereby causing cartilage degradation in OA and RA [ 8 , 32 ].…”
Section: Discussionmentioning
confidence: 93%
“…SF is mainly involved in the maintenance and health of the articular cartilage. It has been observed that chondrocyte metabolism is deeply influenced by the specific composition of SF [ 12 , 14 ]. This evidence stimulated an increasing interest in comprehending the exact effect of the SF microenvironment in cartilage homeostasis.…”
Section: Discussionmentioning
confidence: 99%
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“…By comparing 16 biomarkers in the SF of patients with OA and RA, the authors showed that the level of only six biomarkers was significantly higher in SF than active RA compared to OA: TNF-α, IL-1-β IL-7, MMP-1, MMP-2 and MMP-3. The level of MMP- 9 in SF did not differ in patients with OA and RA [ 19 ].…”
Section: Discussionmentioning
confidence: 99%
“…The main pro-inflammatory cytokines in the pathogenesis of OA are interleukin-1β (IL-1β)—associated with cartilage degradation, tumor necrosis factor α (TNFα)—controlling the cascade of inflammatory processes and IL-6—one of the main regulatory cytokines in inflammatory reactions in the body. IL-1β and TNFα are produced by chondrocytes, osteoblasts, synovial fibroblasts and mononuclear cells (lymphocytes, monocytes) [ 78 ]. These cytokines regulate the production of other pro-inflammatory and catabolic factors.…”
Section: Potential Soluble Biomarkers Of Osteoarthritismentioning
confidence: 99%