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Research Article

Serum and Synovial Fluid Levels of CCL18 are Correlated with Radiographic Grading of Knee Osteoarthritis


BackgroundChemokines are involved in the pathogenesis of osteoarthritis (OA). CCL18, a member of the chemokines family, is observed in synovial fluid (SF) of OA patients. The aim of this study was to determine the association between CCL18 levels in serum and SF with radiographic knee OA.Material/MethodsThis study was conducted in a population of 308 patients with knee OA. The radiological knee OA was graded by the Kellgren-Lawrence grading system.ResultsSerum levels of CCL18 in knee OA patients were markedly higher than those in healthy controls. Serum and SF levels of CCL18 increased with the severity of KL grades and were correlated with disease severity.ConclusionsThe CCL18 levels in serum and SF are correlated with the severity of OA.