Associations of serum citrate levels with knee structural changes and cartilage enzymes in patients with knee osteoarthritis.

Objective: The aim of this study was to investigate cross-sectional associations between serum levels of citrate and knee structural changes and cartilage enzymes in patients with knee osteoarthritis (OA).

Method: A total of 137 subjects with symptomatic knee OA (mean age 55.0 years, range 34-74, 84% female) were included.

Associations between serum IL-8 and knee symptoms, joint structures, and cartilage or bone biomarkers in patients with knee osteoarthritis.

Objective: The aim of this study was to investigate cross-sectional associations between serum levels of IL-8 and the above outcomes in patients with knee osteoarthritis (OA).

Methods: A total of 160 subjects with clinical knee OA were included. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and Lequesne index were used to assess the joint symptom.