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. 2018 Dec 29;24(1):109. doi: 10.3390/molecules24010109

Figure 2.

Figure 2

Correlation between IL-6 and MMP-1 (a) and MMP-3 (b) in patients with osteoarthritis. IL-6 and MMP levels in synovial fluid (SF) were measured by immunoassay. Natural logarithms (LN) of the SF concentrations of IL-6 and MMPs were calculated in order to have normally distributed variables for the Pearson correlation analysis. In the Figure, correlation coefficients (r) and p values are given. Synovial fluid samples were collected from 100 patients with knee OA [BMI 29.7 (8.3) kg/m2, age 72 (14) years, median (IQR); 62/38 females/males].