Table 7 Correlation between biomarkers percentual change (Δ) and percentual change of radiological score (Δ) in the subsequent year, in PTOA affected horses only
|  | Δ mean radiographical score of T (x+1)−T (x) | |||
|---|---|---|---|---|
T (x) = T1 | T (x) = T2 | T (x) = T3 | ||
ΔIL-1b of T (x)−T (x−1) | Serum | – | – | – |
Synovial Fluid | – | – | – | |
ΔIL-6 of T (x)−T (x−1) | Serum | – | – | r  = 0.42 (p  = 0.041) |
Synovial Fluid | – | – | – | |
ΔTNF-a of T (x)−T (x−1) | Serum | – | – | – |
Synovial Fluid | – | r  = 0.38 (p  = 0.058) | r  = 0.435 (p  = 0.030) | |
ΔCOMP of T (x)−T (x−1) | Serum | r  = 0.39 (p  = 0.053) | – | – |
Synovial Fluid | – | – | – | |
ΔCTXII of T (x)−T (x−1) | Serum | – | – | – |
Synovial Fluid | – | – | – | |