Ratio | OA | Control |
---|
 | (n = 15) | (n = 13) |
---|
IGF-I/GAPDH | 0.52 (0.49–0.56)a | 0.63 (0.38–0.71) |
IGF-II/GAPDH | 0.79 (0.74–0.94)a | 0.58 (0.39–0.94) |
TGF-β1/GAPDH | 0.76 ± 0.22 | 0.72 ± 0.09 |
COL1A1/GAPDH | 0.55 (0.47–0.59) | 0.00 (0.00–0.24)b |
COL1A2/GAPDH | 0.37 ± 0.04 | 0.22 ± 0.14c |
- aOA IGF-I/GAPDH versus OA IGF-II/GAPDH: p < 0.0003; bp < 0.0001; cp < 0.002. Parametric values are mean ± standard deviation. Non-parametric values are median (quartiles). COL1A, collagen type I alpha chain; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; IGF, insulin-like growth factor; OA, osteoarthritis; TGF-β1, transforming growth factor-β1.