Table II.

Protein expression levels of chondrocytes in three groups, as measured by western blotting.

Protein	Expression in chondrocytes (densitometry, X/β-actin)
	Group A	Group B	Group C
Collagen II	0.34 (0.25–0.43)	0.56 (0.42–0.71)	0.68 (0.27–1.09)
Mmp-13	1.92 (1.49–2.34)	1.35 (1.12–1.57)	0.74 (0.54–1.15)
β-Catenin	0.95 (0.53–1.37)	0.89 (0.78–1.00)	0.47 (0.22–0.73)
Wnt-3a	0.62 (0.38–0.86)	0.34 (0.17–0.43)	0.23 (0.17–0.30)

Group A, injured exercise-induced osteoarthritis group; group B, normal exercise-induced osteoarthritis group; group C, control group; Mmp-13, matrix metalloproteinase 13; Wnt-3a, wingless-type MMTV integration site family member 3A.