The effects of β-ecdysterone on the PI3K/AKT signal pathway in the chondrocytes. A. The expression level in chondrocytes of PI3K was evaluated by qRT-PCR. B. The expression level in chondrocytes of PI3K, p-AKT1, AKT1, p-mTOR, mTOR, p70S6K, and GAPDH was determined by Western Blot (*P < 0.05, vs. Control, **P < 0.01, vs. Control).