Fig. 7From: TGF-β1 reduces the oxidative stress-induced autophagy and apoptosis in rat annulus fibrosus cells through the ERK signaling pathwayThe antioxidants induction TGF-β1 in annulus fibrosus cells. a The level of intracellular H2O2. b GPx-1 activity. c The expression of GPx-1. TGF-β1 transforming growth factor-β1, H2O2 hydrogen peroxide, GPx-1 glutathione peroxidase, n.s not significant; *P < 0.05; **P < 0.001Back to article page