Fig. 3
Effect of AS IV on IL-1β-induced NP ECM degeneration. a–e MMP-13, aggrecan, ADAMTS-4, and COL II expression was evaluated by Western blotting and then quantified. f, g Immunofluorescence staining of aggrecan (f) and MMP-13 (g) in the human NPCs. Scale bar: 50 μm. Data are expressed as means ± SD. ***P < 0.001 versus control group. ###P < 0.001 and ##P < 0.01 versus IL-1β group