The in vitro inhibitory effects of oridonin on proliferation of conjunctival fibroblasts after trabeculectomy in rabbit / 眼科

ABSTRACT

Objective To investigate inhibitory effects of Oridonin on the proliferation of cultured rabbit conjunctival fibroblast (RCF). Design Experimental study. Participants Cultured RCF obtained from filtering area after trabeculectomy. Methods Trabeculectomy was performed in rabbits. On day 7 after surgery, subconjunctival tissue from filtering area was obtained for culturing RCF in vitro. Cultured RCFs were exposed to different concentration Oridonin (5, 10, 20, 30, 40, and 50 ?mol?L-1) for 48h, respectively. The proliferation of RCF was investigated by MTT assay at different time points. Main Outcome Measures Optical density (OD) value of RCF and inhibitory rate of cell growth. Results OD values of each concentration Oridonin group (5, 10, 20, 30, 40, and 50 ?mol?L-1) were (0.402?0.013), (0.347?0.011), (0.293?0.015), (0.236?0.022), (0.184?0.023), and (0.125?0.014), respectively. These data showed a significant difference compared with the OD value (0.453?0.015) of control group without Oridonin (P=0.021-0.000). The inhibitory effects showed a significant difference in a dose-dependent manner (F=5.48, P=0.003). Oridonin (5, 10, 20, 30, 40 and 50 ?mol?L-1) sup-pressed the proliferation of RCF in vitro at rates of 11.26%, 23.40%, 35.32%, 47.90%, 59.38% and 72.41%, respectively. Conclusion Oridonin can inhibit the proliferation of cultured RCF obtained from filtering area. The effect is in a dose-dependent manner. This indicates that Oridonin is most likely to be a novel agent to prevent excessive scarring following glaucoma surgery.