粉防己碱对翼状胬肉成纤维细胞增生作用的研究(英文)

目的:观察粉防己碱(tetrandrine,Tet)对体外培养人翼状胬肉成纤维细胞(human pterygium fibroblast,HPF)增殖的影响,研究粉防己碱对翼状胬肉成纤维细胞增殖的作用,寻找辅助治疗翼状胬肉的新方法。方法:用不同浓度(0 ～160μmol/L)Tet作用体外培养的HPF,观察24 ～96h Tet对HPF的影响。MTT法检测细胞生长抑制率,免疫细胞化学法检测Tet干预前后HPF增殖细胞核抗原(PCNA)的表达情况。结果:在Tet20, 40, 80, 160μmol/L浓度作用24 ～72h范围内,可剂量和时间依赖性的抑制HPF增生(P<0.05)。Tet干预后PCNA蛋白表达下降,当Tet的浓度在20 ～160μmol/L范围内能浓度依赖性地抑制细胞表达PCNA(P<0.05)结论:Tet可显著抑制翼状胬肉成纤维细胞增生,在一定浓度和时间范围内抑制作用呈剂量与时间依赖性。但在高浓度时( >160μmol/L)可能存在细胞毒性作用。

Effect of tetrandrine on proliferation of human pterygium fibroblasts

AIM: To investigate the effect of tetrandrine (Tet) on proliferation of human pterygium fibroblasts (HPF) in vitro and to search for a new method to prevent the recurrence after pterygium surgery.METHODS: With different concentrations (0 to 160μmol/L) of Tet acting on HPF cultured in vitro, the impact was observed at 24, 48, 72 hours respectively after Tet intervention. The MTT method was used to assay the biologic activities of Tet and inhibitive rate of cell growth. The expression of proliferating cell nuclear antigen (PCNA) in each group was detected by immunohistoche-mistry before and after Tet intervention.RESULTS:With different concentrations of 20, 40, 80 and 160μmol/L and acting for 24 to 72 hours, Tet could inhibit the proliferation of HPF in a dose- and time-dependent manner (P<0.05). After the intervention of Tet, the expression of PCNA protein declined. When the concentration of Tet was in the range of 20 to 160μmol/L, it was able to inhibit the expression of PCNA in a concentration-dependent manner (P<0.05).CONCLUSION:Tet could significantly inhibit the proliferation of pterygium fibroblasts, and the inhibitive action was in a dose- and time-dependent manner within a certain range of concentration. But in high concen-tration (>160μmol/L), Tet would have cytotoxity.