粉防己碱对瘢痕成纤维细胞DNA和胶原合成的影响

目的探讨粉防己碱对瘢痕成纤维细胞DNA和胶原合成的影响.方法以体外培养的人瘢痕成纤维细胞为实验模型,将粉防己碱(5～80mg/L)加入细胞培养液中进行干预并与对照组比较,用3H-TdR掺入法和3H-脯氨酸掺入法分别测定各组瘢痕成纤维细胞3H-TdR掺入值与3H-脯氨酸掺入值,以反映其DNA和胶原合成水平的变化.结果粉防己碱预处理浓度由5mg/L升至80mg/L时(1)瘢痕成纤维细胞3H-TdR掺入值(min-1)由对照组的1740±165分别降至1162±226、412±82,抑制率达76.32%,组间差异有非常显著意义(P＜0.01);(2)瘢痕成纤维细胞3H-脯氨酸掺入值(min-1)由对照组的1126±193分别降至535±141、341±89,抑制率达69.71%,组间差异有非常显著意义(P＜0.01).结论粉防己碱对体外培养的瘢痕成纤维细胞DNA和胶原合成具有抑制作用,呈剂量依赖关系,具有防治增生性瘢痕的应用前景.

Effects of tetrandrine on the synthesis of collagen and scar-derived fibroblast DNA

OBJECTIVE: To investigate the effects of tetrandrine on the synthesis of collagen and scar derived fibroblast DNA. METHODS: Scar-derived human fibroblasts were cultured in vitro. The changes in the levels of the synthesis of collagen and DNA of the fibroblasts were represented by the incorporation values of (3)H-TdR and (3)H-proline into the cells. Tetrandrine was added to the culture media of the cells, and its effects were studied. RESULTS: When the concentration of added tetrandrine increased from 5 mg/L to 80 mg/L, The (3)H-TdR values in scar-derived fibroblasts were 1162 plus minus 226 and 412 plus minus 82, respectively while that in control group was 1740 plus minus 165, showing an inhibition rate of 76.32%, and the difference (P < 0.01). In addition, the (3)H-proline incorporation values in the cells were 535 plus minus 141 and 341 plus minus 89, respectively, while that in control group was 1126 plus minus 193, with the inhibition rate of 69.71%, showing significant difference (P < 0.01). CONCLUSION: The synthesis of DNA and collagen in cultured scar-derived fibroblasts could be inhibited by tetrandrine in dose-dependent pattern. Tetrandrine might be a potential agent for the prevention and treatment of proliferative scars.