目的运用构建好的重组慢病毒载体系统PLVX-MIR21-RNAi分别感染高、低侵袭性肝癌细胞HCCLM3和HepG2,并观察miR-21下调对其生长增殖和侵袭转移特性的影响及其分子机制研究。方法采用qPCR、CCK-8、Transwel肿瘤侵袭和Westermn blot 实验分别检测干扰miR-21表达对HCCLM3和HepG2细胞miR-21表达量、增殖抑制率、侵袭转移特性和PTEN、PDCD4和TPM1蛋白的表达量影响。结果HCCLM3转染组miR-21的表达量低于HepG2转染组(P<0.05);24 h 36 h、48 h时,HCCLM3未处理组增殖能力均明显高于HepG2未处理组(P<0.01),而HCCLM3转染组增殖抑制率均高于HepG2转染组(P<0.05);HCCLM3转染组细胞侵袭抑制率高于HepG2转染组(P<0.05);HCCLM3未处理组PTEN、PDCD4和TPM1蛋白表达低于HepG2未处理组(P<0.01)。此外,下调miR-21后,HCCLM3转染组PTEN PDCD4和TPM1蛋白表达水平均高于HepG2转染组(P <0.01)。结论miR-21 下调能有效抑制HCCLM3和HepG2细胞生长增殖和侵袭转移能力,且与其靶向调控PDCD4、PTEN、TPM1基因有关。
目的 研究血清总胆汁酸(tba)水平与慢性肝病患者肝组织炎症分级间的量化关系.方法 用循环酶法检测172例各类慢性肝病患者血清tba水平,并进行肝组织病理活检,以确定炎症分级.采用spss12.0软件包分析tba与肝组织炎症分级之间的量化对应关系.结果 血清tba水平与肝组织炎症分级呈正相关(r=0.275,p＜0.01)；当tba达到20 μmol/l时,肝组织炎症分级达到g2水平.结论 血清tba水平在评估慢性肝病患者肝组织炎症分级方面具有重要意义.
abstract：
objective to investigate the correlation of serum total bile acid (tba) levels with the inflammation grades of liver tissue in chronic liver diseases.methods cyclophorase assay was used to detect the serum tba levels in 172 patients with various chronic liver diseases,and the inflammation grades of liver tissue were determined by liver biopsy.the correlation between serum tba levels and the inflammation grades of liver tissue was evaluated using spss 12.0 software.results serum tba level was positively correlated with the inflammation grade of liver tissue ( r =0.275,p ＜ 0.01 ).the inflammation grade reached g2 when serum tba was 20 μmol/l.conclusion serum tba level may be useful for evaluating the inflammation grade of liver tissue in chronic liver diseases.
