人参皂苷Rg1对脑挫伤后大鼠脑内胰岛素样生长因子1表达的影响

目的：探讨人参皂苷Rg1对脑组织挫伤后大鼠脑中胰岛素样生长因子1（insulin—like growth factor-1，IGF-1）表达的影响。方法：Wistar大鼠26只，分为正常对照组（2只），脑挫伤模型组（8只）及人参皂苷Rg1治疗组（16只），在损伤后不同时间点（损伤后6h、12h、2d及6d）分别处死大鼠，使用免疫组化方法观察并检测脑中IGF-1的表达。结果：与对照组相比，脑挫伤模型组损伤后各时间点脑组织中IGF-1的表达有所升高（P〈0．05）；与模型组比较，人参皂苷Rg1治疗组IGF-1的表达明显升高（P％0．05）。结论：人参皂苷Rg1可能通过促进脑挫伤后脑组织IGF-1的表达，促进脑组织的功能恢复。

Effects of ginsenoside Rg1 on expression of insulin-like growth factor-1 in brain of rats with brain contusion

Objective: To study the effects of ginsenoside Rg1 on the expression of insulin-like growth factor-1 (IGF-1) in the brain of rats after the experimental brain contusion.dz Methods: A total of twenty-six Wistar rats were randomly divided into normal control group (n=2), untreated group (n=8) and ginsenoside Rg1 group (n=16). Brain injuries were induced in rats by a mechanical striking device. The brain tissues were extracted at different times after brain injury (6th hour, 12th hour, 2nd day, 6th day), then the expression of IGF-1 in brain tissue was examined by immunohistochemical method.dz Results: In comparison with the normal control group, the expression of IGF-1 in the brain tissues was increased in the untreated group after the brain contusion (P<0.05). The expression of IGF-1 in brain tissues in ginsenoside Rg1 group was significantly increased as compared with the untreated group (P<0.05).dz Conclusion: Ginsenoside Rg1 enhances the recovery of the contused brain through increasing the expression of IGF-1.