Abstract: Objective To investigate the effect of hydromorphine on ERK1 / 2 signal pathway in spinal cord of rats with inflammatory pain. Method Thirty SPF male rats were randomly divided into three groups: the normal group, the model group and the hydromorphine group. Detection of thermal pain threshold and mechanical pain threshold were detected in rats of each group. TNF-α, IL-6 and IL-10 in serum were tested by ELISA. Western blot detected the ERK1 / 2 and p-ERK1 / 2 protein expression in spinal cord of rats in each group. The expression of ERK1 / 2 mRNA in spinal cord of rats in each group was detected by qRT-PCR method . Result Compared with the normal group, the content of serum inflammatory cytokines TNF-α and IL-6 in the model group was significantly higher than that in the normal group, while the content of IL-10 in the model group was significantly lower than that

摘要:目的 探讨氢吗啡酮对炎性痛大鼠脊髓 ERK1 / 2 信号通路的影响。 方法 选择 SPF 级雄性大鼠 30 只,随机分为 3 组,正常组、模型组和氢吗啡酮组;检测各组大鼠热痛阈和机械痛阈;ELISA 检测血清中 TNF-α、IL-6 和 IL-10的含量;Western blot 检测各组大鼠脊髓中 ERK1 / 2 和 p-ERK1 / 2 蛋白表达水平;qRT-PCR 法检测各组大鼠脊髓中ERK1 / 2 mRNA 表达水平。 结果 与正常组相比,模型组大鼠血清炎症细胞因子 TNF-α 和 IL-6 含量明显增高,IL-10 含量明显降低,且术侧后肢热痛 阈 显 著 缩 短 及 机 械 痛 域 明 显 降 低,差 异 均 有 统 计 学 意 义 ( P < 0. 05) ;脊 髓 中ERK1 / 2 mRNA 表达水平、ERK1 / 2 及 p-ERK1 / 2 蛋白表达水平均显著升高,差异有统计学意义( P< 0. 05) 。 注射氢吗啡酮后,与模型组相比,大鼠血清 TNF-α 和 IL-6 含量显著降低而 IL-10 含量显著升高,热痛阈显著延长及机械痛域明显升高,差异均具有统计学意义( P<0. 05) ;氢吗啡酮组 ERK1 / 2 mRNA 表达水平、ERK1 / 2 和 p-ERK1 / 2 蛋白表达水平均明显降低( P<0. 05) 。 结论 氢吗啡酮可有效改善弗氏完全佐剂诱导的大鼠炎性疼痛,其抗炎镇痛机制与降低大鼠机体炎性因子的产生,并抑制 ERK1 / 2 信号通路的活化有关。