环氧化酶-2选择性抑制剂塞来昔布对癫癎持续状态大鼠脑内主穹隆蛋白表达的影响

Effects of cyclooxygenase-2 selective inhibitor celecoxib on the expression of major vault protein in rats with status epilepticus

摘要:

目的 观察环氧化酶-2选择性抑制剂塞来昔布对癫癎持续状态大鼠脑内主穹隆蛋白(MVP)表达的影响,探讨其在治疗难治性癫癎中的作用及可能机制,为难治性癫癎的新药治疗提供理论依据。方法 健康成年雄性Sprague-Dawley大鼠60只,随机分为空白对照组(n=16)、癫癎模型组(n=22)和塞来昔布干预组(n=22),氯化锂-匹鲁卡品诱发大鼠癫癎持续状态模型成功后,各组均有16只大鼠纳入实验。采用免疫组化法和Westernblot法检测各组大鼠额叶皮质区及海马区MVP的表达情况。结果 癫癎模型组大鼠脑内MVP的表达水平较空白对照组显著增高(P<0.01);塞来昔布干预后的大鼠脑组织中MVP表达水平较癫癎模型组显著下降,但仍高于空白对照组(P<0.01)。结论 塞来昔布可降低MVP在癫癎持续状态大鼠脑组织中的高表达,有望为治疗难治性癫癎提供新方法 。

Abstract:

Objective To study the effect of cyclooxygenase -2 selective inhibitor celecoxib on the expression of major vault protein ( MVP) in the brain of rats with status epilepticus and its possible roles in the treatment of refractory epilepsy. Methods Sixty adult male Sprague-Dawley rats were randomly assigned to blank control (n=16), epilepsy model (n=22) and celecoxib treatment groups (n=22). After the status epilepticus was induced in rats by injecting lithium and pilocarpine, each group had 16 rats enrolled as subjects. Immunohistochemical method and Western blot method were used to detect the expression of MVP in the frontal cortex and hippocampus. Results The expression of MVP was significantly higher in the epilepsy model group than in the control group (P<0.01). The expression of MVP in the celecoxib treatment group was significantly decreased compared with the epilepsy model group, but it was still higher than in the control group (P<0.01). Conclusions Celecoxib could decrease the expression of MVP in brain tissue of rats with status epilepticus, suggesting that it is promising for the treatment of intractable epilepsy.