天冰调督胶囊对癫痫大鼠学习记忆及海马脑源性神经营养因子表达的影响

目的:观察天冰调督胶囊(全蝎,人工牛黄、冰片等)对印防己毒(PTX)诱导癫痫大鼠学习记忆、神经元损伤以及脑源性神经营养因子(BDNF)表达的影响。方法:用印防己毒建立癫痫大鼠模型,观察天冰调督胶囊的疗效,并以丙戊酸钠、脑复康悬浊液作为对照观察。用旷场行为观察箱观察大鼠行为学改变及拒俘反应性。Morris水迷宫测试观察大鼠寻找平台所需时间和通过原平台次数。脑组织切片HE染色、尼氏染色、BDNF免疫组织化学染色并进行免疫阳性细胞记数。结果:天冰调督胶囊可改善大鼠行为学异常及拒俘反应性,寻找平台所需时间明显缩短,通过原平台的次数明显增加。减轻癫痫大鼠脑组织皮层和海马区细胞变性和坏死状况,改善神经元内尼氏体脱失现象,经免疫组化染色BDNF阳性细胞数增多。结论:天冰调督胶囊可提高PTX化学点燃癫痫大鼠学习记忆能力,可能通过增加BDNF的表达;保护尼氏小体,促进神经元蛋白质合成;维护神经元正常功能,提高癫痫大鼠学习记忆能力。

Effect of Tianbing Tiaodu Capsule on learning and memory, and expression of BDNF in hippocampus of epilepsy rats

AIM:To observe the effect of Tianbing Tiaodu Capsule on learning and memory,and expression of BDNF in brains of picrotoxin-kindled epilepsy rats. METHODS: The epilepsy rat model was established by picrotoxin in jection.The effects of Tianbing Tiaodu Capsule were observed on the model groups and compared with sodium valproate group and piracetam group.The behavior and emotion of epilepsy rats were observed by Action Observing Box.Its reactions were assessed by snatching rats with the gloves.The learning and memory abilities were tested after Morris water maze training.The brains were made into paraffin sections,processed for HE staining and Nissl staining.The expression levels of BDNF were measured by immunohistochemical S-P techniques. RESULTS: Taking Tianbing Tiaodu Capsule,the behavior and emotion of epilepsy rats were markedly improved.The escape latency of searching the platform were shortened and times of rats acrossing the original platform were increased.Tianbing Tiaodu Capsule could reduce neuron impairment and necrosis on the cordex and Hippocampus of epilepsy rats,improve the loss of Nissl bodies,increase BDNF positive remarks. CONCLUSION: Tianbing Tiaodu Capsule can markedly improve impairment of learning and memory in picrotoxin-kindle epilepsy rats,which might be the result of increaseing BDNF expression,the protection of Nissl bodies,making protein synthesize,improving neuron function.