摘要
[目的]探讨脑醒喷鼻剂(主要由川芎、石菖蒲等中药组成)对缺血性脑细胞损伤的保护机制。[方法]将Wistar大鼠70只随机分为脑醒喷鼻剂高、中、低剂量组,尼莫通注射液组,溶媒喷鼻组,模型组和假手术组。采用左大脑中动脉(LMCA)线栓法复制脑缺血-再灌注大鼠模型,检测血清中肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)水平,脑匀浆中丙二醛(MDA)的含量及超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、一氧化氮合成酶(NOS)的活性。[结果]脑醒喷鼻剂能降低MDA、TNF-α、IL-1β含量,增强SOD、GSH-Px、NOS的活性(P<0.05或P<0.01)。[结论]脑醒喷鼻剂通过促进自由基清除、抑制炎性介质释放、增加保护性一氧化氮(NO)合成,从而减轻自由基损伤、抑制局部炎症反应、改善脑血流灌注,对缺血性脑细胞损伤具有保护作用。
[Objective] To explore the protective mechanism of Naoxing Nasal Spray (NNS) on ischemic cerebral injury. [Methods] Seventy Wistar rats were randomized into 7 groups: high-dose NNS group (group A), moderate-dose NNS group (group B), low-dose NNS group (group C), nimodipine group (group D), model group (group E), solvent control group (group F) and pseudo-operation group (group G). Rat models of ischemia/reperfusion were established by blocking left middle cerebral artery. Plasma levels of tumor necrosis factor a (TNF-α) and interleukin 1β (IL-1β), malondialdehyde (MDA) content, activities of superoxide dismustase (SOD), glutathione peroxidase (GSH-Px) and nitric oxide synthase (NOS) in brain homogenate were detected. [Results] NNS decreased the contents of MDA, TNF-α and IL-1β, and increased the activities of SOD, GSH-Px and NOS. [Conclusion] NNS has protective effect on ischemic cerebral injury by promoting the clearance of free radicals, inhibiting the release of inflammatory mediator and increasing the synthesis of NO and thus to reduce injury of free radicals, inhibit the local inflammatory reaction and improve cerebral blood perfusion.
出处
《广州中医药大学学报》
CAS
2005年第1期39-41,共3页
Journal of Guangzhou University of Traditional Chinese Medicine
基金
广东省中医药管理局资助项目(编号:98342)
