基于胃寒证模型的吴茱萸挥发油功效及伴随毒副作用研究

Study on efficacy and accompanying toxic and side effects of volatile oil of Evodia Fructus based on stomach cold syndrome model

目的:对吴茱萸挥发油在胃寒证小鼠模型上镇痛作用的药效剂量范围及机制进行初步研究,并探讨其伴随毒性与氧化损伤机制的相关性,为阐明其"功效-证候-毒性"相关性提供实验依据。方法:制备胃寒证小鼠模型,采用经典的小鼠热板法,灌胃不同剂量吴茱萸挥发油,观察其镇痛及伴随毒副作用,检测血清ALT,AST,PGE2,NO,NOS,MDA,SOD,GSH,GSH-Px,BUN,CR及肝脏ALT,AST;并通过相关的毒性反应积分表,记录小鼠的伴随毒性症状。结果:吴茱萸挥发油在给药后30 min有明显的镇痛作用,60 min达到峰效应,呈现一定的"量-效"和"时-效"关系,血中和肝内ALT和AST水平升高,血中PGE2,MDA,NO,NOS水平增高,SOD,GSH,GSH-Px水平下降,BUN,CR水平无明显变化,肝脏指数增加,肾脏比值无明显变化。结论:吴茱萸挥发油发挥镇痛效应的机制与抑制疼痛介质释放、过氧化损伤及NO损伤有关;在发挥镇痛效果的同时还会伴随着对肝脏产生一定的毒性,毒性机制主要为氧化损伤,呈现与肝毒性损伤相并行的"量-时-毒"关系。

Objective： To preliminarily study the effective dosage range and mechanism of the abirritation of volatile oil of Evodia Fructus on the stomach cold syndrome model in mice, and discuss the correlation between its accompanying toxicity and oxidative damage mechanism, in order to provide the experimental basis for explaining the efficacy-syndrome-toxicity correlation. Method： The stomac, h cold-syndrome model in mice was induced by the classic hot plate test by orally administrating with different doses of volatile oil of Evodia Fructus, in order to observe its abirritation and companying toxic and side effects and detect serum ALT, AST, PGE2 , NO, NOS, MDA, SOD, GSH, GSH-Px, BUN, CR and hepatic ALT, AST. The companying toxic symptoms in mice were recorded in toxic reaction integral table. Result： Volatile oil of Evodia Fructus had an obvious analgesic effect at 30 rain after the oral administration and reached the peak effect at 60 rain, with certain ＂dose-effect＂ and ＂time-effect＂ relations, rises in serum and hepatic ALT and AST levels, serum PGE2, MDA, NO and NOS and hepatic indexes, decreases in SOD, GSH and GSH-Px and no notable change in BUN, CR levels and kidney weight/body ratio. Conclusion ： The abirritation mechanism of volatile oil of Evodia Fructus was related to the inhibition of pain transmitter release, peroxidative damage and NO damage, which is accompanied by certain hepatotoxicity, mainly mainly oxidative damage, with a concurrent ＂dose-time-toxicity＂ relationship.