乙酰半胱氨酸纳米活性炭缓释微囊对大鼠非酒精性脂肪性肝炎抗氧化作用的影响

摘要

Objective To explore the effect of N-acetylcysteine nano-carbon (ACNAC) on antioxidative capacity in non-alcoholic steatohepatitis rats.Methods Rats non-alcoholic steatohepatitis model was established by means of high-fat diet in 12 weeks.Then the rats were treated with different doses of ACNAC (800 mg/kg,400 mg/kg and 200 mg/kg) and YISHANFU at the dose of 0.692 mg/kg,NAC at the dose of 400 mg/kg in astrolavaging perday.After 8 weeks,serological levels and liver tissue of SOD,MDA,GSH,GSH-PX in all groups were measured.Pathological changes of liver tissues under light microscope were observed.Results Compared with the high-fat group rats,the groups of medium dose and low dose of ACNAC in the serological levels of ALT,AST were decreased significantly,even lower than the group of YISHANFU.TCHOL,TG,LDL-C and CR were no statistical significance but decresed in date, and also lower than the groups of YISHANFU and NAC.The level of liver tissue in SOD,GSH,GSH-PX,the group of ACNAC were higher than the high-fat group's,and the level of MDA was lower than that.Conclusion Dose-related N-acetylcysteine Nano-carbon could enhance antioxidant capacity of NASH rats.%目的 探讨乙酰半胱氨酸纳米活性碳缓释微囊(ACNAC)对非酒精性脂肪性肝炎(NASH)大鼠肝脏抗氧化能力的影响.方法 通过高脂饮食12周诱导建立NASH大鼠动物模型,分别给予ACNAC高、中、低每日不同剂量(800 mg/kg、400 mg/kg和200 mg/kg)与易善复(0.692 mg/kg)、乙酰半胱氨酸(400 mg/kg)连续灌胃8周后,检测血清生化指标、肝匀浆丙二醛(MDA)含量、总超氧化物歧化酶(SOD)活性、还原型谷胱甘肽(GSH)、谷胱甘肽过氧化物酶(GSH-Px)活性及肝脏病理指标.结果 ACNAC中剂量组与高脂组相比,血清ALT、AST明显下降(P＜0.01 、P ＜0.05),且优于易善复组(P＜0.05).血清TCHOL 、TG、LDL-C和CR检测结果差异虽无统计学意义,但其数值上ACNAC明显低于高脂组,且优于易善复组和NAC组.ACNAC高、中、低三组与高脂组相比,SOD活力明显升高(P ＜0.01) 、GSH含量明显升高(P＜0.01),ACNAC中剂量组与高脂组比较GSH-PX活性明显升高(P＜0.05)但略低于易善复组(P＜0.01)).结论 相关剂量的乙酰半胱氨酸纳米活性炭缓释微囊可增强非酒精性脂肪性肝炎大鼠的抗氧化能力.