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霍山石斛水溶性多糖抗亚急性酒精性肝损伤研究

2017-08-13聂春艳汪鹤潘利华查学强罗建平

安徽农业科学 2017年17期

聂春艳 汪鹤 潘利华 查学强 罗建平

摘要[目的]研究霍山石斛水溶性多糖抗小鼠亚急性酒精性肝损伤的作用。 [方法]制备霍山石斛水溶性多糖;以连续灌胃30%乙醇(V/V,10 mL/kg)15 d的小鼠为亚急性酒精性肝损伤模型,水溶性多糖连续灌胃30 d后,称量小鼠体重和肝脏重量,观察肝组织损伤病理变化,并检测血清中谷丙转氨酶(ALT)、谷草转氨酶(AST)、碱性磷酸酶(ALP)活性以及高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、总胆固醇(TC)、甘油三酯(TG)的含量,同时测定肝脏中乙醇脱氢酶(ADH)、乙醛脱氢酶(ALDH)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-PX)的活性以及还原性谷胱甘肽(GSH)和丙二醛(MDA)的含量。 [结果]霍山石斛水溶性多糖各剂量可有效抑制酒精引起的小鼠血清中ALT、AST、ALP、HDL-C、LDL-C、TC、TG水平的变化,增强肝组织中ADH、ALDH、SOD、GSH-PX的活性,抑制肝组织中GSH含量的降低和MDA含量的升高,减轻酒精对肝脏的病理损伤。 [结论]霍山石斛水溶性多糖对亚急性酒精性肝损伤具有显著的保护作用。

关键词霍山石斛;水溶性多糖;亚急性酒精性肝损伤

中图分类号Q946.3文献标识码A文章编号0517-6611(2017)17-0100-06

Abstract[Objective] The research aimed to investigate the effects of watersoluble polysaccharide from D. huoshanense against alcoholinduced subacute liver injury in mice. [Method]Watersoluble polysaccharide from D. huoshanense was prepared.The mouse liver injury was induced by oral administration of 30% alcohol for 15 days and watersoluble polysaccharide was employed to intervene this injury for 30 days. Liver injury was evaluated by mouse body weight, liver weight, liver pathological changes, serum biochemical indexes including alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), high density lipoprotein cholesterol (HDLC), low density lipoprotein cholesterol (LDLC), total cholesterol (TC)and triglyceride (TG), and liver biochemical indexes including alcohol dehydrogenase (ADH), acetaldehyde dehydrogenase (ALDH), superoxide dismutase (SOD), glutathione peroxidase (GSHPX), glutathione (GSH) and malonaldehyde (MDA).[Result]Watersoluble polysaccharide from D. huoshanense effectively suppressed the change of ALT, AST, ALP, HDLC, LDLC, TC and TG levels in serum, enhanced the activities of ADH, ALDH,SOD and GSHPX in liver, inhibited the decrease in GSH level and the increase in MDA level in liver,and reduced the pathological damage of alcohol to the liver.[Conclusion]Watersoluble polysaccharide from D. huoshanense showed significant hepatoprotective effects against alcoholinduced subacute liver injury.

Key wordsDendrobium huoshanense;Watersoluble polysaccharide;Subacute alcoholic liver injury

基金項目安徽省科技攻關计划项目(12010402088)。

作者简介聂春艳(1992—),女,湖南常德人,硕士研究生,研究方向:中草药与功能食品。

收稿日期2017-04-06

长期过度饮酒容易导致酒精性肝损伤已成为国内外共识[1-2]。大量的试验研究表明,许多中草药具有改善酒精性肝损伤的功效[3]。霍山石斛(Dendrobium huoshanense)作为传统的药食兼用植物[4],具有益胃生津、滋阴清热、保肝明目等功效[5]。有研究显示,多糖作为石斛的主要活性成分之一,具有一定的酒精性肝损伤保护作用[6]。……

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