人工栽培肉苁蓉保肝和抗氧化活性研究

采用清除二苯代苦味酰基(DPPH)自由基、清除2,2′-连氨-(3-乙基苯并噻唑啉-6-磺酸)二氨盐](ABTS)自由基和铁离子还原/抗氧化能力(FRAP)测定法评价栽培肉苁蓉不同溶剂提取物体外抗氧化能力;腹腔注射四氯化碳复制小鼠急性肝损伤模型,测定血清谷丙转氨酶(ALT)、谷草转氨酶(AST)活性、肝脏指数和肝组织匀浆中丙二醛(MDA)含量及超氧化物歧化酶(SOD)活力值评价栽培肉苁蓉乙醇提取物的保肝作用。栽培肉苁蓉各提取物均显示较好的清除DPPH自由基、ABTS自由基及还原Fe3+-三吡啶三哑嗪(TPTZ)的能力,其中乙醇提取物具有最好的抗氧化活性(3种方法的RACT50值为3 534.32、2 726.39、2 621.68μmol/g),与阳性对照药丁基羟基茴香醚(BHA)相差不大(RACT50值为4 242.31、5 457.65、6 633.04μmol/g),大于丁基羟基甲苯(BHT)(RACT50值为724.59、1 322.27、1 581.68μmol/g);且肝损伤实验显示,乙醇提取物能显著降低小鼠血清中ALT、AST活性以及肝匀浆MDA含量,并能显著提高小鼠肝脏中的SOD值。结果表明,肉苁蓉对四氯化碳致小鼠急性肝损伤具有显著的保护作用,其机制可能与其抗氧化作用有关。

Hepatoprotective effect and antioxidant activity of Cultivate Cistanche deserticola Y. C. Ma

The antioxidant activity of the extracts of Cultivate Cistanche deserticola was assayed by the method of DPPH,ABTS and FRAP in vitro.The mouse model of acute hepatic injury was established by giving CCl4 abdominally.The activity of ALT and AST in serum and the levels of MDA and SOD in liver tissue were examined to evaluate the hepatoprotective and antioxidant activity of the ethanol extract of Cultivate C.deserticola.The ethanol extract has the highest antioxidant activity in four extracts in which the valu...