自然科学版
陕西师范大学学报(自然科学版)
生命科学
SMND309的抗氧化活性研究
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王芳1,杨建雄1 * ,贾贵东1,张艳1,马蕊1,赵涛2
(1 陕西师范大学 生命科学学院;2 陕西师范大学 体育学院,陕西 西安710062)
王芳,女,硕士,研究方向为天然产物的分离鉴定和功能评价.
摘要:
为评价SMND309的抗氧化活性,测定了SMND309的总还原力及其对于1 ,1二苯基2苦苯肼自由基(DPPH·)、羟自由基(·OH)的清除能力,运用 Fe2+抗坏血酸(Vc)体系诱导大鼠肝线粒体氧化损伤,测定了SMND309对于线粒体肿胀度、蛋白质羰基含量以及ATP酶活性的影响.结果显示,SMND309具有较强的总还原力,能够很好地清除DPPH·和·OH;对线粒体的肿胀、蛋白羰基含量的增加以及ATP酶活性的降低均有一定的抑制作用.表明SMND309是一种有效的抗氧化剂.
关键词:
SMND309; 抗氧化; 自由基; 线粒体; 氧化损伤
收稿日期:
2010-09-11
中图分类号:
R284.2
文献标识码:
A
文章编号:
16724291(2011)05006704
基金项目:
国家自然科学基金资助项目(30670360).
Doi:
Study on antioxidant activities of SMND309
WANG Fang1, YANG Jianxiong1 *, JIA Guidong1, ZHANG Yan1, MA Rui1, ZHAO Tao2
(1 College of Life Science, Shaanxi Normal University;2 College of Physical Education, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The antioxidant activities of SMND309 were investigated using different analysises including 1, 1diphenyl2picrylhydrazyl (DPPH·) and hydroxyl (·OH) radical scavenging and reducing power, as well as Fe2+ascorbic acid (Vc) system used to cause oxidative damage of the rat liver mitochondria. The effects of SMND309 on mitochondria permeability transition, protein carbonyl group levels and the activity of ATPase were detected.The results demonstrated that SMND309 has a significant reduction capability and a remarkable potency to scavenge DPPH· and hydroxyl (·OH) radical. Furthermore, SMND309 can play a significant role in inhibiting mitochondria permeability transition, the increase of protein carbonyl levels and the decrease of the activity of ATPase. Based on these resules, SMND309 can be used as an effective antioxidant.
KeyWords:
SMND309; antioxidant; free radical; mitochondria; oxidative damage