畜牧兽医学报 ›› 2013, Vol. 44 ›› Issue (9): 1425-1431.doi: 10.11843/j.issn.0366-6964.2013.09.013

• 动物营养 • 上一篇    下一篇

大豆胰蛋白酶抑制因子对不同生长阶段小鼠体内自由基生成的影响

谷春梅1,韩玲玲1,赵琳琳1,曲洪生1,宋鑫秀1,潘姝1,秦贵信2*   

  1. (1.吉林农业大学食品科学与工程学院,长春 130118; 2.吉林农业大学动物科技学院,长春 130118)
  • 收稿日期:2012-12-24 出版日期:2013-09-23 发布日期:2013-09-23
  • 通讯作者: 秦贵信,E-mail: qgx@jlau.edu.cn
  • 作者简介:谷春梅(1976-),女,吉林四平人,博士,硕士生导师,主要从事营养代谢与调控的研究,E-mail:jjnong2008@126.com
  • 基金资助:

    国家自然科学基金项目(31000769)

The Effect of Soybean Trypsin Inhibitor on Generation of Oxygen Free Radical in vivo at Different Growth Stages of Mice

GU Chun-mei1, HAN Ling-ling1, ZHAO Lin-lin1, QU Hong-sheng1,SONG Xin-xiu1, PAN Shu1, QIN Gui-xin2*   

  1. (1. College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118China; 2. College of Animal Science and Technology, Jilin Agricultural University, Changchun130118, China)
  • Received:2012-12-24 Online:2013-09-23 Published:2013-09-23

摘要:

试验旨在研究胰蛋白酶抑制因子(STI)对不同生长阶段小鼠体内自由基生成的影响。选用180只清洁级昆明种雄性小鼠,按体重随机分为3组,第1组为对照组,饲喂基础日粮;第2组为STI组,饲喂含有STI的基础日粮;第3组为VC组,饲喂含STI+VC的日粮。饲养试验分别进行1 2 3 4 5周。试验期末,眼球采血制备血清,并且迅速取出胰腺进行氧化和抗氧化指标检测。结果表明:与对照组相比,STI组氧化指标水平显著增加,而抗氧化指标水平显著下降。随着STI饲喂时间的增加,STI组血清和胰腺中丙二醛(MDA)含量呈现先增加后下降趋势,且在第3周时升到最大值;抗超氧阴离子能力呈现先增加后下降,再增加又下降趋势;抑制羟自由基能力在整个生长周期内则呈现缓慢上升趋势。添加抗氧化剂后,氧化水平下降,但其值仍显著高于对照组(P<0.05)。随着饲养期的延长,血清和胰腺总超氧化物歧化酶(T-SOD)以及血清过氧化氢酶(CAT)活性呈现先降低后增加趋势,且最低点在第3周; 胰腺CAT活性则呈现缓慢上升趋势。添加抗氧化剂后,抗氧化防御能力均增强,但仍低于对照组(P<0.05)。上述结果表明,STI对小鼠体内自由基水平的影响与生长周期有关,且在第3周时影响最为显著。此外,抗氧化剂维生素C的加入能够干预STI对机体的作用,有效改善氧化应激状态。

Abstract:

 To study the effect of STI on the generation of oxygen free radical in vivo at different growth stages of mice, 180 clean and male KM mice were selected and randomly divided into three groups. The first group as a control group was fed control diet, the second group(STI group) was fed control diet containing STIthe third group(VC group) was fed STI diet supplemented with vitamin C. After mice being fed 1, 2, 3, 4 and 5 week, serum and pancreas samples were collected to measure oxidative and antioxidative parameters. The results showed that, compared with the control group, the oxidant parameters significantly increased and the antioxidant parameters significantly decreased in serum and pancreas of STI group (P<0.05). In the whole growth periods, MDA content increased in the first two weeks, and achieved the maximum in the third week, then dropped. The ability of anti-superoxide anion firstly increased, then dropped, again increased and decreased. The ability of inhibiting hydroxy radical slowly increased. After VC being supplemented, the level of oxidation decreased, but its value was still significantly higher than that of control group (P<0.05). The activities of T-SOD in serum and pancreas dropped in the first two weeks, achieved the minimum in the third week, then increased. The activities of CAT in pancreas slowly increased . After VC being supplemented, the ability of antioxidant defenses in serum and pancreas were enhanced, but still lower than that of control group (P<0.05). The present study indicates that the effect of STI on free radical level in vivo of mice is related to growth periods, and this effect is the most significant in the third week. In addition, VC can interfere with the role of STI on the organism and effectively improve the status of oxidative stress.

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