食品科学 ›› 2011, Vol. 32 ›› Issue (13): 321-324.doi: 10.7506/spkx1002-6630-201113070

• 营养卫生 • 上一篇    下一篇

低聚乳果糖对结肠炎大鼠血浆抗氧化系统的影响

李玲1,2,印遇龙1,2,3,阮征1,2,*,周笑犁1,2,周艳1,2,张翠1,2,黄小流1,2   

  1. 1. 南昌大学 食品科学与技术国家重点实验室
    2.南昌大学生命科学与食品工程学院 3.中国科学院亚热带农业生态研究所
  • 出版日期:2011-07-15 发布日期:2011-07-02
  • 基金资助:
    国家自然科学基金项目(31001014);黎介寿院士肠道屏障研究专项基金项目(LJS_201006); 中国博士后科学基金项目(20080440166)

Effect of Lactosucrose on Plasma Antioxidant System in Colitis Rats

LI Ling1,2,YIN Yu-long1,2,3,RUAN Zheng1,2,*,ZHOU Xiao-li1,2,ZHOU Yan1,2,ZHANG Cui1,2,HUANG Xiao-liu1,2   

  1. (1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; 2. College of Life Science and Food Engineering, Nanchang University, Nanchang 330031, China; 3. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China)
  • Online:2011-07-15 Published:2011-07-02

摘要: 目的:研究低聚乳果糖对溃疡性结肠炎大鼠血浆中的抗氧化系统的影响。方法:将SD大鼠随机分为4组:正常组、模型组、低聚乳果糖(LS)组、柳氮磺胺吡啶(SASP)药物组,研究低聚乳果糖对结肠炎大鼠的结肠黏膜损伤指数(CMDI),大鼠血浆中过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽-过氧化物酶(GSH-Px)、诱导型一氧化氮合酶(iNOS)、髓过氧化物酶(MPO)活性和丙二醛(MAD)含量的影响。结果:LS组大鼠与模型组相比,SOD和GSH-Px活性显著提高,并可恢复至正常水平,GSH-Px活性显著高于SASP组;LS组大鼠与模型组相比CMDI、MPO和iNOS活性显著降低,其中MPO活性恢复至正常水平。结论:低聚乳果糖可提高结肠炎大鼠血浆的抗氧化能力,并同时降低炎性细胞浸润和iNOS的酶活。

关键词: 低聚乳果糖, 溃疡性结肠炎, 自由基, 抗氧化

Abstract: Aim: To investigate the protective effect of lactosucrose (LS) on the plasma antioxidant system in TNBS-induced colitis rats. Methods: A total of 32 female SD rats were randomly divided into 4 groups: normal control group, model group, LS group and SASP (sulfasalazine) group. The other 3 groups received TNBS induction except the normal control group and were orally administrated with normal saline (10 mL/(kg ·d)), LS (250 mg/(kg ·d)) or SASP (250 mg/(kg ·d)) once daily for 3 successive weeks. At the end of the administration period, all rats were scarified for determination of colon mucosadamage index (CMDI), the activities of catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), inducible nitric oxide synthase (iNOS) and myeloperoxidase (MPO) and malondialdehyde (MDA) level. Results: Compared with the model group, the activities of SOD and GSH-Px in the LS group were increased significantly and could resume their normal levels. The LS group exhibited significantly higher GSH-Px activity when compared with the SASP group and significantly lower CMDI and MPO and iNOS activities when compared with the model group, especially that MPO could be restored to its normal level. Conclusion: LS is capable of improving antioxidant function in the plasma of colitis rats and decreasing the activity of iNOS and inflammatory cell immersion.

Key words: lactosucrose, ulcerative colitis, free radical, antioxidation

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