食品科学 ›› 2014, Vol. 35 ›› Issue (1): 209-213.doi: 10.7506/spkx1002-6630-201401041

• 营养卫生 • 上一篇    下一篇

百合多糖对Ⅰ型糖尿病大鼠的降血糖作用

肖 遐,吴 雄,何纯莲*   

  1. 湖南师范大学医学院,湖南 长沙 410006
  • 收稿日期:2013-01-19 修回日期:2013-12-27 出版日期:2014-01-15 发布日期:2014-01-22
  • 通讯作者: 何纯莲 E-mail:chunlianhe68@163.com
  • 基金资助:

    国家自然科学基金项目(21176063);湖南省长沙市科技局科技计划项目(K1303022-31);
    湖南省教育厅重点项目(12A085);湖南省科技厅科技计划项目(2013SK3134)

Hypoglycemic Effect of Lily Polysaccharides in Type Ⅰ Diabetic Rats

XIAO Xia, WU Xiong, HE Chun-lian*   

  1. Medical College, Hunan Normal University, Changsha 410006, China
  • Received:2013-01-19 Revised:2013-12-27 Online:2014-01-15 Published:2014-01-22
  • Contact: HE Chun-Lian E-mail:chunlianhe68@163.com

摘要:

目的:探讨百合多糖对I 型糖尿病大鼠的降血糖作用。方法:从新鲜百合中提取出百合多糖,采用离子交换层析和凝胶层析纯化得到3种多糖;优选碱洗百合多糖、以链脲佐菌素诱导建立I型糖尿病大鼠模型,通过百合多糖治疗,比较治疗前后大鼠体质量及空腹血糖的变化、测定治疗后胰岛素水平以及己糖激酶、琥珀酸脱氢酶、总超氧化物歧化酶的活性和丙二醛的含量,研究百合多糖对I型糖尿病大鼠的降血糖作用。结果:百合多糖可减缓糖尿病大鼠体质量的负增长;降低空腹血糖(P<0.01)和丙二醛含量(P<0.05);升高胰岛素、己糖激酶、琥珀酸脱氢酶和总超氧化物歧化酶活性(P<0.01)。结论:百合多糖一方面通过提高糖代谢酶的活性,促进葡萄糖的摄取和利用;另一方面通过提高机体抗氧化功能,抑制氧自由基对胰岛β细胞的损伤,增加胰岛素分泌,调节I型糖尿病大鼠的血糖。

关键词: 百合多糖, I 型糖尿病, 胰岛素, 超氧化物歧化酶

Abstract:

Objective: To explore the hypoglycemic effect of lily polysaccharides in type Ⅰ diabetic rats. Methods: Lily
polysaccharide was extracted from fresh lily bulbs and purified through ion-exchange chromatography on a DEAE52
cellulose column. An alkaline-soluble fraction was obtained from the eluates from the DEAE52 cellulose column and proved
to be a single component by gel filtration chromatography. The purified polysaccharide was used to treat rat models of type
Ⅰ diabetes induced by streptozotocin. The changes in body weight, fasting blood glucose (FBG), insulin (INS), hexokinase
(HK), succinic dehydrogenase (SDH), total superoxide dismutase (T-SOD) and malondialdehyde (MDA) were determined
in diabetic rats before and after the treatment. Results: The lily polysaccharide could significantly slow down the negative
growth of body weights in diabetic rats, reduce the contents of FBG (P < 0.01) and MDA (P < 0.05), and significantly
increase INS, HK, SDH and T-SOD (P < 0.01). Conclusion: Lily polysaccharide exerts hypoglycemic effect in type Ⅰ
diabetic rats through enhancing the activities of antioxidant enzymes, improving antioxidant function, inhibiting oxygen free
radical damage to pancreatic β cells and increasing insulin secretion.

Key words: lily polysaccharide, type I diabetic rats, insulin (INS), superoxide dismutase (SOD)

中图分类号: