苦瓜多糖降血糖活性成分的研究

目的研究苦瓜多糖最佳降糖活性成分的降血糖功能及其机制。方法比较苦瓜水提多糖和苦瓜碱提多糖对链脲霉素(STZ)诱导的糖尿病小鼠的降糖效果,初步分析其降糖机制。结果苦瓜碱提多糖200和400mg/kgbw都可显著降低STZ糖尿病小鼠的血糖葡萄糖耐量及肝糖原的含量,果糖胺的含量同样也有所降低。分子量最大的苦瓜碱提多糖降糖活性最好。结论大分子量苦瓜多糖的降糖效果较好,其机制可能是通过减弱STZ对胰岛β细胞的损伤或改善受损β细胞的功能,从而起到调节血糖的作用。

STUDIES ON COMPONENTS WITH ANTIHYPERGLYCEMIC EFFECT OF MOMORDICA CHARANTIA L. POLYSACCHARIDES

Objective To investigate the antihyperglycemic effect and the most effective com-ponent of Momordica charantia L. and its mechanism. Method Water-extracted and alkali-extracted Momordica charantia L. polysaccharides with different molecular weight on streptozotocin induced diabetes mellitus mice were carried out. The antihyperglycemic mechanism was preliminarily analyzed. Results Alkali-extracted Momordica charantia L. polysaccharides could lower blood sugar,improve glucose tolerance and increase the content of hepatic glycogen significantly at the dose of both 200 and 400mg/kg bw. The content of fructosamine was also lowered. Conclusion The component of alkali extracted Momordica charantia L polysacchaides with maximal molecular weight possessed the best antihyperglycemic effect.