【摘要】 目的探讨玉米须水提物对2型糖尿病大鼠胰高血糖素的影响。方法采用高脂高糖饲养加小剂量链脲佐菌素(STZ)诱导模拟2型糖尿病雄性SD大鼠模型,给药干预8周后,分别测定各组大鼠空腹血糖(FBG)和胰高血糖素(glucagon)的水平;免疫组化法分析胰岛中胰高血糖素的表达水平。结果与模型组比较,中、高剂量的玉米须水提物可呈剂量依赖型显著降低糖尿病大鼠FBG和glucagon的水平(P<0.05或P<0.01),明显降低胰岛细胞中胰高血糖素的表达(P<0.05或P<0.01),对胰岛细胞具有一定的保护作用。结论玉米须水提物可降低糖尿病大鼠空腹血糖和胰高血糖素,抑制胰高血糖素大量分泌,对2型糖尿病大鼠可产生一定的保护作用。更多还原

【Abstract】 Objective To study the effect of stigma maydis aqueous extract(SMAE) on glucagon in type 2 diabetic rats.Methods Type 2 diabetic male Sprague-Dawley rat mode was induced by high-fat and high-sugar dietary feeds and low dose streptozotocin(STZ). After 8 weeks of treatment,levels of fasting blood glucose(FBG) and glucagon(Glu) in serum were respectively assayed.Immunohistocmical study was adopted to analyze the expression of glucagon in islet cells.Results Compared with model control group,SMAE of middle and high dose remarkably reduced the level of FBG and Glu(P<0.05 or P<0.01),and significantly reduced the expression of Glu in islet cells (P<0.05 or P<0.01).It possessed certain function of protecting pancreatic cells. Conclusion SAME could dominantly decrease FBG and Glu inserum,inhibit excessive secretion of Glu.Thus, SMAE may protect against type 2 diabetic rats.更多还原