冬连胶囊对实验性糖尿病大鼠早期胰岛素抵抗的影响

目的 观察冬连胶囊对实验性糖尿病模型大鼠早期胰岛素抵抗和胰岛功能的影响.方法 给60只SD大鼠腹腔注射小剂量链尿佐菌素(STZ),配合给予高脂高糖饮食,建立2犁糖尿病胰岛素抵抗模型,1周后,用数字随机表法分为模型组、冬连胶囊大剂量组、小剂量组和阳性对照(二甲双胍)组、空白组.4周后,观察药物对空腹血糖、血脂、胰高血糖素、胰岛素和C肽的影响.结果 较模型组,冬连胶囊组可显著降低总胆固醇水平、血糖水平、胰岛素抵抗水平,提高血清C肽水平(P<0.01).结论 冬连胶囊通过降低血脂和血糖水平,减轻机体胰岛素抵抗,保护胰岛细胞,从而改善大鼠胰岛β分泌功能.

Effect of the Donglian Capsule on Early Insulin Resistance in Experimental Diabetic Rats

Objective To investigate the effects of Donglian Capsule(the combination of Ophiopogonis Tuber Polysaccharide with Rhizoma Coptidis Alkaloids, OPRA for short, Component of Chinese medicine)on early insulin resistance in experimental diabetic rats. Methods The animal model of insulin resistance in 2 type diabetic was established by injecting low dose of STZ in 60 high fat-fed SD rats. After one week, the successful models were randomly divided into 4 groups: untreated, high and low OPRA-treated, mefformin-treated group, Meanwhile, a normal control group was designed. After four weeks, the differences of FBG, PG, INS and C-P were compared among the groups. Results The OPRA can significantly reduced the level of serum TC and FBG, increased the C-E ]Lightened the IRI(P<0.01). Conclusion The OPRA can reduce the level of serum TG and FBG, and decrease insulin resistance to protect the β-cell function.