益气增敏方对2型糖尿病大鼠骨骼肌组织葡萄糖转运蛋白4表达的影响

目的：研究益气增敏方对高脂饮食联合链脲佐菌素（streptozotocin,STZ）诱导的2型糖尿病（type2diabetes mellitus,T2DM）大鼠骨骼肌细胞葡萄糖转运蛋白4（glucose transporter4,GLUT4）表达的影响。方法：采用高脂饮食联合STZ诱导T2DM建立大鼠模型。健康雄性SD大鼠55只,随机分为对照组（10只）和高脂饲料组（45只）,4周后高脂饲料组大鼠腹腔注射STZ（35mg/kg体质量）,血糖≥16.67mmol/L者造模成功。将造模成功大鼠随机分为模型组、益气增敏方治疗组、罗格列酮治疗组和氯沙坦治疗组,每组10只。连续灌胃给药8周后,应用蛋白质印迹法检测骨骼肌组织胞浆及胞膜GLUT4蛋白的表达。结果：治疗8周后,与模型组相比,益气增敏方组大鼠GLUT4在胞膜的表达明显增多,在胞浆的表达明显减少（P〈0.05）;罗格列酮组大鼠GLUT4在胞膜的表达明显增多,在胞浆的表达明显减少（P〈0.01）;氯沙坦组大鼠GLUT4在胞膜和胞浆的表达无明显变化（P〉0.05）。结论：益气增敏方可促进骨骼肌组织GLUT4由胞浆转位至胞膜,有效改善T2DM大鼠的胰岛素抵抗,这一作用与罗格列酮相似。

Effects of Chinese herbal medicine Yiqi Zengmin formula on expression of glucose transporter 4 in skeletal muscle in type 2 diabetic rats

Objective:To investigate the effects of traditional Chinese compound recipe Yiqi Zengmin(YQZM)formula on expression of glucose transporter 4(GLUT4)in skeletal muscle of rats with type 2 diabetes induced by high-fat diet combined with low-dose-streptozotocin injection.Methods:Fifty male rats were randomly divided into two groups:model group fed with high-fat diet(n=40)and control group(n=10).After 4-week feed of high-fat diet,the rats of the model group were injected with streptozotocin at a dose of 35 mg/kg...