天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (3): 419-422.

所属专题: No.3

• 开发研究 • 上一篇    下一篇

甘草黄酮对2型糖尿病大鼠肝脏中GSK-3β蛋白表达的影响

金鑫,赵海燕*,马永平   

  1. 北方民族大学生物科学与工程学院,银川 750021
  • 出版日期:2014-03-29 发布日期:2014-12-08

Effect of Licorice Flavonoids on GSK-3β Protein Expression in Liver of Type 2 Diabetic Rats

JIN Xin,ZHAO Hai-yan*,MA Yong-ping   

  1. School of Biological Science and Engineering,Beifang University of Nationalities,Yinchuan 750021,China
  • Online:2014-03-29 Published:2014-12-08

摘要: 本文旨在研究甘草黄酮(LF)对2型糖尿病大鼠肝脏中GSK-3β蛋白表达的影响。采用高脂高糖饲料喂养结合一次性小剂量腹腔注射链脲佐菌素(STZ)的方法建立2型糖尿病(T2DM)实验大鼠模型。将实验大鼠分为正常对照组(CON)、糖尿病模型组(DM)、甘草黄酮治疗组(LF)和阳性对照组(PC)。分别以溶剂(1,2-丙二醇)、甘草黄酮[300 mg/(kg·d) ]或吡格列酮[10 mg/(kg·d) ]连续灌胃6周。采用蛋白免疫印迹(Westernblotting)方法检测各组大鼠肝脏中GSK-3β的蛋白表达量。研究结果显示,DM组大鼠肝脏组织中GSK-3β的蛋白表达量较CON组显著升高(P<0.01);其在LF组和PC组的表达量与DM组相比均显著降低(P<0.05)。上述结果表明,LF能显著降低2型糖尿病大鼠肝脏中GSK-3β的蛋白表达量,这可能是其改善胰岛素抵抗的分子机制之一。

关键词: 甘草黄酮, 2型糖尿病, 胰岛素抵抗, GSK-3&beta, 蛋白表达量

Abstract: This study aimed to investigate the effect of licorice flavonoids (LF) on GSK-3β protein expression in liver of type 2 diabetic rats.The type 2 diabetic rat model was replicated by high-fat and high-sugar diet combined with low-dose streptozotocin (STZ) injection.The rats were divided into control group (CON),diabetic model group (DM),LF treatment group (LF),and positive control group (PC).Rats in different groups were administered with solvent (1,2-propanediol),licorice flavonoids [300mg/(kg·d)]or pioglitazone [10mg/(kg·d)],respectively.The protein expression level of GSK-3β in liver was detected by Western blotting.The experimental results showed that the protein expression level of GSK-3β in DM group was significantly higher than that of the CON group (P<0.01),while its expression level in LF group and PC group significantly reduced (P<0.05) compared with CON group.These results suggested that licorice flavonoids can significantly decrease the protein expression level of GSK-3β in liver of T2DM rats.This might be one of the molecular mechanisms that LF ameliorated insulin resistance.

Key words: licorice flavonoids, type 2 diabetes mellitus, insulin resistance, GSK-3&beta, protein expression level

中图分类号: 

R966