天然产物研究与开发 ›› 2019, Vol. 31 ›› Issue (3): 506-511.doi: 10.16333/j.1001-6880.2019.3.022

所属专题: No.3

• 开发研究 • 上一篇    下一篇

滇结香花改善糖尿病胰岛损伤及机制研究

王亚欣1,张志文1,任怡琳2,3,刘敏4,史劲松1,许正宏2,3,许泓瑜2,3*   

  1. 1江南大学药学院;2江南大学生物工程学院 工业生物技术教育部重点实验室;3江南大学 粮食发酵工艺与技术国家工程实验室,无锡 214122;4青藏高原微生物国家地方联合工程研究中心,拉萨 850000
  • 出版日期:2019-04-02 发布日期:2019-04-02

The improvement and the mechanism of impaired islets in diabetes mellitus of Edgeworthia gardneri(Wall.)Meissn

WANG Ya-xin1,ZHANG Zhi-wen1,REN Yi-lin2,3,LIU Min4,SHI Jin-song1,XU Zheng-hong2,3,XU Hong-yu2,3*   

  1. 1School of Pharmaceutical Science,Jiangnan University; 2Bioengineering Institute,Key Laboratory of Industrial Microbiology of Ministry of Education,Jiangnan University; 3National Engineering Laboratory for Cereal Fermention Technology,Jiangnan University,Wuxi 214122,China; 4National United Engineering Research Center for Tibetan Plateau Microbiology,Lasa 850000,China
  • Online:2019-04-02 Published:2019-04-02

摘要: 本文旨在评价滇结香花正己烷提取物(EGH)降糖及保护胰岛作用,并通过胰岛损伤细胞模型探究其作用机制。采用链脲佐菌素(STZ)联合高脂饲料诱导小鼠2型糖尿病模型,通过检测小鼠空腹血糖、糖化血红蛋白和胰岛素分泌,评价EGH的降糖和保护胰岛作用。并采用棕榈酸联合葡萄糖诱导胰岛RIN-m5F细胞损伤模型,对ROS生成量、caspase-3基因水平、AKT、FOXO1和JNK蛋白水平进行检测,探究EGH改善糖尿病胰岛损伤作用机制。结果表明EGH可以减少ROS 生成量、降低caspase-3基因转录水平、激活AKT抑制FOXO1,同时抑制JNK的激活,从而改善β细胞的损伤。

关键词: 糖尿病, 胰岛损伤, 滇结香花, 降糖, 信号通路

Abstract: The purpose of this study was to evaluate the hypoglycemic effect and protective effect of hexane extract (EGH) of Edgeworthia gardneri (Wall.) Meissn and to explore its mechanism through islet cell damage model.The model of type 2 diabetic mice induced by streptozotocin (STZ) combined with high fat diet was used to evaluate the effect of EGH on reducing the glucose and protecting the islet,by testing the fasting blood glucose,oral glucose tolerance,HbAlc and insulin secretion.On the model of RIN-m5F cell injury induced by palmitic acid combined with glucose,the level of ROS,caspase-3 gene,AKT,FOXO1 and JNK protein were detected to explore the mechanism of EGH to improve islet injury.The results showed that EGH could reduce the amount of ROS generation,reduce the transcription level of caspase-3 gene,activate AKT,inhibit FOXO1and inhibit the activation of JNK,thus improving the damage of β-cell.

Key words: diabetes, impaired islets, Edgeworthia gardneri (Wall.) Meissn, hypoglycemic effect, signaling pathway

中图分类号: 

R285 Q946