天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (7): 1103-1107.

所属专题: No.3

• 开发研究 • 上一篇    下一篇

海带多糖对糖尿病小鼠降钙素受体样受体表达的影响

帅 莉1,李晓丹2,郭瑜璇3,郭云良2*,段德麟4,董永阳5   

  1. 1 青岛大学化学与环境工程学院,青岛 266071;2 青岛大学中西医结合中心,青岛 266021;3 河海大学海洋 科学系,南京210098;4 中国科学院海洋研究所,青岛 266071;5 山东海芝宝科技有限公司,威海 264300
  • 出版日期:2014-07-31 发布日期:2014-11-09

Effect of Laminaria japonica Polysaccharide on the Expression of Calcitonin Receptor-like Receptor in Diabetes Mellitus Model Mice

SHUAI Li1, LI Xiao-dan2, GUO Yu-xuan3, GUO Yun-liang2*, DUAN De-lin4, DONG Yong-yang5   

  1. 1 School of Chemistry and Environment Engineering,Qingdao University,Qingdao 266071, China; 2 Institute of  Integrative Medicine,Qingdao University,Qingdao 266021, China; 3 Department of Oceanology,Hehai University, Nanjing 210098,China; 4 Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071, China; 5 Shandong Haizhibao Science and Technology Co.Ltd.,Weihai 264300 ,China
  • Online:2014-07-31 Published:2014-11-09

摘要: 探讨海带多糖对实验性2型糖尿病小鼠降钙素受体样受体(CrlR)表达的影响及其降糖作用的研究。健康雄性昆明小鼠40只,高脂饲料喂养并腹腔注射四氧嘧啶建立2型糖尿病模型,海带多糖灌胃干预治疗。自动血糖仪检测小鼠空腹血糖(FBG)水平,免疫组织化学和Western blot检测脑干、肝脏和胰腺组织中CrlR蛋白表达,RTPCR检测CrlR mRNA表达。经海带多糖治疗后,动物血清空腹FBG水平较模型组显著降低(P<0.05);肝脏和胰岛细胞CrlR mRNA及其蛋白表达水平显著升高(P<0.05)。实验表明海带多糖可能通过提高肝脏和胰岛细胞CrlR表达,减轻胰岛素抵抗,发挥降糖作用。

关键词: 海带多糖, 2型糖尿病, 胰淀素, 降钙素受体样受体, 小鼠

Abstract: To investigate the effect of Laminaria japonica polysaccharide (LJPS) on the expression of calcitonin receptor-like receptor (CrlR) and the hypoglycemic effect on type 2 diabetes mellitus mice.Type 2 diabetes mellitus mouse model was established by feeding high fatty forage and injecting alloxan intraperitoneally in 40 healthy male mice and treated with LJPS orally.The level of fasting blood glucose (FBG) was detected by automatic blood glucose device.The expression of CrlR was determined by immunohistochemisty and Western blot,and the expression of CrlR mRNA was detected by RT-PCR.After treated with L.japonica, the serum level of FBG were decreased significantly compared with that of model group (P<0.05).In the liver and pancreas,the expression levels of CrlR mRNA and CrlR protein were significantly higher than those in model group (P<0.05).This experiment showed that LJPS played a hypoglycemic effect by promoting the expression of CrlR in liver and pancreatic tissue to lessen insulin resistance (IR).

Key words: Laminaria japonica polysaccharide, type 2 diabetes, amylin, calcitonin receptor-like receptor, mice

中图分类号: 

R93