南京医科大学学报（英文版）2008，Vol.22Issue(6)：356-361,6.
Downregulation of metabotropic glutamate receptors mGluR5 and glutamate transporter EAAC1 in the myenteric plexus of the diabetic rat ileum
Downregulation of metabotropic glutamate receptors mGluR5 and glutamate transporter EAAC1 in the myenteric plexus of the diabetic rat ileum
Yanhua Bai 1Jun Zhang 1Hongyang Shi 1Fei Dai1
作者信息
- 1. Department of Gastroenterology, Second Hospital of Xi' an Jiaotong University, Xi" an 710004, Shanxi Province,China
- 折叠
摘要
Abstract
Objective: To study the morphologic abnormalities of the myenteric plexus in diabetic rats and to explore the mechanism of their effect on gastrointestinal motility. Methods: Forty rats were randomly divided into a diabetic group and a control group, Gastric emptying and small intestine transit rates were measured and histologic and molecular changes in glutamatergic nerves in the ileal myenteric plexus were observed, mGluR5 receptor and EAAC1 transporter changes in the diabetic rats were studied using fluorescence immunohistochemistry and RT-PCR. Results:Eighteen weeks after the establishment of the diabetic rats model, gastric emptying and small intestine transit rates were found to be significantly delayed in the diabetic group when compared with the control group. The density of glutamatergic ganglia and neurons in the ileal myenterie plexus were significantly decreased in the diabetic group when compared with control group(P＜0.05) and the mGluR5 receptors and EAAC1 transporters were downregulated in the diabetic rats(P＜0.05). Conclusion: Decreased glutamatergic enteric ganglia and neurons and decreased mGluR5 receptors and EAAC1 transporters in the intestinal myenteric plexus is one of the mechanisms of diabetic gastroenteropathy in rats.关键词
Glutamate/mGluR5/EAAC1/Enteric Nervous System/Diabetic gastroenteropathyKey words
Glutamate/mGluR5/EAAC1/Enteric Nervous System/Diabetic gastroenteropathy分类
临床医学引用本文复制引用
Yanhua Bai,Jun Zhang,Hongyang Shi,Fei Dai..Downregulation of metabotropic glutamate receptors mGluR5 and glutamate transporter EAAC1 in the myenteric plexus of the diabetic rat ileum[J].南京医科大学学报（英文版）,2008,22(6):356-361,6.
