Effect of natural peptide YY on pancreatic secretion and cholecystokinin release in conscious dogs |
| |
Authors: | Dr. Ryo Hosotani MD Kazutomo Inoue MD Masafumi Kogire MD Kazuhiko Tatemoto PhD Viktor Mutt PhD Takashi Suzuki MD Phillip L. Rayford PhD Takayoshi Tobe MD |
| |
Affiliation: | (1) First Department of Surgery, Faculty of Medicine, Kyoto University, Kyoto, Japan;(2) Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 West Markham St., Slot 505, 72205 Little Rock, Arkansas;(3) Department of Biochemistry II, Nobel Medical Institute, Karolinska Institute, Stockholm, Sweden |
| |
Abstract: | The effects of natural peptide YY on pancreatic secretion under different stimulatory conditions and on fatty acid-induced cholecystokinin release were examined in five conscious dogs with pancreatic and gastric fistulas. Intravenous infusion of natural peptide YY at 1 and 0.2 g/kg/hr caused 60 and 40% inhibition of secretin- and cholecystokinin-stimulated secretion, respectively, and 40–50 and 20–40% inhibition of intraduodenal oleate stimulated secretion, respectively. A significant but transient decrease in the plasma cholecystokinin level was observed in response to peptide YY under oleate stimulation. The present study demonstrates that peptide YY has a potent inhibitory effect on both exogenously and endogenously stimulated pancreatic secretion and has a mild suppressive effect on fatty acid-induced cholecystokinin release, suggesting that this peptide is an important colonic inhibitor of pancreatic secretion.This work was supported in part by a grant from the Ministry of Education, Japan (A 59440057) and in part by NIH grant AM30415. |
| |
Keywords: | peptide YY cholecystokinin pancreatic secretion conscious dogs |
本文献已被 SpringerLink 等数据库收录! |
|