GLP-1 and GLP-2 act in concert to inhibit fasted, but not fed, small bowel motility in the rat


Bozkurt A., Naslund E., Holst J., Hellstrom P.

REGULATORY PEPTIDES, vol.107, pp.129-135, 2002 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 107
  • Publication Date: 2002
  • Doi Number: 10.1016/s0167-0115(02)00095-2
  • Title of Journal : REGULATORY PEPTIDES
  • Page Numbers: pp.129-135

Abstract

Small bowel motility was studied in rats at increasing (1-20 pmol/kg/min) intravenous doses of either glucagon-like peptide-1 (GLP-1) or glucagon-like peptide-2 (GLP-2) alone, or in combination in the fasted and fed state. There was a dose-dependent inhibitory action of GLP-1 on the migrating myoelectric complex (MMC), where the dose of 5 pmol/kg/min induced an increased MMC cycle length. No effect was seen with GLP-2 alone, but the combination of GLP-1 and GLP-2 induced a more pronounced inhibitory effect, with significant increase of the MMC cycle length from a dose of 2 pmol/kg/min. During fed motility, infusion of GLP-1 resulted in an inhibition of spiking activity compared to control. In contrast, infusion of GLP-2 only numerically increased spiking activity compared to control, while the combination of GLP-1 and GLP-2 resulted in no change compared to control. In summary, this study demonstrates an additive effect of peripheral administration of GLP-1 and GLP-2 on fasted small bowel motility. In the fed state, GLP-1 and GLP-2 seem to display counter-balancing effects on motility of the small intestine. (C) 2002 Elsevier Science B.V All rights reserved.