Exogenous neuropeptide Y blocks myoelectric activity in the upper gastrointestinal tract of starved dogs. Brain neuropeptide Y converts a fasting pattern of myoelectric activity to a fed pattern.

Published

Journal Article

The effect of intracerebroventricular (ICV) neuropeptide Y (NPY) on the migrating motor complex (MMC) was examined in five starved dogs. Myoelectric activity was recorded using gastric, duodenal, and jejunal electrodes. Intragastric pressure was monitored via a gastric fistula, and ICV injections were given through a cerebroventricular guide. Recordings were made with no ICV injection and before and after 250-microliters bolus injections of vehicle as control (0.1% dog serum albumin in saline) or 500 pmol/kg NPY. The mean interval between MMCs was 98 +/- 10 min without ICV injection and 96 +/- 7 min after control solution. After ICV injection of NPY no further MMCs were recorded in any dog, even though the study was continued for a minimum of 3.5 h. Instead, the myoelectric pattern became indistinguishable from that in fed dogs. We conclude that central NPY plays a role in modulation of upper gastrointestinal myoelectric activity. This may reflect a central regulatory role for NPY in the coordination of feeding.

Full Text

Duke Authors

Cited Authors

  • Thomson, HJ; Geoghegan, JG; Farouk, M; Saperstein, LA; Chung, K; Meyers, WC; Pappas, TN

Published Date

  • June 1, 1993

Published In

Volume / Issue

  • 28 / 6

Start / End Page

  • 469 - 474

PubMed ID

  • 8322021

Pubmed Central ID

  • 8322021

International Standard Serial Number (ISSN)

  • 0036-5521

Digital Object Identifier (DOI)

  • 10.3109/00365529309098251

Language

  • eng

Conference Location

  • England