Adaptation to fat markedly increases pancreatic secretory response to intraduodenal fat in rats.

Published

Journal Article

Exposure to higher levels of fat in the diet increases the secretion of fat-digesting enzymes in pancreatic juice. This study examines the functional consequences of this phenomenon and demonstrates that adapting rats to high fat (triglyceride) loads increases the release of cholecystokinin (CCK) and the pancreatic secretory response to intraduodenal fat. Lipolytic activity in the small intestine was also higher in adapted rats. Exchanging pancreatic juice from unadapted rats with pancreatic juice from adapted rats decreased the response to fat in adapted rats and increased the response to fat in unadapted rats. Infusing oleic acid into unadapted rats stimulated CCK secretion and pancreatic exocrine secretion to levels observed with triglycerides in adapted rats. Pancreatic exocrine secretion in response to intraduodenal fat in rats adapted to a high-fat (20%) diet were significantly higher than the responses seen in rats fed a low-fat (5%) diet. Adaptation to fat increases the pancreatic secretory and plasma CCK responses to fat, apparently by increasing the efficiency of triglyceride digestion and thereby increasing CCK release.

Full Text

Duke Authors

Cited Authors

  • Spannagel, AW; Nakano, I; Tawil, T; Chey, WY; Liddle, RA; Green, GM

Published Date

  • January 1, 1996

Published In

Volume / Issue

  • 270 / 1 Pt 1

Start / End Page

  • G128 - G135

PubMed ID

  • 8772510

Pubmed Central ID

  • 8772510

Electronic International Standard Serial Number (EISSN)

  • 2163-5773

International Standard Serial Number (ISSN)

  • 0002-9513

Digital Object Identifier (DOI)

  • 10.1152/ajpgi.1996.270.1.g128

Language

  • eng