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Fat and pancreatic secretion.

O Olsen1, O B Schaffalitzky de Muckadell, P Cantor

  • 1Dept. of Surgical Gastroenterology C, Rigshospitalet, Copenhagen, Denmark.

Scandinavian Journal of Gastroenterology
|January 1, 1989
PubMed
Summary
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Fat digestion in healthy volunteers stimulates secretin and cholecystokinin (CCK) release. Hormone release depends on fat dose and emulsification, with CCK having a lower release threshold than secretin.

Area of Science:

  • Gastroenterology
  • Endocrinology
  • Human Physiology

Background:

  • Fatty acids in the duodenum stimulate pancreaticobiliary secretion.
  • Secretin and cholecystokinin (CCK) are key hormones regulating digestion.
  • Understanding their release mechanisms is crucial for digestive health.

Purpose of the Study:

  • To investigate the effects of intraduodenal oleic acid on pancreaticobiliary secretion.
  • To examine the impact of varying oleic acid concentrations and emulsification on hormone release.
  • To determine the relationship between fat load, emulsification, and secretin/CCK plasma levels.

Main Methods:

  • 10 healthy volunteers participated in the study.
  • Intraduodenal oleic acid was administered at varying concentrations (0-40 mM).

Related Experiment Videos

  • Different degrees of fat emulsification were tested to assess their impact.
  • Main Results:

    • Secretin and CCK release correlated directly with fat dose and emulsification.
    • CCK release threshold was lower than secretin release threshold.
    • Increased emulsification did not yield a simple correlation between hormone levels and pancreatic secretion.

    Conclusions:

    • Secretin and CCK are released dose-dependently by oleic acid emulsions in humans.
    • Distinct release thresholds exist for secretin and CCK.
    • Fat emulsification influences hormone release, but its precise relationship with pancreatic secretion requires further study.