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Dietary oleic acid contributes to the regulation of food intake through the synthesis of intestinal oleoylethanolamide

Miki Igarashi, Kensuke Iwasa, Tetsuhiko Hayakawa, Tsuyoshi Tsuduki, Ikuo Kimura, Kei Maruyama, Keisuke Yoshikawa. Front Endocrinol (Lausanne). 2023 Jan 17:13:1056116.

Laboratory studyOther animals

Design
Laboratory study
Subjects
Mice fed an oleic acid diet or a low oleic acid diet; numbers not stated in the abstract
Dose used in the study
No palmitoylethanolamide was given; diets contained 38.4 or 3.1 mg oleic acid per gram, with oleic acid or OEA treatment in some groups
Duration
Two weeks
What was measured
Jejunal OEA, LEA and PEA levels; food intake and body weight gain; response to switching diets and to oleic acid or OEA treatment.

What the authors reported

This laboratory study found:

  • Mice on the low oleic acid diet had lower jejunal OEA but unchanged LEA and PEA, ate more and gained more weight.
  • The rise in intake appeared at once after the switch and reversed on switching back.
  • Oleic acid or OEA treatment reduced the effect.

Limits of this study

A mouse study; it cannot show effect in people or animals treated in practice. PEA was measured, not given, and did not change. The authors declare no commercial or financial conflicts.

Source

PubMed 36733808 · doi:10.3389/fendo.2022.1056116

Entry checked against the abstract on PubMed on 2026-09-22. The dose shown is the dose the researchers used. It is not a recommendation. How to read this page.