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Palmitoylethanolamide counteracts hepatic metabolic inflexibility modulating mitochondrial function and efficiency in diet-induced obese mice

Chiara Annunziata, Adriano Lama, Claudio Pirozzi, Gina Cavaliere, Giovanna Trinchese, Francesca Di Guida, Allegra Nitrato Izzo, Fabiano Cimmino, Orlando Paciello, Davide De Biase, Elisabetta Murru, Sebastiano Banni, Antonio Calignano, Maria Pina Mollica, Giuseppina Mattace Raso, Rosaria Meli. FASEB J. 2020 Jan;34(1):350-364.

Laboratory studyHumansOther animals

Design
Laboratory study
Subjects
Mice fed a high-fat diet, plus human HepG2 liver cells challenged with palmitate; numbers not stated in the abstract
Dose used in the study
Palmitoylethanolamide 30 mg/kg per day by mouth in mice; concentration in cells not stated
Duration
Described as long-term; exact length not stated in the abstract
What was measured
Liver fat, energy expenditure and insulin resistance in mice; oxidative capacity and efficiency of isolated liver mitochondria; mitochondrial bioenergetics, fat accumulation and fatty acid oxidation in HepG2 cells; the role of AMPK.

What the authors reported

This lab study found:

  • Long-term oral PEA limited liver fat accumulation, increased energy expenditure and markedly reduced insulin resistance in high-fat-fed mice.
  • In isolated mitochondria PEA changed oxidative capacity and efficiency, with less lipid accumulation and oxidative stress.
  • In insulin-resistant HepG2 cells PEA recovered mitochondrial function, reduced fat and increased fatty acid oxidation.
  • Blocking AMPK limited these effects.

Limits of this study

A mouse and cell study; it cannot show effect in people. Study length and animal numbers are not in the abstract. Funding and conflicts not stated in the abstract.

Source

PubMed 31914699 · doi:10.1096/fj.201901510RR

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.