Influence of NAFLD and bariatric surgery on hepatic and adipose tissue mitochondrial biogenesis and respiration

Julie S. Pedersen (Corresponding Author), Marte O. Rygg, Karoline Chrøis, Elahu G. Sustarsic, Zach Gerhart-Hines, Nicolai J. Wever Albrechtsen, Reza R. Serizawa, Viggo B. Kristiansen, Astrid L. Basse, Astrid E.B. Boilesen, Beth H. Olsen, Torben Hansen, Lise Lotte Gluud, Sten Madsbad, Steen Larsen, Flemming Bendtsen, Flemming Dela

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Impaired mitochondrial oxidative phosphorylation (OXPHOS) in liver tissue has been hypothesised to contribute to the development of nonalcoholic steatohepatitis in patients with nonalcoholic fatty liver disease (NAFLD). It is unknown whether OXPHOS capacities in human visceral (VAT) and subcutaneous adipose tissue (SAT) associate with NAFLD severity and how hepatic OXPHOS responds to improvement in NAFLD. In biopsies sampled from 62 patients with obesity undergoing bariatric surgery and nine control subjects without obesity we demonstrate that OXPHOS is reduced in VAT and SAT while increased in the liver in patients with obesity when compared with control subjects without obesity, but this was independent of NAFLD severity. In repeat liver biopsy sampling in 21 patients with obesity 12 months after bariatric surgery we found increased hepatic OXPHOS capacity and mitochondrial DNA/nuclear DNA content compared with baseline. In this work we show that obesity has an opposing association with mitochondrial respiration in adipose- and liver tissue with no overall association with NAFLD severity, however, bariatric surgery increases hepatic OXPHOS and mitochondrial biogenesis.

Original languageEnglish
Article number2931
Number of pages15
JournalNature Communications
Volume13
Issue number1
DOIs
Publication statusPublished - Dec 2022
Externally publishedYes

Field of Science*

  • 1.4 Chemical sciences
  • 3.1 Basic medicine

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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