Mitochondrial (dys)function and insulin resistance: From pathophysiological molecular mechanisms to the impact of diet

Domenico Sergi, Nenad Naumovski, Leonie Heilbronn, Mahinda Abeywardena, Nathan O'Callaghan, Lillà Lionetti, Natalie Luscombe-Marsh

Research output: Contribution to journalReview article

22 Citations (Scopus)

Abstract

Mitochondrial dysfunction has been implicated in the pathogenesis of insulin resistance, the hallmark of type 2 diabetes mellitus (T2DM). However, the cause-effect relationship remains to be fully elucidated. Compelling evidence suggests that boosting mitochondrial function may represent a valuable therapeutic tool to improve insulin sensitivity. Mitochondria are highly dynamic organelles, which adapt to short- and long-term metabolic perturbations by undergoing fusion and fission cycles, spatial rearrangement of the electron transport chain complexes into supercomplexes and biogenesis governed by peroxisome proliferator-activated receptor γ co-activator 1α (PGC 1α). However, these processes appear to be dysregulated in type 2 diabetic individuals. Herein, we describe the mechanistic link between mitochondrial dysfunction and insulin resistance in skeletal muscle alongside the intracellular pathways orchestrating mitochondrial bioenergetics. We then review current evidence on nutritional tools, including fatty acids, amino acids, caloric restriction and food bioactive derivatives, which may enhance insulin sensitivity by therapeutically targeting mitochondrial function and biogenesis.

LanguageEnglish
Article number532
JournalFrontiers in Physiology
Volume10
DOIs
Publication statusPublished - 1 May 2019

Keywords

  • Insulin resistance
  • Lipotoxicity
  • Mitochondrial function
  • Oxidative metabolism
  • Skeletal muscle

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

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