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Background/Objectives . Obesity and metabolic syndrome and associated adiposity are a systemic condition characterized by increased mitochondrial dysfunction, inflammation, and inhibition of antioxidant genes, HO-1, and EETs levels. We postulate that EETs attenuate adiposity by stimulating mitochondrial function and induction of HO-1 via activation of PGC-1 α  in adipose and hepatic tissue.  Methods . Cultured murine adipocytes and mice fed a high fat (HF) diet were used to assess the functional relationship among EETs, PGC-1 α , HO-1, and mitochondrial signaling using an EET-agonist (EET-A) and PGC-1 α -deficient cells and mice using lentiviral PGC-1 α (sh).  Results . EET-A is a potent inducer of PGC-1 α , HO-1, mitochondrial biogenesis (cytochrome oxidase subunits 1 and 4 and SIRT3), fusion proteins (Mfn 1/2 and OPA1) and fission proteins (DRP1 and FIS1) ( p  < 0.05), fasting glucose, BW, and blood pressure. These beneficial effects were prevented by administration of lenti-PGC-1 α (sh). EET-A administration prevented HF diet induced mitochondrial and dysfunction in adipose tissue and restored VO 2  effects that were abrogated in PGC-1 α -deficient mice.  Conclusion . EET is identified as an upstream positive regulator of PGC-1 α  that leads to increased HO-1, decreased BW and fasting blood glucose and increased insulin receptor phosphorylation, that is, increased insulin sensitivity and mitochondrial integrity, and possible use of EET-agonist for treatment of obesity and metabolic syndrome.

journal of nutrition and metabolism

Downregulation of PGC-1<i>α</i>Prevents the Beneficial Effect of EET-Heme Oxygenase-1 on Mitochondrial Integrity and Associated Metabolic Function in Obese Mice

Downregulation of PGC-1αPrevents the Beneficial Effect of EET-Heme Oxygenase-1 on Mitochondrial Integrity and Associated Metabolic Function in Obese Mice