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Article Publish Status: FREE
Abstract Title:

Oleuropein Induces AMPK-Dependent Autophagy in NAFLD Mice, Regardless of the Gender.

Abstract Source:

Int J Mol Sci. 2018 Dec 8 ;19(12). Epub 2018 Dec 8. PMID: 30544824

Abstract Author(s):

Cristiana Porcu, Silvia Sideri, Maurizio Martini, Alessandra Cocomazzi, Andrea Galli, Giovanni Tarantino, Clara Balsano

Article Affiliation:

Cristiana Porcu

Abstract:

Oleuropein (Ole) is one of the most plentiful phenolic compounds with antioxidant, anti-inflammatory, anti-atherogenic, hypoglycemic and hypolipidemic effects. The aim of our study was to establish whether the positive Ole-related effects on liver steatosis could be associated with autophagy. Female and male C57BL/6J mice were fed normal diet (ND) or high-fat diet (HFD) for eight weeks, and Ole was added or not for the following eight weeks. The autophagy-related proteins Akt, mTOR, AMPK, ULK1, Beclin-1, LC3B and p62/Sqstm1 were analyzed. Interestingly, Ole induced a different regulation of the Akt/mTOR pathway in female compared to male mice, but was able to activate the autophagic process in ND and HFD mice through AMPK-dependent phosphorylation of ULK1 at Ser555, regardless of the gender. Our work reveals the ability of Ole to induce, in liver of ND and HFD mice, autophagy independently by gender-specific mTOR activation. We highlight Ole as a novel therapeutic approach to counteract unhealthy diet-related liver steatosis by targeting autophagy.

Study Type : Animal Study

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