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Abstract Title:

Pomegranate extract prevents skeletal muscle of mice against wasting induced by acute TNF-α injection.

Abstract Source:

Mol Nutr Food Res. 2016 Nov 2. Epub 2016 Aug 2. PMID: 27804206

Abstract Author(s):

Julie Rodriguez, Olivier Caille, Daneel Ferreira, Marc Francaux

Article Affiliation:

Julie Rodriguez

Abstract:

SCOPE: We investigated whether punicalagin-rich pomegranate extract (PE) protects skeletal muscle of mice against inflammation induced by an acute injection of TNF-α.

RESULTS: Mice fed with PE or standard chow during six weeks were injected with TNF-α (100 ng/g) or vehicle and sacrificed six hours later. Prior supplementation with PE prevented the loss of tibialis anterior mass induced by TNF-α. In skeletal muscle, the activation of the NF-κB signaling and the induction of cytokines mRNA were reduced in mice having received PE. In those mice, the activity of the Akt/mTORC1 pathway and the protein synthesis were maintained after TNF-α injection whereas markers involved in the ubiquitin proteasome pathway were less activated. As urolithin A was the only punicalagin metabolite detectable in plasma of mice supplemented with PE, we performed in vitro experiments using a murine cell line (C2C12) to provide evidence that urolithin A is likely the active compound protecting skeletal muscle against TNF-α-induced inflammation.

CONCLUSION (FOCUS ON NUTRITIONAL RELEVANCE): These results suggest that supplementation with a punicalagin-rich pomegranate extract may protect skeletal muscle against an acute inflammation. This article is protected by copyright. All rights reserved.

Study Type : Animal Study

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