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Feeding mice a diet high in oxidized linoleic acid metabolites does not alter liver oxylipin concentrations. | LitMetric

Feeding mice a diet high in oxidized linoleic acid metabolites does not alter liver oxylipin concentrations.

Prostaglandins Leukot Essent Fatty Acids

Department of Food Science and Technology, College of Agriculture and Environmental Sciences, University of California Davis, Davis, CA, Unites States. Electronic address:

Published: September 2021

AI Article Synopsis

Article Abstract

The oxidation of dietary linoleic acid (LA) produces oxidized LA metabolites (OXLAMs) known to regulate multiple signaling pathways in vivo. Recently, we reported that feeding OXLAMs to mice resulted in liver inflammation and apoptosis. However, it is not known whether this is due to a direct effect of OXLAMs accumulating in the liver, or to their degradation into bioactive shorter chain molecules (e.g. aldehydes) that can provoke inflammation and related cascades. To address this question, mice were fed a low or high LA diet low in OXLAMs, or a low LA diet supplemented with OXLAMs from heated corn oil (high OXLAM diet). Unesterified oxidized fatty acids (i.e. oxylipins), including OXLAMs, were measured in liver after 8 weeks of dietary intervention using ultra-high pressure liquid chromatography coupled to tandem mass-spectrometry. The high OXLAM diet did not alter liver oxylipin concentrations compared to the low LA diet low in OXLAMs. Significant increases in several omega-6 derived oxylipins and reductions in omega-3 derived oxylipins were observed in the high LA dietary group compared to the low LA group. Our findings suggest that dietary OXLAMs do not accumulate in liver, and likely exert pro-inflammatory and pro-apoptotic effects via downstream secondary metabolites.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9157566PMC
http://dx.doi.org/10.1016/j.plefa.2021.102316DOI Listing

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