In situ generation, metabolism and immunomodulatory signaling actions of nitro-conjugated linoleic acid in a murine model of inflammation.
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Salvatore, Sonia R
Khoo, Nicholas K
Berman, Rebecca C
Woodcock, Steven R
Chen, Y Eugene
Freeman, Bruce A
Ferreira, Ana M
Schopfer, Francisco J
Vitturi, Dario A
MetadataShow full item record
AbstractConjugated linoleic acid (CLA) is a prime substrate for intra-gastric nitration giving rise to the formation of nitro-conjugated linoleic acid (NO2-CLA). Herein, NO2-CLA generation is demonstrated within the context of acute inflammatory responses both in vitro and in vivo. Macrophage activation resulted in dose- and time-dependent CLA nitration and also in the production of secondary electrophilic and non-electrophilic derivatives. Both exogenous NO2-CLA as well as that generated in situ, attenuated NF-κB-dependent gene expression, decreased pro-inflammatory cytokine production and up-regulated Nrf2-regulated proteins. Importantly, both CLA nitration and the corresponding downstream anti-inflammatory actions of NO2-CLA were recapitulated in a mouse peritonitis model where NO2-CLA administration decreased pro-inflammatory cytokines and inhibited leukocyte recruitment. Taken together, our results demonstrate that the formation of NO2-CLA has the potential to function as an adaptive response capable of not only modulating inflammation amplitude but also protecting neighboring tissues via the expression of Nrf2-dependent genes.
CitationIn situ generation, metabolism and immunomodulatory signaling actions of nitro-conjugated linoleic acid in a murine model of inflammation. 2018, 15:522-531 Redox Biol
AffiliationTWINCORE, Zentrum für experimentelle und klinischeInfektionsforschung GmbH, Feodor-Lynen-Str. 7, 30625 Hannover, Germany.
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Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-sa/4.0/
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