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PLoS One. 2013 Apr 8;8(4):e58626. doi: 10.1371/journal.pone.0058626. Print 2013.

Oleic, linoleic and linolenic acids increase ros production by fibroblasts via NADPH oxidase activation.

Author information

1
Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil. ehata@usp.br

Abstract

The effect of oleic, linoleic and γ-linolenic acids on ROS production by 3T3 Swiss and Rat 1 fibroblasts was investigated. Using lucigenin-amplified chemiluminescence, a dose-dependent increase in extracellular superoxide levels was observed during the treatment of fibroblasts with oleic, linoleic and γ-linolenic acids. ROS production was dependent on the addition of β-NADH or NADPH to the medium. Diphenyleneiodonium inhibited the effect of oleic, linoleic and γ-linolenic acids on fibroblast superoxide release by 79%, 92% and 82%, respectively. Increased levels of p47 (phox) phosphorylation due to fatty acid treatment were detected by Western blotting analyses of fibroblast proteins. Increased p47 (phox) mRNA expression was observed using real-time PCR. The rank order for the fatty acid stimulation of the fibroblast oxidative burst was as follows: γ-linolenic > linoleic > oleic. In conclusion, oleic, linoleic and γ-linolenic acids stimulated ROS production via activation of the NADPH oxidase enzyme complex in fibroblasts.

PMID:
23579616
PMCID:
PMC3620266
DOI:
10.1371/journal.pone.0058626
[Indexed for MEDLINE]
Free PMC Article

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