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Anti-Inflammatory Effect of Unsaturated Fatty Acids and Ergosta-7,22-dien-3-ol from Marthasterias glacialis: Prevention of CHOP-Mediated ER-Stress and NF-kappa B Activation

Title
Anti-Inflammatory Effect of Unsaturated Fatty Acids and Ergosta-7,22-dien-3-ol from Marthasterias glacialis: Prevention of CHOP-Mediated ER-Stress and NF-kappa B Activation
Type
Article in International Scientific Journal
Year
2014
Authors
David M Pereira
(Author)
FFUP
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Georgina Correia da Silva
(Author)
FFUP
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Journal
Title: PLoS ONEImported from Authenticus Search for Journal Publications
Vol. 9 No. 2
Final page: e88341
ISSN: 1932-6203
Other information
Authenticus ID: P-009-710
Abstract (EN): There has been increasing awareness to the potential interest of drug discovery from marine natural products to treat several pathological conditions, including inflammation. In this work we describe the anti-inflammatory activity of several compounds present in the echinoderm Marthasterias glacialis (spiny sea-star), using the inflammatory model RAW 264.7 cells challenged with LPS. Lipidomic profiling of the organism revealed two major classes of compounds: fatty acids and sterols. Among these, the predominant compounds cis 11-eicosenoic and cis 11,14 eicosadienoic acids and the unsaturated sterol ergosta-7,22-dien-3-ol were evaluated. The mechanism of action of the compounds was distinct as they modulated different levels of the inflammation pathway. Classical inflammatory markers, such as COX-2, iNOS, IL-6 and NF-kappa B, were evaluated. We also studied the contribution of the CHOP pathway-mediated ER-stress to the inflammatory process. Overall, the sterol ergosta-7,22-dien-3-ol was the most active compound, however maximum activity was obtained when all compounds were tested in combination, thus suggesting a potentially synergistic activity of both classes of metabolites. This work establishes the echinoderm M. glacialis as an interesting source of anti-inflammatory molecules.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 9
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