alexa Infusion of docosahexaenoic acid protects against myocardial infarction.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Richard D, Oszust F, Guillaume C, Millart H, LaurentMaquin D,

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Abstract Most of the cardioprotective effects of long-chain omega 3 fatty acids, namely docosahexaenoic (DHA; 22:6n-3) and eicosapentaenoic (EPA; 20:5n-3), are due to their hypotriglyceridemic and anti-inflammatory effects, which lower the risk for cardiovascular disease and myocardial infarction. Little is known on the direct preventive activities of DHA and EPA on heart function. In isolated hearts, we studied (1) whether infused DHA is able to protect the heart from ischemia/reperfusion damage and (2) the role played by Notch-mediated signal transduction pathways in myocardial infarction. Perfusion with DHA before and before/after induction of ischemia reperfusion significantly diminished cardiac damage and afforded antioxidant protection. Mechanistically, infusion of DHA before and before/after the induction of ischemia differentially modulated the expression of Notch2 and 3 target genes. In particular, DHA increased the expression of Hey1 when infused pre- and pre/post-ischemia; Jagged 1 and the Notch2 receptors increased with DHA pre-ischemia, but not pre/post; Notch2 and 3 receptors as well as Delta increased following DHA administration pre- and (especially) pre/post-ischemia. In conclusion, while the precise nature of the Notch-mediated protection from ischemia/reperfusion afforded by DHA is as yet to be fully elucidated, our data add to the growing body of literature that indicates how systemic administration of DHA provides cardiovascular protection. Copyright © 2014 Elsevier Ltd. All rights reserved. This article was published in Prostaglandins Leukot Essent Fatty Acids and referenced in Journal of Addiction Research & Therapy

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