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Possible role of CYP450 generated omega-3/omega-6 PUFA metabolites in the modulation of blood pressure and vascular function in obese children

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Item Type:Article
Title:Possible role of CYP450 generated omega-3/omega-6 PUFA metabolites in the modulation of blood pressure and vascular function in obese children
Creators Name:Bonafini, S. and Giontella, A. and Tagetti, A. and Marcon, D. and Montagnana, M. and Benati, M. and Gaudino, R. and Cavarzere, P. and Karber, M. and Rothe, M. and Minuz, P. and Antonazzi, F. and Maffeis, C. and Schunck, W.H. and Fava, C.
Abstract:Obesity is often accompanied by metabolic and haemodynamic disorders such as hypertension, even during childhood. Arachidonic acid (AA) is metabolized by cytochrome P450 (CYP450) enzymes to epoxyeicosatrienoic acids (EETs) and 20-hydroxyeicosatetraenoic acid (20-HETE), vasoactive and natriuretic metabolites that contribute to blood pressure (BP) regulation. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) omega-3 polyunsaturated fatty acids may compete with AA for CYP450-dependent bioactive lipid mediator formation. We aimed at investigating the role of AA, EPA and DHA and their CYP450-dependent metabolites in BP control and vascular function in 66 overweight/obese children. Fatty acid profile moderately correlated with the corresponding CYP450-derived metabolites but their levels did not differ between children with normal BP (NBP) and high BP (HBP), except for higher EPA-derived epoxyeicosatetraenoic acids (EEQs) and their diols in HBP group, in which also the estimated CYP450-epoxygenase activity was higher. In the HBP group, EPA inversely correlated with BP, EEQs inversely correlated both with systolic BP and carotid Intima-Media Thickness (cIMT). The DHA-derived epoxydocosapentaenoic acids (EDPs) were inversely correlated with diastolic BP. Omega-3 derived epoxymetabolites appeared beneficially associated with BP and vascular structure/function only in obese children with HBP. Further investigations are needed to clarify the role of omega-3/omega-6 epoxymetabolites in children's hemodynamics.
Keywords:CYP450 Eicosanoids, Omega-3 PUFA, Omega-6 PUFA, Blood Pressure, Hemodynamics, Children, EETs, EEQs
Source:Nutrients
ISSN:2072-6643
Publisher:MDPI (Switzerland)
Volume:10
Number:11
Page Range:1689
Date:5 November 2018
Official Publication:https://doi.org/10.3390/nu10111689
PubMed:View item in PubMed

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