Omega-3-fatty acids improve in vivo and in vitro platelet function

1994 ◽  
Vol 109 (1-2) ◽  
pp. 322
Author(s):  
C. Pirich ◽  
A. Gaszo ◽  
D. Horrobin ◽  
S. Granegger ◽  
H. Sinzinger
Keyword(s):  
Fatty Acids ◽  
Platelet Function ◽  
Omega 3 Fatty Acids ◽  
Omega 3

scholarly journals Role of Omega-3 Polyunsaturated Fatty Acids in the Production of Prostaglandin E2and Nitric Oxide during Experimental Murine Paracoccidioidomycosis

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
S. C. Sargi ◽  
M. M. O. Dalalio ◽  
A. G. Moraes ◽  
J. E. L. Visentainer ◽  
D. R. Morais ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Peritoneal Macrophages ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Potential Health ◽  
Macrophage Activity ◽  
Experimental Paracoccidioidomycosis

There has recently been increased interest in the potential health effects of omega-3 polyunsaturated fatty acids on the immune system. Paracoccidioidomycosis is the most important endemic mycosis in Latin America. Macrophages have a fundamental role and act as first line of organism defense. The purpose of this study was to analyze the effect of n-3 fatty acids on the production of PGE2and NO by mice infected with Pb18 and fed a diet enriched with LNA for 8 weeks. To study the effect of omega-3 fatty acids on macrophage activity during experimental paracoccidioidomycosis, mice were infected with Pb18 and fed a diet supplemented with LNA. PGE2in the serum of animals was analyzed and NO in the supernatants of macrophages cultured and challengedin vitrowith Pb18 was measured. Omega-3 fatty acids seemed to decrease the production of PGE2in vivoin the infected group fed an LNA-supplemented diet during the 4th and 8th weeks of the experiment. At the same time, we observed an increase in synthesis of NO by peritoneal macrophages in this group. Omega-3 fatty acids thus appear to have an immunomodulatory effect in paracoccidioidomycosis.

Oxidized omega-3 fatty acids in fish oil inhibit leukocyte-endothelial interactions through activation of PPARα

Blood ◽  
2002 ◽  
Vol 100 (4) ◽  
pp. 1340-1346 ◽  
Author(s):  
Sanjeev Sethi ◽  
Ouliana Ziouzenkova ◽  
Heyu Ni ◽  
Denisa D. Wagner ◽  
Jorge Plutzky ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fish Oil ◽  
Inflammatory Diseases ◽  
Receptor Expression ◽  
Peroxisome Proliferator ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Peroxisome Proliferator Activated Receptor

Omega-3 fatty acids, which are abundant in fish oil, improve the prognosis of several chronic inflammatory diseases although the mechanism for such effects remains unclear. These fatty acids, such as eicosapentaenoic acid (EPA), are highly polyunsaturated and readily undergo oxidation. We show that oxidized, but not native unoxidized, EPA significantly inhibited human neutrophil and monocyte adhesion to endothelial cells in vitro by inhibiting endothelial adhesion receptor expression. In transcriptional coactivation assays, oxidized EPA potently activated the peroxisome proliferator-activated receptor α (PPARα), a member of the nuclear receptor family. In vivo, oxidized, but not native, EPA markedly reduced leukocyte rolling and adhesion to venular endothelium of lipopolysaccharide (LPS)–treated mice. This occurred via a PPARα-dependent mechanism because oxidized EPA had no such effect in LPS-treated PPARα-deficient mice. Therefore, the beneficial effects of omega-3 fatty acids may be explained by a PPARα-mediated anti-inflammatory effect of oxidized EPA.

scholarly journals Addition of marine omega-3 fatty acids to statins in familial hypercholesterolemia does not affect in vivo or in vitro endothelial function

2019 ◽  
Vol 13 (5) ◽  
pp. 762-770 ◽  
Author(s):  
Liv Nesse Hande ◽  
Hilde Thunhaug ◽  
Terje Enebakk ◽  
Judith Ludviksen ◽  
Kristin Pettersen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Endothelial Function ◽  
Familial Hypercholesterolemia ◽  
Omega 3 Fatty Acids ◽  
Omega 3

scholarly journals Hepatic de novo lipogenesis is suppressed and fat oxidation is increased by omega-3 fatty acids at the expense of glucose metabolism

2020 ◽  
Vol 8 (1) ◽  
pp. e000871 ◽  
Author(s):  
Charlotte J Green ◽  
Camilla Pramfalk ◽  
Catriona A Charlton ◽  
Pippa J Gunn ◽  
Thomas Cornfield ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Plasma Glucose ◽  
De Novo ◽  
In Vitro Studies ◽  
De Novo Lipogenesis ◽  
Metabolic Effects ◽  
Omega 3 Fatty Acids ◽  
Omega 3

ObjectiveIncreased hepatic de novo lipogenesis (DNL) is suggested to be an underlying cause in the development of nonalcoholic fatty liver disease and/or insulin resistance. It is suggested that omega-3 fatty acids (FA) lower hepatic DNL. We investigated the effects of omega-3 FA supplementation on hepatic DNL and FA oxidation using a combination of human in vivo and in vitro studies.Research design and methodsThirty-eight healthy men were randomized to take either an omega-3 supplement (4 g/day eicosapentaenoic acid (EPA)+docosahexaenoic acid (DHA) as ethyl esters) or placebo (4 g/day olive oil) and fasting measurements were made at baseline and 8 weeks. The metabolic effects of omega-3 FAs on intrahepatocellular triacylglycerol (IHTAG) content, hepatic DNL and FA oxidation were investigated using metabolic substrates labeled with stable-isotope tracers. In vitro studies, using a human liver cell-line was undertaken to gain insight into the intrahepatocellular effects of omega-3 FAs.ResultsFasting plasma TAG concentrations significantly decreased in the omega-3 group and remained unchanged in the placebo group. Eight weeks of omega-3 supplementation significantly decreased IHTAG, fasting and postprandial hepatic DNL while significantly increasing dietary FA oxidation and fasting and postprandial plasma glucose concentrations. In vitro studies supported the in vivo findings of omega-3 FAs (EPA+DHA) decreasing intracellular TAG through a shift in cellular metabolism away from FA esterification toward oxidation.ConclusionsOmega-3 supplementation had a potent effect on decreasing hepatic DNL and increasing FA oxidation and plasma glucose concentrations. Attenuation of hepatic DNL may be considered advantageous; however, consideration is required as to what the potential excess of nonlipid substrates (eg, glucose) will have on intrahepatic and extrahepatic metabolic pathways.Trial registration numberNCT01936779.

Abstract 2454: Omega-3 fatty acids DHA and EPA decrease oncogenic PGE2 in medulloblastoma in vitro and in vivo

2016 ◽  
Author(s):  
Linda Ljungblad ◽  
Filip Bergqvist ◽  
Teodora Andonova ◽  
Per-Johan Jakobsson ◽  
John Inge Johnsen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3

scholarly journals Dose-response effects of omega-3 on platelet aggregation: an observational study

2018 ◽  
Vol 46 (12) ◽  
pp. 5074-5082 ◽  
Author(s):  
Thomas Kander ◽  
Erik Lindblom ◽  
Ulf Schött
Keyword(s):  
Fatty Acids ◽  
Platelet Aggregation ◽  
Healthy Volunteers ◽  
Dose Response ◽  
High Dose ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Positive Health ◽  
Inhibiting Effect

Objective This study aimed to evaluate the dose-response effects of supplemental omega-3 fatty acids on platelet function in healthy volunteers. Methods Twelve healthy volunteers ingested a normal supplemental dose of 1260 mg omega-3 fatty acids daily for 5 days, followed by a high dose of 2520 mg daily for another 5 days. Multiple electrode aggregometry (MEA) with four different agonists was used to measure platelet aggregation before and after the normal- and high-dose regimes. In vitro spiking using physiological doses of omega-3 fatty acids was also performed to determine whether MEA is capable of detecting a platelet-inhibiting effect due to omega-3 fatty acids. Results There were no differences in platelet aggregation measured by the MEA assay in healthy volunteers after intake of either the normal or high dose of omega-3 fatty acids. In the in vitro experiment, a platelet-inhibiting effect of omega-3 fatty acids was shown by an arachidonic acid agonist in MEA . Conclusions Supplemental omega-3 fatty acids do not evoke their positive health effects through inhibition of platelet aggregation measurable with MEA.

scholarly journals The Role of Micronutrients in Support of the Immune Response against Viral Infections

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 3198 ◽  
Author(s):  
Francesco Pecora ◽  
Federica Persico ◽  
Alberto Argentiero ◽  
Cosimo Neglia ◽  
Susanna Esposito
Keyword(s):  
Fatty Acids ◽  
Immune Response ◽  
Immune System ◽  
Viral Infections ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Optimal Function ◽  
The Impact

Viral infections are a leading cause of morbidity and mortality worldwide, and the importance of public health practices including handwashing and vaccinations in reducing their spread is well established. Furthermore, it is well known that proper nutrition can help support optimal immune function, reducing the impact of infections. Several vitamins and trace elements play an important role in supporting the cells of the immune system, thus increasing the resistance to infections. Other nutrients, such as omega-3 fatty acids, help sustain optimal function of the immune system. The main aim of this manuscript is to discuss of the potential role of micronutrients supplementation in supporting immunity, particularly against respiratory virus infections. Literature analysis showed that in vitro and observational studies, and clinical trials, highlight the important role of vitamins A, C, and D, omega-3 fatty acids, and zinc in modulating the immune response. Supplementation with vitamins, omega 3 fatty acids and zinc appears to be a safe and low-cost way to support optimal function of the immune system, with the potential to reduce the risk and consequences of infection, including viral respiratory infections. Supplementation should be in addition to a healthy diet and fall within recommended upper safety limits set by scientific expert bodies. Therefore, implementing an optimal nutrition, with micronutrients and omega-3 fatty acids supplementation, might be a cost-effective, underestimated strategy to help reduce the burden of infectious diseases worldwide, including coronavirus disease 2019 (COVID-19).

scholarly journals Ultralong TE In Vivo 1 H MR Spectroscopy of Omega‐3 Fatty Acids in Subcutaneous Adipose Tissue at 7 T

2018 ◽  
Vol 50 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Martin Gajdošík ◽  
Lukas Hingerl ◽  
Antonín Škoch ◽  
Angelika Freudenthaler ◽  
Patrik Krumpolec ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Mr Spectroscopy ◽  
Subcutaneous Adipose Tissue ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Subcutaneous Adipose
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