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Eicosapentaenoic acid

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https://www.readbyqxmd.com/read/28820493/marine-lipids-on-cardiovascular-diseases-and-other-chronic-diseases-induced-by-diet-an-insight-provided-by-proteomics-and-lipidomics
#1
REVIEW
Lucía Méndez, Gabriel Dasilva, Nùria Taltavull, Marta Romeu, Isabel Medina
Marine lipids, especially ω-3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have largely been linked to prevention of diet-induced diseases. The anti-inflammatory and hypolipidemic properties of EPA and DHA supplementation have been well-described. However, there is still a significant lack of information about their particular mechanism of action. Furthermore, repeated meta-analyses have not shown conclusive results in support of their beneficial health effects...
August 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28818347/use-of-supplemental-long-chain-omega-3-fatty-acids-and-risk-for-cardiac-death-an-updated-meta-analysis-and-review-of-research-gaps
#2
Kevin C Maki, Orsolya M Palacios, Marjorie Bell, Peter P Toth
BACKGROUND: Randomized controlled trials (RCTs) assessing use of long-chain omega-3 polyunsaturated fatty acids (LC-OM3), primarily eicosapentaenoic acid, and/or docosahexaenoic acid have shown mixed results. OBJECTIVE: The objectives of the study were to update and further explore the available RCT data regarding LC-OM3 supplementation and risk for cardiac death and to propose testable hypotheses for the mixed results obtained in RCTs regarding supplemental LC-OM3 use and cardiac risk...
August 2, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28811832/dha-increases-adiponectin-expression-more-effectively-than-epa-at-relative-low-concentrations-by-regulating-ppar%C3%AE-and-its-phosphorylation-at-ser273-in-3t3-l1-adipocytes
#3
Jia Song, Cheng Li, Yushan Lv, Yi Zhang, William Kwame Amakye, Limei Mao
BACKGROUND: Enhancing circulating adiponectin is considered as a potential approach for the prevention and treatment of non-communicable diseases (NCDs). Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) were reported to increase adiponectin by previous studies using a mixture of them. However, their individual effects on adiponectin and the underlying mechanisms are still unclear. In the present study, we observed and compared the individual effect of DHA and EPA on adiponectin in 3T3-L1 adipocytes, and further tested whether DHA or EPA regulated adiponectin by peroxisome proliferator-activated receptor γ (PPARγ) and its phosphorylation at Ser273 to provide a plausible explanation for their distinct actions...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28807874/docosahexaenoic-acid-increases-the-expression-of-oxidative-stress-induced-growth-inhibitor-1-through-the-pi3k-akt-nrf2-signaling-pathway-in-breast-cancer-cells
#4
Chia-Han Tsai, You-Cheng Shen, Haw-Wen Chen, Kai-Li Liu, Jer-Wei Chang, Pei-Yin Chen, Chen-Yu Lin, Hsien-Tsung Yao, Chien-Chun Li
Oxidative stress-induced growth inhibitor 1 (OSGIN1), a tumor suppressor, inhibits cell proliferation and induces cell death. N-6 and n-3 PUFAs protect against breast cancer, but the molecular mechanisms of this effect are not clear. We investigated the effect of n-6 and n-3 PUFAs on OSGIN1 expression and whether OSGIN1 is involved in PUFA-induced apoptosis in breast cancer cells. We used 100 μM of n-6 PUFAs including arachidonic acid, linoleic acid, and gamma-linolenic acid and n-3 PUFAs including alpha-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid (DHA)...
August 11, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28806965/decreased-circulating-dihomo-gamma-linolenic-acid-levels-are-associated-with-total-mortality-in-patients-with-acute-cardiovascular-disease-and-acute-decompensated-heart-failure
#5
Shohei Ouchi, Tetsuro Miyazaki, Kazunori Shimada, Yurina Sugita, Megumi Shimizu, Azusa Murata, Takao Kato, Tatsuro Aikawa, Shoko Suda, Tomoyuki Shiozawa, Masaru Hiki, Shuhei Takahashi, Takatoshi Kasai, Katsumi Miyauchi, Hiroyuki Daida
BACKGROUND: Polyunsaturated fatty acids (PUFAs) have important roles in the pathogenesis of cardiovascular diseases. However, the clinical significance of omega-6 PUFAs in acute cardiovascular disease remains unknown. METHODS: We enrolled 417 consecutive patients with acute cardiovascular disease admitted to the cardiac intensive care unit at Juntendo University Hospital between April 2012 and October 2013. We investigated the association between serum PUFA levels and long-term mortality...
August 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28804463/effect-of-oral-docosahexaenoic-acid-dha-supplementation-on-dha-levels-and-omega-3-index-in-red-blood-cell-membranes-of-breast-cancer-patients
#6
Alessio Molfino, Maria I Amabile, Sara Mazzucco, Gianni Biolo, Alessio Farcomeni, Cesarina Ramaccini, Simonetta Antonaroli, Massimo Monti, Maurizio Muscaritoli
Rationale: Docosahexaenoic acid (DHA) in cell membrane may influence breast cancer (BC) patients' prognosis, affecting tumor cells sensitivity to chemo- and radio-therapy and likely modulating inflammation. The possibility of identifying BC patients presenting with low DHA levels and/or low ability of DHA incorporation into cell membrane might help to treat this condition. Methods: We enrolled BC patients and healthy controls, recording their seafood dietary intake. DHA in form of algal oil was administered for 10 consecutive days (2 g/day)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28802572/effect-of-cadmium-on-uptake-of-iron-zinc-and-copper-and-mrna-expression-of-metallothioneins-in-hepg2-cells-in-vitro
#7
Sabine Sampels, Hana Kocour Kroupova, Pavla Linhartova
The intake of cadmium contaminated fish was mimicked by incubating human hepatoblastoma cells (Cell line HepG2) with a combination of different levels of cadmium (0-5μM) plus the n-3 fatty acids docosahexaenoic acid and eicosapentaenoic acid, which are typical for fish. Uptake of cadmium, iron, copper and zinc was measured by ICP-MS. In addition mRNA expression of two metallothioneins (mt1 g and mt1 m) was evaluated by real-time PCR. The obtained data shows that the presence of cadmium increases the uptake of iron and zinc into the HepG2 cells while the uptake of copper remains unaffected...
August 10, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28802571/omega-3-polyunsaturated-fatty-acids-improve-endothelial-function-in-humans-at-risk-for-atherosclerosis-a-review
#8
REVIEW
Kayla R Zehr, Mary K Walker
Epidemiology studies and clinical trials show that omega-3 polyunsaturated fatty acids (n-3 PUFAs) can prevent atherosclerotic morbidity and evidence suggests this may be mediated by improving endothelial dysfunction. Endothelial dysfunction is characterized by reduced vasodilation and a pro-inflammatory, pro-thrombotic state, and is an early pathological event in the development of atherosclerosis. Flow-mediated dilation (FMD), a gold standard for assessing endothelial dysfunction, is a predictor of future cardiovascular events and coronary heart disease risk...
August 9, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28800645/analysis-of-endogenous-lipids-during-intestinal-wound-healing
#9
Yunna Lee, Jieun Choo, Su Jin Kim, Gwangbeom Heo, Charalabos Pothoulakis, Yong-Hak Kim, Eunok Im
Intestinal wound healing is a new therapeutic goal for inflammatory bowel disease (IBD) as complete healing of the mucosa is the key element of clinical remission in IBD. Previous studies showed that termination of inflammation can be achieved by adding pro-resolving lipids like DHA and EPA exogenously. However, the roles of these lipids in mucosal healing have not been investigated. To recapitulate intestinal healing process, mice were received dextran sodium sulfate (DSS) for 7 days in the drinking water followed by regular tap water for 5 additional days...
2017: PloS One
https://www.readbyqxmd.com/read/28798154/a-novel-synthetic-analogue-of-%C3%AF-3-17-18-epoxy-eicosatetraenoic-acid-activates-tnf-receptor-1-ask1-jnk-signaling-to-promote-apoptosis-in-human-breast-cancer-cells
#10
Herryawan Ryadi Eziwar Dyari, Tristan Rawling, Yongjuan Chen, William Sudarmana, Kirsi Bourget, Julie M Dwyer, Sarah E Allison, Michael Murray
A saturated analog of the cytochrome P450-mediated ω-3-17,18-epoxide of ω-3-eicosapentaenoic acid (C20E) activated apoptosis in human triple-negative MDA-MB-231 breast cancer cells. This study evaluated the apoptotic mechanism of C20E. Increased cytosolic cytochrome c expression and altered expression of pro- and antiapoptotic B-cell lymphoma-2 proteins indicated activation of the mitochondrial pathway. Caspase-3 activation by C20E was prevented by pharmacological inhibition and silencing of the JNK and p38 MAP kinases (MAPK), upstream MAPK kinases MKK4 and MKK7, and the upstream MAPK kinase kinase apoptosis signal-regulating kinase 1 (ASK1)...
August 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28797250/omega-3-fatty-acids-eicosapentaenoic-acid-and-docosahexaenoic-acid-and-their-mechanisms-of-action-on-apolipoprotein-b-containing-lipoproteins-in-humans-a-review
#11
REVIEW
Jan Oscarsson, Eva Hurt-Camejo
BACKGROUND: Epidemiological and genetic studies suggest that elevated triglyceride (TG)-rich lipoprotein levels in the circulation increase the risk of cardiovascular disease. Prescription formulations of omega-3 fatty acids (OM3FAs), mainly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), reduce plasma TG levels and are approved for the treatment of patients with severe hypertriglyceridemia. Many preclinical studies have investigated the TG-lowering mechanisms of action of OM3FAs, but less is known from clinical studies...
August 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28796175/suppression-of-wnt-signaling-and-osteogenic-changes-in-vascular-smooth-muscle-cells-by-eicosapentaenoic-acid
#12
Yukihiro Saito, Kazufumi Nakamura, Daiji Miura, Kei Yunoki, Toru Miyoshi, Masashi Yoshida, Norifumi Kawakita, Tomonari Kimura, Megumi Kondo, Toshihiro Sarashina, Satoshi Akagi, Atsuyuki Watanabe, Nobuhiro Nishii, Hiroshi Morita, Hiroshi Ito
Vascular medial calcification is often observed in patients with arteriosclerosis. It is also associated with systolic hypertension, wide pulse pressure, and fluctuation of blood pressure, which results in cardiovascular events. Eicosapentaenoic acid (EPA) has been shown to suppress vascular calcification in previous animal experiments. We investigated the inhibitory effects of EPA on Wnt signaling, which is one of the important signaling pathways involved in vascular calcification. Intake of food containing 5% EPA resulted in upregulation of the mRNA expression of Klotho, an intrinsic inhibitor of Wnt signaling, in the kidneys of wild-type mice...
August 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28790921/fatty-acid-profile-of-neutral-and-polar-lipid-fraction-of-wild-eggs-and-hatchlings-from-wild-and-captive-reared-broodstock-of-octopus-vulgaris
#13
Juan Estefanell, Antonio Mesa-Rodríguez, Besay Ramírez, Antonio La Barbera, Juan Socorro, Carmen María Hernandez-Cruz, María Soledad Izquierdo
The culture of Octopus vulgaris is constrained by unsolved problems in paralarvae rearing, mainly associated to the unknown nutritional requirements of this species in early stages. In this article we studied the fatty acid profile (total, neutral, and polar lipid fractions) in wild eggs and wild hatchlings, collected in Gran Canaria (SW) (Spain) with artificial dens, in comparison to hatchlings obtained in captivity from broodstock fed on trash fish species. Total lipids were 11.5-13.5% dw, with the polar fraction representing a 70...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28783061/impact-of-biological-feedback-and-incentives-on-blood-fatty-acid-concentrations-including-omega-3-index-in-an-employer-based-wellness-program
#14
Michael I McBurney, Julia K Bird
Eicosapentaenoic acid (EPA, C20:5n-3) and docosahexaenoic acid (DHA, C22:6n-3) are important fatty acids for the retina and brain. More than 95% of Americans have suboptimal EPA + DHA blood concentrations. This cross-sectional employer-based study assessed whole blood fatty acid levels of volunteers participating in an onsite wellness biometric screening program and was designed to determine if an incentive, a $5 coupon for a 90-day supply of fish oil supplement typically costing $18-30, stimulated incremental dietary behavior change relative to nutritional status assessment alone to increase EPA + DHA concentrations...
August 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28782808/lipid-composition-of-membrane-microdomains-isolated-detergent-free-from-pufa-supplemented-raw264-7-macrophages
#15
Christine Hellwing, Feven Tigistu-Sahle, Herbert Fuhrmann, Reijo Käkelä, Julia Schumann
Profound alterations in the lipid profile of raft and non-raft plasma membrane microdomains were found when RAW264.7 macrophages were supplemented with polyunsaturated fatty acids (PUFAs) in physiologically relevant concentrations. For the first time lipids in the detergent-free isolated membrane domains of phagocytic immune cells were characterized by mass spectrometry. The extent of remodeling of the membrane lipids differed with different n3 and n6 PUFA supplements. The mildest effects were detected for -linolenic acid (LNA) and linoleic acid (LA), the C18 precursors of the n3 and n6 families, respectively...
August 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28781788/inhibition-of-pc3-human-prostate-cancer-cell-proliferation-invasion-and-migration-by-eicosapentaenoic-acid-and-docosahexaenoic-acid
#16
Keiichi Oono, Katsuya Takahashi, Saeka Sukehara, Hirohito Kurosawa, Tomio Matsumura, Shun'Ichiro Taniguchi, Shoichiro Ohta
The n-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), found in fish oil, exert a number of beneficial effects, and they are used in the treatment of hyperlipidemia. In recent years, EPA and DHA have been found to affect cancer cell proliferation. In the present study, PC3 cells, which are androgen-independent prostate cancer cells that resemble castration-resistant prostate cancer cells, were used to investigate a possible novel treatment for castration-resistant prostate cancer. The PC3 cells were cultured and incubated with various concentrations of EPA or DHA...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28774820/identification-of-cyp443d1-cyp74-clan-of-nematostella-vectensis-as-a-first-cnidarian-epoxyalcohol-synthase-and-insights-into-its-catalytic-mechanism
#17
Yana Y Toporkova, Svetlana S Gorina, Fakhima K Mukhitova, Mats Hamberg, Tatyana M Ilyina, Lucia S Mukhtarova, Alexander N Grechkin
The CYP74 clan enzymes are responsible for the biosynthesis of numerous bioactive oxylipins in higher plants, some Proteobacteria, brown and green algae, and Metazoa. A novel putative CYP74 clan gene CYP443D1 of the starlet sea anemone (Nematostella vectensis, Cnidaria) has been cloned, and the properties of the corresponding recombinant protein have been studied in the present work. The recombinant CYP443D1 was incubated with the 9- and 13-hydroperoxides of linoleic and α-linolenic acids (9-HPOD, 13-HPOD, 9-HPOT, and 13-HPOT, respectively), as well as with the 9-hydroperoxide of γ-linolenic acid (γ-9-HPOT) and 15-hydroperoxide of eicosapentaenoic acid (15-HPEPE)...
August 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28771713/epa-blocks-tnf-%C3%AE-induced-inhibition-of-sugar-uptake-in-caco-2-cells-via-gpr120-and-ampk
#18
Rosa Castilla-Madrigal, Jaione Barrenetxe, María J Moreno-Aliaga, María Pilar Lostao
The aim of the present work was to investigate in Caco-2 cells whether eicosapentaenoic acid (EPA), an omega-3 polyunsaturated fatty acid, could block the inhibitory effect of tumor necrosis factor-α (TNF-α) on sugar transport, and identify the intracellular signaling pathways involved. After pre-incubation of the Caco-2 cells with TNF-α and EPA for 1 h, EPA prevented the inhibitory effect of the cytokine on α-methyl-D-glucose (αMG) uptake (15 min) and on SGLT1 expression at the brush border membrane, measured by Western blot...
August 3, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28771708/metabolic-profiling-of-murine-plasma-reveals-eicosapentaenoic-acid-metabolites-protecting-against-endothelial-activation-and-atherosclerosis
#19
Yajin Liu, Xuan Fang, Xu Zhang, Jing Huang, Jinlong He, Liyuan Peng, Chenji Ye, Yingmei Wang, Fengxia Xue, Ding Ai, Dan Li, Yi Zhu
BACKGROUND AND PURPOSE: Atherosclerosis results from a maladaptive inflammatory response initiated by the intramural retention of LDL in susceptible areas of the arterial vasculature. ω-3 polyunsaturated fatty acids (ω-3) have protective effects in atherosclerosis; however, the molecular mechanism is still largely unknown. The present study used a metabolomic approach to reveal the atheroprotective metabolites of ω-3 and investigate the underlying mechanisms. EXPERIMENTAL APPROACH: We evaluated the development of atherosclerosis in LDL-receptor-deficient mice (LDLR(-/-) ) fed a Western-type diet (WTD) plus ω-3 and also LDLR(-/-) and fat-1 transgenic (LDLR(-/-) -fat-1(tg) ) mice fed a WTD...
August 3, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28771600/eicosapentaenoic-acid-prevents-arterial-calcification-in-klotho-mutant-mice
#20
Kazufumi Nakamura, Daiji Miura, Yukihiro Saito, Kei Yunoki, Yasushi Koyama, Minoru Satoh, Megumi Kondo, Kazuhiro Osawa, Omer F Hatipoglu, Toru Miyoshi, Masashi Yoshida, Hiroshi Morita, Hiroshi Ito
BACKGROUND: The klotho gene was identified as an "aging-suppressor" gene that accelerates arterial calcification when disrupted. Serum and vascular klotho levels are reduced in patients with chronic kidney disease, and the reduced levels are associated with arterial calcification. Intake of eicosapentaenoic acid (EPA), an n-3 fatty acid, reduces the risk of fatal coronary artery disease. However, the effects of EPA on arterial calcification have not been fully elucidated. The aim of this study was to determine the effect of EPA on arterial calcification in klotho mutant mice...
2017: PloS One
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