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https://www.readbyqxmd.com/read/29207281/dark-chilling-and-subsequent-photo-activation-modulate-expression-and-induce-reversible-association-of-chloroplast-lipoxygenase-with-thylakoid-membrane-in-runner-bean-phaseolus-coccineus-l
#1
Radosław Mazur, Joanna Trzcinska-Danielewicz, Piotr Kozlowski, Łucja Kowalewska, Izabela Rumak, Brian J Shiell, Agnieszka Mostowska, Wojtek P Michalski, Maciej Garstka
Lipoxygenases (LOXs) are non-haem iron-containing dioxygenases that catalyse oxygenation of polyunsaturated fatty acids. This reaction is the first step in biosynthesis of oxylipins, which play important and diverse roles in stress response. In this study, we identified four LOX genes (PcLOXA, B, C, D) in chilling-sensitive runner bean (Phaseolus coccineus L.) plant and analyzed their expression patterns during long term dark-chilling (4 °C) stress and during day/night (21ºC/4 °C) temperature fluctuations...
November 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29195136/oxidized-ldl-triggers-changes-in-oxidative-stress-and-inflammatory-biomarkers-in-human-macrophages
#2
Oscar J Lara-Guzmán, Ángel Gil-Izquierdo, Sonia Medina, Edison Osorio, Rafael Álvarez-Quintero, Natalia Zuluaga, Camille Oger, Jean-Marie Galano, Thierry Durand, Katalina Muñoz-Durango
Oxidized low-density lipoprotein (oxLDL) is a well-recognized proatherogenic particle that functions in atherosclerosis. In this study, we established conditions to generate human oxLDL, characterized according to the grade of lipid and protein oxidation, particle size and oxylipin content. The induction effect of the cellular proatherogenic response was assessed in foam cells by using an oxLDL-macrophage interaction model. Uptake of oxLDL, reactive oxygen species production and expression of oxLDL receptors (CD36, SR-A and LOX-1) were significantly increased in THP-1 macrophages...
November 22, 2017: Redox Biology
https://www.readbyqxmd.com/read/29194658/mycorrhizal-tomato-plants-fine-tunes-the-growth-defence-balance-upon-n-depleted-root-environments
#3
P Sánchez-Bel, N Sanmartín, V Pastor, D Mateu, M Cerezo, A Vidal-Albalat, J Pastor-Fernández, M J Pozo, V Flors
In low nutritive environments, the uptake of N by Arbuscular Mycorrhizal Fungi may confer competitive advantages for the host. The present study aims to understand how mycorrhizal tomato plants perceive and then prepare for a N depletion in the root environment. Plants colonized by Rhizophagus irregularis displayed improved responses to a lack of N than non-mycorrhizal plants. These responses were accomplished by a complex metabolic and transcriptional rearrangement that mostly affected the gibberellic acid and jasmonic acid pathways involvingDELLA and JAZ1 genes, which were responsive to changes in the C/N imbalance of the plant...
November 30, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29188048/effects-of-cooking-techniques-on-fatty-acid-and-oxylipin-content-of-farmed-rainbow-trout-oncorhynchus-mykiss
#4
Katrina Flaskerud, Michael Bukowski, Mikhail Golovko, LuAnn Johnson, Stephen Brose, Ashrifa Ali, Beth Cleveland, Matthew Picklo, Susan Raatz
The aim of this study was to investigate the effect of various cooking techniques on the fatty acid and oxylipin content of farmed rainbow trout. Rainbow trout is an excellent source of long-chain omega-3 (n-3) polyunsaturated fatty acids (PUFA) which have beneficial health effects. Fillets of 2-year-old farmed rainbow trout were baked, broiled, microwaved, or pan-fried in corn (CO), canola (CaO), peanut (PO), or high oleic sunflower oil (HOSO). Fatty acids and oxidized lipids were extracted from these samples and their respective raw fillet samples...
November 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/29166128/the-oxylipin-pathways-biochemistry-and-function
#5
Claus Wasternack, Ivo Feussner
Plant oxylipins form a constantly growing group of signaling molecules that comprise oxygenated fatty acids and metabolites derived therefrom. In the last decade, the understanding of biosynthesis, metabolism, and action of oxylipins, especially jasmonates, has dramatically improved. Additional mechanistic insights into the action of enzymes and insights into signaling pathways have been deepened for jasmonates. For other oxylipins, such as the hydroxy fatty acids, individual signaling properties and cross talk between different oxylipins or even with additional phytohormones have recently been described...
November 20, 2017: Annual Review of Plant Biology
https://www.readbyqxmd.com/read/29129670/microalgae-derived-oxylipins-decrease-inflammatory-mediators-by-regulating-the-subcellular-location-of-nf%C3%AE%C2%BAb-and-ppar-%C3%AE
#6
Javier Ávila-Román, Elena Talero, Carolina de Los Reyes, Sofía García-Mauriño, Virginia Motilva
Oxylipins (OXLs) are bioactive molecules generated by the oxidation of fatty acids that promote the resolution of acute inflammation and prevent chronic inflammatory processes through molecular mechanisms that are not well known. We have previously reported the anti-inflammatory activity of microalgae-derived OXLs and OXL-containing biomass in two inflammatory bowel disease (IBD) models: 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced acute colitis and TNBS-induced recurrent colitis. In this study, we examined the in vitro anti-inflammatory mechanism of action of the most abundant OXLs isolated from Chlamydomonas debaryana (13S-HOTE and 13S-HODE) and Nannochloropsis gaditana (15S-HEPE)...
November 9, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29117227/kojic-acid-mediated-damage-responses-induce-mycelial-regeneration-in-the-basidiomycete-hypsizygus-marmoreus
#7
Jinjing Zhang, Hui Chen, Mingjie Chen, Hong Wang, Qian Wang, Xiaoxia Song, Haibo Hao, Zhiyong Feng
Mechanical damage can induce fruiting body production in fungi. In this study, the antioxidant kojic acid (KA) was found to enhance injured mycelial regeneration and increase fruiting body production in Hypsizygus marmoreus. KA reduced the level of reactive oxygen species (ROS), which are harmful to mycelia when excessively generated by mechanical damage. Moreover, KA increased catalase and superoxide dismutase activities and glutathione and ascorbic acid contents by up-regulating antioxidant gene expression...
2017: PloS One
https://www.readbyqxmd.com/read/29089614/obesity-induced-changes-in-lipid-mediators-persist-after-weight-loss
#8
A Hernandez-Carretero, N Weber, M R La Frano, W Ying, J L Rodriguez, D D Sears, V Wallenius, E Börgeson, J W Newman, O Osborn
BACKGROUND: Obesity induces significant changes in lipid mediators, however, the extent to which these changes persist after weight loss has not been investigated. SUBJECTS/METHODS: We fed C57BL6 mice a high fat diet to generate obesity and then switched the diet to a lower fat diet to induce weight loss. We performed a comprehensive metabolic profiling of lipid mediators including oxylipins, endocannabinoids, sphingosines and ceramides in key metabolic tissues including adipose, liver, muscle, hypothalamus and plasma...
November 1, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29075283/molecular-basis-of-resistance-to-fusarium-ear-rot-in-maize
#9
REVIEW
Alessandra Lanubile, Valentina Maschietto, Virginia M Borrelli, Lorenzo Stagnati, Antonio F Logrieco, Adriano Marocco
The impact of climate change has been identified as an emerging issue for food security and safety, and the increased incidence of mycotoxin contamination in maize over the last two decades is considered a potential emerging hazard. Disease control by chemical and agronomic approaches is often ineffective and increases the cost of production; for this reason the exploitation of genetic resistance is the most sustainable method for reducing contamination. The review focuses on the significant advances that have been made in the development of transcriptomic, genetic and genomic information for maize, Fusarium verticillioides molds, and their interactions, over recent years...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28981289/using-curvature-power-to-map-the-domain-of-inverse-micellar-cubic-phases-the-case-of-aliphatic-aldehydes-in-1-2-dioleoyl-sn-glycero-3-phosphoethanolamine
#10
Jamie Burrell, Marcus K Dymond, Richard James Gillams, Duncan J Parker, G John Langley, Ana Maria Labrador, Tommy Nylander, George S Attard
Oxylipins, or fatty aldehydes, are a class of molecules produced from membrane lipids as a result of oxidative stress or enzyme-mediated peroxidation. Here we report the effects of two biologically important fatty aldehydes, trans, trans-2,4-decanedienal (DD) and cis-11-hexadecenal (HD), on the phase behaviour of the lipid 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) in water. We compare the phase behaviour of DD/DOPE and HD/DOPE mixtures to the phase behaviour of oleic acid/ DOPE mixtures and show that DD, HD and oleic acid have similar effects on the phase diagrams of DOPE...
October 5, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28970503/omega-6-and-omega-3-oxylipins-are-implicated-in-soybean-oil-induced-obesity-in-mice
#11
Poonamjot Deol, Johannes Fahrmann, Jun Yang, Jane R Evans, Antonia Rizo, Dmitry Grapov, Michelle Salemi, Kwanjeera Wanichthanarak, Oliver Fiehn, Brett Phinney, Bruce D Hammock, Frances M Sladek
Soybean oil consumption is increasing worldwide and parallels a rise in obesity. Rich in unsaturated fats, especially linoleic acid, soybean oil is assumed to be healthy, and yet it induces obesity, diabetes, insulin resistance, and fatty liver in mice. Here, we show that the genetically modified soybean oil Plenish, which came on the U.S. market in 2014 and is low in linoleic acid, induces less obesity than conventional soybean oil in C57BL/6 male mice. Proteomic analysis of the liver reveals global differences in hepatic proteins when comparing diets rich in the two soybean oils, coconut oil, and a low-fat diet...
October 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28956853/lipidomics-unravels-the-role-of-leaf-lipids-in-thyme-plant-response-to-drought-stress
#12
Parviz Moradi, Atiyeh Mahdavi, Maryam Khoshkam, Marcello Iriti
Thymus is one of the best known genera within the Labiatae (Lamiaceae) family, with more than 200 species and many medicinal and culinary uses. The effects of prolonged drought on lipid profile were investigated in tolerant and sensitive thyme plants (Thymus serpyllum L. and Thymus vulgaris L., respectively). Non-targeted non-polar metabolite profiling was carried out using Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry with one-month-old plants exposed to drought stress, and their morpho-physiological parameters were also evaluated...
September 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28956582/effect-of-the-dietary-intake-of-melatonin-and-hydroxytyrosol-rich-wines-by-healthy-female-volunteers-on-the-systemic-lipidomic-related-oxylipins
#13
Javier Marhuenda, Sonia Medina, Pedro Martínez-Hernández, Simon Arina, Pilar Zafrilla, Juana Mulero, Camille Oger, Jean-Marie Galano, Thierry Durand, Antonio Solana, Federico Ferreres, Juan José López-García, Angel Gil-Izquierdo
Oxylipins are lipid mediators involved in the physiopathology of all organs. Moreover, isoprostanes have been established as general and reliable in vivo oxidative stress biomarkers. Red wine has proved to exert several benefits through the maintenance of the oxidative balance of the organism. Antiradical scavenging capacity has been mainly attributed to polyphenols. However, melatonin and hydroxytyrosol should be taken into account as potent antiradical agents. The present research aimed to clarify the situation of enzymatic and oxidative injury and eicosanoid urinary excretion related to the intake of three kinds of red wines and their primary musts...
September 28, 2017: Food & Function
https://www.readbyqxmd.com/read/28890385/reduced-coronary-reactive-hyperemia-in-mice-was-reversed-by-the-soluble-epoxide-hydrolase-inhibitor-t-aucb-role-of-adenosine-a2a-receptor-and-plasma-oxylipins
#14
Ahmad Hanif, Matthew L Edin, Darryl C Zeldin, Christophe Morisseau, John R Falck, Catherine Ledent, Stephen L Tilley, Mohammed A Nayeem
Coronary reactive hyperemia (CRH) protects the heart against ischemia. Adenosine A2AAR-deficient (A2AAR(-/-)) mice have increased expression of soluble epoxide hydrolase (sEH); the enzyme responsible for breaking down the cardioprotective epoxyeicosatrienoic acids (EETs) to dihydroxyeicosatrienoic acids (DHETs). sEH-inhibition enhances CRH, increases EETs, and modulates oxylipin profiles. We investigated the changes of oxylipins and their impact on CRH in A2AAR(-/-) and wild type (WT) mice. We hypothesized that the attenuated CRH in A2AAR(-/-) mice is mediated by changes in oxylipin profiles, and that it can be reversed by either sEH- or ω-hydroxylases-inhibition...
July 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28889752/covalent-immobilization-of-oxylipin-biosynthetic-enzymes-on-nanoporous-rice-husk-silica-for-production-of-cis-12-oxophytodienoic-acid
#15
Thu Bao Le, Chong Soo Han, Kyoungwon Cho, Oksoo Han
Soybean lipoxygenase, recombinant rice allene oxide synthase-1 and rice allene oxide cyclase were covalently immobilized on nanoporous rice husk silica using two types of linkers: glutardialdehyde and polyethylene glycol. The immobilization efficiency achieved using glutardialdehyde-linked rice husk silica was higher than that achieved using polyethylene glycol-linked rice husk silica (50-92% and 25-50%, respectively). Immobilization on both types of matrices significantly decreased the specific activities of the immobilized enzymes...
September 11, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28886714/the-oxylipin-and-endocannabidome-responses-in-acute-phase-plasmodium-falciparum-malaria-in-children
#16
Izabella Surowiec, Sandra Gouveia-Figueira, Judy Orikiiriza, Elisabeth Lindquist, Mari Bonde, Jimmy Magambo, Charles Muhinda, Sven Bergström, Johan Normark, Johan Trygg
BACKGROUND: Oxylipins and endocannabinoids are low molecular weight bioactive lipids that are crucial for initiation and resolution of inflammation during microbial infections. Metabolic complications in malaria are recognized contributors to severe and fatal malaria, but the impact of malaria infection on the production of small lipid derived signalling molecules is unknown. Knowledge of immunoregulatory patterns of these molecules in malaria is of great value for better understanding of the disease and improvement of treatment regimes, since the action of these classes of molecules is directly connected to the inflammatory response of the organism...
September 8, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28886129/modulation-of-the-endogenous-omega-3-fatty-acid-and-oxylipin-profile-in-vivo-a-comparison-of-the-fat-1-transgenic-mouse-with-c57bl-6-wildtype-mice-on-an-omega-3-fatty-acid-enriched-diet
#17
Annika I Ostermann, Patrick Waindok, Moritz J Schmidt, Cheng-Ying Chiu, Christopher Smyl, Nadine Rohwer, Karsten-H Weylandt, Nils Helge Schebb
Dietary intervention and genetic fat-1 mice are two models for the investigation of effects associated with omega-3 polyunsaturated fatty acids (n3-PUFA). In order to assess their power to modulate the fatty acid and oxylipin pattern, we thoroughly compared fat-1 and wild-type C57BL/6 mice on a sunflower oil diet with wild-type mice on the same diet enriched with 1% EPA and 1% DHA for 0, 7, 14, 30 and 45 days. Feeding led after 14-30 days to a high steady state of n3-PUFA in all tissues at the expense of n6-PUFAs...
2017: PloS One
https://www.readbyqxmd.com/read/28863368/postprandial-effect-to-decrease-soluble-epoxide-hydrolase-activity-roles-of-insulin-and-gut-microbiota
#18
Jun Yang, Young Taek Oh, Debin Wan, Richard M Watanabe, Bruce D Hammock, Jang H Youn
Epoxides of free fatty acids (FFAs), especially epoxyeicosatrienoic acids (EETs), are lipid mediators with beneficial effects in metabolic and cardiovascular (CV) health. FFA epoxides are quickly metabolized to biologically less active diols by soluble epoxide hydrolase (sEH). Inhibition of sEH, which increases EET levels, improves glucose homeostasis and CV health and is proposed as an effective strategy for the treatment of diabetes and CV diseases. Here, we show evidence that sEH activity is profoundly reduced in postprandial states in rats; plasma levels of 17 sEH products (i...
November 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28839213/metabolomic-compounds-identified-in-piriformospora-indica-colonized-chinese-cabbage-roots-delineate-symbiotic-functions-of-the-interaction
#19
Mo Da-Sang Hua, Rajendran Senthil Kumar, Lie-Fen Shyur, Yuan-Bin Cheng, Zhihong Tian, Ralf Oelmüller, Kai-Wun Yeh
Root colonization by endophytic fungus Piriformospora indica facilitating growth/development and stress tolerance has been demonstrated in various host plants. However, global metabolomic studies are rare. By using high-throughput gas-chromatography-based mass spectrometry, 549 metabolites of 1,126 total compounds observed were identified in colonized and uncolonized Chinese cabbage roots, and hyphae of P. indica. The analyses demonstrate that the host metabolomic compounds and metabolite pathways are globally reprogrammed after symbiosis with P...
August 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28838555/distinct-effects-of-dietary-flax-compared-to-fish-oil-soy-protein-compared-to-casein-and-sex-on-the-renal-oxylipin-profile-in-models-of-polycystic-kidney-disease
#20
Jessay G Devassy, Tamio Yamaguchi, Md Monirujjaman, Melissa Gabbs, Amir Ravandi, Jing Zhou, Harold M Aukema
Oxylipins are bioactive lipids derived from polyunsaturated fatty acids (PUFA) that are important regulators of kidney function and health. Targeted lipidomic analyses of renal oxylipins from four studies of rodent models of renal disease were performed to investigate the differential effects of dietary flax compared to fish oil, soy protein compared to casein, and sex. Across all studies, dietary fish oil was more effective than flax oil in reducing n-6 PUFA derived oxylipins and elevating eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) derived oxylipins, whereas dietary flax oil resulted in higher α-linolenic acid (ALA) oxylipins...
August 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
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