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poly-unsaturated fatty acids

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https://www.readbyqxmd.com/read/29776593/heat-shock-influences-the-fatty-acid-composition-of-the-muscle-of-the-antarctic-fish-trematomus-bernacchii
#1
C Truzzi, S Illuminati, M Antonucci, G Scarponi, A Annibaldi
In the Ross Sea region (average temperature of -1.87 °C), shelf water warming up to +0.8-+1.4 °C is predicted by 2200, so there is an urgent need to understand how organisms can respond to rising temperatures. In this study, we analyzed the effect of a heat shock on the fatty acid (FAs) composition of muscle of the Antarctic teleost Trematomus bernacchii, caught in Terra Nova Bay (Ross Sea), and held in fish tanks at 0, +1 or +2 °C, for 1, 5 and 10 days. In general, heat shock produced, beyond a reduction in total lipid content correlated to the temperature, an increase in the percentage of saturated FAs, and a decrease in mono-unsaturated FAs; however, the level of poly-unsaturated FAs did not seem to directly correlate with temperature...
April 3, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29736624/leaf-lipidome-and-transcriptome-profiling-of-portulaca-oleracea-characterization-of-lysophosphatidylcholine-acyltransferase
#2
Varadarajan Venkateshwari, Anitha Vijayakumar, Arun Kumar Vijayakumar, L Prasanna Anjaneya Reddy, Malathi Srinivasan, Ram Rajasekharan
Portulaca leaves serve as an alternative bioresource for edible PUFAs. Transcriptome data provide information to explore Portulaca as a model system for galactolipids, leaf lipid metabolism, and PUFA-rich designer lipids. Poly-unsaturated fatty acids (PUFAs) are gaining importance due to their innumerable health benefits, and hence, understanding their biosynthesis in plants has attained prominence in recent years. The most common source of PUFAs is of marine origin. Although reports have identified Portulaca oleracea (purslane) as a leaf source of omega-3 fatty acids in the form of alpha-linolenic acid (ALA), the mechanism of ALA accumulation and its distribution into various lipids has not been elucidated...
May 7, 2018: Planta
https://www.readbyqxmd.com/read/29670845/chemical-rheological-and-nutritional-characteristics-of-sesame-and-olive-oils-blended-with-linseed-oil
#3
Fataneh Hashempour-Baltork, Mohammadali Torbati, Sodeif Azadmard-Damirchi, Geoffrey Peter Savage
Purpose: Nutritional quality and oxidation stability are two main factors in the evaluation of edible oils. Oils in their pure form do not have an ideal fatty acid composition or suitable oxidative stability during processing or storage. Methods: This study was designed to evaluate the chemical, nutritional and rheological properties of oil mixtures in three ratios of olive: sesame: linseed, 65:30:5; 60:30:10 and 55:30:15. Acidity value, peroxide value, rancimat test, fatty acid profile, nutritional indexes and rheological properties of the oil blends were determined...
March 2018: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29644551/lipase-catalyzed-epoxidation-of-fatty-acid-methyl-esters-derived-from-unsaturated-vegetable-oils-in-absence-of-carboxylic-acid
#4
Alejandro Sustaita-Rodríguez, Víctor H Ramos-Sánchez, Alejandro A Camacho-Dávila, Gerardo Zaragoza-Galán, José C Espinoza-Hicks, David Chávez-Flores
Nowadays the industrial chemistry reactions rely on green technologies. Enzymes as lipases are increasing its use in diverse chemical processes. Epoxidized fatty acid methyl esters obtained from transesterification of vegetable oils have recently found applications as polymer plasticizer, agrochemical, cosmetics, pharmaceuticals and food additives. In this research article, grapeseed, avocado and olive oils naturally containing high percents of mono and poly unsaturations were used as starting materials for the production of unsaturated fatty acid methyl esters...
April 11, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29623357/membrane-microdomains-regulate-nlrp10-and-nlrp12-dependent-signalling-in-a549-cells-challenged-with-cigarette-smoke-extract
#5
Dhirendra P Singh, Gagandeep Kaur, Prathyusha Bagam, Rakeysha Pinkston, Sanjay Batra
Chronic obstructive pulmonary disease (COPD) is predicted to become the third leading cause of death and disability worldwide by 2030; with cigarette smoking (active or passive) being one of the chief cause of its occurrence. Cigarette smoke exposure has been found to result in excessive inflammation and tissue injury, which might lead to COPD, although the exact pathophysiology of the disease remains elusive. While previous studies have demonstrated the role of membrane-bound Toll-like receptors (TLRs) in cigarette smoke (CS)-induced inflammation, scant information is available about the role of cytosolic NOD-like receptors (NLRs) in regulating CS-mediated inflammatory responses...
April 6, 2018: Archives of Toxicology
https://www.readbyqxmd.com/read/29571481/fatty-acidomics-evaluation-of-the-effects-of-thermal-treatments-on-commercial-mussels-through-an-extended-characterization-of-their-free-fatty-acids-by-liquid-chromatography-fourier-transform-mass-spectrometry
#6
Ilario Losito, Laura Facchini, Alessandra Valentini, Tommaso R I Cataldi, Francesco Palmisano
An unprecedented characterization of free fatty acids (FFA) in the lipid extracts of fresh or thermally treated mussels of sp. Mytilus galloprovincialis, including up to 128 saturated, mono- or poly-unsaturated and 63 oxidized (i.e., modified by hydroxylic, carbonylic and/or epoxylic groups) compounds, was achieved using reverse phase chromatography coupled to electrospray ionization-Fourier transform single and tandem mass spectrometry (RPC-ESI-FTMS,MS/MS). Subsequent Principal Components Analysis (PCA) evidenced several effects of thermal treatments on the mussel FFA profiles...
July 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29563047/distress-and-eustress-of-reactive-electrophiles-and-relevance-to-light-stress-acclimation-via-stimulation-of-thiol-disulphide-based-redox-defences
#7
Thomas Roach, Wolfgang Stöggl, Theresa Baur, Ilse Kranner
Photosynthetic organisms suffering from light stress have to cope with an increased formation of reactive short-chain aldehydes. Singlet oxygen generated from highly-charged reaction centres can peroxidise the poly-unsaturated fatty acid (PUFA)-rich thylakoid membranes they are embedded in. Lipid peroxides decay to release α,β-unsaturated aldehydes that are reactive electrophile species (RES). Acrolein is one of the most abundant and reactive RES produced in chloroplasts. Here, in the model chlorophyte alga Chlamydomonas reinhardtii, a clear concentration-dependent "distress" induced by acrolein intoxication was observed in conjunction with depletion of the glutathione pool...
March 18, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29546329/metabolomics-identifies-distinctive-metabolite-signatures-for-measures-of-glucose-homeostasis-the-insulin-resistance-atherosclerosis-family-study-iras-fs
#8
Nicholette D Palmer, Hayrettin Okut, Fang-Chi Hsu, Maggie C Y Ng, Yii-Der Ida Chen, Mark O Goodarzi, Kent D Taylor, Jill M Norris, Carlos Lorenzo, Jerome I Rotter, Richard N Bergman, Carl D Langefeld, Lynne E Wagenknecht, Donald W Bowden
Context: Metabolomics provides a biochemical fingerprint that, when coupled with clinical phenotypes, can provide insight into physiological processes. Objective: Survey metabolites associated with dynamic and basal measures of glucose homeostasis. Design: Analysis of 733 plasma metabolites from the Insulin Resistance Atherosclerosis Family Study. Setting: Community based. Participants: One thousand one hundred eleven Mexican Americans...
May 1, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29518657/magnesium-and-organic-biostimulant-integrative-application-induces-physiological-and-biochemical-changes-in-sunflower-plants-and-its-harvested-progeny-on-sandy-soil
#9
Hafeez Ur Rehman, Hesham F Alharby, Yahya Alzahrani, Mostafa M Rady
Magnesium (Mg) often leaches down in sandy soils due to high mobility and its foliar application proves to be beneficial. Organic biostimulants also prove to be helpful to affect plant physio-biochemistry and antioxidative defense system. The present study evaluated the beneficial effects of seed soaking in maize grain extract (MGE; 3%) in integration with or without foliar Mg (1 mM) in comparison to control (no treatment) on growth, yield performance, seed oil and fatty acid profile including physiological and biochemical basis of Hysun-336 sunflower hybrid grown on a sandy soil under greenhouse conditions...
May 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29514429/fatty-acid-profile-and-oxidation-tests-of-fat-extracted-from-yogurt-using-rose-hip-seed-oil
#10
Katarzyna Turek, Jacek Domagała, Monika Wszołek
BACKGROUND: Yogurt is a dairy product with a high nutritional value. However, like all milk products, it contains milk fat and is rich in saturated fatty acids. It would be desirable to enrich dairy products in poly- unsaturated fatty acids to increase dietary intake amongst consumers and improve their health. Also, some LAB bacteria are able to produce CLA and CLnA isomers from linoleic and linolenic acids. The aim of this study was to investigate the chemical properties and fatty acid profile of yogurt with the addition of 3...
January 2018: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/29487436/nutritional-quality-of-different-grades-of-adult-male-chinese-mitten-crab-eriocheir-sinensis
#11
Qiuju Wang, Xugan Wu, Xiaowen Long, Wangling Zhu, Tianli Ma, Yongxu Cheng
This study mainly investigated the composition of adult male Chinese mitten crab ( Eriocheir sinensis ) from four grades/sizes (Grade I: 200-249 g; Grade II: 175-199 g; Grade III: 150-174 g; Grade IV: ≤ 150 g). The results showed that the grade III crabs had the largest gonadsomatic index (GSI), which was significantly higher than the grade I and grade II crabs, no significant difference was found with the grade IV crab. Significant differences in moisture and total lipid contents were observed among various edible parts from different grades of male Eriocheir sinensis ...
March 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29445419/highly-efficient-conversion-of-plant-oil-to-bio-aviation-fuel-and-valuable-chemicals-by-combination-of-enzymatic-transesterification-olefin-cross-metathesis-and-hydrotreating
#12
Meng Wang, Mojin Chen, Yunming Fang, Tianwei Tan
Background: The production of fuels and chemicals from renewable resources is increasingly important due to the environmental concern and depletion of fossil fuel. Despite the fast technical development in the production of aviation fuels, there are still several shortcomings such as a high cost of raw materials, a low yield of aviation fuels, and poor process techno-economic consideration. In recent years, olefin metathesis has become a powerful and versatile tool for generating new carbon-carbon bonds...
2018: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29423386/erythrocyte-membrane-unsaturated-mono-and-poly-fatty-acids-profile-in-newly-diagnosed-basal-cell-carcinoma-patients
#13
Fatemeh Rahrovani, Mohammad Hassan Javanbakht, Ehsan Ghaedi, Hamed Mohammadi, Amir-Hooshang Ehsani, Ali Esrafili, Mahmoud Djalali
Studies have reported different changes in the fatty acid composition of red blood cell (RBC) total lipids in patients with various types of cancer. It has been indicated that n-3/n-6 ratio plays a key role in the general consequence of skin photocarcinogenesis. However, to our knowledge there was no study examining the unsaturated fatty acid profile in basal cell carcinoma (BCC) patients. So, we explore the fatty acid composition of RBCs in newly diagnosed BCC patients in a hospital-based case-control study...
January 2018: Clinical Nutrition Research
https://www.readbyqxmd.com/read/29420307/the-roles-of-special-proresolving-mediators-in-pain-relief
#14
Lan-Yu Zhang, Ming-Rui Jia, Tao Sun
The resolution of acute inflammation, once thought to be a passive process, is now recognized as an active one. The productions of endogenous special proresolving mediators (SPMs) are involved in this process. SPMs, including lipoxins, resolvins, protectins, and maresins, are endogenous lipid mediators generated from ω-6 arachidonic acid or ω-3 poly-unsaturated fatty acids during the resolution phase of acute inflammation. They have potent anti-inflammatory and proresolving actions in various inflammatory disorders...
February 8, 2018: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29341024/advanced-contrast-agents-for-multimodal-biomedical-imaging-based-on-nanotechnology
#15
Daniel Calle, Paloma Ballesteros, Sebastián Cerdán
Clinical imaging modalities have reached a prominent role in medical diagnosis and patient management in the last decades. Different image methodologies as Positron Emission Tomography, Single Photon Emission Tomography, X-Rays, or Magnetic Resonance Imaging are in continuous evolution to satisfy the increasing demands of current medical diagnosis. Progress in these methodologies has been favored by the parallel development of increasingly more powerful contrast agents. These are molecules that enhance the intrinsic contrast of the images in the tissues where they accumulate, revealing noninvasively the presence of characteristic molecular targets or differential physiopathological microenvironments...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29324859/magnetic-resonance-spectroscopy-detects-differential-lipid-composition-in-mammary-glands-on-low-fat-high-animal-fat-versus-high-fructose-diets
#16
COMPARATIVE STUDY
Dianning He, Devkumar Mustafi, Xiaobing Fan, Sully Fernandez, Erica Markiewicz, Marta Zamora, Jeffrey Mueller, Joseph R Sachleben, Matthew J Brady, Suzanne D Conzen, Gregory S Karczmar
The effects of consumption of different diets on the fatty acid composition in the mammary glands of SV40 T-antigen (Tag) transgenic mice, a well-established model of human triple-negative breast cancer, were investigated with magnetic resonance spectroscopy and spectroscopic imaging. Female C3(1) SV40 Tag transgenic mice (n = 12) were divided into three groups at 4 weeks of age: low fat diet (LFD), high animal fat diet (HAFD), and high fructose diet (HFruD). MRI scans of mammary glands were acquired with a 9...
2018: PloS One
https://www.readbyqxmd.com/read/29304430/-force-from-lipids-gating-of-mechanosensitive-channels-modulated-by-pufas
#17
Pietro Ridone, Stephan L Grage, Amrutha Patkunarajah, Andrew R Battle, Anne S Ulrich, Boris Martinac
The level of fatty acid saturation in phospholipids is a crucial determinant of the biophysical properties of the lipid bilayer. Integral membrane proteins are sensitive to changes of their bilayer environment such that their activities and localization can be profoundly affected. When incorporated into phospholipids of mammalian cells, poly-unsaturated fatty acids (PUFAs) determine the mechanical properties of the bilayer thereby affecting several membrane-associated functions such as endo- and exo-cytosis and ion channel/membrane receptor signalling cascades...
March 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29298649/an-inflammation-related-nutrient-pattern-is-associated-with-both-brain-and-cognitive-measures-in-a-multiethnic-elderly-population
#18
Yian Gu, Jennifer J Manly, Richard P Mayeux, Adam M Brickman
BACKGROUND: Accumulating evidence suggests that dietary factors are associated with Alzheimer's disease, cognition, and brain health in older adults. It is however unclear whether inflammation explains this association. OBJECTIVE: To examine whether an inflammation-related nutrient pattern (INP) was associated with neuroimaging and cognitive measures of brain health. METHOD: The current cross-sectional study included 330 non-demented elderly (mean age 79 years at MRI scan) participants in a multi-ethnic, community-based cohort study who had information on nutritional intake (estimated from food frequency questionnaire), circulating C-reactive protein and interleukin- 6 (measured by ELISA), MRI scans, and cognition...
March 14, 2018: Current Alzheimer Research
https://www.readbyqxmd.com/read/29282829/electrochemical-oxidation-of-phosphatidylethanolamines-studied-by-mass-spectrometry
#19
Simone Colombo, Giulia Coliva, Agnieszka Kraj, Jean-Pierre Chervet, Maria Fedorova, Pedro Domingues, M Rosário Domingues
No abstract text is available yet for this article.
March 2018: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/29282085/effects-of-12-week-supplementation-of-marine-omega-3-pufa-based-formulation-omega3q10-in-older-adults-with-prehypertension-and-or-elevated-blood-cholesterol
#20
Tian Shen, Guoqiang Xing, Jingfen Zhu, Shuxian Zhang, Yong Cai, Donghua Li, Gang Xu, Evan Xing, Jianyu Rao, Rong Shi
BACKGROUNDS: To study the effects of supplementation of a marine omega-3 poly-unsaturated fatty acids (n3-PUFA) formulation (Omega3Q10) in older adults with hypertension and/or hypercholesterolemia. METHODS: A total of 97 people were enrolled to receive 12-week supplementation of either Omega3Q10 (n = 48) or soybean oil (n = 49). Total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), and hypertension-related symptoms were determined before and after the supplementation...
December 27, 2017: Lipids in Health and Disease
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