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Oleic acid

M Guidoni, M M de Christo Scherer, M M Figueira, E F P Schmitt, L C de Almeida, R Scherer, S Bogusz, M Fronza
Vegetable oils have been used for a plethora of health benefits by their incorporation in foods, cosmetics, and pharmaceutical products, especially those intended for skin care. This study aimed to investigate the cutaneous benefits of a vegetable oil blend (VOB) formulation and its fatty acid composition. The anti-inflammatory activity was studied in macrophages of RAW 264.7 cells by investigating the release of nitric oxide (NO), superoxide anion generation (O2-), tumor necrosis factor-alpha (TNF-α), and interleukin 6 (IL-6)...
February 14, 2019: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Katie A O'Brien, R Andrew Atkinson, Larissa Richardson, Albert Koulman, Andrew J Murray, Stephen D R Harridge, Daniel S Martin, Denny Z H Levett, Kay Mitchell, Monty G Mythen, Hugh E Montgomery, Michael P W Grocott, Julian L Griffin, Lindsay M Edwards
At high altitude oxygen delivery to the tissues is impaired leading to oxygen insufficiency (hypoxia). Acclimatisation requires adjustment to tissue metabolism, the details of which remain incompletely understood. Here, metabolic responses to progressive environmental hypoxia were assessed through metabolomic and lipidomic profiling of human plasma taken from 198 human participants before and during an ascent to Everest Base Camp (5,300 m). Aqueous and lipid fractions of plasma were separated and analysed using proton (1 H)-nuclear magnetic resonance spectroscopy and direct infusion mass spectrometry, respectively...
February 19, 2019: Scientific Reports
Yanhua Xu, Qinghu Wang, Wenqiang Bao, Biligetu Pa
Artemisia integrifolia L (Compositae) is a medicinal and edible plant. To investigate its antihyperlipidemic effect, a crude lipophilic extract and the composing compounds were isolated and fractioned from the petroleum ether extract of aerial parts of A. integrifolia using column chromatography on silica gel. The anti-hyperlipidemia effect was studied in a rat model of acute hyperlipidemia, which was induced by triton WR-1339. A new compound, integrinol ( 4 ), together with nine known compounds, namely chamazulene ( 1 ), acetylenes (E)-2 ( 2 ), acetylenes (E)-3 ( 3 ), eugenol ( 5 ), palmitic acid ( 6 ), oleic acid ( 7 ), linoleic acid ( 8 ), linolenic acid ( 9 ) and 12,13-epoxylinolenic acid were isolated from the crude lipophilic extract of A...
February 17, 2019: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Man Zhao, Wenyi Wang, Lei Wei, Peng Chen, Li Peng, Zhen Qin, Fengjie Yuan, Zhao Wang, Xiangxian Ying
Unsaturated fatty acids are the main components of vegetable oils. Fatty acid desaturase 2 (FAD2) catalyzes oleic acid (OA) into linoleic acid (LA) transformations, which are essential to the profile of FAs in seeds. To further understand the roles of FAD2s in the synthesis of oil, the evolution and biocatalysis of FAD2s were comprehensively analyzed. The evolution history of the FAD2 gene family showed that most of the FAD2 genes formed monophyletic clades except in eudicots. The FAD2 genes in some eudicots diverged into constitutive and seed-specific expression clades...
February 15, 2019: International Journal of Molecular Sciences
Fuki Kawaguchi, Hiroto Kigoshi, Moriyuki Fukushima, Eiji Iwamoto, Eiji Kobayashi, Kenji Oyama, Hideyuki Mannen, Shinji Sasazaki
In our previous study, we detected a QTL for the oleic acid percentage (C18:1) on BTA9 in Japanese Black cattle through a genome-wide association study (GWAS). In this study, we performed whole-genome resequencing on eight animals with higher and lower C18:1 to identify candidate polymorphisms for the QTL. A total of 39,658 polymorphisms were detected in the candidate region, which were narrowed to 1993 polymorphisms within 23 genes based on allele differences between the high and low C18:1 groups. We subsequently selected three candidate genes, that is, CYB5R4, MED23, and VNN1, among the 23 genes based on their function in fatty acid metabolism...
February 19, 2019: Animal Science Journal, Nihon Chikusan Gakkaihō
Xiaohong Liu, Xin Zeng, Xuanming Chen, Ruixi Luo, Linzhao Li, Chengshi Wang, Jingping Liu, Jingqiu Cheng, Yanrong Lu, Younan Chen
PURPOSE: It is demonstrated that unsaturated fatty acids can counteract saturated fatty acids-induced lipotoxicity, but the molecular mechanisms are unclear. In this study, we investigated the protective effects of monounsaturated oleic acid (OA) against saturated palmitic acid (PA)-induced cytotoxicity in rat β cells as well as islets, and mechanistically focused on its regulation on endoplasmic reticulum (ER) stress. METHODS: Rat insulinoma cell line INS-1E cells and primary islets were treated with PA with or without OA for 24 h to determine the cell viability, apoptosis, and ER stress...
February 18, 2019: Endocrine
Xiaoyan Gao, Chunbo Leng, Guang Zeng, Dong Fu, Yunhong Zhang, Yong Liu
Despite considerable effort has been directed to ozone-initiated heterogeneous oxidation of unsaturated organic species in atmospheric environment, current knowledge about how chemical structure of unsaturated carboxylic acids affects their reaction kinetics remains very limited. Here, kinetics of heterogeneous reaction of ozone with six unsaturated fatty acids (oleic acid, vaccenic acid, eladic acid, myristoleic acid, palmitoleic acid and 2-hexadecenoic acid) were studied via a flow system combined with attenuated total reflection Fourier-transformed infrared spectroscopy (ATR-FTIR)...
February 12, 2019: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Kate J Bowen, Penny M Kris-Etherton, Sheila G West, Jennifer A Fleming, Philip W Connelly, Benoît Lamarche, Patrick Couture, David J A Jenkins, Carla G Taylor, Peter Zahradka, Shatha S Hammad, Jyoti Sihag, Xiang Chen, Valérie Guay, Julie Maltais-Giguère, Danielle Perera, Angela Wilson, Sandra Castillo San Juan, Julia Rempel, Peter J H Jones
BACKGROUND: Novel oils high in monounsaturated fatty acids (MUFAs) and low in saturated fatty acids (SFAs) are an alternative to partially hydrogenated oils high in trans-unsaturated fatty acids. There is widespread use of high-MUFA oils across the food industry; however, limited knowledge of their cardiovascular impact exists. OBJECTIVES: We investigated the effects of diets containing canola oil, high-oleic acid canola oil (HOCO), and a control oil blend (diet formulated to emulate a Western fat profile) on lipids, lipoproteins, and apolipoproteins (apos), as secondary outcomes of the trial...
February 15, 2019: Journal of Nutrition
Kazumi Satogami, Ping-Tao Tseng, Kuan-Pin Su, Shun Takahashi, Satoshi Ukai, Dian-Jeng Li, Tien-Yu Chen, Pao-Yen Lin, Yen-Wen Chen, Yutaka J Matsuoka
OBJECTIVES: Eating disorders result in poor nutrition, poor physical conditions and even suicidality and mortality. Although polyunsaturated fatty acids (PUFAs) have attracted attention in the emerging field of nutritional psychiatry, their role in eating disorders remains unknown. This meta-analysis investigates the differences of PUFA levels between patients with eating disorders and healthy controls, and the potentially beneficial effects of PUFAs in such patients. METHODS: We conducted a systematic literature search and meta-analysis under the random effects model...
March 2019: Prostaglandins, Leukotrienes, and Essential Fatty Acids
Denilson de Jesus Assis, Joana Santos, Cristiane Santos de Jesus, Carolina Oliveira de Souza, Samantha Serra Costa, Andréa Lobo Miranda, Jaff Ribeiro da Silva, Maria Beatriz Prior Pinto Oliveira, Janice Izabel Druzian
Bacteria that are capable of accumulating lipids in their cells as storage compounds can also produce polyhydroxyalkanoates of high technological value, depending on the specific culture conditions. The objective of this study was to utilize crude glycerol from biodiesel (CGB) as a substrate, which is a major byproduct from biodiesel production, to produce lipophilic compounds. Bacillus megaterium INCQS 425 was cultivated and evaluated for the production of lipophilic compounds and the properties of these compounds were investigated...
February 14, 2019: International Journal of Biological Macromolecules
Oren Rom, Guan Xu, Yanhong Guo, Yunhao Zhu, Huilun Wang, Jifeng Zhang, Yanbo Fan, Wenying Liang, Haocheng Lu, Yuhao Liu, Michael Aviram, Zhipeng Liu, Seongho Kim, Wanqing Liu, Xueding Wang, Y Eugene Chen, Luis Villacorta
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) and resulting nonalcoholic steatohepatitis (NASH) are reaching global epidemic proportions. Lack of non-invasive diagnostic tools and effective therapies constitute two of the major hurdles for a bona fide treatment and a reversal of NASH progression and/or regression of the disease. Nitro-oleic acid (OA-NO2 ) has been proven effective in multiple experimental models of inflammation and fibrosis. Thus, the potential benefit of in vivo administration of OA-NO2 to treat advanced NAFLD was tested herein in a model of long-term NASH diet-induced liver damage...
February 13, 2019: EBioMedicine
Andrea Ianni, Denise Innosa, Camillo Martino, Lisa Grotta, Francesca Bennato, Giuseppe Martino
Zinc represents an essential microelement for several biochemical mechanisms. The body's inability to store zinc necessarily requires a constant dietary supply to avoid alteration of physiological functions. The aim of the present study was to investigate the effect of dietary enrichment with zinc on chemical-nutritional and aromatic properties of milk and cheese. Thirty commercial dairy cows, balanced for parity, milk production, and days in milk, were randomly assigned to 2 groups. The control group was fed with a conventional complete diet (22 kg of dry matter/animal per day), whereas the experimental group received a daily zinc supplementation of 60 mg per kg of dry complete feed...
February 13, 2019: Journal of Dairy Science
Nicholas K H Khoo, Marco Fazzari, Dionysios V Chartoumpekis, Lihua Li, Danielle Aparecida Guimaraes, Gavin E Arteel, Sruti Shiva, Bruce A Freeman
Non-alcoholic fatty liver disease (NAFLD) is linked to obesity and insulin resistance and is the most prevalent chronic liver disease. During the development of obesity and NAFLD, mitochondria adapt to the increased lipid load in hepatocytes by increasing the rate of fatty acid oxidation. In concert with this, reactive species (RS) generation is increased, damaging hepatocytes and inducing inflammation. Hepatic mitochondrial dysfunction is central to the pathogenesis of NAFLD via undefined mechanisms. There are no FDA approved treatments for NAFLD other than weight loss and management of glucose tolerance...
February 1, 2019: Redox Biology
R N Pena, J L Noguera, M J García-Santana, E González, J F Tejeda, R Ros-Freixedes, N Ibáñez-Escriche
The adipogenic nature of the Iberian pig defines many quality attributes of its fresh meat and dry-cured products. The distinct varieties of Iberian pig exhibit great variability in the genetic parameters for fat deposition and composition in muscle. The aim of this work is to identify common and distinct genomic regions related to fatty acid composition in Retinto, Torbiscal, and Entrepelado Iberian varieties and their reciprocal crosses through a diallelic experiment. In this study, we performed GWAS using a high density SNP array on 382 pigs with the multimarker regression Bayes B method implemented in GenSel...
February 14, 2019: Scientific Reports
Pawel Dubiela, Rebecca Del Conte, Francesca Cantini, Tomasz Borowski, Roberta Aina, Christian Radauer, Merima Bublin, Karin Hoffmann-Sommergruber, Stefano Alessandri
Plant non-specific lipid transfer proteins type 1 (nsLTP1) are small basic proteins with a hydrophobic cavity able to host a number of different ligands: i.e. fatty acids, fatty acyl-CoA, phospholipids, glycolipids, and hydroxylated fatty acids. However, ligand binding specificity differs among nsLTPs. Within this protein family, Jug r 3 from walnut has been identified as a major allergen. So far, data on the structural characterization of Jug r 3 and its lipid binding capacity are lacking. We report the results from a fluorescence-based ligand-binding assay and ligand-based NMR experiments, to study the binding interactions between Jug r 3 and the 18-carbon monounsaturated oleic acid...
February 14, 2019: Scientific Reports
Hsiu-Chi Ting, Li-Tzu Chen, Jo-Yu Chen, Yi-Li Huang, Rui-Cheng Xin, Jui-Fen Chan, Yuan-Hao Howard Hsu
BACKGROUND: Supplemented fatty acids can incorporate into cardiolipin (CL) and affect its remodeling. The change in CL species may alter the mitochondrial membrane composition, potentially disturbing the mitochondrial structure and function during inflammation. METHOD: To investigate the effect of the unsaturation of fatty acids on CL, we supplemented macrophage-like RAW264.7 cells with 18-carbon unsaturated fatty acids including oleic acid (OA, 18:1), linoleic acid (LA, 18:2), α-linolenic acid (ALA, 18:3), γ-linolenic acid (GLA, 18:3), and stearidonic acid (SDA, 18:4)...
February 14, 2019: Lipids in Health and Disease
Fu Li, Mohammad Mehdi Ramin Moayed, Eugen Klein, Rostyslav Lesyuk, Christian Klinke
The colloidal synthesis of large and thin two-dimensional (2D) nanosheets is fascinating but challenging, since the growth along the lateral dimension and vertical dimensions need to be controlled independently. In-plane anisotropy in 2D nanosheets is attracting more attention as well. We present a new improved synthesis for large colloidal single-crystalline SnS nanosheets with the thicknesses down to 7 nm and lateral sizes up to 8 µm. The synthesis uses trioctylphosphine-S as sulfur source and oleic acid as ligands...
February 14, 2019: Journal of Physical Chemistry Letters
I T Mendes, A L M Ruela, F C Carvalho, J T J Freitas, R Bonfilio, G R Pereira
Donepezil is one of the main compounds used in the therapy of Alzheimer's disease. Oral administration of this drug presents many drawbacks, resulting in treatment non-adherence among patients. Thus, the development of transdermal formulations for donepezil delivery is important. The aim of this study was to prepare and to evaluate nanostructured lipid carrier-based gels (NLC gel) able to improve the skin delivery of donepezil free base (DPB). The components of nanostructured lipid carriers (NLCs) were selected after evaluating their enhancing effects using in vitro DPB skin delivery assays...
February 6, 2019: Colloids and Surfaces. B, Biointerfaces
Wessam H Abd-Elsalam, Nermeen A ElKasabgy
Mucoadhesive olaminosomes are novel nanocarriers designed to control agomelatine release and enhance its bioavailability. Olaminosomes were prepared using oleic acid, oleylamine and sorbitan monooleate adopting thin film hydration technique. Chitosan HCl was added to impart the mucoadhesive properties to the olaminosomes. Mucoadhesive olaminosomes were characterized for their particle size, in-vitro drug release and irritation potentiality in rabbit eyes. The reduction in intraocular pressure (IOP) through 8 hours in male New Zealand Albino rabbits was measured after administration of the selected formulations...
February 11, 2019: International Journal of Pharmaceutics
Piroonporn Srimongkol, Nuttha Thongchul, Saranya Phunpruch, Aphichart Karnchanatat
To investigate the potential of application of marine cyanobacterium for concurrent biomass production and ammonium removal, Synechococcus sp. VDW was cultured under different conditions in medium containing varying concentrations of NH4 Cl. Response surface methodology (RSM) was then used to build a predictive model of the combined effects of independent variables (pH, inoculum size, ammonium concentration). At the optimum conditions of initial pH 7.4, inoculum size 0.17 (OD730) and ammonium concentration 10...
February 13, 2019: Journal of Oleo Science
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