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https://www.readbyqxmd.com/read/29305929/cytochrome-p450-4a11-inhibition-assays-based-on-characterization-of-lauric-acid-metabolites
#1
Yeon Jung Choi, Yuanyuan Zhou, Ji-Yoon Lee, Chang Seon Ryu, Young Ho Kim, Kiho Lee, Sang Kyum Kim
No abstract text is available yet for this article.
January 3, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29274970/control-of-listeria-monocytogenes-in-whole-milk-using-antimicrobials-applied-individually-and-in-combination
#2
Sarah M Kozak, Stephanie R B Brown, Yustyna Bobak, Dennis J D'Amico
Dairy product recalls and dairy-related illnesses are often the result of contamination with Listeria monocytogenes, which can occur throughout the dairy production and supply chains. The use of antimicrobial compounds is one practical approach for controlling pathogen survival and growth in foods. The goal of this study was to use fluid milk as a model system to identify listeristatic or listericidal treatments that show promise for application in fluid milk and for further evaluation in other dairy products (e...
December 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29247738/fatty-acid-binding-protein-5-mediates-the-uptake-of-fatty-acids-but-not-drugs-into-human-brain-endothelial-cells
#3
Gordon S Lee, Yijun Pan, Martin J Scanlon, Christopher J H Porter, Joseph A Nicolazzo
The purpose of this study was to examine the involvement of fatty acid binding protein 5 (FABP5), a lipid binding protein expressed at the blood-brain barrier (BBB), in fatty acid and drug uptake into human brain endothelial cells. Following transfection with siRNA against hFABP5, human brain endothelial cell (hCMEC/D3) uptake of lipophilic ligands with varying affinity to FABP5 was assessed with intracellular concentrations quantified by liquid scintillation counting, HPLC or LCMS/MS. The in situ BBB transport of [3H]-diazepam was also assessed in wild type (WT) and FABP5-deficient mice...
December 13, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29244952/metabolic-responses-of-mytilus-galloprovincialis-to-fullerenes-in-mesocosms-exposure-experiments
#4
Josep Sanchís, Marta Llorca, Mar Olmos, Gabriella Francesca Schirinzi, Cristina Bosch-Orea, Esteban Abad, Damia Barcelo, Marinella Farre
In this study, Mediterranean mussels (Mytilus galloprovincialis) were exposed through the diet to fullerene soot, at three concentrations in parallel to a control group. Their metabolomics response was assessed by high-performance liquid chromatography coupled to high-resolution mass spectrometry (HPLC-HRMS). The experiments were conducted in marine mesocosms, during 35 days (7 days of acclimatization, 21 days of exposure and 7 seven days of depuration). Real conditions were emulated in terms of physicochemical conditions of the habitat...
December 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29244710/physicochemical-and-antimicrobial-characterization-of-beeswax-starch-food-grade-nanoemulsions-incorporating-natural-antimicrobials
#5
Teresita Arredondo-Ochoa, Blanca E García-Almendárez, Monserrat Escamilla-García, Olga Martín-Belloso, Giovanna Rossi-Márquez, Luis Medina-Torres, Carlos Regalado-González
Nanoemulsions are feasible delivery systems of lipophilic compounds, showing potential as edible coatings with enhanced functional properties. The aim of this work was to study the effect of emulsifier type (stearic acid (SA), Tween 80 (T80) or Tween 80/Span 60 (T80/S60)) and emulsification process (homogenization, ultrasound or microfluidization) on nanoemulsion formation based on oxidized corn starch, beeswax (BW) and natural antimicrobials (lauric arginate and natamycin). The response variables were physicochemical properties, rheological behavior, wettability and antimicrobial activity of BW-starch nanoemulsions (BW-SN)...
December 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29213182/genetic-engineering-of-medium-chain-length-fatty-acid-synthesis-in-dunaliella-tertiolecta-for-improved-biodiesel-production
#6
Huixin Lin, Yuan Kun Lee
Genetic engineering of microalgae to accumulate high levels of medium-chain-length fatty acids (MCFAs) represents an attractive strategy to improve the quality of microalgae-based biodiesel, but it has thus far been least successful. We demonstrate that one limitation is the availability of fatty acyl-acyl carrier protein (ACP) substrate pool for acyl-ACP thioesterase (TE). A combinational expression platform that involved plant lauric acid-biased TE (C12TE) and MCFA-specific ketoacyl-ACP synthase (KASIV) increased lauric acid (C12:0) and myristic acid (C14:0) accumulation by almost sevenfold and fourfold, respectively, compared with native strain...
2017: Journal of Applied Phycology
https://www.readbyqxmd.com/read/29182278/understanding-how-sterols-regulate-membrane-remodeling-in-supported-lipid-bilayers
#7
Lisa Margaret Kawakami, Bo Kyeong Yoon, Joshua Alexander Jackman, Wolfgang Knoll, Paul S Weiss, Nam-Joon Cho
The addition of single-chain lipid amphiphiles such as antimicrobial fatty acids and monoglycerides to confined, two-dimensional phospholipid bilayers can trigger the formation of three-dimensional membrane morphologies as a passive means to regulate stress. To date, relevant experimental studies have been conducted using pure phospholipid compositions and extending such insights to more complex, biologically relevant lipid compositions that include phospholipids and sterols is warranted because sterols are important biological mediators of membrane stress relaxation...
November 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29177992/effect-of-acrocomia-aculeata-kernel-oil-on-adiposity-in-type-2-diabetic-rats
#8
Ângela A Nunes, Danieli F Buccini, Jeandre A S Jaques, Luciane C Portugal, Rita C A Guimarães, Simone P Favaro, Ruy A Caldas, Cristiano M E Carvalho
The macauba palm (Acrocomia aculeata) is native of tropical America and is found mostly in the Cerrados and Pantanal biomes. The fruits provide an oily pulp, rich in long chain fatty acids, and a kernel that encompass more than 50% of lipids rich in medium chain fatty acids (MCFA). Based on biochemical and nutritional evidences MCFA is readily catabolized and can reduce body fat accumulation. In this study, an animal model was employed to evaluate the effect of Acrocomia aculeata kernel oil (AKO) on the blood glucose level and the fatty acid deposit in the epididymal adipose tissue...
November 25, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/29172966/antiquorum-sensing-activity-of-seed-oils-from-oleaginous-plants-and-protective-effect-during-challenge-with-chromobacterium-violaceum
#9
Macrina Pérez-López, Rodolfo García-Contreras, Marcos Soto-Hernández, José Salud Rodríguez-Zavala, Mariano Martínez-Vázquez, Francisco Javier Prado-Galbarro, Israel Castillo-Juárez
Seed oils from oleaginous plants are rich in fatty acids (FAs) that play important roles in the health of the consumers. Recent studies indicate that FA also can play an important role in communication and regulation of virulence in bacteria. Nevertheless, evidence demonstrating protection against bacterial infections mediated by their quorum sensing inhibition (QSI) activity is scarce. In this study, sunflower, chia, and amaranth oils, were assayed for their QSI capacity by inhibiting violacein production and alkaline exoprotease activity of Chromobacterium violaceum...
November 27, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29156154/coconut-phytocompounds-inhibits-polyol-pathway-enzymes-implication-in-prevention-of-microvascular-diabetic-complications
#10
Devi Lekshmi Sheela, Puthiyaveetil Abdulla Nazeem, Arunaksharan Narayanankutty, R Muthangaparambil Shylaja, Sangeetha P Davis, Priyanga James, Ravisankar Valsalan, Thekkekara Devassy Babu, Achuthan C Raghavamenon
Coconut oil (CO), the primary choice of cooking purposes in the south Asian countries, is rich in medium chain saturated fatty acids, especially lauric acid (50-52%). The oil has high medicinal use in Ayurvedic system and known to contain polyphenolic antioxidants. Studies have reported that CO improves insulin sensitivity and shows hypoglycemic effect. However, there is no information regarding its effect on chronic diabetic complications including retinopathy and nephropathy is available. The secondary diabetic complications are mediated by the activation of polyol pathway, where aldose reductase (AR) plays crucial role...
December 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29127809/optimisation-of-the-antifungal-potency-of-the-amidated-peptide-h-orn-orn-trp-trp-nh2-against-food-contaminants
#11
Thibaut Thery, Yvonne O'Callaghan, Nora O'Brien, Elke K Arendt
The design of novel efficient antimicrobial peptides (AMPs) faces several issues, such as cost of synthesis, proteolytic stability or cytotoxicity. The identification of key determinants involved in the activity of AMPs, such as cationicity and amphipathicity, allowed the synthesis of short peptides with optimized properties. An ultrashort peptide made of the sequence H-Orn-Orn-Trp-Trp-NH2 (O3TR) showed antifungal activity against several contaminants from food products. This peptide inhibited the growth of the filamentous fungi Fusarium culmorum, Penicillium expansum and Aspergillus niger within a range of concentration of 12...
November 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29079969/coconut-products-improve-signs-of-diet-induced-metabolic-syndrome-in-rats
#12
Sunil K Panchal, Sharyn Carnahan, Lindsay Brown
Increasing prevalence of obesity and metabolic syndrome warrants identification of potential therapeutic options for intervention. This study tested commercially available Virgin Coconut Oil and Coconut Nourish, as coconuts are rich sources of lauric and myristic acids. Male Wistar rats were fed either corn starch diet (C); high-carbohydrate, high-fat diet (H); high-carbohydrate, high-virgin coconut oil diet (HV); or high-carbohydrate, high-coconut Nourish diet (HN) for 16 weeks. Metabolic, liver, and cardiovascular health parameters were measured during and at the end of the study...
December 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/29043450/immobilization-of-lipase-on-carboxylic-acid-modified-silica-nanoparticles-for-olive-oil-glycerolysis
#13
Abhishek Kumar Singh, Mausumi Mukhopadhyay
In this study, the silica nanoparticles surface was modified by carboxylic acid with different number of alkyl chain and two different lipases were immobilized on it to increase the glycerolysis activity of the immobilized lipases in organic solvent system. Silica nanoparticles of about 15 nm diameter were grafted with various carboxylic acid modifiers from valeric, caprylic, capric, lauric, stearic and oleic acids. Lipases from Candida antarctica and Candida rugosa were immobilized onto the carboxylic acid, modified silica nanoparticles and used in the mono and diglycerides production through glycerolysis with or without organic solvents...
October 17, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29037667/hexafluoroisopropanol-induced-salt-free-catanionic-surfactant-coacervate-extraction-method-for-determination-of-fluoroquinolones-in-milk-samples
#14
Jia Xu, Xiao Li, Cao Li, Jia Chen, Yuxiu Xiao
Coacervation and phase separation were first reported in salt-free catanionic surfactant aqueous systems based on lauric acid (LA) and dodecyltrimethylammonium hydroxide (DTAOH), using hexafluoroisopropanol (HFIP) as a coacervate-inducing agent. The liquid-liquid two-phase separation occurs over a wide of LA/DTAOH molar ratios (78:22-0:100mol/mol) and total surfactant concentrations (5-200mmolL(-1)) upon adding a small amount of HFIP (<10%, v/v). HFIP-induced salt-free LA/DTAOH catanionic surfactant system has much wider two-phase region than HFIP-induced salt-containing sodium laurate/dodecyltrimethylammonium bromide system...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29035747/studies-on-the-adsorption-and-desorption-of-mitoxantrone-to-lauric-acid-albumin-coated-iron-oxide-nanoparticles
#15
Jan Zaloga, Artem Feoktystov, Vasil M Garamus, Weronika Karawacka, Alexander Ioffe, Thomas Brückel, Rainer Tietze, Christoph Alexiou, Stefan Lyer
A rational use of superparamagnetic iron oxide nanoparticles (SPIONs) in drug delivery, diagnostics, and other biomedical applications requires deep understanding of the molecular drug adsorption/desorption mechanisms for proper design of new pharmaceutical formulations. The adsorption and desorption of the cytostatic Mitoxantrone (MTO) to lauric acid-albumin hybrid coated particles SPIONs (SEON(LA-HSA)) was studied by Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), surface titration, release experiments and small-angle neutron and X-ray scattering...
September 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29031401/screening-of-some-lesser-known-tree-borne-oilseed-plants-from-north-east-india-for-their-oil-content-and-major-fatty-acid-components
#16
Bithika Chaliha, Lipika Lahkar, Anjali Doley, Rumi Kotoky, Siddhartha P Saikia, Subhan C Nath
Forest of North-East India is rich in a variety of tree borne oilseeds and there were no serious efforts to exploit the less known oilseeds of the forest origin. Considering the vast plant wealth and with an objective to explore these untapped potentialities of oilseed resources of NE India, a research program was undertaken. The present communication is based on the investigation of seeds of 14 lesser known plant species for fats and oils. The screened plant species exhibited oil yield ranging from 4.71% to 48...
November 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29018344/xanthates-as-useful-probes-for-testing-the-active-sites-of-cytochromes-p450-4a11-and-2e1
#17
Tsveta Stoyanova, Iglika Lessigiarska, Momir Mikov, Ilza Pajeva, Stanislav Yanev
Xanthates (alkyl or aryl derivatives of dithiocarbonic acid) have been shown to be selective mechanism-based inactivators of cytochromes P450 2B1/2B6 and 2E1 due to covalent binding of a reactive intermediate to apoprotein after double hydrogen abstraction at α-carbon atom, suggesting interaction of the xanthate dithiocarbonic head with the enzyme heme. The structures of xanthates with a long alkyl chain are similar to the fatty acids. Saturated fatty acids (FA) such as lauric acid (LA), are metabolized by different cytochrome P450 isoforms to ω- and (ω-1)-hydroxy products, in humans done by CYP4A11 and CYP2E1, respectively...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29018033/expression-and-functional-characterization-of-breast-cancer-associated-cytochrome-p450-4z1-in-saccharomyces-cerevisiae
#18
Matthew G McDonald, Sutapa Ray, Clara J Amorosi, Katherine A Sitko, John P Kowalski, Lorela Paco, Abhinav Nath, Byron M Gallis, Rheem A Totah, Maitreya J Dunham, Douglas M Fowler, Allan E Rettie
CYP4Z1 is an 'orphan' P450 enzyme that has provoked interest because of its hypothesized role in breast cancer through formation of the signaling molecule 20-HETE. We expressed human CYP4Z1 in Saccharomyces cerevisiae and evaluated its catalytic capabilities towards arachidonic and lauric acids (AA and LA). Specific and sensitive mass spectrometry assays enabled discrimination of the regioselectivity of hydroxylation of these two fatty acids. CYP4Z1 generated 7-, 8-, 9-, 10- and 11-hydroxy LA, while the 12-hydroxy metabolite was not detected...
October 10, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28977478/hollow-fiber-supported-ionic-liquids-liquid-phase-micro-extraction-followed-by-high-performance-liquid-chromatography-for-the-determination-of-polycyclic-aromatic-hydrocarbons-in-milk-samples
#19
Meng Wang, Chunsheng Cheng, Chunbo Liu, Yaling Yang
A rapid, simple, reliable and efficient hollow fiber supported ionic liquids liquid-phase micro-extraction method (IL-HF-LPME) followed by high-performance liquid chromatography was successfully applied to the determination of four kinds of polycyclic aromatic hydrocarbons (PAHs) in milk samples. In the IL-HF-LPME method, a mixture of [OMIM]PF6 and lauric acid, in a ratio of 3:1, was immobilized in the pores of a polypropylene hollow fiber used as extraction solvent. A series of essential parameters influencing the extraction efficiency were investigated and optimized...
August 22, 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28972495/characterization-of-sulphide-silt-pe-loids-in-some-lakes-within-adjara-region-and-determination-of-the-biologically-active-compounds-content
#20
T Masiukovichi, M Jokhadze, T Murtazashvili, A Bakuridze
Medicinal muds, so called Peloids in the last decade attract attention in many countries as effective means for the treatment- preventive, and perfumery-cosmetic purposes. It has been established that the possibilities of this formation of nature are not limited to the many-year experience of the mankind. In terms of further improvement of the human social sphere, nowadays peloids are referred to as XXI century material. The aim of the research was to study the physical-chemical characteristics, such as: humidity, pH, ash content, bulk (volumetric) density and organoleptic properties of sulphide silt peloids of some Adjara region lakes, as well as to determine the content of mineral and organic compounds (humic and organic acids)...
September 2017: Georgian Medical News
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