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Essential fatty acids

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https://www.readbyqxmd.com/read/28655214/nutritional-value-chemical-composition-and-antioxidant-activity-of-three-tuber-species-from-china
#1
Xiangyuan Yan, Yanwei Wang, Xiaoyu Sang, Li Fan
Nutritional value, chemical composition and antioxidant activity of the traditional edible truffles Tuber latisporum, T. subglobosum and T. pseudohimalayense, from China were evaluated. Powder formulations of the three truffles revealed the presence of essential nutrients, such as proteins, carbohydrates and unsaturated fatty acids, and T. latisporum presented the highest contents of total sugar (50.10 g/100 g) and monounsaturated fatty acids (265.19 mg/100 g dw); T. pseudohimalayense showed the highest content of polyunsaturated fatty acids (367...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28651830/maternal-plasma-n-3-and-n-6-polyunsaturated-fatty-acids-during-pregnancy-and-features-of-fetal-health-fetal-growth-velocity-birth-weight-and-duration-of-pregnancy
#2
Nina H Grootendorst-van Mil, Henning Tiemeier, Jolien Steenweg-de Graaff, Berthold Koletzko, Hans Demmelmair, Vincent W V Jaddoe, Eric A P Steegers, Régine P M Steegers-Theunissen
BACKGROUND & AIMS: Maternal fatty acids are essential for fetal growth and development. Here, we examine associations between maternal mid-pregnancy plasma n-3 and n-6 polyunsaturated fatty acids (PUFAs) and fetal health determined by fetal growth velocity, birth weight and duration of pregnancy. METHODS: Participants were 6974 pregnant women and their infants from a population-based birth cohort, the Generation R Study. Maternal plasma n-3:n-6 PUFA ratio and n-3 and n-6 PUFA percentage in glycerophospholipids in mid-pregnancy were related to fetal growth velocity calculated from repeatedly measured weight, length and head circumference, birth weight, and duration of pregnancy...
June 10, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28651694/maternal-plasma-phosphatidylcholine-polyunsaturated-fatty-acids-during-pregnancy-and-offspring-growth-and-adiposity
#3
Jonathan Y Bernard, Mya-Thway Tint, Izzuddin M Aris, Ling-Wei Chen, Phaik Ling Quah, Kok Hian Tan, George Seow-Heong Yeo, Marielle V Fortier, Fabian Yap, Lynette Shek, Yap-Seng Chong, Peter D Gluckman, Keith M Godfrey, Philip C Calder, Mary F F Chong, Michael S Kramer, Jérémie Botton, Yung Seng Lee
BACKGROUND: Polyunsaturated fatty acids (PUFA) are essential for offspring development, but it is less clear whether pregnancy PUFA status affects growth and adiposity. METHODS: In 985 mother-offspring pairs from the ongoing Singaporean GUSTO cohort, we analyzed the associations between offspring growth and adiposity outcomes until age 5 years and five PUFAs of interest, measured in maternal plasma at 26-28 weeks' gestation: linoleic acid (LA), arachidonic acid, α-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid (DHA)...
June 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28651692/long-chain-fatty-acids-and-related-pro-inflammatory-specialized-pro-resolving-lipid-mediators-and-their-intermediates-in-preterm-human-milk-during-the-first-month-of-lactation
#4
D T Robinson, H L Palac, V Baillif, E Van Goethem, M Dubourdeau, L Van Horn, C R Martin
This study aimed to measure longitudinal quantities of the long chain fatty acids, their biologically active terminal metabolites and related intermediates (also called oxylipins) in preterm human milk expressed during the first month of lactation. In a prospective cohort, breast milk was collected throughout the first month of lactation in 30 women who delivered preterm infants. Eighteen bioactive lipids and their intermediates were quantified via solid phase extraction and LC-MS/MS. Analysis by GC-FID quantified the fatty acid precursors...
June 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28649430/predicting-growth-of-the-healthy-infant-using-a-genome-scale-metabolic-model
#5
Avlant Nilsson, Adil Mardinoglu, Jens Nielsen
An estimated 165 million children globally have stunted growth, and extensive growth data are available. Genome scale metabolic models allow the simulation of molecular flux over each metabolic enzyme, and are well adapted to analyze biological systems. We used a human genome scale metabolic model to simulate the mechanisms of growth and integrate data about breast-milk intake and composition with the infant's biomass and energy expenditure of major organs. The model predicted daily metabolic fluxes from birth to age 6 months, and accurately reproduced standard growth curves and changes in body composition...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28647837/targeting-metabolic-reprogramming-in-kras-driven-cancers
#6
REVIEW
Kenji Kawada, Kosuke Toda, Yoshiharu Sakai
Mutations of KRAS are found in a variety of human malignancies, including in pancreatic cancer, colorectal cancer, and non-small cell lung cancer at high frequency. To date, no effective treatments that target mutant variants of KRAS have been introduced into clinical practice. In recent years, a number of studies have shown that the oncogene KRAS plays a critical role in controlling cancer metabolism by orchestrating multiple metabolic changes. One of the metabolic hallmarks of malignant tumor cells is their dependency on aerobic glycolysis, known as the Warburg effect...
June 24, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28647405/docosahexaenoic-acid-promotes-oligodendrocyte-differentiation-via-ppar-%C3%AE-signalling-and-prevents-tumor-necrosis-factor-%C3%AE-dependent-maturational-arrest
#7
A Bernardo, M L Giammarco, C De Nuccio, M A Ajmone-Cat, S Visentin, R De Simone, L Minghetti
Docosahexaenoic acid (DHA) is an essential omega-3 fatty acid known to be neuroprotective in several models of human diseases, including multiple sclerosis. The protective effects of DHA are largely attributed to its ability to interfere with the activity of transcription factors controlling immune and inflammatory responses, including the agonist-dependent transcription factor peroxisome proliferator-activated receptor-γ (PPAR-γ). In this study, we used primary oligodendrocyte progenitor (OP) cultures from neonatal rat brain to investigate whether DHA could influence OP maturation and directly promote myelination, as previously reported for selective PPAR-γ agonists...
June 21, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28645566/using-straw-hydrolysate-to-cultivate-chlorella-pyrenoidosa-for-high-value-biomass-production-and-the-nitrogen-regulation-for-biomass-composition
#8
Tian-Yuan Zhang, Xiao-Xiong Wang, Yin-Hu Wu, Jing-Han Wang, Victor M Deantes-Espinosa, Lin-Lan Zhuang, Hong-Ying Hu, Guang-Xue Wu
Heterotrophic cultivation of Chlorella pyrenoidosa based on straw substrate was proposed as a promising approach in this research. The straw pre-treated by ammonium sulfite method was enzymatically hydrolyzed for medium preparation. The highest intrinsic growth rate of C. pyrenoidosa reached to 0.097h(-1) in hydrolysate medium, which was quicker than that in glucose medium. Rising nitrogen concentration could significantly increase protein content and decrease lipid content in biomass, meanwhile fatty acids composition kept stable...
May 17, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28644408/isolation-and-selection-of-microalgal-strains-from-natural-water-sources-in-viet-nam-with-potential-for-edible-oil-production
#9
Tran Yen Thao, Dinh Thi Nhat Linh, Vo Chi Si, Taylor W Carter, Russell T Hill
Industrial vegetable oil production in Viet Nam depends on oil seeds and crude plant oils that are currently more than 90% imported. As the first step in investigating the feasibility of using microalgae to provide Viet Nam with a domestic source of oil for food and edible oil industries, fifty lipid-producing microalgae were isolated and characterized. The microalgae were isolated from water sources ranging from freshwater to brackish and marine waters from a wide geographic distribution in Viet Nam. Initial analyses showed that 20 of the 50 strains had good growth rates, produced high biomass and had high lipid content, ranging up to 50% of dry weight biomass...
June 23, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28638995/transport-of-long-chain-polyunsaturated-fatty-acids-in-preterm-infant-plasma-is-dominated-by-phosphatidylcholine
#10
Wolfgang Bernhard, Christoph Maas, Anna Shunova, Michaela Mathes, Katrin Böckmann, Christine Bleeker, Julia Vek, Christian F Poets, Erwin Schleicher, Axel R Franz
BACKGROUND: Docosahexaenoic (C22:6) and arachidonic (C20:4) acids are long-chain polyunsaturated fatty acids (LC-PUFA) essential to neonatal development, being present in the glycerophospholipids of all organs, particularly the brain. In plasma, LC-PUFAs are mainly present in lipoprotein lipids, which are neutral lipids (triglycerides and cholesterol esters) and glycerophospholipids, like choline containing phosphatidylcholine (PC). PURPOSE: To guide future supplementation strategies of C22:6 and C20:4 in combination with choline, we determined the distribution of C20:4 and C22:6 between PC and neutral lipid...
June 20, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28637651/pivotal-role-of-o-glcnac-modification-in-cold-induced-thermogenesis-by-brown-adipose-tissue-through-mitochondrial-biogenesis
#11
Natsuko Ohashi, Katsutaro Morino, Shogo Ida, Osamu Sekine, Mengistu Lemecha, Shinji Kume, Shi-Young Park, Cheol Soo Choi, Satoshi Ugi, Hiroshi Maegawa
Adipose tissues considerably influence metabolic homeostasis, and both white (WAT) and brown adipose tissue (BAT) play significant roles in lipid and glucose metabolism. O-GlcNAc modification is characterized by the addition of N-acetylglucosamine to various proteins by O-GlcNAc transferase (Ogt), subsequently modulating various cellular processes. However, little is known about the role of O-GlcNAc modification in adipose tissues. Here, we report the critical role of O-GlcNAc modification in cold-induced thermogenesis...
June 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28637354/essential-dietary-bioactive-lipids-in-neuroinflammatory-diseases
#12
M Valeria Catani, Valeria Gasperi, Tiziana Bisogno, Mauro Maccarrone
Under physiological conditions, neurons and glia are in a healthy, redox-balanced environment; when injury perturbs this equilibrium, a neuroinflammatory state is established by activated microglia that triggers pro-inflammatory responses and alters the oxidant/antioxidant balance, thus leading to neuronal loss and neurodegeneration. In neurodegenerative diseases (such as Alzheimer's disease, Parkinson's disease, amyothrophic lateral sclerosis, and multiple sclerosis), the brain is in a constitutively self-sustaining cycle of inflammation and oxidative stress that prompts and amplifies brain damage...
June 22, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28635162/chlamydia-trachomatis-is-responsible-for-lipid-vacuolation-in-the-amniotic-epithelium-of-fetal-gastroschisis
#13
Marcia L Feldkamp, Diane M Ward, Theodore J Pysher, Christina T Chambers
BACKGROUND: Vacuolated amniotic epithelium with lipid droplets in gastroschisis placentas is an unusual finding. Mass spectrometry of lipid droplets identified triglycerides, ester-linked to an unusual pattern of fatty acids. We hypothesize that these findings result from a Chlamydia trachomatis infection during the periconceptional period. The rising incidence of chlamydia infections has paralleled the increasing prevalence of gastroschisis among women less than 25 years of age. Histologically, young women are at greatest risk for a chlamydia infection due to their immature columnar epithelium, the preferential site for attachment of Chlamydia trachomatis infectious particle (elementary body)...
June 21, 2017: Birth defects research
https://www.readbyqxmd.com/read/28634477/metabolomic-analysis-and-mode-of-action-of-metabolites-of-tea-tree-oil-involved-in-the-suppression-of-botrytis-cinerea
#14
Jiayu Xu, Xingfeng Shao, Yonghua Li, Yingying Wei, Feng Xu, Hongfei Wang
Tea tree oil (TTO), a volatile essential oil, has been widely used as an antimicrobial agent. However, the mechanism underlying TTO antifungal activity is not fully understood. In this study, a comprehensive metabolomics survey was undertaken to identify changes in metabolite production in Botrytis cinerea cells treated with TTO. Significant differences in 91 metabolites were observed, including 8 upregulated and 83 downregulated metabolites in TTO-treated cells. The results indicate that TTO inhibits primary metabolic pathways through the suppression of the tricarboxylic acid (TCA) cycle and fatty acid metabolism...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28629973/%C3%AE-eleostearic-acid-containing-triglycerides-for-a-continuous-assay-to-determine-lipase-sn-1-and-sn-3-regio-preference
#15
Meddy El Alaoui, Laurent Soulère, Alexandre Noiriel, Yves Queneau, Abdelkarim Abousalham
Lipases are essentially described as sn-1 and sn-3 regio-selective. Actually few methods are available to measure this lipase regio-selectivity, moreover they require chiral chromatography analysis or specific derivations which are discontinuous and time consuming. In this study we describe a new, convenient, sensitive and continuous spectrophotometric method to screen lipases regio-selectivity using synthetic triglycerides (TG) containing α-eleostearic acid (9Z, 11E, 13E-octadecatrienoic acid) either at the sn-1 position [1-α-eleostearoyl-2,3-octadecyl-sn-glycerol (sn-EOO)] or at the sn-3 position [1,2-octadecyl-3-α-eleostearoyl-sn-glycerol (sn-OOE)] and coated onto the wells of microtiter plates...
June 16, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28628687/the-infatuation-with-biotin-supplementation-is-there-truth-behind-its-rising-popularity-a-comparative-analysis-of-clinical-efficacy-versus-social-popularity
#16
Teo Soleymani, Kristen Lo Sicco, Jerry Shapiro
<p>Biotin, also known as Vitamin B7 or vitamin H, is a water-soluble B vitamin that acts as an essential cofactor for several carboxylases involved in the cellular metabolism of fatty acids, amino acids, and gluconeogenesis. Although there exists an incredible amount of social media hype and market advertising touting its efficacy for the improvement of hair quantity and quality, biotin's efficacy for hair remains largely unsubstantiated in scientific literature. We reviewed all pertinent scientific literature regarding the efficacy of biotin supplementation for hair growth and quality improvement, and we also investigated its popularity in society defined as a function of market analytics...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28625031/inadequate-dietary-%C3%AE-linolenic-acid-intake-among-indonesian-pregnant-women-is-associated-with-lower-newborn-weights-in-urban-jakarta
#17
Dudung Angkasa, Victor Tambunan, Helda Khusun, Fiastuti Witjaksono, Rina Agustina
BACKGROUND: Omega-3 fatty acid intake during pregnancy has been confirmed to affect newborn birth outcomes in the developed world. However, the association between maternal omega-3 fatty acid intake and birth size is unknown in developing countries. OBJECTIVE: To examine the association of maternal omega-3 fatty acid intake with newborn birth size. METHODS AND STUDY DESIGN: A cross-sectional study was conducted, involving 282 pregnant women aged 19-40 years who had a gestational age of >32 weeks and received antenatal care at 10 health centres and one referral hospital in East Jakarta, Indonesia...
June 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28623042/corneocyte-lipid-envelope-cle-the-key-structure-for-skin-barrier-function-and-ichthyosis-pathogenesis
#18
REVIEW
Masashi Akiyama
Research on the genetic abnormalities and pathogenetic processes of ichthyoses has progressed remarkably, and many causative genes and molecules have been identified in ichthyoses and ichthyosis syndromes. Most of the genes/molecules causative of ichthyosis are associated with the barrier function of the stratum corneum, and defects in the skin barrier play important roles in the pathogenesis of various ichthyosis phenotypes. It has been elucidated that, of the ichthyosis-causative genes, ABCA12, ALOXE3, ALOX12B, CYP4F22, CERS3, ABHD5, PNPLA1 and ELOVL4 work in the formation of the corneocyte lipid envelope (CLE), a structure that is essential to sound skin barrier function...
June 8, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28621732/lipid-accumulation-in-hepg2-cells-is-attenuated-by-strawberry-extract-through-ampk-activation
#19
Tamara Y Forbes-Hernández, Francesca Giampieri, Massimiliano Gasparrini, Sadia Afrin, Luca Mazzoni, Mario D Cordero, Bruno Mezzetti, José L Quiles, Maurizio Battino
Regulation of lipid metabolism is essential for treatment and prevention of several chronic diseases such as obesity, diabetes, and cardiovascular diseases, which are responsible for most deaths worldwide. It has been demonstrated that the AMP-activated protein kinase (AMPK) has a direct impact on lipid metabolism by modulating several downstream-signaling components. The main objective of the present work was to evaluate the in vitro effect of a methanolic strawberry extract on AMPK and its possible repercussion on lipid metabolism in human hepatocellular carcinoma cells (HepG2)...
June 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28621445/nutritional-and-functional-bioactivity-value-of-selected-azorean-macroalgae-ulva-compressa-ulva-rigida-gelidium-microdon-and-pterocladiella-capillacea
#20
Lisete Paiva, Elisabete Lima, Ana Isabel Neto, Massimo Marcone, José Baptista
This study presents information on the biochemical composition (dry weight basis), nutritional aspects, and angiotensin I-converting enzyme (ACE) inhibitory properties of selected macroalgae (Ulva compressa, Ulva rigida, Gelidium microdon, and Pterocladiella capillacea) from Azores. Moisture content was very high (83.2% to 90.0% of fresh weight). Total dietary fiber (33.7% to 41.0%) that presented a good balance of both soluble and insoluble fibers (15.5% to 19.2% and 18.2% to 21.8%, respectively) was the most abundant component in these macroalgae...
June 16, 2017: Journal of Food Science
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