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Essential fatty acids

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https://www.readbyqxmd.com/read/28214879/thiamine-deprivation-produces-a-liver-atp-deficit-and-metabolic-and-genomic-effects-in-mice-findings-are-parallel-to-those-of-biotin-deficiency-and-have-implications-for-energy-disorders
#1
Alain de J Hernandez-Vazquez, Josue Andres Garcia-Sanchez, Elizabeth Moreno-Arriola, Ana Salvador-Adriano, Daniel Ortega-Cuellar, Antonio Velazquez-Arellano
Thiamine is one of several essential cofactors for ATP generation. Its deficiency, like in beriberi and in the Wernicke-Korsakoff syndrome, has been studied for many decades. However, its mechanism of action is still not completely understood at the cellular and molecular levels. Since it acts as a coenzyme for dehydrogenases of pyruvate, branched-chain keto acids, and ketoglutarate, its nutritional privation is partly a phenocopy of inborn errors of metabolism, among them maple syrup urine disease. In the present paper, we report metabolic and genomic findings in mice deprived of thiamine...
February 18, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28214701/leachate-flush-strategies-for-managing-volatile-fatty-acids-accumulation-in-leach-bed-reactors
#2
S Riggio, M Torrijos, G Vives, G Esposito, E D van Hullebusch, J P Steyer, R Escudié
In anaerobic leach-bed reactors (LBRs) co-digesting an easily- and a slowly-degradable substrate, the importance of the leachate flush both on extracting volatile fatty acids (VFAs) at the beginning of newly-started batches and on their consumption in mature reactors was tested. Regarding VFA extraction three leachate flush-rate conditions were studied: 0.5, 1 and 2Lkg(-1)TSd(-1). Results showed that increasing the leachate flush-rate during the acidification phase is essential to increase degradation kinetics...
January 30, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28213094/aspirin-triggered-resolvin-d1-modified-materials-promote-the-accumulation-of-pro-regenerative-immune-cell-subsets-and-enhance-vascular-remodeling
#3
Mary Caitlin P Sok, Maxianne C Tria, Claire E Olingy, Cheryl L San Emeterio, Edward A Botchwey
: Many goals in tissue engineering rely on modulating cellular localization and polarization of cell signaling, including the inhibition of inflammatory infiltrate, facilitation of inflammatory cell egress, and clearance of apoptotic cells. Omega-3 polyunsaturated fatty acid-derived resolvins are gaining increasing recognition for their essential roles in inhibition of neutrophil invasion into inflamed tissue and promotion of macrophage phagocytosis of cellular debris as well as their egress to the lymphatics...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212191/endothelial-cell-metabolism-an-update-anno-2017
#4
Laure-Anne Teuwen, Nihed Draoui, Charlotte Dubois, Peter Carmeliet
PURPOSE OF REVIEW: Endothelial cell metabolism has recently emerged as an important coregulator of angiogenesis and is therefore a promising new target in various angiogenesis-associated illnesses, like cancer. In this review, we discuss recent insights in endothelial cell metabolism in both physiological and pathological conditions and discuss possible translational implications. RECENT FINDINGS: Two metabolic pathways that determine the performance of endothelial cells are glycolysis and fatty acid oxidation (FAO)...
February 15, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28210506/combined-supplementation-of-choline-and-docosahexaenoic-acid-during-pregnancy-enhances-neurodevelopment-of-fetal-hippocampus
#5
Huban Thomas Rajarethnem, Kumar Megur Ramakrishna Bhat, Malsawmzuali Jc, Siva Kumar Gopalkrishnan, Ramesh Babu Mugundhu Gopalram, Kiranmai Sesappa Rai
Choline is an essential nutrient for humans which plays an important role in structural integrity and signaling functions. Docosahexaenoic acid (DHA) is a polyunsaturated fatty acid, highly enriched in cell membranes of the brain. Dietary intake of choline or DHA alone by pregnant mothers directly affects fetal brain development and function. But no studies show the efficacy of combined supplementation of choline and DHA on fetal neurodevelopment. The aim of the present study was to analyze fetal neurodevelopment on combined supplementation of pregnant dams with choline and DHA...
2017: Neurology Research International
https://www.readbyqxmd.com/read/28209162/fatty-acid-and-cholesterol-profiles-hypocholesterolemic-atherogenic-and-thrombogenic-indices-of-broiler-meat-in-the-retail-market
#6
Youssef A Attia, Mohammed A Al-Harthi, Mohamed A Korish, Mohamed M Shiboob
BACKGROUND: Broiler meat is an essential source of food due to its favourable effects on human health derived from its protein, fats, minerals, vitamins and its bioactive components. METHODS: A total of 90 carcasses were collected from the retail market in Jeddah city, Saudi Arabia during April, May and June 2014 to determine the effects of meat type (frozen vs. fresh) and sources within fresh types (A, B, C) vs. frozen types (D, E and F) on their fatty acid profiles, cholesterol, their hypocholesterolemic, atherogenic and thrombogenic indices, and on their antioxidants' status...
February 16, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28205597/the-influence-of-accd5-on-accd6-carboxyltransferase-essentiality-in-pathogenic-and-non-pathogenic-mycobacterium
#7
Jakub Pawelczyk, Albertus Viljoen, Laurent Kremer, Jaroslaw Dziadek
Malonyl-coenzyme A (CoA) is a crucial extender unit for the synthesis of mycolic and other fatty acids in mycobacteria, generated in a reaction catalyzed by acetyl-CoA carboxylase. We previously reported on the essentiality of accD6Mtb encoding the functional acetyl-CoA carboxylase subunit in Mycobacterium tuberculosis. Strikingly, the homologous gene in the fast-growing, non-pathogenic Mycobacterium smegmatis - (accD6Msm) appeared to be dispensable, and its deletion did not influence the cell lipid content...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202545/the-basis-for-acyl-specificity-in-the-tafazzin-reaction
#8
Michael Schlame, Yang Xu, Mindong Ren
Tafazzin is a mitochondrial enzyme that transfers fatty acids from phospholipids to lysophospholipids. Mutations in tafazzin cause abnormal molecular species of cardiolipin and the clinical phenotype of Barth syndrome. However, the mechanism by which tafazzin creates acyl specificity has been controversial. We have shown that the lipid phase state can produce acyl specificity in the tafazzin reaction but others have reported that tafazzin itself carries enzymatic specificity. To resolve this issue, we replicated and expanded the controversial experiments, i...
February 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28196402/pimelic-acid-the-first-precursor-of-the-bacillus-subtilis-biotin-synthesis-pathway-exists-as-the-free-acid-and-is-assembled-by-fatty-acid-synthesis
#9
Miglena Manandhar, John E Cronan
Biotin synthetic pathways are readily separated into two stages, synthesis of the seven carbon α, ω-dicarboxylic acid pimelate moiety and assembly of the fused heterocyclic rings. The biotin pathway genes responsible for pimelate moiety synthesis vary widely among bacteria whereas the ring synthesis genes are highly conserved. Bacillus subtilis seems to have redundant genes, bioI and bioW, for generation of the pimelate intermediate. Largely consistent with previous genetic studies we found that deletion of bioW caused a biotin auxotrophic phenotype whereas deletion of bioI did not...
February 14, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28195642/functional-mucous-layer-and-healing-of-proximal-colonic-anastomoses-in-an-experimental-model
#10
J W A M Bosmans, A C H M Jongen, G M H Birchenough, E E L Nyström, M J J Gijbels, J P M Derikx, N D Bouvy, G C Hansson
BACKGROUND: Anastomotic leakage (AL) is the most dreaded complication after colorectal surgery, causing high morbidity and mortality. Mucus is a first line of defence against external factors in the gastrointestinal tract. In this study, the structural mucus protein Muc2 was depleted in genetically engineered mice and the effect on healing of colonic anastomoses studied in an experimental model. METHODS: Mice of different Muc2 genotypes were used in a proximal colonic AL model...
February 13, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28194272/fatty-acid-content-in-epididymal-fluid-and-spermatozoa-during-sperm-maturation-in-dogs
#11
Daniel S Ramos Angrimani, Marcilio Nichi, João Diego A Losano, Cristina F Lucio, Gisele A Lima Veiga, Márcia V M Junqueira Franco, Camila I Vannucchi
BACKGROUND: During sperm maturation, there is a reorganization of fatty acids from plasmatic membrane of the spermatozoa, which allows higher membrane integrity and acquisition of sperm motility. However, the fatty acid profile during sperm maturation remains unclear in dogs. Thus, the aim of this study was to identify the fatty acids from the epididymal spermatozoa and plasma during the sperm maturation, and observed changes in the motility and plasmatic membrane parameters. Twenty one adult dogs were used, subsequently to bilateral orchiectomy and epididymal storage, sperm samples were collected from the different segments of the epididymis...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28189073/lower-levels-of-persistent-organic-pollutants-metals-and-the-marine-omega-3-fatty-acid-dha-in-farmed-compared-to-wild-atlantic-salmon-salmo-salar
#12
Anne-Katrine Lundebye, Erik-Jan Lock, Josef D Rasinger, Ole Jakob Nøstbakken, Rita Hannisdal, Egil Karlsbakk, Vidar Wennevik, Abdullah S Madhun, Lise Madsen, Ingvild Eide Graff, Robin Ørnsrud
Contaminants and fatty acid levels in farmed- versus wild Atlantic salmon have been a hot topic of debate in terms of food safety. The present study determined dioxins (polychlorinated dibenzo-p-dioxin and dibenzofuran), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), organochlorine pesticides (OCPs), metals and fatty acids in wild and farmed Atlantic salmon. Contaminant levels of dioxins, PCBs, OCPs (DDT, dieldrin, lindane, chlordane, Mirex, and toxaphene), and mercury were higher in wild salmon than in farmed salmon, as were the concentrations of the essential elements selenium, copper, zinc and iron, and the marine omega-3 fatty acid docosahexaenoic acid (DHA)...
February 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28186827/exploration-of-the-perceived-and-actual-benefits-of-omega-3-fatty-acids-and-the-impact-of-fads1-and-fads2-genetic-information-on-dietary-intake-and-blood-levels-of-epa-and-dha
#13
Kaitlin Roke
From a global health perspective, increased intake of omega-3 fatty acids (FAs), in particular eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are beneficial for human health. However, the consumption of EPA- and DHA-rich foods such as fatty fish is low in the Western diet. Therefore, finding new ways to motivate people to increase their consumption of omega-3 FAs is essential. To find effective ways to motivate individuals, understanding people's awareness of omega-3 FAs and how they obtain their knowledge about nutrition and health is critical...
February 10, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28185379/feed-degradability-rumen-fermentation-and-blood-metabolites-in-response-to-essential-oil-addition-to-fistulated-non-lactating-dairy-cow-diets
#14
Wisitiporn Suksombat, Atitthan Nanon, Chayapol Meeprom, Pipat Lounglawan
The effects of essential oils (EOs) on ruminal nutrient disappearance, rumen fermentation and blood metabolites in fistulated non-lactating dairy cows were studied. Four fistulated non-lactaing dairy cows were used in a 4 × 4 Latin square design; the experiment consisted of four periods of 21 days in each period, with the first 14 days for adaptation followed by 7 days of measurement period. Animals were fed 3 kg/day of 21% crude protein (CP) concentrate and ad libitum corn silage. Treatments were: (i) control; (ii) 2 mL Allicin/cow/day; (iii) 2 mL zingiberene/cow/day; and (iv) 2 mL citral/cow/day...
February 9, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28183305/controlling-of-growth-performance-lipid-deposits-and-fatty-acid-composition-of-chicken-meat-through-a-probiotic-lactobacillus-johnsonii-during-subclinical-clostridium-perfringens-infection
#15
Hesong Wang, Xueqin Ni, Lei Liu, Dong Zeng, Jing Lai, Xiaodan Qing, Guangyao Li, Kangcheng Pan, Bo Jing
BACKGROUND: Meat is considered as a major source of polyunsaturated fatty acid (PUFA) which is essential for humans, therefore its lipid level and fatty acid composition have drawn great attention. As no clinical sign can be found in chicks subclinically infected by Clostridium perfringens (CP), the meat may be purchased and eaten. The objective of the present study was to determine whether Lactobacillus johnsonii (LJ) can control the CP-caused impact on growth, lipid levels, fatty acid composition and other flavor or nutritional quality in the meat...
February 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28181382/selected-mutations-reveal-new-intermediates-in-the-biosynthesis-of-mupirocin-and-the-thiomarinol-antibiotics
#16
Shu-Shan Gao, Luoyi Wang, Zhongshu Song, Joanne Hothersall, Elton R Stevens, Jack Connolly, Peter J Winn, Russell J Cox, Matthew P Crump, Paul R Race, Christopher M Thomas, Thomas J Simpson, Christine L Willis
Thiomarinol and mupirocin are assembled on similar polyketide/fatty acid backbones and exhibit potent antibiotic activity against methicillin-resistant Staphylococcus aureus (MRSA). They both contain a tetrasubstituted tetrahydropyran (THP) ring that is essential for biological activity. Mupirocin is a mixture of pseudomonic acids (PAs). Isolation of the novel compound mupirocin P, which contains a 7-hydroxy-6-keto-substituted THP, from a ΔmupP strain and chemical complementation experiments confirm that the first step in the conversion of PA-B into the major product PA-A is oxidation at the C6 position...
February 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28178563/lipid-metabolism-fuels-cancer-s-spread
#17
Zhuo Li, Yibin Kang
The ability to prospectively identify metastasis-initiating cells is essential for developing new anti-metastasis therapeutics. In a recent issue of Nature, Pascual et al. (2017) demonstrate that the fatty acid receptor CD36 marks a subpopulation of cancer cells with unique metastasis-initiating potential, highlighting a key role of lipid metabolism in metastatic colonization.
February 7, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28178022/the-impact-of-essential-fatty-acid-b-vitamins-vitamin-c-magnesium-and-zinc-supplementation-on-stress-levels-in-women-a-systematic-review
#18
Delia McCabe, Karolina Lisy, Craig Lockwood, Marc Colbeck
BACKGROUND: Women juggling multiple roles in our complex society are increasingly experiencing psychological stress. Dietary supplementation to manage stress is widespread despite limited supporting evidence. A systematic review of the available literature was undertaken to investigate the efficacy of specific dietary supplements in managing female stress and anxiety. OBJECTIVES: To identify the impact of essential fatty acids (EFAs), B vitamins, vitamin C, magnesium and/or zinc, consumed as dietary supplements to the daily diet, on female stress and anxiety levels...
February 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28166085/when-the-laughing-stops-subacute-combined-spinal-cord-degeneration-caused-by-laughing-gas-use
#19
Annemiek Buizert, Ruby Sharma, Hille Koppen
Here we describe a case of subacute combined spinal cord degeneration caused by nitrous oxide (N2O, laughing gas) use. Because of its euphoric effects, the use of N2O has become increasingly popular in recent years. Unfortunately, the use of N2O leads to inactivation of vitamin B12. Vitamin B12 plays an essential role in the synthesis and maintenance of myelin, a fatty substance that surrounds nerve cells and is crucial for their functioning. Deficiency of vitamin B12 could typically result in degeneration of posterior and lateral columns of the spinal cord...
February 3, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28165765/classification-of-lipolytic-enzymes-and-their-biotechnological-applications-in-the-pulping-industry
#20
L Ramnath, B Sithole, R Govinden
In the pulp and paper industry, during the manufacturing process, the agglomeration of pitch particles (composed of triglycerides, fatty acids, and esters) leads to the formation of black pitch deposits in the pulp and on machinery, which impacts on the process and pulp quality. Traditional methods of pitch prevention and treatment are no longer feasible due to environmental impact and cost. Consequently, there is a need for more efficient and environmentally friendly approaches. The application of lipolytic enzymes, such as lipases and esterases, could be the sustainable solution to this problem...
October 27, 2016: Canadian Journal of Microbiology
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