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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
#1
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/28646314/ozone-and-desiccation-tolerance-in-chlorolichens-are-intimately-connected-a-case-study-based-on-two-species-with-different-ecology
#2
Stefano Bertuzzi, Elisa Pellegrini, Fabio Candotto Carniel, Guido Incerti, Giacomo Lorenzini, Cristina Nali, Mauro Tretiach
Tropospheric ozone (O3) causes severe damage to many vascular plants but not to lichens. It was recently suggested that this may be due to their high levels of natural defences against the oxidative bursts associated to their fluctuating water content. In this study, the combined effects of watering regime (with or without a daily spray of distilled water), air relative humidity (20 ± 5 vs. 80 ± 5% RH) and O3 (250 vs. 0 ppb, 5 h day(-1) for 2 weeks) were monitored in two chlorolichens with different ecology, Parmotrema perlatum and Xanthoria parietina...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28646239/intake-of-omega-3-fatty-acids-contributes-to-bone-mineral-density-at-the-hip-in-a-younger-japanese-female-population
#3
T Kuroda, H Ohta, Y Onoe, N Tsugawa, M Shiraki
This study investigated the relationships between intakes of polyunsaturated fatty acids, omega-3 fatty acids, and omega-6 fatty acids and bone mineral density in Japanese women aged 19 to 25 years. Intakes of omega-3 fatty acids (n-3) were positively associated with peak bone mass at the hip. INTRODUCTION: Lifestyle factors such as physical activity and nutrition intake are known to optimize the peak bone mass (PBM). Recently, intake of polyunsaturated fatty acids (PUFAs) has been reported to contribute to bone metabolism...
June 23, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28645790/vitamin-e-deficiency-during-embryogenesis-in-zebrafish-causes-lasting-metabolic-and-cognitive-impairments-despite-refeeding-adequate-diets
#4
Melissa McDougall, Jaewoo Choi, Lisa Truong, Robert Tanguay, Maret G Traber
Vitamin E (α-tocopherol; VitE) is a lipophilic antioxidant required for normal embryonic development in vertebrates, but the long-term effects of embryonic VitE deficiency, and whether they are ameliorated by feeding VitE-adequate diets, remain unknown. We addressed these questions using a zebrafish (Danio rerio) model of developmental VitE deficiency followed by dietary remediation. Adult zebrafish maintained on VitE-deficient (E-) or sufficient (E+) diets were spawned to obtained E- and E+ embryos, respectively, which we evaluated up to 12 days post-fertilization (dpf)...
June 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28644559/evaluating-dihydroazulene-vinylheptafulvene-photoswitches-for-solar-energy-storage-applications
#5
Zhihang Wang, Jonas Udmark, Karl Börjesson, Rita Rodrigues, Anna Roffey, Maria Abrahamsson, Mogens B Nielsen, Kasper Moth-Poulsen
Efficient solar energy storage is a key challenge in striving towards a sustainable future. For this reason, molecules capable of solar energy storage and release through valence isomerization, so-called Molecular Solar Thermal energy storage (MOST), have been investigated. Here, we evaluate the energy storage potential through the photoconversion of the dihydroazulene-vinylheptafulvene (DHA/VHF) photo-thermal couple. The robust nature of this system has been determined through multiple energy storage and release cycles at elevated temperatures in three different solvents...
June 23, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28644407/cotton-ascorbate-oxidase-promotes-cell-growth-in-cultured-tobacco-bright-yellow-2-cells-through-generation-of-apoplast-oxidation
#6
Rong Li, Shan Xin, Chengcheng Tao, Xiang Jin, Hongbin Li
Ascorbate oxidase (AO) plays an important role in cell growth through the modulation of reduction/oxidation (redox) control of the apoplast. Here, a cotton (Gossypium hirsutum) apoplastic ascorbate oxidase gene (GhAO1) was obtained from fast elongating fiber tissues. GhAO1 belongs to the multicopper oxidase (MCO) family and includes a signal peptide and several transmembrane regions. Analyses of quantitative real-time polymerase chain reaction (QRT-PCR) and enzyme activity showed that GhAO1 was expressed abundantly in 15-day post-anthesis (dpa) wild-type (WT) fibers in comparison with fuzzless-lintless (fl) mutant ovules...
June 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28642762/arbuscular-mycorrhiza-augments-arsenic-tolerance-in-wheat-triticum-aestivum-l-by-strengthening-antioxidant-defense-system-and-thiol-metabolism
#7
Surbhi Sharma, Garima Anand, Neeraja Singh, Rupam Kapoor
Arbuscular mycorrhiza (AM) can help plants to tolerate arsenic (As) toxicity. However, plant responses are found to vary with the host plant and the AM fungal species. The present study compares the efficacy of two AM fungi Rhizoglomus intraradices (M1) and Glomus etunicatum (M2) in amelioration of As stress in wheat (Triticum aestivum L. var. HD-2967). Mycorrhizal (M) and non-mycorrhizal (NM) wheat plants were subjected to four levels of As (0, 25, 50, and 100 mg As kg(-1) soil). Although As additions had variable effects on the percentage of root colonized by the two fungal inoculants, each mycobiont conferred benefits to the host plant...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642110/pedf-plus-dha-modulate-inflammation-and-stimulate-nerve-regeneration-after-hsv-1-infection
#8
Jiucheng He, Donna Neumann, Azucena Kakazu, Thang Luong Pham, Farhana Musarrat, M Soledad Cortina, Haydee E P Bazan
Herpes simplex virus type-1 (HSV-1) infection leads to impaired corneal sensation and, in severe cases, to corneal ulceration, melting and perforation. Here, we explore the potential therapeutic action of pigment epithelial-derived factor (PEDF) plus docosahexaenoic acid (DHA) on corneal inflammation and nerve regeneration following HSV-1 infection. Rabbits inoculated with 100,000 PFU/eye of HSV-1 strain 17Syn+ were treated with PEDF + DHA or vehicle. PEDF + DHA treatment resulted in a biphasic immune response with stronger infiltration of CD4+T cells, neutrophils and macrophages at 7-days post-treatment (p...
June 19, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28640223/non-targeted-metabolomics-analysis-of-the-effects-of-tyrosine-kinase-inhibitors-sunitinib-and-erlotinib-on-heart-muscle-liver-and-serum-metabolism-in-vivo
#9
Brian C Jensen, Traci L Parry, Wei Huang, Amro Ilaiwy, James R Bain, Michael J Muehlbauer, Sara K O'Neal, Cam Patterson, Gary L Johnson, Monte S Willis
Background: More than 90 tyrosine kinases have been implicated in the pathogenesis of malignant transformation and tumor angiogenesis. Tyrosine kinase inhibitors (TKIs) have emerged as effective therapies in treating cancer by exploiting this kinase dependency. The TKI erlotinib targets the epidermal growth factor receptor (EGFR), whereas sunitinib targets primarily vascular endothelial growth factor receptor (VEGFR) and platelet-derived growth factor receptor (PDGFR).TKIs that impact the function of non-malignant cells and have on- and off-target toxicities, including cardiotoxicities...
June 22, 2017: Metabolites
https://www.readbyqxmd.com/read/28634756/a-high-throughput-targeted-and-non-targeted-method-for-the-analysis-of-microcystins-and-anatoxin-a-using-on-line-solid-phase-extraction-coupled-to-liquid-chromatography-quadrupole-time-of-flight-high-resolution-mass-spectrometry
#10
Xavier Ortiz, Eva Korenkova, Karl J Jobst, Karen A MacPherson, Eric J Reiner
Microcystins are cyclic heptapeptide hepatotoxins produced by cyanobacteria in freshwater. Sample preparation for the analysis of these cyanotoxins in water from algal blooms can take up to several days due to the matrix complexity and the low detection limits required to comply with current legislation. Moreover, there is a large number of unknown microcystins that could potentially exist in the environment resulting from different amino acid substitutions into the microcystin skeletal structure. To tackle these problems, the present study involved the development of a high throughput method based on on-line solid phase extraction coupled to liquid chromatography that could provide quantitative results for 12 microcystin variants (LR, YR, RR, HtyR, HilR, WR, LW, LA, LF, LY, Dha(7)-LR, and Dha(7)-RR) and anatoxin-A in less than 3 h with detection limits between 0...
June 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28634391/two-alternative-pathways-for-docosahexaenoic-acid-dha-22-6n-3-biosynthesis-are-widespread-among-teleost-fish
#11
Angela Oboh, Naoki Kabeya, Greta Carmona-Antoñanzas, L Filipe C Castro, James R Dick, Douglas R Tocher, Oscar Monroig
Docosahexaenoic acid (DHA) plays important physiological roles in vertebrates. Studies in rats and rainbow trout confirmed that DHA biosynthesis proceeds through the so-called "Sprecher pathway", a biosynthetic process requiring a Δ6 desaturation of 24:5n-3 to 24:6n-3. Alternatively, some teleosts possess fatty acyl desaturases 2 (Fads2) that enable them to biosynthesis DHA through a more direct route termed the "Δ4 pathway". In order to elucidate the prevalence of both pathways among teleosts, we investigated the Δ6 ability towards C24 substrates of Fads2 from fish with different evolutionary and ecological backgrounds...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633686/polymorphisms-of-the-tnf-%C3%AE-gene-interact-with-plasma-fatty-acids-on-inflammatory-biomarker-profile-a-population-based-cross-sectional-study-in-s%C3%A3-o-paulo-brazil
#12
Erica Oki, Marina N Norde, Antônio A F Carioca, José M P Souza, Inar A Castro, Dirce M L Marchioni, Regina M Fisberg, Marcelo M Rogero
The aim of the present study was to investigate the relationship of four TNF-α SNP with inflammatory biomarkers and plasma fatty acids (FA), and the interaction among them in a population-based, cross-sectional study in São Paulo, Brazil. A total of 281 subjects, aged >19 and <60 years, participated in a cross-sectional, population-based study performed in Brazil. The following SNP spanning the TNF-α gene were genotyped: -238G/A (rs361525), -308G/A (rs1800629), -857C/T (rs1799724) and -1031T/C (rs1799964)...
June 21, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28632497/dha-reduces-oxidative-stress-following-hypoxia-ischemia-in-newborn-piglets-a-study-of-lipid-peroxidation-products-in-urine-and-plasma
#13
Marianne Ullestad Huun, Håvard T Garberg, Javier Escobar, Consuelo Chafer, Maximo Vento, Ingar M Holme, Ola Didrik Saugstad, Rønnaug Solberg
BACKGROUND: Lipid peroxidation mediated by reactive oxygen species is a major contributor to oxidative stress. Docosahexaenoic acid (DHA) has anti-oxidant and neuroprotective properties. Our objective was to assess how oxidative stress measured by lipid peroxidation was modified by DHA in a newborn piglet model of hypoxia-ischemia (HI). METHODS: Fifty-five piglets were randomized to (i) hypoxia, (ii) DHA, (iii) hypothermia, (iv) hypothermia+DHA or (v) sham. All groups but sham were subjected to hypoxia by breathing 8% O2...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28629180/bioavailability-of-dietary-omega-3-fatty-acids-added-to-a-variety-of-sausages-in-healthy-individuals
#14
Anton Köhler, Johanna Heinrich, Clemens von Schacky
A low Omega-3 Index (eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in erythrocytes) is associated with cardiac, cerebral, and other health issues. Intake of EPA and DHA, but not of alpha-linolenic acid (ALA), increases the Omega-3 Index. We investigated bioavailability, safety, palatability and tolerability of EPA and DHA in a novel source: a variety of sausages. We screened 96 healthy volunteers, and recruited 44 with an Omega-3 Index <5%. Participants were randomly assigned to receive a variety of sausages enriched with approximately 250 mg EPA and DHA per 80 g (n = 22) daily for 8 weeks, or matching placebo sausages (n = 22)...
June 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28628798/maternal-liver-docosahexaenoic-acid-dha-stores-are-increased-via-higher-serum-unesterified-dha-uptake-in-pregnant-long-evans-rats
#15
Adam H Metherel, Alex P Kitson, Anthony F Domenichiello, R J Scott Lacombe, Kathryn E Hopperton, Marc-Olivier Trépanier, Shoug M Alashmali, Lin Lin, Richard P Bazinet
Maternal docosahexaenoic acid (DHA, 22:6n-3) supplies the developing fetus during pregnancy; however, the mechanisms are unclear. We utilized pregnant rats to determine rates of DHA accretion, tissue unesterified DHA uptake and whole-body DHA synthesis-secretion. Female rats maintained on a DHA-free, 2% α-linolenic acid diet were either:1) sacrificed at 56 days for baseline measures, 2) mated and sacrificed at 14-18 days of pregnancy or 3) or sacrificed at 14-18 days as age-matched virgin controls. Maternal brain, adipose, liver and whole body fatty acid concentrations was determined for balance analysis, and kinetic modeling was used to determine brain and liver plasma unesterified DHA uptake and whole-body DHA synthesis-secretion rates...
June 1, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28626140/long-chain-polyunsaturated-fatty-acid-supplementation-improves-mood-in-elderly-japanese-men
#16
Hisanori Tokuda, Toshiaki Sueyasu, Hiroshi Kawashima, Hiroshi Shibata, Yoshihiko Koga
Although several studies have reported the effects of long-chain polyunsaturated fatty acid (LCPUFA) supplementation on the mood in healthy adults, the effects of LCPUFA on elderly individuals remain unclear. Thus, we hypothesized that LCPUFA supplementation improves mood in the elderly. To address this hypothesis, 115 elderly Japanese men aged 55-64 years were assigned and randomly allocated to the LCPUFA or placebo group. Participants received 4 weeks of supplementation with LCPUFAcontaining oil (docosahexaenoic acid (DHA) 300 mg/day, eicosapentaenoic acid (EPA) 100 mg/day, arachidonic acid (ARA) 120 mg/day) or a placebo oil...
June 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28625107/associations-between-omega-3-fatty-acids-and-25-oh-d-and-psychological-distress-among-inuit-in-canada
#17
Hans-Ragnar Skogli, Dominique Geoffroy, Hope A Weiler, Grethe S Tell, Laurence J Kirmayer, Grace M Egeland
BACKGROUND: Inuit in Canada have experienced dietary changes over recent generations, but how this relates to psychological distress has not been investigated. OBJECTIVE: To evaluate how nutritional biomarkers are related to psychological distress. DESIGN: A total of 36 communities in northern Canada participated in the International Polar Year Inuit Health Survey (2007-2008). Of 2796 households, 1901 (68%) participated; 1699 Inuit adults gave blood samples for biomarker analysis and answered the Kessler 6-item psychological distress questionnaire (K6)...
2017: International Journal of Circumpolar Health
https://www.readbyqxmd.com/read/28620184/transcriptomic-analysis-of-the-regulation-of-lipid-fraction-migration-and-fatty-acid-biosynthesis-in-schizochytrium-sp
#18
Lujing Ren, Xuechao Hu, Xiaoyan Zhao, Shenglan Chen, Yi Wu, Dan Li, Yadong Yu, Lingjun Geng, Xiaojun Ji, He Huang
Schizochytrium sp. is the main source of docosahexaenoic acid-rich oil, which is widely used in food additive and pharmaceutical industry. In this study, using RNA-seq, comparative transcriptomic analyses were performed at four stages of DHA fermentation by Schizochytrium sp to get potential genes related to cell transition from cell growth to lipid accumulation and then to lipid turnover. 1406, 385, 1384 differently expressed genes were identified by comparisons in pairs of S2 vs S1, S3 vs S2 and S4 vs S3...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619112/docosahexaenoic-acid-regulates-vascular-endothelial-cell-function-and-prevents-cardiovascular-disease
#19
REVIEW
Kazuo Yamagata
Docosahexaenoic acid (DHA) is present in high concentrations in salmon, herring, and trout. Epidemiologic studies have shown that high dietary consumption of these and other oily fish is associated with reduced rates of myocardial infarction, atherosclerosis, and other ischemic pathologies. Atherosclerosis is induced by inflammation and can lead to acute cardiovascular events and extensive plaque. DHA inhibits the development of inflammation in endothelial cells, alters the function and regulation of vascular biomarkers, and reduces cardiovascular risk...
June 15, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28617435/interaction-between-autophagy-and-senescence-is-required-for-dihydroartemisinin-to-alleviate-liver-fibrosis
#20
Zili Zhang, Zhen Yao, Shifeng Zhao, Jiangjuan Shao, Anping Chen, Feng Zhang, Shizhong Zheng
Autophagy and cellular senescence are stress responses essential for homeostasis. Therefore, they may represent new pharmacologic targets for drug development to treat diseases. In this study, we sought to evaluate the effect of dihydroartemisinin (DHA) on senescence of activated hepatic stellate cells (HSCs), and to further elucidate the underlying mechanisms. We found that DHA treatment induced the accumulation of senescent activated HSCs in rat fibrotic liver, and promoted the expression of senescence markers p53, p16, p21 and Hmga1 in cell model...
June 15, 2017: Cell Death & Disease
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