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https://www.readbyqxmd.com/read/28443847/the-impact-of-dietary-sn-2-palmitic-triacylglycerols-in-combination-with-docosahexaenoic-acid-or-arachidonic-acid-on-lipid-metabolism-and-host-faecal-microbiota-composition-in-sprague-dawley-rats
#1
Jianchun Wan, Songyou Hu, Jörg J Jacoby, Jie Liu, Yaqiong Zhang, Liangli Lucy Yu
Sn-2 palmitic acid triacylglycerols (sn2PA fat) and polyunsaturated fatty acids are thought to influence the metabolic status and intestinal bacterial population of the host. In this study, the impact of sn2PA fat in combination with DHA or ARA in the diet on lipid metabolism in the liver and faecal microbiota composition were investigated in rats fed diets containing sn2PA fat, 90% sn2PA fat + 10% DHA oil (wt%), or 90% sn2PA fat + 10% ARA oil (wt%). Tissue fatty acid composition was measured using gas chromatography (GC), whereas the faecal microbial composition was assessed using 16S rRNA high-throughput sequencing technology...
April 26, 2017: Food & Function
https://www.readbyqxmd.com/read/28433900/production-of-new-human-milk-fat-substitutes-by-enzymatic-acidolysis-of-microalgae-oils-from-nannochloropsis-oculata-and-isochrysis-galbana
#2
Yongjin He, Changyang Qiu, Zheng Guo, Jian Huang, Mingzi Wang, Bilian Chen
Human milk fat substitutes (HMFs) with four kinds of n-3 fatty acid for infant formula were firstly synthesized using triacylglycerols (TAGs) from Nannochloropsis oculata rich in PA at the sn-2 position and free fatty acids (FFAs) from Isochrysis galbana rich in n-3 polyunsaturated fatty acids (n-3 PUFAs-ALA/SDA/DHA) via solvent-free acidolysis with Novozym 435, Lipozyme 435, TL-IM and RM-IM as biocatalysts. The results show that the resulting HMFs contain total n-3 PUFA of 13.92-17.12% and PA of 59.38-68.13% at the sn-2 position under the optimal conditions (mole ratio FFAs/TAG 3:1, 60°C (Novozym 435 and Lipozyme TL-IM) and 50°C (Lipozyme 435 and RM-IM), lipase loading 10%, reaction time 24h)...
April 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28430435/cu-in-halide-perovskite-cihp-solar-absorbers
#3
Xin-Gang Zhao, Dongwen Yang, Yuanhui Sun, Tianshu Li, Lijun Zhang, Liping Yu, Alex Zunger
The long-term chemical instability and the presence of toxic Pb in otherwise stellar solar absorber APbX3 made of organic molecules on the A site and halogens for X have hindered their large-scale commercialization. Previously explored ways to achieve Pb-free halide perovskites involved replacing Pb(2+) with other similar M(2+) cations in ns(2) electron configuration, e.g., Sn(2+) or by Bi(3+) (plus Ag(+)), but unfortunately this showed either poor stability (M = Sn) or weakly absorbing oversized indirect gaps (M = Bi), prompting concerns that perhaps stability and good optoelectronic properties might be contraindicated...
April 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28416864/synthesis-of-structured-lipids-containing-behenic-acid-from-fully-hydrogenated-crambe-abyssinica-oil-by-enzymatic-interesterification
#4
Marilene D M Morselli Ribeiro, Chiu Chih Ming, Thiago I B Lopes, Renato Grimaldi, Anita J Marsaioli, Lireny A G Gonçalves
Low-calorie structured lipids (SLs) rich in behenic and oleic acids were produced by enzymatic (EI) and chemical interesterification (CI) of high oleic sunflower oil and fully hydrogenated Crambe abyssinica oil in proportions of 60:40, 50:50, 40:60 and 30:70 (w/w), respectively. The immobilized lipase from Thermomyces lanuginosus (Lipozyme TL IM) was used for 3 h at 70 °C at a dosage of 7% (w/w) free of organic solvents. The original blend (BE) and the reaction products were evaluated for their fatty acid (FA) and triacylglycerols (TAG) compositions, solid fat contents, thermal analysis, regiospecific distribution of the FA, microstructure and polymorphism...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28392275/exploring-the-influence-of-indololactone-structure-on-selectivity-for-binding-to-the-c1-domains-of-pkc%C3%AE-pkc%C3%AE%C2%B5-and-rasgrp
#5
Eleonora Elhalem, Lucía Gandolfi Donadío, Xiaoling Zhou, Nancy E Lewin, Lia C Garcia, Christopher C Lai, James A Kelley, Megan L Peach, Peter M Blumberg, María J Comin
C1 domain-containing proteins, such as protein kinase C (PKC), have a central role in cellular signal transduction. Their involvement in many diseases, including cancer, cardiovascular disease, and immunological and neurological disorders has been extensively demonstrated and has prompted a search for small molecules to modulate their activity. By employing a diacylglycerol (DAG)-lactone template, we have been able to develop ultra potent analogs of diacylglycerol with nanomolar binding affinities approaching those of complex natural products such as phorbol esters and bryostatins...
March 10, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28382076/multicenter-single-arm-phase-iv-study-of-combined-aspirin-and-high-dose-ivig-sn-therapy-for-pediatric-patients-with-kawasaki-disease
#6
Kyung Lim Yoon, Hae Yong Lee, Jeong Jin Yu, Jae Young Lee, Mi Young Han, Ki Yong Kim, June Huh
BACKGROUND AND OBJECTIVES: Intravenous immunoglobulin-SN (IVIG-SN) is a new human immunoglobulin product. Its safety is ensured by pathogen-elimination steps comprising solvent/detergent treatment and a nanofiltration process. This multicenter clinical study was designed to evaluate the efficacy and safety of combined aspirin and high-dose IVIG-SN therapy in pediatric patients with Kawasaki disease (KD). SUBJECTS AND METHODS: We evaluated coronary artery lesions (CALs) at 2 and 7 weeks after administering IVIG-SN; total fever duration; and variations in erythrocyte sedimentation rate, N-terminal pro B-type natriuretic peptide or B-type natriuretic peptide, and creatine kinase-myocardial band level before and after treatment with IVIG-SN (2 g/kg)...
March 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28362012/facile-synthesis-and-characterization-of-a-sno2-modified-lini0-5mn1-5o4-high-voltage-cathode-material-with-superior-electrochemical-performance-for-lithium-ion-batteries
#7
Feng Ma, Fushan Geng, Anbao Yuan, Jiaqiang Xu
A thin-layer-SnO2 modified LiNi0.5Mn1.5O4@SnO2 material is synthesized via a facile synthetic approach. It is physically and electrochemically characterized as a high-voltage lithium ion battery cathode and compared to the pristine LiNi0.5Mn1.5O4 material prepared under similar conditions. The two materials are proved to be crystals of a well-defined disordered spinel phase with the morphology of aggregates of micron/submicron polyhedral particles. The Mn(3+) ions and the inactive NixLiyO phase in the LiNi0...
April 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28358327/coenzyme-a-independent-transacylation-system-possible-involvement-of-phospholipase-a2-in-transacylation
#8
REVIEW
Atsushi Yamashita, Yasuhiro Hayashi, Naoki Matsumoto, Yoko Nemoto-Sasaki, Takanori Koizumi, Yusuke Inagaki, Saori Oka, Takashi Tanikawa, Takayuki Sugiura
The coenzyme A (CoA)-independent transacylation system catalyzes fatty acid transfer from phospholipids to lysophospholipids in the absence of cofactors such as CoA. It prefers to use C20 and C22 polyunsaturated fatty acids such as arachidonic acid, which are esterified in the glycerophospholipid at the sn-2 position. This system can also acylate alkyl ether-linked lysophospholipids, is involved in the enrichment of arachidonic acid in alkyl ether-linked glycerophospholipids, and is critical for the metabolism of eicosanoids and platelet-activating factor...
March 30, 2017: Biology
https://www.readbyqxmd.com/read/28338861/assessment-of-direct-interaction-between-cd36-and-an-oxidized-glycerophospholipid-species
#9
Satoshi Tsuzuki, Masayuki Yamasaki, Yuki Kozai, Tatsuya Sugawara, Yuki Manabe, Kazuo Inoue, Tohru Fushiki
SUMMARYCluster of differentiation 36 (CD36) is a transmembrane protein that recognizes multiple diverse ligands. It is believed that (i) oxidized glycerophosphocholine species having a terminal γ-hydroxyl(or oxo)-α,β-unsaturated carbonyl on the sn-2 acyl group (oxGPCCD36), which can occur on the surface of lipoprotein particles, serve as high-affinity ligands for CD36, and (ii) the amino acid 150-168 of CD36 (CD36150-168) is responsible for recognizing oxGPCCD36. However, it remains uncertain whether CD36150-168 directly interacts with oxGPCCD36 alone...
March 14, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28332626/decreased-16-0-20-4-phosphatidylinositol-level-in-the-post-mortem-prefrontal-cortex-of-elderly-patients-with-schizophrenia
#10
Junya Matsumoto, Hiroki Nakanishi, Yasuto Kunii, Yuki Sugiura, Dai Yuki, Akira Wada, Mizuki Hino, Shin-Ichi Niwa, Takeshi Kondo, Michihiko Waki, Takahiro Hayasaka, Noritaka Masaki, Hiroyasu Akatsu, Yoshio Hashizume, Sakon Yamamoto, Shinji Sato, Takehiko Sasaki, Mitsutoshi Setou, Hirooki Yabe
The etiology of schizophrenia includes phospholipid abnormalities. Phospholipids are bioactive substances essential for brain function. To analyze differences in the quantity and types of phospholipids present in the brain tissue of patients with schizophrenia, we performed a global analysis of phospholipids in multiple brain samples using liquid chromatography electrospray ionization mass/mass spectrometry (LC-ESI/MS/MS) and imaging mass spectrometry (IMS). We found significantly decreased 16:0/20:4-phosphatidylinositol (PI) levels in the prefrontal cortex (PFC) in the brains from patients with schizophrenia in the LC-ESI/MS/MS, and that the 16:0/20:4-PI in grey matter was most prominently diminished according to the IMS experiments...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325849/phospholipase-d%C3%AE-enhances-diacylglycerol-flux-into-triacylglycerol
#11
Wenyu Yang, Geliang Wang, Jia Li, Philip David Bates, Xuemin Wang, Douglas K Allen
Plant seeds are the primary source of triacylglycerols (TAG) for food, feed, fuel, and industrial applications. As TAG is produced from diacylglycerol (DAG) successful engineering strategies to enhance TAG levels have focused on the conversion of DAG to TAG. However, the production of TAG can be limited by flux through the enzymatic reactions that supply DAG. In this study, two Arabidopsis phospholipase Dζ genes (AtPLDζ1 and AtPLDζ2) were co-expressed in Camelina sativa to test whether the conversion of phosphatidylcholine (PC) to DAG impacts TAG levels in seeds...
March 21, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28325847/specialized-diacylglycerol-acyltransferase-contributes-to-extreme-fatty-acid-content-of-cuphea-seed-oil
#12
Umidjon Iskandarov, Jillian E Silva, Hae Jin Kim, Mariette Andersson, Rebecca E Cahoon, Keithanne Mockaitis, Edgar B Cahoon
Seed oils of many Cuphea sp. contain >90% of medium-chain fatty acids, such as decanoic acid (10:0). These seed oils, which are among the most compositionally variant in the plant kingdom, arise from specialized fatty acid biosynthetic enzymes and specialized acyltransferases. These include lysophosphatidic acid acyltransferases (LPAT) and diacylglycerol acyltransferases (DGAT) that are required for successive acylation of medium-chain fatty acids in the sn-2 and sn-3 positions of seed triacylglycerols (TAGs)...
March 21, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28317774/development-of-an-up-grading-process-to-produce-mlm-structured-lipids-from-sardine-discards
#13
R Morales-Medina, M Munio, A Guadix, E M Guadix
The aim of the work was to produce MLM structured lipids with caprylic acid (M) as medium chain fatty acid located at the external bonds of the glycerol backbone and concentrated polyunsaturated fatty acids (L) from sardine discards (Sardine pilchardus) in the central bond of the glycerol. To that end, the following steps were conducted: (i) fish oil extraction, (ii) Omega-3 free fatty acids (FFA) concentration (low temperature winterization), (iii) two-steps enzymatic esterification and (iv) triacylglycerols (TAG) purification (liquid column chromatography)...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28292473/placental-dimethyl-acetal-fatty-acid-derivatives-are-elevated-in-preeclampsia
#14
M Brien, L Berthiaume, I Rudkowska, P Julien, J F Bilodeau
Preeclampsia (PE) was shown to affect the placental content and the transfer of polyunsaturated fatty acids (PUFA) to the fetus. Plasmalogens, a type of phospholipids with a vinyl-ether link at the sn-1 position, play an antioxidant role and are specifically enriched in PUFA at the sn-2 position. In this study, we characterized plasmalogen-derived dimethyl acetal (DMA) fatty acid derivatives, 16:0 DMA, 18:0 DMA, 9c-/11c-18:1 DMA and PUFA in the placenta of normotensive (n = 20) and PE (n = 20) pregnancies, according to the sampling site: peri-insertion or periphery...
March 2017: Placenta
https://www.readbyqxmd.com/read/28274449/covalent-immobilization-of-lipase-onto-aminopropyl-functionalized-hydroxyapatite-encapsulated-%C3%AE-fe2o3-nanoparticles-a-magnetic-biocatalyst-for-interesterification-of-soybean-oil
#15
Wenlei Xie, Xuezhen Zang
Hydroxyapatite-encapsulated γ-Fe2O3 nanoparticles were prepared, and lipase from Candida rugosa was then covalently bound onto the magnetic materials via covalent linkages. The magnetic carrier and immobilized lipase were characterized by enzyme activity assays, XRD, FT-IR, TEM, VSM and N2 adsorption-desorption techniques. Results demonstrated that γ-Fe2O3 nanoparticles were coated with the hydroxyapatite, and the lipase was indeed tethered to the magnetic carriers without damage to their structure. The immobilized lipase showed a strong magnetic responsiveness and displayed high catalytic activities towards the interesterification of soybean oil...
July 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28262673/formation-mechanisms-of-fe3-xsnxo4-by-a-chemical-vapor-transport-cvt-process
#16
Zijian Su, Yuanbo Zhang, Bingbing Liu, Yingming Chen, Guanghui Li, Tao Jiang
Our former study reported that Fe-Sn spinel (Fe3-xSnxO4) was easily formed when SnO2 and Fe3O4 were roasted under CO-CO2 atmosphere at 900-1100 °C. However, the formation procedure is still unclear and there is a lack of theoretical research on the formation mechanism of the Fe-Sn spinel. In this work, the reaction mechanisms between SnO2 and Fe3O4 under CO-CO2 atmosphere were determined using XRD, VSM, SEM-EDS, XPS, etc. The results indicated that the formation of Fe3-xSnxO4 could be divided into four steps: reduction of SnO2 to solid phase SnO, volatilization of gaseous SnO, adsorption of gaseous SnO on the surface of Fe3O4, and redox reaction between SnO and Fe3O4...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28246337/diacylglycerol-kinase-%C3%AF%C2%B5-deficiency-preserves-glucose-tolerance-and-modulates-lipid-metabolism-in-obese-mice
#17
Louise Mannerås-Holm, Milena Schönke, Joseph T Brozinick, Laurène Vetterli, Hai-Hoang Bui, Philip Sanders, Emmani B M Nascimento, Marie Björnholm, Alexander V Chibalin, Juleen R Zierath
Diacylglycerol kinases (DGKs) catalyze the phosphorylation and conversion of DAG into phosphatidic acid. DGK isozymes have unique primary structures, expression patterns, subcellular localizations, regulatory mechanisms and DAG preferences. DGKε has a hydrophobic segment that promotes its attachment to membranes and shows substrate specificity for DAG with an arachidonoyl acyl chain in the sn-2 position of the substrate. We determined the role of DGKε in the regulation of energy and glucose homeostasis in relation to diet-induced insulin resistance and obesity using DGKε deficient (KO) and wild-type mice...
February 28, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28225268/structure-and-characterization-of-a-zero-dimensional-alkali-tin-dihalides-compound-cs3sn3f2cl7-with-the-sn2f2cl4-2-clusters
#18
Pifu Gong, Siyang Luo, Ke Xiao, Qian Huang, Yi Yang, Hongwei Huang, Yicheng Wu, Chuangtian Chen, Zheshuai Lin
A new perovskite stoichiometric alkali tin dihalides compound, Cs3Sn3F2Cl7, is synthesized by a hydrothermal method. This compound belongs to the monoclinic space group of P21/c with cell parameters of a = 9.5645(4) Å, b = 14.2057(7) Å, c = 13.5828(6) Å, and β = 93.2450(10)°. Unlike the common perovskites in which octahedra are interconnected to be a three-dimensional network, Cs3Sn3F2Cl7 possesses a zero-dimensional structure consisting of Cs(+) cations, isolated [SnCl3](-) trigonal pyramids, and dimer structural units [Sn2F2Cl4](2-); the latter microscopic unit is found for the first time...
February 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28212406/accumulation-of-medium-chain-saturated-fatty-acyl-moieties-in-seed-oils-of-transgenic-camelina-sativa
#19
Zhaohui Hu, Qian Wu, Jyoti Dalal, Naresh Vasani, Harry O Lopez, Heike W Sederoff, Rongda Qu
With its high seed oil content, the mustard family plant Camelina sativa has gained attention as a potential biofuel source. As a bioenergy crop, camelina has many advantages. It grows on marginal land with low demand for water and fertilizer, has a relatively short life cycle, and is stress tolerant. As most other crop seed oils, camelina seed triacylglycerols (TAGs) consist of mostly long, unsaturated fatty acyl moieties, which is not desirable for biofuel processing. In our efforts to produce shorter, saturated chain fatty acyl moieties in camelina seed oil for conversion to jet fuel, a 12:0-acyl-carrier thioesterase gene, UcFATB1, from California bay (Umbellularia californica Nutt...
2017: PloS One
https://www.readbyqxmd.com/read/28196124/isoprenoid-phospholipid-conjugates-as-potential-therapeutic-agents-synthesis-characterization-and-antiproliferative-studies
#20
Anna Gliszczyńska, Natalia Niezgoda, Witold Gładkowski, Marta Świtalska, Joanna Wietrzyk
The aim of this research was to extend application field of isoprenoid compounds by their introduction into phospholipid structure as the transport vehicle. The series of novel isoprenoid phospholipids were synthesized in high yields (24-97%), their structures were fully characterized and its anticancer activity was investigated in vitro towards several cell lines of different origin. Most of synthesized compounds showed a significantly higher antiproliferative effect on tested cell lines than free terpene acids...
2017: PloS One
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