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fumaric acid

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https://www.readbyqxmd.com/read/29786954/urinary-metabolites-predict-prolonged-duration-of-delayed-graft-function-in-dcd-kidney-transplant-recipients
#1
S Kostidis, J R Bank, D Soonawala, E Nevedomskaya, C van Kooten, O A Mayboroda, J W de Fijter
Extending kidney donor criteria, including donation after circulatory death (DCD), has resulted in increased rates of delayed graft function (DGF) and primary nonfunction. Here, we used Nuclear Magnetic Resonance (NMR) spectroscopy to analyze the urinary metabolome of DCD transplant recipients at multiple time points (days 10, 42, 180 and 360 after transplantation). The aim was to identify markers that predict prolonged duration of functional DGF (fDGF). Forty-seven metabolites were quantified and their levels were evaluated in relation to fDGF...
May 22, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29780481/linking-defects-hierarchical-porosity-generation-and-desalination-performance-in-metal-organic-frameworks
#2
Weibin Liang, Lin Li, Jingwei Hou, Nicholas D Shepherd, Thomas D Bennett, Deanna M D'Alessandro, Vicki Chen
Composite membranes with defective metal-organic frameworks (MOFs) connect the emerging fields of MOF topological modification, MOF-polymer interfacial engineering and composite material functionalization. Although defective MOFs can be fabricated via thermal or chemical treatment, the relationship between hierarchical MOF structure and their performance in a polymeric membrane matrix has so far not been investigated. Here we show how a modulator fumarate-based MIL-53(Al) microwave synthesis process results in defective MOFs...
April 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29777900/material-basis-research-for-huangqi-jianzhong-tang-against-chronic-atrophic-gastritis-rats-through-integration-of-urinary-metabonomics-and-systemsdock
#3
Yuetao Liu, Wenqian Xu, GuoHong Wang, Xuemei Qin
ETHNOPHARMACOLOGICAL RELEVANCE: Huangqi Jianzhong Tang (HQJZ), a celebrated traditional Chinese medicine (TCM), is commonly used for treatment of chronic atrophic gastritis (CAG) in China. AIM OF THE STUDY: We aimed to screen out the material basis of HQJZ against CAG. MATERIALS AND METHODS: CAG rat model was constructed by alternant administrations of ammonia solution and sodium deoxycholate, and the hunger disorder method. Body weight, biochemical indexes and histopathological exam were used to evaluate the efficacy of HQJZ...
May 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29775942/toxicological-effects-on-earthworms-eisenia-fetida-exposed-to-sub-lethal-concentrations-of-bde-47-and-bde-209-from-a-metabolic-point
#4
Ruoyu Liang, Juan Chen, Yajuan Shi, Yonglong Lu, Suriyanarayanan Sarvajayakesavalu, Xiangbo Xu, Xiaoqi Zheng, Kifayatullah Khan, Chao Su
Earthworms improve the soil fertility and they are also sensitive to soil contaminants. Earthworms (Eisenia fetida), standard reference species, were usually chosen to culture and handle for toxicity tests. Metabolic responses in earthworms exposed to 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47) and decabromodiphenyl ether (BDE-209) were inhibitory and interfered with basal metabolism. In this study, 1 H-NMR based metabolomics was used to identify sensitive biomarkers and explore metabolic responses of earthworms under sub-lethal BDE-47 and BDE-209 concentrations for 14 days...
May 15, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29767961/real-time-monitoring-of-tricarboxylic-acid-metabolites-in-exhaled-breath
#5
Alberto Tejero Rioseras, Kapil Dev Singh, Nora Nowak, Martin T Gaugg, Tobias Bruderer, Renato Zenobi, Pablo M-L Sinues
The tricarboxylic acid (TCA) cycle is one of the most important metabolic pathway for cellular respiration in aerobic organisms. It provides and collects intermediates for many other interconnecting pathways and acts as a hub connecting metabolism of carbohydrates, fatty acids, and amino acids. Alteration in intracellular levels of its intermediates has been linked with a wide range of illnesses ranging from cancer to cellular necrosis or liver cirrhosis. Therefore, there exists an intrinsic interest in monitoring such metabolites...
May 16, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29763776/dimethyl-fumarate-downregulates-the-immune-response-through-the-hca-2-gpr109a-pathway-implications-for-the-treatment-of-multiple-sclerosis
#6
REVIEW
Felipe von Glehn, Rafael P C Dias-Carneiro, Adriel S Moraes, Alessandro S Farias, Veronica A P G Silva, Francisco T M Oliveira, Carlos Eduardo B G Silva, Fabricio de Carvalho, Elaine Rahal, Clare Baecher-Allan, Leonilda M B Santos
BACKGROUND: The mechanisms of action of dimethyl fumarate (DMF), and its metabolite, monomethyl fumarate (MMF), for the treatment of multiple sclerosis are not completely elucidated. OBJECTIVES: To discuss the role of DMF/MMF-induced hydroxycarboxylic acid receptor 2 (HCA2 /GPR109A) pathway activation in the immune response and treatment of MS. METHODS: A narrative (traditional) review of the current literature. RESULTS: Studies have shown that binding of DMF/MMF to HCA2 on dendritic cells inhibits the production of pro-inflammatory cytokines in vitro and in MS murine models...
April 25, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29762004/sequence-dependent-peptide-surface-functionalization-of-metal-organic-frameworks
#7
Gang Fan, Christopher Dundas, Cheng Zhang, Nathaniel A Lynd, Benjamin Keith Keitz
We report a non-covalent surface functionalization technique for water-stable metal organic frameworks (MOFs) using short peptide sequences identified via phage display. Specific frameworks binding peptides were identified for crystalline Zn(MeIM)2 (MeIM = 2-methylimidazole, ZIF-8), semi-amorphous Fe-BTC (BTC = 1,3,5-benzene-tricarboxylate) and Al(OH)(C4H2O4) (MIL-53(Al)-FA, FA: fumaric acid) and their thermodynamic binding affinities and specificities were measured. Electron microscopy, powder X-ray diffraction, and gas adsorption analysis confirmed that the peptide functionalized frameworks retained similar characteristics compared to their as-synthesized counterparts...
May 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29750443/s3-guideline-for-the-treatment-of-psoriasis-vulgaris-update-short-version-part-1-systemic-treatment
#8
Alexander Nast, Lasse Amelunxen, Matthias Augustin, Wolf-Henning Boehncke, Corinna Dressler, Matthew Gaskins, Peter Härle, Bernd Hoffstadt, Joachim Klaus, Joachim Koza, Ulrich Mrowietz, Hans-Michael Ockenfels, Sandra Philipp, Kristian Reich, Thomas Rosenbach, Berthold Rzany, Martin Schlaeger, Gerhard Schmid-Ott, Michael Sebastian, Ralph von Kiedrowski, Tobias Weberschock
The German guideline for the treatment of psoriasis vulgaris was updated using GRADE methodology. The guideline is based on a systematic literature review completed on December 1, 2016, and on a formal consensus and approval process. The first section of this short version of the guideline covers systemic treatment options considered relevant by the expert panel and approved in Germany at the time of the consensus conference (acitretin, adalimumab, apremilast, cyclosporine, etanercept, fumaric acid esters, infliximab, methotrexate, secukinumab and ustekinumab)...
May 2018: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/29749367/use-of-succinic-oxalic-acid-in-reducing-the-dosage-of-colistin-against-new-delhi-metallo-%C3%AE-lactamase-1-bacteria
#9
Ravichandiran Kumar, Brinda Chandar, Madasamy Parani
Background & objectives: New Delhi metallo-β-lactamase 1 (NDM-1) cleaves the beta-lactam ring, and confers bacterial resistance against most of the beta-lactam antibiotics, except tigecycline and colistin. Among these two antibiotics, colistin is considered toxic, and therefore, its clinical use and dosage need cautious approach. In the present study, six organic acids were screened individually and in combination of two acids for their effectiveness against NDM-1 Escherichia coli and a combination of colistin and oxalic or succinic acid was tested to find out the potential of combination therapy for reducing the dose of toxic colistin...
January 2018: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29741885/structural-basis-for-the-catalytic-mechanism-of-ethylenediamine-n-n-disuccinic-acid-lyase-a-carbon-nitrogen-bond-forming-enzyme-with-broad-substrate-scope
#10
Harshwardhan Poddar, Jandre de Villiers, Jielin Zhang, Vinod Puthan Veetil, Hans Raj, Andy-Mark W H Thunnissen, Gerrit J Poelarends
The natural aminocarboxylic acid product ethylenediamine-N,N'-disuccinic acid [(S,S)-EDDS] is able to form a stable complex with metal ions, making it an attractive biodegradable alternative for the synthetic metal chelator ethylenediamine tetraacetic acid (EDTA), which is currently used at large scale in numerous applications. Previous studies have demonstrated that biodegradation of (S,S)-EDDS may be initiated by an EDDS lyase, converting (S,S)-EDDS via the intermediate N-(2-aminoethyl)aspartic acid (AEAA) into ethylenediamine and two molecules of fumarate...
May 9, 2018: Biochemistry
https://www.readbyqxmd.com/read/29730322/salt-formation-improved-the-properties-of-a-candidate-drug-during-early-formulation-development
#11
Kalle Sigfridsson, Matti Ahlqvist, Martin Lindsjö, Stefan Paulsson
The purpose of this study was to investigate if AZD5329, a dual neurokinin NK1/2 receptor antagonist, is a suitable candidate for further development as an oral immediate release (IR) solid dosage form as a final product. The neutral form of AZD5329 has only been isolated as amorphous material. In order to search for a solid material with improved physical and chemical stability and more suitable solid-state properties, a salt screen was performed. Crystalline material of a maleic acid salt and a fumaric acid salt of AZD5329 were obtained...
May 3, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29713843/a-co-utilization-strategy-to-consume-glycerol-and-monosaccharides-by-rhizopus-strains-for-fumaric-acid-production
#12
Sylwia Kowalczyk, Elwira Komoń-Janczara, Agnieszka Glibowska, Adam Kuzdraliński, Tomasz Czernecki, Zdzisław Targoński
The ability of Rhizopus oryzae to produce fumaric acid in the presence of glycerol and/or various monosaccharides as carbon sources was examined for seventeen different strains of this fungi. These strains were tested in shake-flask cultures on media containing glycerol and seven different carbohydrates, including glucose, fructose, galactose, mannose, xylose, arabinose, and rhamnose. An interesting and applicationally useful phenomenon was observed. This work presents a new approach to the conventional microbiological method of producing fumaric acid...
April 30, 2018: AMB Express
https://www.readbyqxmd.com/read/29709783/development-and-validation-of-an-lc-ms-ms-assay-for-tenofovir-and-tenofovir-alafenamide-in-human-plasma-and-cerebrospinal-fluid
#13
Andrew J Ocque, Colleen E Hagler, Gene D Morse, Scott L Letendre, Qing Ma
A liquid chromatography with triple quadrupole mass spectrometry method was developed and validated for the determination of tenofovir and tenofovir alafenamide concentrations in human plasma and cerebrospinal fluid. Tenofovir and tenofovir alafenamide were extracted from matrix by solid phase extraction. The dried extraction eluents were dissolved in water for LC-MS/MS analysis. Separation was achieved with a Phenomenex Synergi 4 μm Polar-RP 80A column (50 × 2 mm) with a gradient elution of 0.1% formic acid in water and acetonitrile...
April 23, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29707898/three-dimensional-porous-ppf-co-plga-scaffolds-for-tissue-engineering
#14
Wei Wu, Xifeng Liu, Zifei Zhou, A Lee Miller, Lichun Lu
Three-dimensional structural scaffolds have played an important role in tissue engineering, especially broad applications in areas such as regenerative medicine. We have developed novel biodegradable porous polypropylene fumarate-co-poly (lactic-co-glycolic acid) (PPF-co-PLGA) scaffolds using thermally induced phase separation (TIPS), and determined the effects of critical parameters such as copolymer concentration (6, 8, and 10 wt%) and the binary solvent ratio of dioxane:water (78/22, 80/20, 82/18 wt/wt%) on the fabrication process...
April 29, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29707040/incidence-and-mitigation-of-gastrointestinal-events-in-patients-with-relapsing-remitting-multiple-sclerosis-receiving-delayed-release-dimethyl-fumarate-a-german-phase-iv-study-tolerate
#15
Ralf Gold, Eugen Schlegel, Birte Elias-Hamp, Christian Albert, Stephan Schmidt, Björn Tackenberg, James Xiao, Tom Schaak, Hans Christian Salmen
Background: Gastrointestinal (GI) events are common adverse events (AEs) associated with delayed-release dimethyl fumarate (DMF), an approved treatment for relapsing-remitting multiple sclerosis (RRMS). The objective of the TOLERATE study was to evaluate GI tolerability and GI mitigation via symptomatic therapies in patients initiating DMF in a real-world clinical setting in Germany. Methods: TOLERATE was a multicentre, open-label, single-arm study performed at 25 German sites...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29705996/long-term-real-life-safety-profile-and-effectiveness-of-fumaric-acid-esters-in-psoriasis-patients-a-single-centre-retrospective-observational-study
#16
H Dickel, T Bruckner, P Altmeyer
BACKGROUND: Fumaric acid esters (FAEs) are an established systemic treatment for moderate-to-severe psoriasis. However, the long-term clinical safety and effectiveness of continuous FAE monotherapy and combination therapy have not been established. OBJECTIVE: To examine the long-term safety and effectiveness of FAEs as monotherapy and in combination with phototherapy or methotrexate in patients with psoriasis treated at a single centre in Germany. METHODS: This monocentric, retrospective observational study, with a follow-up period of up to 32...
April 28, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29703927/relationships-between-digestive-efficiency-and-metabolomic-profiles-of-serum-and-intestinal-contents-in-chickens
#17
Stéphane Beauclercq, Lydie Nadal-Desbarats, Christelle Hennequet-Antier, Irène Gabriel, Sophie Tesseraud, Fanny Calenge, Elisabeth Le Bihan-Duval, Sandrine Mignon-Grasteau
The increasing cost of conventional feedstuffs has bolstered interest in genetic selection for digestive efficiency (DE), a component of feed efficiency, assessed by apparent metabolisable energy corrected to zero nitrogen retention (AMEn). However, its measurement is time-consuming and constraining, and its relationship with metabolic efficiency poorly understood. To simplify selection for this trait, we searched for indirect metabolic biomarkers through an analysis of the serum metabolome using nuclear magnetic resonance (1 H NMR)...
April 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29688630/the-complex-allosteric-and-redox-regulation-of-the-fumarate-hydratase-and-malate-dehydratase-reactions-of-arabidopsis-thaliana-fumarase-1-and-2-gives-clues-for-understanding-the-massive-accumulation-of-fumarate
#18
Juan Pablo Zubimendi, Andrea Martinatto, Maria Pía Valacco, Silvia Moreno, Carlos Santiago Andreo, María Fabiana Drincovich, Marcos Ariel Tronconi
Arabidopsis thaliana possesses two fumarase genes (FUM), AtFUM1 (At2g47510) encoding for the mitochondrial Krebs cycle-associated enzyme and AtFUM2 (At5g50950) for the cytosolic isoform required for fumarate massive accumulation. Here, the comprehensive biochemical studies of AtFUM1 and AtFUM2 shows that they are active enzymes with similar kinetic parameters but differential regulation. For both enzymes, fumarate hydratase (FH) activity is favored over the malate dehydratase (MD) activity; however, MD is the most regulated activity with several allosteric activators...
April 24, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29685822/metabolomics-approach-to-reduce-the-crabtree-effect-in-continuous-culture-of-saccharomyces-cerevisiae
#19
Makoto Imura, Ryo Iwakiri, Takeshi Bamba, Eiichiro Fukusaki
The budding yeast Saccharomyces cerevisiae is an important microorganism for fermentation and the food industry. However, during production, S. cerevisiae commonly uses the ethanol fermentation pathway for glucose utilization if excess sugar is present, even in the presence of sufficient oxygen levels. This aerobic ethanol fermentation, referred to as "the Crabtree effect" is one of the most significant reasons for low cell yield. To weaken the Crabtree effect in fed-batch and continuous culture, sugar flow should be limited...
April 20, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29673054/synthesis-of-1-4-cyclohexanedimethanol-1-4-cyclohexanedicarboxylic-acid-and-1-2-cyclohexanedicarboxylates-from-formaldehyde-crotonaldehyde-and-acrylate
#20
Yancheng Hu, Zhitong Zhao, Yanting Liu, Guangyi Li, Aiqin Wang, Yu Cong, Tao Zhang, Feng Wang, Ning Li
1,4-Cyclohexanedimethanol (CHDM), 1,4-cyclohexanedicarboxylic acid (CHDA), and 1,2-cyclohexanedicarboxylates are valuable polyester monomers and plasticizers. In this work, we propose a new strategy for the synthesis of these compounds via a proline-catalyzed formal [3+1+2] cycloaddition of formaldehyde, crotonaldehyde, and acrylate (or fumarate), followed by a hydrogenation over commercially available Cu/Zn/Al catalyst, a one-pot hydrogenation/oxidation/hydrolysis process, or a Pd/C-catalyzed tandem decarbonylation/hydrogenation step, respectively...
April 19, 2018: Angewandte Chemie
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