keyword
MENU ▼
Read by QxMD icon Read
search

Dmf

keyword
https://www.readbyqxmd.com/read/28219033/using-a-facile-experimental-manipulation-to-fabricate-and-tune-a-polyoxometalate-cholesterol-hybrid-material
#1
Hai-Kuan Yang, Ling-Ling Liu, Xin Yuan, Shi-Mei Wu
In this work, we describe how the toluene and DMF addition order influences the gelation behaviors and supramolecular structures of a self-assembled polyoxometalate-cholesterol hybrid. Morphological studies of the dried xerogel samples were performed with transmission electron microscopy and atomic force microscopy, revealing that the order of solvent addition directed the self-assembly of polyoxometalate-cholesterol hybrids toward the formation of organogels with different supramolecular structures. In the case of organogel 1, which was formed by adding DMF dropwise into a hybrid-containing toluene solution, the characteristic organogel morphology contained a three-dimensional fibrous network structure...
February 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28211698/demethylation-of-polymethoxyflavones-by-human-gut-bacterium-blautia-sp-mrg-pmf1
#2
Supawadee Burapan, Mihyang Kim, Jaehong Han
Polymethoxyflavones (PMFs) were biotransformed to various demethylated metabolites in the human intestine by the PMF-metabolizing bacterium, Blautia sp. MRG-PMF1. Because the newly formed metabolites can have different biological activities, the pathways and regioselectivity of PMF bioconversion were investigated. Using an anaerobic in vitro study, 12 PMFs, 5,7-dimethoxyflavone (5,7-DMF), 5-hydroxy-7-methoxyflavone (5-OH-7-MF), 3,5,7-trimethoxyflavone (3,5,7-TMF), 5-hydroxy-3,7-dimethoxyflavone (5-OH-3,7-DMF), 5,7,4'-trimethoxyflavone (5,7,4'-TMF), 5-hydroxy-7,4'-dimethoxyflavone (5-OH-7,4'-DMF), 3,5,7,4'-tetramethoxyflavone (3,5,7,4'-TMF), 5-hydroxy-3,7,4'-trimethoxyflavone (5-OH-3,7,4'-TMF), 5,7,3',4'-tetramethoxyflavone (5,7,3',4'-TMF), 3,5,7,3',4'-pentamethoxyflavone (3,5,7,3',4'-PMF), 5-hydroxy-3,7,3',4'-tetramethoxyflavone (5-OH-3,7,3',4'-TMF), and 5,3'-dihydroxy-3,7,4'-trimethoxyflavone (5,3'-diOH-3,7,4'-TMF), were converted to chrysin, apigenin, galangin, kaempferol, luteolin, and quercetin after complete demethylation...
February 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28211333/multiple-pesticide-residues-in-live-and-poisoned-honeybees-%C3%A2-preliminary-exposure-assessment
#3
Tomasz Kiljanek, Alicja Niewiadowska, Marta Gaweł, Stanisław Semeniuk, Milena Borzęcka, Andrzej Posyniak, Krystyna Pohorecka
Study combines data about the exposure of honeybees to pesticides from plant protection products and veterinary medicinal products. Residues of 200 pesticide and pesticide metabolites in 343 live and 74 poisoned honeybee samples, obtained during the years of 2014-2015, were determined by LC-MS/MS and GC-MS/MS. In 44% of live honeybee 48 different pesticide residues were found, mainly amitraz metabolites (DMF, DMPF) and chlorpyrifos. In 98% of poisoned honeybee 57 pesticides and metabolites were detected, mainly chlorpyrifos, dimethoate and clothianidin...
February 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28211024/comparative-effectiveness-research-of-disease-modifying-therapies-for-the-management-of-multiple-sclerosis-analysis-of-a-large-health-insurance-claims-database
#4
Aaron Boster, Jacqueline Nicholas, Ning Wu, Wei-Shi Yeh, Monica Fay, Michael Edwards, Ming-Yi Huang, Andrew Lee
INTRODUCTION: Limited data are available on the real-world effectiveness of newer oral disease-modifying therapies (DMTs) in multiple sclerosis. The purpose of this study was to retrospectively compare the real-world effectiveness of dimethyl fumarate (DMF), fingolimod, teriflunomide, and injectable DMTs in routine clinical practice based on US claims data. METHODS: Patients newly-initiating DMF, interferon beta (IFNβ), glatiramer acetate (GA), teriflunomide, or fingolimod in 2013 were identified in the Truven MarketScan Commercial Claims Databases (N = 6372)...
February 16, 2017: Neurology and Therapy
https://www.readbyqxmd.com/read/28209373/cost-utility-of-first-line-disease-modifying-treatments-for-relapsing-remitting-multiple-sclerosis
#5
Erkki Soini, Jaana Joutseno, Marja-Liisa Sumelahti
PURPOSE: This study evaluated the cost-effectiveness of first-line treatments of relapsing-remitting multiple sclerosis (RRMS) (dimethyl fumarate [DMF] 240 mg PO BID, teriflunomide 14 mg once daily, glatiramer acetate 20 mg SC once daily, interferon [IFN]-β1a 44 µg TIW, IFN-β1b 250 µg EOD, and IFN-β1a 30 µg IM QW) and best supportive care (BSC) in the health care payer setting in Finland. METHODS: The primary outcome was the modeled incremental cost-effectiveness ratio (ICER; €/quality-adjusted life-year [QALY] gained, 3%/y discounting)...
February 13, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28206899/relating-molar-incisor-hypomineralization-and-caries-experience-using-the-decayed-missing-or-filled-index
#6
Gabriela C A Americano, Roberta C Jorge, Luiz Flávio Moliterno, Vera M Soviero
PURPOSE: This case-control study aimed to investigate the association between molar incisor hypomineralization (MIH) and caries experience in seven- to 11-year-old children. METHODS: Children seen in a pediatric dental clinic in 2011 to 2012 and born in 2002, 2003, or 2004 were considered eligible. Children with decayed, missing, or filled teeth in the permanent dentition (DMF-T) were allocated to the case group, and those with no DMF-T were allocated to the control group...
October 15, 2016: Pediatric Dentistry
https://www.readbyqxmd.com/read/28206761/molecular-cobalt-complexes-with-pendant-amines-for-selective-electrocatalytic-reduction-of-carbon-dioxide-to-formic-acid
#7
Souvik Roy, Bhaskar Sharma, Jacques Pecaut, Philippe Simon, Marc Fontecave, Phong D Tran, Etienne Derat, Vincent Artero
We report here on a new series of CO2-reducing molecular catalysts based on Earth-abundant elements that are very selective for the production of acid formic in DMF/water mixtures (Faradaic efficiency of 90±10%) at moderate overpotentials (500-700 mV in DMF measured at the middle of the catalytic wave). The [CpCo(PR2NR'2)I]+compounds contain diphosphine ligands PR2NR'2 with two pendent amine residues that act as proton relays during CO2 reduction catalysis and tune their activity. Four different PR2NR'2 ligands with cyclohexyl or phenyl substituents on phosphorus and benzyl or phenyl substituents on nitrogen were employed and the compound with the most electron-donating phosphine ligand and the most basic amine functions performs best among the series with turnover frequency >1000 s 1...
February 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28199096/why-porous-materials-have-selective-adsorptions-a-rational-aspect-from-electrodynamics
#8
Qiang Chen, Yuguang Ma, Wei-Chao Song, Ze Chang, Jian-Rong Li, Jun Zhang, Hong-Wei Sun, Perla B Balbuena, Xian-He Bu
Gas storage/separation is a typical application of porous materials such as metal organic frameworks (MOFs). The adsorption/separation behavior results from the host-guest and/or guest-guest interaction and equilibration (host, porous material; guest, adsorbates). Although the driving forces for gas adsorption have been investigated, a detailed picture of interactions between gas molecules and MOFs has not clearly emerged. Herein, a new cobalt microporous MOF [Co(tipb)(adc)](DMF)3(H2O)1.5, which possesses a rare self-interpenetrated gra topology, has been prepared with both tipb and H2adc ligands (tipb = 1,3,5-tris(p-imidazolylphenyl)benzene, adc = 9,10-anthracenedicarboxylate)...
February 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28198492/redox-state-manipulation-of-a-tris-p-tetrazolylphenyl-amine-ligand-and-its-mn-2-coordination-frameworks
#9
Carol Hua, Jing-Yuan Ge, Floriana Tuna, David Collison, Jing-Lin Zuo, Deanna M D'Alessandro
In situ spectroelectrochemical experiments coupled with UV/Vis/NIR, EPR, magnetism and fluorescence techniques have enabled insights into the electronic properties of the tris(p-tetrazolylphenyl)amine (H3TTPA) ligand and the new Mn(2+) frameworks [Mn3(TTPA)2(MeOH)6]n (1) and [Mn3(TTPA)2(DMF)6]n (2). Oxidation of H3TTPA generated the triarylamine radical which was found to be delocalised throughout the ligand backbone. Solid state Vis/NIR and EPR spectroelectrochemical experiments on the frameworks were used to probe the optical properties of the accessible redox states and their relative stabilities, as well as the charge transfer interactions which were generated upon infiltration of electron acceptor guests...
February 15, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28195718/improvement-of-methane-framework-interaction-by-controlling-pore-size-and-functionality-of-pillared-mofs
#10
Sayed Ali Akbar Razavi, Mohammad Yaser Masoomi, Timur Islamoglu, Ali Morsali, Yan Xu, Joseph T Hupp, Omar K Farha, Jun Wang, Peter C Junk
The rational design of functionalized porous metal-organic frameworks (MOFs) for gas adsorption applications has been applied using three spacer ligands H2DPT (3,6-di(pyridin-4-yl)-1,4-dihydro-1,2,4,5-tetrazine), DPT (3,6-di(pyridin-4-yl)-1,2,4,5-tetrazine), and BPDH (2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene) to synthesize TMU-34, [Zn(OBA)(H2DPT)0.5]n·DMF, TMU-34(-2H), [Zn(OBA)(DPT)0.5]n·DMF, and TMU-5, [Zn(OBA)(BPDH)0.5]n·1.5DMF, respectively. By controlling the pore size and chemical functionality of these three MOFs, we can improve the interactions between CO2 and especially CH4 with the frameworks...
February 14, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28194461/a-3d-microblade-structure-for-precise-and-parallel-droplet-splitting-on-digital-microfluidic-chips
#11
Cheng Dong, Yanwei Jia, Jie Gao, Tianlan Chen, Pui-In Mak, Mang-I Vai, Rui P Martins
Existing digital microfluidic (DMF) chips exploit the electrowetting on dielectric (EWOD) force to perform droplet splitting. However, the current splitting methods are not flexible and the volume of the droplets suffers from a large variation. Herein, we propose a DMF chip featuring a 3D microblade structure to enhance the droplet-splitting performance. By exploiting the EWOD force for shaping and manipulating the mother droplet, we obtain an average dividing error of <2% in the volume of the daughter droplets for a number of fluids such as deionized water, DNA solutions and DNA-protein mixtures...
February 14, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28191569/benzimidazolylquinoxalines-novel-fluorophores-with-tuneable-sensitivity-to-solvent-effects
#12
Timur I Burganov, Nataliya A Zhukova, Vakhid A Mamedov, Christoph Bannwarth, Stefan Grimme, Sergey A Katsyuba
We report on the photophysical properties, conjugation, conformational behavior, intra- and intermolecular hydrogen bonds (HBs) of a series of novel fluorophores, consisting of 3-arylquinoxaline and benzimidazole moieties linked by a single CC bond. Computations employing density functional theory (DFT) reveal that conjugation between these moieties stabilizes syn-conformers with two HB centers located on the same side of the molecule. Anti-conformers form stronger intermolecular HBs with DMSO and DMF than syn-conformers, and this influences the energy gap between syn- and anti-forms, especially upon excitation of the molecules to the S1 state...
February 13, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28181536/the-nrf2-transcriptional-target-osgin1-contributes-to-monomethyl-fumarate-mediated-cytoprotection-in-human-astrocytes
#13
Melanie S Brennan, Maria F Matos, Karl E Richter, Bing Li, Robert H Scannevin
Dimethyl fumarate (DMF) is indicated for the treatment of relapsing multiple sclerosis and may exert therapeutic effects via activation of the nuclear factor (erythroid-derived 2)-like 2 (NRF2) pathway. Following oral DMF administration, central nervous system (CNS) tissue is predominantly exposed to monomethyl fumarate (MMF), the bioactive metabolite of DMF, which can stabilize NRF2 and induce antioxidant gene expression; however, the detailed NRF2-dependent mechanisms modulated by MMF that lead to cytoprotection are unknown...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28180112/oral-multiple-sclerosis-drugs-inhibit-the-in-vitro-growth-of-epsilon-toxin-producing-gut-bacterium-clostridium-perfringens
#14
Kareem R Rumah, Timothy K Vartanian, Vincent A Fischetti
There are currently three oral medications approved for the treatment of multiple sclerosis (MS). Two of these medications, Fingolimod, and Teriflunomide, are considered to be anti-inflammatory agents, while dimethyl fumarate (DMF) is thought to trigger a robust antioxidant response, protecting vulnerable cells during an MS attack. We previously proposed that epsilon toxin from the gut bacterium, Clostridium perfringens, may initiate newly forming MS lesions due to its tropism for blood-brain barrier (BBB) vasculature and central nervous system myelin...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28179952/nucleophilic-displacement-reactions-of-5-derivatised-nucleosides-in-a-vibration-ball-mill
#15
Olga Eguaogie, Patrick F Conlon, Francesco Ravalico, Jamie S T Sweet, Thomas B Elder, Louis P Conway, Marc E Lennon, David R W Hodgson, Joseph S Vyle
Vibration ball-milling in a zirconia-lined vessel afforded clean and quantitative nucleophilic displacement reactions between 4-methoxybenzylthiolate salts and nucleoside 5'-halides or 5'-tosylates in five to 60 minutes. Under these conditions, commonly-encountered nucleoside cyclisation byproducts (especially of purine nucleosides) were not observed. Liquid-assisted grinding of the same 5'-iodide and 5'-tosylate substrates with potassium selenocyanate in the presence of DMF produced the corresponding 5'-selenocyanates in variable yields over the course of between one and eleven hours thereby avoiding the preparation and use of hygroscopic tetrabutylammonium salts...
2017: Beilstein Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28176384/the-effect-of-some-cryoprotectants-on-dromedary-camel-frozen-thawed-semen
#16
D A El-Badry, R H Mohamed, H A El-Metwally, T R Abo Al-Naga
The cryopreserved camel semen is often associated with poor quality and fertility. This study aimed to improve the dromedary frozen semen quality by comparing the efficiency of four cryoprotectant agents (CPAs) on sperm freezability. Semen samples were collected from seven male Maghrabi camels, diluted with Shotor diluent supplemented with glycerol (Sh-G), dimethyl formamide (DMF, Sh-DF), dimethyl sulfoxide (DMSO, Sh-DS) or ethylene glycol (EG, Sh-EG), all at 6% final concentration, and the samples were subjected to cryopreservation...
February 7, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28170009/a-unique-delaminated-mos4-os-leuh-composite-exhibiting-turn-on-luminescence-sensing-for-detection-of-water-in-formamide
#17
Linxia Xie, Chenyu Liu, Lijiao Ma, Chengliang Xiao, Shulan Ma, Genban Sun, Huifeng Li, Xiaojing Yang
We demonstrate a novel example of a delaminated MoS4/OS-LEuH composite (LEuH is layered europium hydroxide, OS is 1-octane sulfonate), which exhibits quenched luminescence in formamide and highly enhanced red emission in the water-present case. The turn-on luminescence sensing capability of the material is promising for feasible detection of a trace amount of water in formamide (FM) and N,N-dimethylformamide (DMF).
February 7, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28161500/gold-nanocages-decorated-biocompatible-amine-functionalized-graphene-as-an-efficient-dopamine-sensor-platform
#18
Sahar Daemi, Ali Akbar Ashkarran, Ali Bahari, Shahram Ghasemi
Nanocomposite of gold nanocages and chemically modified graphene oxide (GNCs/CMG) was synthesized in N,N-dimethylformamide (DMF) for sensitive detection of dopamine (DA). DA is widely spread in central nervous system which can regulates essential body functions like movement and emotional behaviour. In this regard sensitive and fast detection of DA level in human body is still challenging considering its interference with other biomolecules in biological samples. CMG was synthesized through amine modification of graphene oxide (GO) with DMF at relatively high temperature followed by attachment of GNCs, fabricated using a galvanic replacement between silver nanocubes and HAuCl4 solution in the DMF...
May 15, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28160439/selective-hydrodeoxygenation-of-5-hydroxymethylfurfural-to-2-5-dimethylfuran-over-heterogeneous-iron-catalysts
#19
Jiang Li, Jun Ling Liu, He Yang Liu, Guang Yue Xu, Jun Jie Zhang, Jia Xing Liu, Guang Lin Zhou, Qin Li, Zhi Hao Xu, Yao Fu
This work provided the first example of selective hydrodeoxygenation of 5-hydroxymethylfurfural to 2,5-dimethylfuran over heterogeneous iron catalysts. Catalyst prepared by the pyrolysis of iron-phenanthroline complex on activated carbon at 800 oC was demonstrated to be the most active heterogeneous iron catalyst. Under the optimal reaction condition, complete conversion of HMF was achieved with an 86.2% selectivity of DMF. The reaction pathway was investigated thoroughly, and the hydrogenation of C=O bond in HMF was demonstrated to be the rate-determining step during the hydrodeoxygenation, which will be accelerated greatly by using alcohol solvents as additional H-donors...
February 3, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28157635/regulation-gel-formation-hierarchical-structures-and-surface-wettability-via-isomeride-effect-in-supramolecular-organogel-system
#20
Xinhua Cao, Qianqian Ding, Aiping Gao, Haiting Lv, Na Zhao, Dan Liu
A new serial of gelators with two cholesteryl groups based on o-phenylenediamine, m-phenylenediamine and p-phenylenediamine were synthesized, and their organogelation ability was evaluated. We found that G-o could form gels in DMF, DMSO and ethyl acetate, G-m and G-p could only gel DMF and 1,4-dioxane. The organogels were thoroughly characterized using various microscopic techniques including field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), UV-Vis spectrum, FT-IR spectrum and contact angle...
May 15, 2017: Journal of Colloid and Interface Science
keyword
keyword
44949
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"