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https://www.readbyqxmd.com/read/28932477/crystal-structure-of-n-2-cyclo-hexyl-sulfan-yl-eth-yl-quinolinic-acid-imide
#1
Hyunjin Park, Myong Yong Choi, Cheol Joo Moon, Tae Ho Kim
The title compound, C15H18N2O2S {systematic name: 6-[2-(cyclo-hexyl-sulfan-yl)eth-yl]-5H-pyrrolo-[3,4-b]pyridine-5,7(6H)-dione}, was obtained from the reaction of pyridine-2,3-di-carb-oxy-lic anhydride (synonym: quinolinic anhydride) with 2-(cyclo-hexyl-sulfan-yl)ethyl-amine. The dihedral angle between the mean plane of the cyclo-hexyl ring and the quinolinic acid imide ring is 25.43 (11)°. In the crystal, each mol-ecule forms two C-H⋯O hydrogen bonds and one weak C-O⋯π [O⋯ring centroid = 3.255 (2) Å] inter-action with neighbouring mol-ecules to generate a ladder structure along the b-axis direction...
September 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932476/crystal-structures-of-hibiscus-acid-and-hibiscus-acid-dimethyl-ester-isolated-from-hibiscus-sabdariffa-malvaceae
#2
Ahmed M Zheoat, Alexander I Gray, John O Igoli, Alan R Kennedy, Valerie A Ferro
The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carb-oxy-lic acid dimethyl sulfoxide monosolvate], C6H6O7·C2H6OS, (I), and hibiscus acid dimethyl ester [systematic name: dimethyl (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carboxyl-ate], C8H10O7, (II). Compound (I) forms a layered structure with alternating layers of lactone and solvent mol-ecules, that include a two-dimensional hydrogen-bonding construct...
September 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932450/a-new-solvate-of-epalerstat-a-drug-for-diabetic-neuropathy
#3
Okky Dwichandra Putra, Daiki Umeda, Kaori Fukuzawa, Mihoko Gunji, Etsuo Yonemochi
Epalerstat {systematic name: (5Z)-5-[(2E)-2-methyl-3-phenyl-prop-2-en-1-yl-idene]-4-oxo-2-sulfanyl-idene-1,3-thia-zolidine-3-acetic acid} crystallized as an acetone monosolvate, C15H13NO3S2·C3H6O. In the epalerstat mol-ecule, the methyl-propyl-enediene moiety is inclined to the phenyl ring and the five-membered rhodamine ring by 21.4 (4) and 4.7 (4)°, respectively. In addition, the acetic acid moiety is found to be almost normal to the rhodamine ring, making a dihedral angle of 85.1 (2)°. In the crystal, a pair of O-H⋯O hydrogen bonds between the carb-oxy-lic acid groups of epalerstat mol-ecules form inversion dimers with an R2(2)(8) loop...
July 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932437/coordination-compounds-containing-bis-di-thiol-ene-chelated-molybdenum-iv-and-oxalate-comparison-of-terminal-with-bridging-oxalate
#4
Agata Gapinska, Alan J Lough, Ulrich Fekl
Two coordination compounds containing tetra-n-butyl-ammonium cations and bis-tfd-chelated molybdenum(IV) [tfd(2-) = S2C2(CF3)2(2-)] and oxalate (ox(2-), C2O4(2-)) in complex anions are reported, namely bis-(tetra-n-butyl-ammonium) bis-(1,1,1,4,4,4-hexa-fluoro-but-2-ene-2,3-di-thiol-ato)oxalatomolybdate(IV)-chloro-form-oxalic acid (1/1/1), (C16H36N)2[Mo(C4F6S2)2(C2O4)]·CHCl3·C2H2O4 or (N (n) Bu4)2[Mo(tfd)2(ox)]·CHCl3·C2H2O4, and bis-(tetra-n-butyl-ammonium) μ-oxalato-bis-[bis-(1,1,1,4,4,4-hexa-fluoro-but-2-ene-2,3-di-thiol-ato)molybdate(IV)], (C16H36N)2[Mo2(C4F6S2)4(C2O4)] or (N (n) Bu4)2[(tfd)2Mo(μ-ox)Mo(tfd)2]...
July 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932435/crystal-structures-of-4-meth-oxy-benzoic-acid-1-3-bis-pyridin-4-yl-propane-2-1-and-biphenyl-4-4-di-carb-oxy-lic-acid-4-meth-oxy-pyridine-1-2
#5
Kazuma Gotoh, Hiroyuki Ishida
The crystal structures of two hydrogen-bonded compounds, namely 4-meth-oxy-benzoic acid-1,3-bis-(pyridin-4-yl)propane (2/1), C13H14.59N2·C8H7.67O3·C8H7.74O3, (I), and biphenyl-4,4'-di-carb-oxy-lic acid-4-meth-oxy-pyridine (1/2), C14H9.43O4·C6H7.32NO·C6H7.25NO, (II), have been determined at 93 K. In (I), the asymmetric unit consists of two crystallographically independent 4-meth-oxy-benzoic acid mol-ecules and one 1,3-bis-(pyridin-4-yl)propane mol-ecule. The asymmetric unit of (II) comprises one biphenyl-4,4'-di-carb-oxy-lic acid mol-ecule and two independent 4-meth-oxy-pyridine mol-ecules...
July 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28926062/selectivity-of-solid-phase-extraction-for-dissolved-organic-matter-in-the-hypersaline%C3%A2-da-qaidam-lake-china
#6
Keli Yang, Yaoling Zhang, Yaping Dong, Wu Li
Dissolved organic matter (DOM) was isolated from the hypersaline Da Qaidam Lake using solid-phase extraction (SPE) methods with five different adsorbents: ENVI-Carb (non-porous graphitized carbon), HLB, PPL, and XAD-8 (polymer based), and ENVI-18 (silica based). Structure-selective assessments of SPE-DOM isolated using the different adsorbents were conducted using a combination of complementary analysis techniques, including dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) analysis, as well as elemental analysis, Fourier transformed infrared spectroscopy (FTIR), (1)H nuclear magnetic resonance ((1)H NMR) and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS)...
September 19, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28925409/metabolic-and-genomic-adaptations-to-winter-fattening-in-a-primate-species-the-grey-mouse-lemur-microcebus-murinus
#7
J Terrien, M Gaudubois, D Champeval, V Zaninotto, L Roger, J F Riou, F Aujard
AIM: To understand the mechanisms underlying the development of metabolic changes leading to obesity remains a major world health issue. Among such mechanisms, seasonality is quite underestimated although it corresponds to the manifestation of extreme metabolic flexibility in response to a changing environment. Nevertheless, the changes induced by such flexibility are far to be understood, especially at the level of insulin signaling, genomic stability or inflammation. METHODS: Here, we investigated the metabolic regulations displayed by a seasonal primate species, the grey mouse lemur (Microcebus murinus) that exhibits pronounced changes in body mass during the 6-month winter season: a fattening period followed by a spontaneous fat loss, without ever reaching pathological stages...
August 14, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28924296/applied-carbohydrate-counting
#8
Lovely Gupta, Deepak Khandelwal, Sanjay Kalra
Carbohydrate counting or "carb counting" is a meal planning technique for persons with diabetes for managing blood glucose levels by tracking the grams of carbohydrate consumed at meals. With better patient education and awareness, carb counting has become an important step in diabetes management. People with all types of diabetes can be benefited with this approach via improved glycaemic control and quality of life. In the first part of this review basic principles of carbohydrate counting, its application in clinical practice and exchange lists pertaining primarily to South Asian populations have been discussed...
September 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28877453/disentangling-high-fat-low-carb-and-healthy-aging
#9
Holly M Brown-Borg
Dietary interventions are simple, non-invasive tools that can be utilized to improve health and lifespan. In this issue, Roberts et al. (2017) and Newman et al. (2017) reveal the physiological benefits of feeding mice ketogenic diets and suggest different underlying mechanisms that may promote healthy aging.
September 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28875027/viscous-hydrophilic-injection-matrices-for-serial-crystallography
#10
Gabriela Kovácsová, Marie Luise Grünbein, Marco Kloos, Thomas R M Barends, Ramona Schlesinger, Joachim Heberle, Wolfgang Kabsch, Robert L Shoeman, R Bruce Doak, Ilme Schlichting
Serial (femtosecond) crystallography at synchrotron and X-ray free-electron laser (XFEL) sources distributes the absorbed radiation dose over all crystals used for data collection and therefore allows measurement of radiation damage prone systems, including the use of microcrystals for room-temperature measurements. Serial crystallography relies on fast and efficient exchange of crystals upon X-ray exposure, which can be achieved using a variety of methods, including various injection techniques. The latter vary significantly in their flow rates - gas dynamic virtual nozzle based injectors provide very thin fast-flowing jets, whereas high-viscosity extrusion injectors produce much thicker streams with flow rates two to three orders of magnitude lower...
July 1, 2017: IUCrJ
https://www.readbyqxmd.com/read/28839326/carbohydrate-counting-1-south-asian-framework
#11
Lovely Gupta, Deepak Khandelwal, Sanjay Kalra
Carbohydrate counting or "carb counting" is a meal planning technique for persons with diabetes for managing blood glucose levels by tracking the grams of carbohydrate consumed at meals. It has shown to improve glycaemic control and glycaemic variability and decreases risk of hypoglycaemia in persons with diabetes especially on insulins. It needs basic education of the patient regarding meal plan, assessment of carbohydrate content of various foods and also exchange lists. It also gives flexibility of food choice, helps to identify patterns in blood glucose levels and adjustment of pre meals short acting insulins as related to food intake...
August 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28817770/photoinduced-copper-catalyzed-alkylation-of-amines-a-mechanistic-study-of-the-cross-coupling-of-carbazole-with-alkyl-bromides
#12
Jun Myun Ahn, Tanvi S Ratani, Kareem I Hannoun, Gregory C Fu, Jonas C Peters
We have recently reported that a variety of couplings of nitrogen, sulfur, oxygen, and carbon nucleophiles with organic halides can be achieved under mild conditions (-40 to 30 °C) through the use of light and a copper catalyst. Insight into the various mechanisms by which these reactions proceed may enhance our understanding of chemical reactivity and facilitate the development of new methods. In this report, we apply an array of tools (EPR, NMR, transient absorption, and UV-vis spectroscopy; ESI-MS; X-ray crystallography; DFT calculations; reactivity, stereochemical, and product studies) to investigate the photoinduced, copper-catalyzed coupling of carbazole with alkyl bromides...
August 31, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28761649/discovering-successful-strategies-for-diabetic-self-management-a-qualitative-comparative-study
#13
Susan C Weller, Roberta Baer, Anita Nash, Noe Perez
OBJECTIVE: This project explored lifestyles of patients in good and poor control to identify naturally occurring practices and strategies that result in successful diabetes management. RESEARCH DESIGN AND METHODS: Semistructured interviews with adult patients with type 2 diabetes explored diet, food preparation, physical activity, medication use and glucose monitoring. Patients (n=56) were classified into good (A1C <7.0%), fair (7.0%<A1C<8.0%) or poor (A1C >8...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28754100/identifying-genomic-targets-for-protein-over-expression-by-omics-analysis-of-quiescent-escherichia-coli-cultures
#14
Shubhashree Mahalik, Ashish Kumar Sharma, Priyanka Jain, Krishna Jyoti Mukherjee
BACKGROUND: A cellular stress response is triggered upon induction of recombinant protein expression which feedback inhibits both growth as well as protein synthesis. In order to separate these two effects, it was decided to study "quiescent cultures" which continue to be metabolically active and express recombinant proteins even after growth cessation. The idea was to identify and up-regulate genes which are responsible for protein synthesis in the absence of growth. This would ensure that, even if growth were adversely affected post induction, there would be no attendant reduction in the protein expression capability of the cells...
July 28, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28741369/bolus-advisors-sources-of-error-targets-for-improvement
#15
John Walsh, Ruth Roberts, Timothy S Bailey, Lutz Heinemann
Bolus advisors that are designed to improve the accuracy of individual bolus doses relative to a meal's carb content and the current glucose have not substantially changed since they were introduced 15 years ago despite an obvious need for enhancement and innovation. Although some glycemic benefits have been demonstrated, bolus advisors largely ignore the large amounts of clinical data they gather that could have a significant impact on glucose outcomes. Concerns have also been raised regarding the aggressive nature of largely unpublished or poorly explained bolus advisor algorithms...
July 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28720218/pesticide-analysis-in-coffee-leaves-using-a-quick-easy-cheap-effective-rugged-and-safe-approach-and-liquid-chromatography-tandem-mass-spectrometry-optimization-of-the-clean-up-step
#16
Maria Teresa Salles Trevisan, Robert Wyn Owen, Pau Calatayud-Vernich, Andrea Breuer, Yolanda Picó
An analytical method using a quick, easy, cheap, effective, rugged and safe (QuEChERS) procedure for multi-residue determination of 52 pesticides in coffee leaf extractshas been developed and validated according to SANTE/11945/2015 guidelines. Different sorbent combinations for dispersive solid phase extraction (d-SPE) clean-up as well as dispersive liquid-liquid microextraction (DLLME) were tested. The relative standard deviations (RSDs) for the recovery of 87-94% of pesticides added to coffee leaf extracts,was ≤20% for samples spiked at concentrations up to 50ng*g(-1) depending on the clean-up procedures...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28712376/grape-pomace-improves-performance-antioxidant-status-fecal-microbiota-and-meat-quality-of-piglets
#17
I Kafantaris, D Stagos, B Kotsampasi, A Hatzis, A Kypriotakis, K Gerasopoulos, S Makri, N Goutzourelas, C Mitsagga, I Giavasis, K Petrotos, S Kokkas, P Goulas, V Christodoulou, D Kouretas
In the present study, grape pomace (GP) was used as feed additive in the diet of weaned piglets in order to develop innovative feedstuffs and to investigate their potential beneficial effects on welfare, productivity and meat quality. For examining the antioxidant capacity of the experimental feeds, 24 piglets of 20 days old were assigned to two experimental groups receiving standard or experimental diet for 30 days. Blood and tissues collections were performed at four different time-points, 2, 20, 35 and 50 days post birth...
July 17, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28694738/-can-you-keep-it-real-practical-and-culturally-tailored-lifestyle-recommendations-by-mexican-american-women-diagnosed-with-type-2-diabetes-a-qualitative-study
#18
Sandra Benavides-Vaello, Sharon A Brown, Roxanne Vandermause
BACKGROUND: The purpose of this article is to engage clinicians in a dialogue about ideas on how to provide more specific, contextually relevant, practical and culturally tailored diabetes self-management recommendations as suggested by Mexican-American women diagnosed with type 2 diabetes. Current diabetes self-management recommendations, targeting Mexican Americans in particular, remain largely broad ("reduce your calorie intake" or "cut back on carbs"), overly ambitious ("stop eating tortillas"), and relatively ineffective (Svedbo Engström et al...
2017: BMC Nursing
https://www.readbyqxmd.com/read/28693980/low-fat-or-low-carb-for-weight-loss-it-depends-on-your-glucose-metabolism
#19
Arne Astrup, Mads F Hjorth
No abstract text is available yet for this article.
August 2017: EBioMedicine
https://www.readbyqxmd.com/read/28679077/occurrence-of-imidacloprid-carbendazim-and-other-biocides-in-italian-house-dust-potential-relevance-for-intakes-in-children-and-pets
#20
Severyn Salis, Cecilia Testa, Paola Roncada, Sara Armorini, Nicola Rubattu, Angelo Ferrari, Roberto Miniero, Gianfranco Brambilla
The occurrence of pesticides intended for non-agricultural use was investigated in 206 dust samples drawn from vacuum-cleaner bags from residential flats in Italy. The multi-residue analysis targeted on 95 different active principles was performed with UPLC-MS/MS, with a Limit of Quantification (LOQ) of 0.008 μg/g dry weight. The results indicated the presence of imidacloprid (IMI) and carbendazim (CARB) in 30% and 26% of the samples, with a mean and P95 concentration between 1.6 and 39 and between 0.08 and 4...
July 5, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
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