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https://www.readbyqxmd.com/read/28812474/protective-effect-of-raisin-currant-against-spatial-memory-impairment-and-oxidative-stress-in-alzheimer-disease-model
#1
Mohammad Gol, Davoud Ghorbanian, Nabiollah Soltanpour, Jamshid Faraji, Mohsen Pourghasem
OBJECTIVES: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive pathological changes of the brain. A number of studies demonstrated compelling evidence of the importance of oxidative processes in AD pathogenesis. Raisin contains polyphenol, phenolic acid, and tannin compounds, which have antioxidant and anti-inflammatory properties. The present study was aimed to evaluate the protective effect of raisin on neurobehavioral and histological changes in rats with Alzheimer...
August 16, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28812340/substrate-controlled-selectivity-switch-in-three-component-reaction-a-ag-catalyzed-strategy-for-the-synthesis-of-functionalized-imidazoles
#2
Changcheng Wang, Enming Wang, Weixin Chen, Lijuan Zhang, Haiying Zhan, Yuanheng Wu, Hua Cao
An efficient Ag-catalyzed three-component reaction of amidines, ynals and alcohols or phenols or water has been developed. This strategy provides a wide range of substrates and represents a simple process for the preparation of different imidazole derivatives in good yields with high regioselectivities.
August 16, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28812195/design-and-evaluation-of-a-compact-photocatalytic-reactor-for-water-treatment
#3
Marko Kete, Olena Pliekhova, Lev Matoh, Urška Lavrenčič Štangar
A compact reactor for photocatalytic oxidation and photocatalytic ozonation water treatment was developed and evaluated by using four model pollutants. Additionally, combinations of pollutants were evaluated. Specially produced Al2O3 porous reticulated monolith foams served as TiO2 carriers, offering a high surface area support. UV lamps were placed in the interior to achieve reduced dimensions of the reactor (12 cm in diameter × 20 cm in height). Despite its small size, the overall photocatalytic cleaning capacity was substantial...
August 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28812011/oil-characterization-and-lipids-class-composition-of-pomegranate-seeds
#4
Zahra Amri, Houda Lazreg-Aref, Manel Mekni, Sinda El-Gharbi, Olfa Dabbaghi, Beligh Mechri, Mohamed Hammami
This study aims to investigate the physicochemical characteristics, phenolics content, and oil composition of pomegranate oil seeds (PSO). Quality indices, pigments, phenolics content, and antioxidant activity were determined. PSO was fractioned into polar lipids: glycolipids (GL) and phospholipids (PL). Sterols profile and fatty acids composition of total lipids (TL), GL, and PL were determined by GC/FID. The free acidity, the peroxide value, and the specific extinction coefficients were, respectively, 1.69%, 3...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28811882/seasonal-changes-in-leaf-chemistry-and-leaf-selection-of-the-japanese-giant-flying-squirrel-upon-two-tree-species
#5
Mutsumi Ito, Noriko Tamura, Fumio Hayashi
Tree leaves are important food sources for arboreal herbivores, such as primates, rodents, and marsupials. These animals do not eat leaves randomly in habitats with many tree species but rather choose based on the chemical components of leaves, such as sugars, fibers, proteins, and toxins. However, the effects of the microscale distribution of these chemicals within each leaf have not been examined for these animals. The giant flying squirrels Petaurista leucogenys are entirely arboreal, nocturnal herbivores, usually feeding on leaves and dropping leaf debris on the ground after partially consuming them...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28811611/the-antibacterial-and-antifungal-activity-of-six-essential-oils-and-their-cyto-genotoxicity-to-human-hel-12469-cells
#6
Andrea Puškárová, Mária Bučková, Lucia Kraková, Domenico Pangallo, Katarína Kozics
Six essential oils (from oregano, thyme, clove, lavender, clary sage, and arborvitae) exhibited different antibacterial and antifungal properties. Antimicrobial activity was shown against pathogenic (Escherichia coli, Salmonella typhimurium, Yersinia enterocolitica, Staphylococcus aureus, Listeria monocytogenes, and Enterococcus faecalis) and environmental bacteria (Bacillus cereus, Arthrobacter protophormiae, Pseudomonas fragi) and fungi (Chaetomium globosum, Penicillium chrysogenum, Cladosporium cladosporoides, Alternaria alternata, and Aspergillus fumigatus)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811233/stimulation-of-ovarian-cell-proliferation-by-tetrabromobisphenol-a-but-not-tetrachlorobisphenol-a-through-g-protein-coupled-receptor-30
#7
Marta Hoffmann, Justyna Gogola, Małgorzata Kotula-Balak, Anna Ptak
Tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA) are bisphenol A (BPA) analogs, where the phenolic moieties are substituted with halogens (Br or Cl). Previous studies indicate that BPA has significant proliferative effects on in vitro cultured epithelial ovarian cancer (EOC) cells. Considering this, we analyzed the effects of both TBBPA and TCBPA at 1, 10, and 50nM on ovarian cancer cell proliferation. The majority of malignant ovarian tumors are epithelial in origin, but approximately 10% are classified as ovarian sex cord tumors, with the most common type being granulosa cell tumors (GCTs)...
August 12, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28811095/can-the-optimum-artificial-tear-treatment-for-dry-eye-disease-be-predicted-from-presenting-signs-and-symptoms
#8
Laika Essa, Deborah Laughton, James S Wolffsohn
PURPOSE: To assess dry eye treatment with four preservative-free dry eye artificial tear treatments to facilitate evidence-based prescribing. METHODS: A randomised, single masked crossover trial of Clinitas Soothe, Hyabak, Tears Again and TheraTears artificial tears was conducted on 50 symptomatic dry eye patients, aged 60.8±14.2years. At baseline and after trialling each treatment for 4 weeks, signs and symptoms were assessed using the Ocular Surface Disease Index (OSDI), non-invasive tear break-up time, fluorescein tear break-up time, tear meniscus height (TMH), Phenol Red test, lid-parallel conjunctival folds (LIPCOF), ocular surface staining, and lipid layer grading and osmolarity (baseline visit only)...
August 12, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28811027/design-of-carbohydrate-electron-transfer-peptides-for-human-histocytic-lymphoma-cell-sensing
#9
Kazuharu Sugawara, Toshihiko Kadoya, Hideki Kuramitz, Yoshihiro Mihara
A carbohydrate/electro-transfer peptide probe was fabricated to perform cell sensing. The probe consisted of a cello-oligosaccharide that was created by the conjugation of an electron-transfer peptide (Y5C) and a carbohydrate via a Schiff base. An oxidation wave due to a phenolic hydroxyl group was obtained by scanning with a glassy carbon electrode. This cell-sensing system was based on a competitive reaction between carbohydrates on a cell surface and the probe as each reacted to a protein that recognized the carbohydrate...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810691/improvement-of-implantation-potential-in-mouse-blastocysts-derived-from-ivf-by-combined-treatment-with-prolactin-epidermal-growth-factor-and-4-hydroxyestradiol
#10
Miki Takeuchi, Misato Seki, Etsuko Furukawa, Akihito Takahashi, Kyosuke Saito, Mitsuru Kobayashi, Kenji Ezoe, Emiko Fukui, Midori Yoshizawa, Hiromichi Matsumoto
STUDY QUESTION: Can supplementation of medium with prolactin (PRL), epidermal growth factor (EGF) and 4-hydroxyestradiol (4-OH-E2) prior to embryo transfer improve implantation potential in mouse blastocysts derived from IVF? SUMMARY ANSWER: Combined treatment with PRL, EGF and 4-OH-E2 improves mouse blastocyst implantation rates, while alone, each factor is ineffective. WHAT IS KNOWN ALREADY: Blastocyst dormancy during delayed implantation caused by ovariectomy is maintained by continued progesterone treatment in mice, and estrogen injection rapidly activates blastocysts to implantation-induced status in vivo...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28810504/torrefaction-of-empty-fruit-bunches-under-biomass-combustion-gas-atmosphere
#11
Yoshimitsu Uemura, Varsheta Sellappah, Thanh Hoai Trinh, Suhaimi Hassan, Ken-Ichiro Tanoue
Torrefaction of oil palm empty fruit bunches (EFB) under combustion gas atmosphere was conducted in a batch reactor at 473, 523 and 573K in order to investigate the effect of real combustion gas on torrefaction behavior. The solid mass yield of torrefaction in combustion gas was smaller than that of torrefaction in nitrogen. This may be attributed to the decomposition enhancement effect by oxygen and carbon dioxide in combustion gas. Under combustion gas atmosphere, the solid yield for torrefaction of EFB became smaller as the temperature increased...
June 13, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28810226/rapid-removal-of-organic-pollutants-by-activation-sulfite-with-ferrate
#12
Jing Zhang, Liang Zhu, Zhenyu Shi, Ying Gao
With the addition of sulfite, almost complete removal of seven out of eight tested contaminants, i.e. benzotriazole, phenol, ciprofloxacin, methyl blue, rhodamine B, methyl orange and sulfamethoxazole, was observed in 30 s except for sulfamethoxazole at pH 9.0, while Fe(VI) alone only resulted in less than 6% removal. In this study, the mechanism of sulfite/Fe(VI) process was explored for the first time. Firstly, sulfite attacks Fe(VI) via a 1-e(-) transfer forming the primary sulfite radical (SO3(-)), then SO3(-) reacts rapidly with oxygen in a diffusion controlled rate to form a much more reactive peroxyl radical SO5(-), which further reacts with HSO3(-) and produces SO4(-)...
July 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28810208/tungsten-doped-tio2-reduced-graphene-oxide-nano-composite-photocatalyst-for-degradation-of-phenol-a-system-to-reduce-surface%C3%A2-and-bulk-electron-hole-recombination
#13
Manisha Yadav, Asha Yadav, Rohan Fernandes, Yaksh Popat, Michele Orlandi, Alpa Dashora, D C Kothari, Antonio Miotello, B L Ahuja, Nainesh Patel
Recombination of photogenerated charges is the main factor affecting the photocatalytic activity of TiO2. Here, we report a combined strategy of suppressing both the bulk as well as the surface recombination processes by doping TiO2 with tungsten and forming a nanocomposite with reduced graphene oxide (rGO), respectively. Sol-gel method was used to dope and optimize the concentration of W in TiO2 powder. UV-Vis, XPS, PL and time resolved PL spectra along with DFT calculations indicate that W(6+) in TiO2 lattice creates an impurity level just below the conduction band of TiO2 to act as a trapping site of electrons, which causes to improve the lifetime of the photo-generated charges...
August 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28809982/coordination-polymer-derived-nano-sized-zinc-ferrite-with-excellent-performance-in-nitro-explosive-detection
#14
Debal Kanti Singha, Partha Mahata
Herein, a mixed metal coordination polymer, {(H2pip)[Zn1/3Fe2/3(pydc-2,5)2(H2O)]·2H2O} 1 {where H2pip = piperazinediium and pydc-2,5 = pyridine-2,5-dicarboxylate}, was successfully synthesized using a hydrothermal technique. To confirm the structure and phase purity of 1, single crystals of an isomorphous pure Fe compound, {(H2pip)[Fe(pydc-2,5)2(H2O)]·2H2O} 1a, were synthesized based on similar synthetic conditions. Single crystal X-ray data of 1a confirmed the one-dimensional anionic metal-organic coordination polymer hydrogen bonded with protonated piprazine (piperazinediium) and lattice water molecules...
August 15, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28809969/solvent-controlled-selective-synthesis-of-biphenols-and-quinones-via-oxidative-coupling-of-phenols
#15
Nagnath Yadav More, Masilamani Jeganmohan
A regioselective synthesis of unsymmetrical and symmetrical biphenols and binaphthols via oxidative coupling of phenols or naphthols in the presence of K2S2O8 in CF3COOH under ambient conditions is described. Interestingly, the 1 : 1 ratio of H2O and CH3CN solvent mixtures at 80 °C instead of CF3COOH provided substituted unsymmetrical quinones. A gram-scale synthesis of biphenols and binaphthols was demonstrated.
August 15, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28809556/radical-chemistry-and-structural-relationships-of-ppcp-degradation-by-uv-chlorine-treatment-in-simulated-drinking-water
#16
Kaiheng Guo, Zihao Wu, Chii Shang, Bo Yao, Shaodong Hou, Xin Yang, Weihua Song, Jingyun Fang
The UV/chlorine process is an emerging advanced oxidation process (AOP) used for the degradation of micropollutants. However, the radical chemistry of this AOP is largely unknown for the degradation of numerous structurally diverse micropollutants in water matrices of varying quality. These issues were addressed by grouping 34 pharmaceuticals and personal care products (PPCPs) according to the radical chemistry of their degradation in the UV/chlorine process at practical PPCP concentrations (1 μg L-1) and in different water matrices...
August 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28809540/simplified-modeling-of-organic-contaminant-adsorption-by-activated-carbon-and-biochar-in-the-presence-of-dissolved-organic-matter-and-other-competing-adsorbates
#17
Kyle Koyu Shimabuku, Julian M Paige, Marisol Luna Agüero, R Scott Summers
Cyclohexanol, phenol, benzoic acid, and phenanthrene fractional removal (italicized words are defined within the main text) by pulverized granular activated carbon and biochar adsorption in deionized water and stormwater was independent of target-adsorbate initial concentrations (C0) when C0s were below concentration thresholds. This permits a simple-modeling approach. C0-independent removal in deionized water at low-target-adsorbate concentrations potentially suggests that DOM in the deionized water induce a competitive effect that causes deviations from the Freundlich model...
August 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28809505/relay-catalysis-manganese-iii-phosphate-catalyzed-asymmetric-addition-of-%C3%AE-dicarbonyls-to-ortho-quinone-methides-generated-by-catalytic-aerobic-oxidation
#18
Konrad Gebauer, Franziska Reuß, Matthias Spanka, Christoph Schneider
The combination of an in situ formed MnL3 complex (HL = Hacac or R(C═O)CH2CO2R) and a chiral phosphoric acid HX* allows for a fully catalytic, asymmetric synthesis of 4H-chromenes starting from 2-alkyl-substituted phenols. The aerobic oxidation toward a transient ortho-quinone methide was efficiently catalyzed by a manganese(III) species MnL3 while the ensuing Michael addition of β-dicarbonyl compounds proved to be catalyzed by a chiral manganese phosphate MnL2X*.
August 15, 2017: Organic Letters
https://www.readbyqxmd.com/read/28808963/extraction-and-qpcr-based-detection-of-mirnas-from-cultured-pbmcs-of-bubaline-origin
#19
Chandra S Mukhopadhyay, Ramneek Verma, Jasdeep Singh
MicroRNAs are small noncoding but functionally important RNA molecules that are involved in regulating diverse cellular, metabolic, and immune processes. Their small size necessitates modification in traditional acid phenol-chloroform based RNA isolation procedures to get highly enriched fraction of small RNA that includes miRNAs and siRNAs . Further, of the different methods available, real-time PCR is a powerful tool for precise and specific detection and quantification of miRNA. Moreover, real-time PCR is used to validate the screening or expression of miRNAs that are discovered during high-throughput sequencing, or microarray analysis...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28808883/removal-of-water-soluble-extractives-improves-the-enzymatic-digestibility-of-steam-pretreated-softwood-barks
#20
Balázs Frankó, Karin Carlqvist, Mats Galbe, Gunnar Lidén, Ola Wallberg
Softwood bark contains a large amounts of extractives-i.e., soluble lipophilic (such as resin acids) and hydrophilic components (phenolic compounds, stilbenes). The effects of the partial removal of water-soluble extractives before acid-catalyzed steam pretreatment on enzymatic digestibility were assessed for two softwood barks-Norway spruce and Scots pine. A simple hot water extraction step removed more than half of the water-soluble extractives from the barks, which improved the enzymatic digestibility of both steam-pretreated materials...
August 14, 2017: Applied Biochemistry and Biotechnology
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