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https://www.readbyqxmd.com/read/29351922/activation-of-constitutive-androstane-receptor-ameliorates-renal-ischemia-reperfusion-induced-liver-and-kidney-injury
#1
You-Jin Choi, Dong Zhou, Anne Barbosa, Yongdong Niu, Xiudong Guan, Meishu Xu, Songrong Ren, Thomas Nolin, Yiuhua Liu, Wen Xie
Acute kidney injury (AKI) is associate with high mortality. Despite the evidence of AKI-induced distant organ injury, a relationship between AKI and liver injury has not been clearly established. The goal of this study is to investigate whether renal ischemia-reperfusion (IR) can affect liver pathophysiology. We showed that renal IR in mice induced fatty liver and compromised liver function through the down-regulation of constitutive androstane receptor (CAR; -90.4%) and inhibition of hepatic very low-density lipoprotein-triglyceride (VLDL-TG) secretion (-28...
January 19, 2018: Molecular Pharmacology
https://www.readbyqxmd.com/read/29349626/a-two-stage-system-coupling-hydrolytic-acidification-with-algal-microcosms-for-treatment-of-wastewater-from-the-manufacture-of-acrylonitrile-butadiene-styrene-abs-resin
#2
Shuhao Huo, Feifei Zhu, Bin Zou, Ling Xu, Fengjie Cui, Wenhua You
OBJECTIVES: To demonstrate the effectiveness of a novel two-stage system coupling hydrolytic acidification with algal microcosms for the treatment of acrylonitrile butadiene styrene (ABS) resin-manufacturing wastewater. RESULTS: After hydrolytic acidification, the BOD5/COD ratio increased from 0.22 to 0.56, showing improved biodegradability of the wastewater. Coupled with hydrolytic acidification, the algal microcosms showed excellent capability of in-depth removal of COD, NH3-N and phosphorus with removal rates 83, 100, and 89%, respectively, and aromatic pollutants, including benzene, were almost completely removed...
January 18, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29349455/on-the-h2-interactions-with-transition-metal-adatoms-supported-on-graphene-a-systematic-density-functional-study
#3
Montserrat Manadé, Francesc Viñes, Adrià Gil, Francesc Illas
The attachment of H2 to the full set of transition metal (TM) adatoms supported on graphene is studied by using density functional theory. Methodology validation calculations on the interactions of H2 with benzene and graphene show that any of the vdW corrections under study, the Grimme D2, D3, D3 with Becke-Jonson damping (D3BJ), and Tkatchenko-Scheffler methods, applied on the PBE functional, are similarly accurate in describing such subtle interactions, with an accuracy of almost 2 kJ mol-1 compared to experiments...
January 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29349449/local-and-global-aromaticity-in-a-molecular-carbon-nanobelt-insights-from-magnetic-response-properties-in-neutral-and-charged-species
#4
A Muñoz-Castro
The formation of carbon nanobelt made exclusively from fused benzene rings has recently been achieved. Our results reveal an interesting shift from a local aromatic character constrained in each of the six aromatic Clar sextets (6π-electron circuit) to a global aromatic character in charged species (+2 and -2) involving the overall π-circuit from the molecular nanobelt. This demonstrates the suppression of the local aromatic character in favor of a global aromaticity by selecting the oxidation state of the carbon nanobelt, giving rise to a shielding cone extended within the structure...
January 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29348363/atomic-resolution-transmission-electron-microscopy-of-electron-beam-sensitive-crystalline-materials
#5
Daliang Zhang, Yihan Zhu, Lingmei Liu, Xiangrong Ying, Chia-En Hsiung, Rachid Sougrat, Kun Li, Yu Han
High-resolution imaging of electron beam-sensitive materials is one of the most difficult applications of transmission electron microscopy (TEM). The challenges are manifold, including the acquisition of images with extremely low beam doses, the time-constrained search for crystal zone axes, the precise image alignment, and the accurate determination of the defocus value. We develop a suite of methods to fulfill these requirements and acquire atomic-resolution TEM images of several metal organic frameworks that are generally recognized as highly sensitive to electron beams...
January 18, 2018: Science
https://www.readbyqxmd.com/read/29347260/enhancement-of-polar-anchoring-strength-in-a-graphene-nematic-suspension-and-its-effect-on-nematic-electro-optic-switching
#6
Rajratan Basu
A small quantity of monolayer graphene flakes is doped in a nematic liquid crystal (LC), and the effective polar anchoring strength coefficient between the LC and the alignment substrate is found to increase by an order of magnitude. The hexagonal pattern of graphene can interact with the LC's benzene rings via π-π electron stacking, enabling the LC to anchor to the graphene surface homogeneously (i.e., planar anchoring). When the LC cell is filled with the graphene-doped LC, some graphene flakes are preferentially attached to the alignment layer and modify the substrate's anchoring property...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346285/characterization-of-odors-of-wood-by-gas-chromatography-olfactometry-with-removal-of-extractives-as-attempt-to-control-indoor-air-quality
#7
Ru Liu, Chen Wang, Anmin Huang, Bin Lv
Indoor air quality problems are usually revealed by occupants' complaints. In this study, the odors of two types of hardwood species, namely, Cathy poplar (Populus cathayana Rehd.) and rubberwood (Hevea brasiliensis) were selected and extracted with ethanol-toluene for removal of extractives in an attempt to eliminate the odors. The odorous components of neat and extracted woods were identified by gas chromatography-mass spectrometry/olfactometry (GC-MS/O). The results showed that about 33 kinds of key volatile compounds (peak area above 0...
January 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29345903/light-emitting-diodes-based-on-colloidal-silicon-quantum-dots-with-octyl-and-phenylpropyl-ligands
#8
Xiangkai Liu, Shuangyi Zhao, Wei Gu, Yuting Zhang, Xvsheng Qiao, Zhenyi Ni, Xiaodong Pi, Deren Yang
Colloidal silicon quantum dots (Si QDs) hold ever-growing promise for the development of novel optoelectronic devices such as light-emitting diodes (LEDs). Although it has been proposed that ligands at the surface of colloidal Si QDs may significantly impact the performance of LEDs based on colloidal Si QDs, little systematic work has been carried out to compare the performance of LEDs that are fabricated by using colloidal Si QDs with different ligands. Here colloidal Si QDs with rather short octyl ligands (Octyl-Si QDs) and phenylpropyl ligands (PhPr-Si QDs) are employed for the fabrication of LEDs...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29344589/magnetism-tuning-strategies-for-graphene-oxide-based-on-magnetic-oligoacene-oxide-patches-model
#9
Yanjie Wen, Chia-Liang Yen, Linyin Yan, Hirohiko Kono, Sheng-Hsien Lin, Yong-Chien Ling
Graphene oxide (GO) has wide application potential owing to its 2D structure and diverse modification sites for various targeted uses. The introduction of magnetism into GO structures has further advanced the controllability of the application of GO materials. Herein, the concept of modular design and modeling was applied to tune the magnetism of GO. To obtain desirable magnetic properties, diradical-structured GO patches were formed by the introduction of two functional groups to break the Kekule structure of the benzene ring...
January 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29343451/biochemical-characterization-of-halophilic-alkalithermophilic-amylopullulanase-puld7-and-truncated-amylopullulanases-puld7%C3%AE-n-and-puld7%C3%AE-c
#10
Noha M Mesbah, Juergen Wiegel
A pullulanase, PulD7, was identified in the genome of the halophilic, alkalithermophilic isolate Alkalilimnicola sp. NM-DCM-1. PulD7 is 701 amino acids large with a carbohydrate binding module (CBM) 48 at the N-terminal. The full length PulD7 and N- and C-terminal truncated versions were cloned, heterologously expressed and functionally characterized. PulD7 displayed maximal activity at 55 °C, pH 9.5 and 2 M NaCl. PulD7 had good thermal stability, with a half-life of 693 min at 50 °C. PulD7 is an amylopullulanase, hydrolyzing both α‑1,4‑ and α‑1,6‑glycosidic bonds in soluble starch and pullulan, respectively...
January 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29341647/attosecond-electron-correlation-dynamics-in-double-ionization-of-benzene-probed-with-two-electron-angular-streaking
#11
Alexander H Winney, Suk Kyoung Lee, Yun Fei Lin, Qing Liao, Pradip Adhikari, Gihan Basnayake, H Bernhard Schlegel, Wen Li
With a novel three-dimensional electron-electron coincidence imaging technique and two-electron angular streaking method, we show that the emission time delay between two electrons can be measured from tens of attoseconds to more than 1 fs. Surprisingly, in benzene, the double ionization rate decays as the time delay between the first and second electron emission increases during the first 500 as. This is further supported by the decay of the Coulomb repulsion in the direction perpendicular to the laser polarization...
September 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341618/reactions-of-1-5-diaryl-3-trifluoromethyl-pent-1-en-4-yn-3-yl-cations-with-benzene-in-tfoh-synthesis-of-cf3-helicopter-like-molecules
#12
Aleksey V Zerov, Galina L Starova, Vitalii V Suslonov, Olesya V Khoroshilova, Aleksander V Vasilyev
Trimethylsilyl ethers of 1,5-diaryl-3-(trifluoromethyl)pent-1-en-4-yn-3-oles in superacid CF3SO3H (TfOH) give rise to the corresponding intermediate CF3-pentenynyl cations. These species react with benzene to afford conjugated CF3-pentenynes, which undergo subsequent cyclization, first, into CF3-cycloheptadienes and, finally, into unusual CF3-"helicopter"-like bicyclic structures.
January 17, 2018: Organic Letters
https://www.readbyqxmd.com/read/29340861/investigating-the-composition-characteristics-of-dissolved-and-particulate-colloidal-organic-matter-in-effluent-dominated-stream-using-fluorescence-spectroscopy-combined-with-multivariable-analysis
#13
Min-Da Yu, Xiao-Song He, Bei-Dou Xi, Ru-Tai Gao, Xian-Wei Zhao, Hui Zhang, Cai-Hong Huang, Wenbing Tan
Fluorescence excitation-emission matrix (EEM) spectroscopy combined with principal component analysis (PCA) and parallel factor analysis (PARAFAC) were used to investigate the compositional characteristics of dissolved and particulate/colloidal organic matter and its correlations with nitrogen, phosphorus, and heavy metals in an effluent-dominated stream, Northern China. The results showed that dissolved organic matter (DOM) was comprised of fulvic-like, humic-like, and protein-like components in the water samples, and fulvic-like substances were the main fraction of DOM among them...
January 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29338225/stereoselective-photodimerization-of-3-arylindenones-in-solution-and-in-the-solid-state
#14
Naohiro Uemura, Hiroki Ishikawa, Naoki Tamura, Yasushi Yoshida, Takashi Mino, Yoshio Kasashima, Masami Sakamoto
Photodimerization of 3-arylindenones in solution and in the solid-state was examined. Irradiation of 3-arylindenones in benzene exclusively gave C2-symmetric anti-HH cyclobutane dimers in good yields. In contrast, photolysis in the solid-state afforded syn-HH cyclobutane dimers efficiently, which was considerably influenced by the molecular arrangement in the crystal lattice.
January 17, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29337552/molecular-dynamics-simulations-of-the-oil-detachment-from-the-hydroxylated-silica-surface-effects-of-surfactants-electrostatic-interactions-and-water-flows-on-the-water-molecular-channel-formation
#15
Jian Tang, Zhou Qu, Jianhui Luo, Lanyan He, Pingmei Wang, Ping Zhang, Xianqiong Tang, Yong Pei, Bin Ding, Baoliang Peng, Yunqing Huang
The detachment process of an oil molecular layer or drop situated above a horizontal substrate was often described by a three-stage process. In this mechanism, the water molecule penetration and diffusion between the oil phase and the solid phase was proposed to be a crucial step to aid in removal of oil drops from solid surfaces. In this work, the detachment process of a two-dimensional alkane molecule layer from a silica surface in aqueous surfactant solutions is studied by means of molecular dynamics (MD) simulations...
January 16, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29336572/-hg-scn-3-2-%C3%AE-l-2-an-efficient-secondary-building-unit-for-the-synthesis-of-2d-iron-ii-spin-crossover-coordination-polymers
#16
Daopeng Zhang, Francisco Javier Valverde-Muñoz, Carlos Bartual-Murgui, Lucía Piñeiro-López, M Carmen Muñoz, José Antonio Real
We report an unprecedented series of two-dimensional (2D) spin-crossover (SCO) heterobimetallic coordination polymers generically formulated as {FeII[(HgII(SCN)3)2](L)x}·Solv, where x = 2 for L = tvp (trans-(4,4'-vinylenedipyridine)) (1tvp), bpmh ((1E,2E)-1,2-bis(pyridin-4-ylmethylene)hydrazine) (1bpmh·nCH3OH; n = 0, 1), bpeh ((1E,2E)-1,2-bis(1-(pyridin-4-yl)ethylidene)hydrazine) (1bpeh·nH2O; n = 0, 1) and x = 2.33 for L = bpbz (1,4-bis(pyridin-4-yl)benzene) (1bpbz·nH2O; n = 0, 2/3). The results confirm that self-assembly of FeII, [HgII(SCN)4]2-, and ditopic rodlike bridging ligands L containing 4-pyridyl moieties favors the formation of linear [Fe(μ-L)]n2n+ chains and in situ generated binuclear units {[HgII(SCN)3]2(μ-L)}2-...
January 16, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29336269/design-synthesis-and-biological-evaluation-of-new-azole-derivatives-as-potent-aromatase-inhibitors-with-potential-effects-against-breast-cancer
#17
Farzin Hadizadeh, Fatemeh Kalalinia, Mohammad Jouya, Alireza Khorsand Komachal, Aboutourabzadeh Seyed Mohammad, Gholamreza Karimi, Javad Behravan, Khalil Abnous, Leila Etemad, Hossein Kamali
PURPOSE: Some aromatase inhibitors are FDA-approved agents as first-line therapy in the treatment of endocrine-responsive breast cancer. In this study, we aimed to develop new azole derivatives with higher specificity and potency. METHODS: New aromatase inhibitors were designed by Molecular Operating Environment (MOE) software and synthesized in a one-step SN2 reaction. These compounds were characterized by melting point, 1H- and 13C-NMR, elemental analysis and mass spectra...
January 15, 2018: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29332834/direct-inlet-probe-ion-mobility-spectrometry
#18
Andriy Kuklya, Lokman Coban, Florian Uteschil, Klaus Kerpen, Ursula Telgheder
Direct inlet probe (DIP) was used as an introduction and a pre-separation step for atmospheric pressure photoionization time-of-flight ion mobility spectrometry (APPI-TOF-IMS) for the first time. IMS is an analytical technique used to separate and identify ionized molecules in the gas phase and under atmospheric pressure based on their mobility. The utilization of DIP prior to IMS gives the possibility to introduce the analytes into the gas phase and provides an additional separation based on their vapor pressure...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29332586/recent-developments-on-multi-target-directed-tacrines-for-alzheimer-s-disease-i-the-pyranotacrines
#19
Alejandro Romero, Jose Marco-Contelles
Tacrine was the first drug to displayed beneficial effects on cognitive impairment of Alzheimer disease (AD) patients. Unfortunately, many treated patients displayed related hepatotoxicity, and hence this drug was withdrawn. Notwithstanding, recent efforts have been directed to design small tacrine analogues targeting the underlying pathogenic mechanisms of AD. In this context, we have developed a number of pyranotacrines by changing the benzene fused ring in tacrine by a 4H-pyran. Based on this strategy, in this account we will show the tacrine analogues that we have designed, synthesized and evaluated as potential multipotent agents for AD in the last years...
January 12, 2018: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/29332585/new-tacrines-as-anti-alzheimer-s-disease-agents-ii-the-benzo-chromenopyranotacrines
#20
Maria J Oset-Gasque, Jose Marco-Contelles
Tacrine was the first drug approved by FDA (US) for the treatment of Alzheimer's disease suffering patients. Nowadays, this agent has been withdrawn from the clinics due to secondary effects, among them, and the most important, its hepatotoxicity. However, the research on new tacrine analogues devoid of these therapeutically undesirable effects, but benefiting of their high and well known positive cholinergic power, has produced a number of new non-hepatotoxic tacrines. In this context, in our laboratory, in the last years we have prepared a new heterocyclic tacrines by changing the benzene ring present in tacrine by appropriate heterocyclic motifs...
January 12, 2018: Current Topics in Medicinal Chemistry
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