bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of the likelihood of a selective CHK1 inhibitor (LY2603618) to inhibit CYP2D6 with desipramine as a probe substrate in cancer patients
Authors: Hynes Scott M. , Wickremsinhe Enaksha , Zhang Wei , Decker Rodney , Ott Jennifer , Chandler Jason , Mitchell Malcolm 
Published: October 2014

AbstractLY2603618 is a selective inhibitor of deoxyribonucleic acid damage checkpoint kinase 1 (CHK1) and has been in development for the enhancement of chemotherapeutic agents. The study described was to assess the potential interaction between LY2603618 and cytochrome P450 isoform 2D6 (CYP2D6) substrate desipramine in patients with cancer. Before clinical investigation, in silico simulations (using Simcyp®) were conducted. An open‐label, two‐period, fixed‐sequence study was planned in 30 patients with advanced or metastatic cancers, in which a 50 mg oral dose of desipramine was administered alone and in combination with 275 mg of LY2603618 (i.v. infusion). An interim analysis was planned after 15 patients completed both periods. Ratios of geometric least squares means (LSMs) of primary pharmacokinetic (PK) parameters and 90% repeated confidence intervals (RCIs) between desipramine plus LY2603618 and desipramine alone were calculated. Lack of an interaction was declared if the 90% RCI fell between 0.8 and 1.25. The LSM ratios (90% RCI) for areas under the plasma concentration–time curve from time zero to tlast (AUC[0‐tlast]) and to infinity (AUC[0‐∞]) and maximum plasma concentration (Cmax) were 1.14 (1.04, 1.25), 1.09 (0.99, 1.21) and 1.16 (1.05, 1.29). In silico simulations were predictive of clinical results. Single doses of 275 mg LY2603618 administered with 50 mg desipramine were generally well tolerated. In conclusion, no clinically significant interaction was observed between LY2603618 and desipramine in patients with cancer. In silico predictions of clinical results demonstrated that mechanistic and physiologically based PK approaches may inform clinical study design in cancer patients. Copyright © 2014 John Wiley & Sons, Ltd.
Interaction of Aβ(25–35) fibrillation products with mitochondria: Effect of small‐molecule natural products
Authors: Ghobeh Maryam , Ahmadian Shahin , Meratan Ali Akbar , Ebrahim‐Habibi Azadeh , Ghasemi Atiyeh , Shafizadeh Mahshid , Nemat‐Gorgani Mohsen 
Published: October 2014

ABTRACTThe 25–35 fragment of the amyloid β (Aβ) peptide is a naturally occurring proteolytic by‐product that retains the pathophysiology of its larger parent molecule, whose deposition has been shown to involve mitochondrial dysfunction. Hence, disruption of Aβ(25–35) aggregates could afford an effective remedial strategy for Alzheimer's disease (AD). In the present study, the effect of a number of selected small‐molecule natural products (polyphenols: resveratrol, quercetin, biochanin A, and indoles: indole‐3‐acetic acid, indole‐3‐carbinol (I3C)) on Aβ(25–35) fibrillogenesis was explored under physiological conditions, and interaction of the resulting structures with rat brain mitochondria was investigated. Several techniques, including fluorescence, circular dichroism, and transmission electron microscopy were utilized to characterize the aggregation products, and possible mitochondrial membrane permeabilization was determined following release of marker enzymes. Results demonstrate the capacity of Aβ(25–35) fibrils to damage mitochondria and suggest how small molecules may afford protection. While I3C appeared more effective in inhibiting the fibrillation process, all natural products behaved similarly in destabilizing preformed aggregates. It is concluded that elucidation of such protection may provide important insights into the development of preventive and therapeutic agents for AD. © 2014 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 102: 473–486, 2014.
Long-term outcomes following microwave ablation for liver malignancies
Authors: Leung U , Kuk D , D'Angelica M I , Kingham T P , Allen P J , DeMatteo R P , Jarnagin W R , Fong Y 
Published: October 2014

Abstract

Background
Microwave ablation has emerged as a promising treatment for liver malignancies, but there are scant long-term follow-up data. This study evaluated long-term outcomes, with a comparison of 915-MHz and 2·4-GHz ablation systems.

Methods
This was a retrospective review of patients with malignant liver tumours undergoing operative microwave ablation with or without liver resection between 2008 and 2013. Regional or systemic (neo)adjuvant therapy was given selectively. Local recurrence was analysed using competing-risk methods with clustering, and overall survival was determined from Kaplan–Meier curves.

Results
A total of 176 patients with 416 tumours were analysed. Colorectal liver metastases (CRLM) comprised 81·0 per cent of tumours, hepatocellular carcinoma 8·4 per cent, primary biliary cancer 1·7 per cent and non-CRLM 8·9 per cent. Median follow-up was 20·5 months. Local recurrence developed after treatment of 33 tumours (7·9 per cent) in 31 patients (17·6 per cent). Recurrence rates increased with tumour size, and were 1·0, 9·3 and 33 per cent for lesions smaller than 1 cm, 1–3 cm and larger than 3 cm respectively. On univariable analysis, the local recurrence rate was higher after ablation of larger tumours (hazard ratio (HR) 2·05 per cm; P &lt; 0·001), in those with a perivascular (HR 3·71; P = 0·001) or subcapsular (HR 2·71; P = 0·008) location, or biliary or non-CRLM histology (HR 2·47; P = 0·036), and with use of the 2·4-GHz ablation system (HR 3·79; P = 0·001). Tumour size (P &lt; 0·001) and perivascular position (P = 0·045) remained significant independent predictors on multivariable analysis. Regional chemotherapy was associated with decreased local recurrence (HR 0·49; P = 0·049). Overall survival at 4 years was 58·3 per cent for CRLM and 79·4 per cent for other pathology (P = 0·360).

Conclusion
Microwave ablation of liver malignancies, either combined or not combined with liver resection, and selective regional and systemic therapy resulted in good long-term survival. Local recurrence rates were low after treatment of tumours smaller than 3 cm in diameter, and those remote from vessels.
Rapid identif ication and comparative analysis of chemical constituents in herbal medicine Fufang decoction by ultra‐high‐pressure liquid chromatography coupled with a hybrid linear ion trap–high‐resolution mass spectrometry
Authors: Cao Gang , Chen Xiaocheng , Wu Xin , Li Qinglin , Zhang Hongyan 
Published: October 2014

AbstractThis study was conducted to reveal the relation between herbal medicine Fufang decoction and a single drug in terms of material base. Da‐Cheng‐Qi decoction (DCQD) was used as a model. Ultrahigh‐pressure liquid chromatography coupled with a hybrid linear ion trap–high‐resolution mass spectrometry (UHPLC‐LTQ‐Orbitrap) was applied to detect and identify the main chemical compounds. This technique was also employed to determine the different chemical components. Under optimized liquid chromatography and mass spectrometry conditions, 64 components, including iridoids, flavonoids, anthraquinones and coumarins, were separated and tentatively characterized in Da‐Cheng‐Qi decoction. After decoction, the contents of 18 compounds were markedly changed, and two components were no longer detected in Fufang decoction compared with single‐medicine decoction. The established method provided a good example for the rapid identification of complicated polar constituents in herbal medicine prescriptions. Copyright © 2014 John Wiley & Sons, Ltd.
[(IPent)PdCl2(morpholine)]: A Readily Activated Precatalyst for Room‐Temperature, Additive‐Free Carbon–Sulfur Coupling
Authors: Farmer Jennifer L. , Pompeo Matthew , Lough Alan J. , Organ Michael G. 
Published: October 2014

AbstractA series of new, easily activated NHC–PdII precatalysts featuring a trans‐oriented morpholine ligand were prepared and evaluated for activity in carbon‐sulfur cross‐coupling chemistry. [(IPent)PdCl2(morpholine)] (IPent=1,3‐bis(2,6‐di(3‐pentyl)phenyl)imidazol‐2‐ylidene) was identified as the most active precatalyst and was shown to effectively couple a wide variety of deactivated aryl halides with both aryl and alkyl thiols at or near ambient temperature, without the need for additives, external activators, or pre‐activation steps. Mechanistic studies revealed that, in contrast to other common NHC–PdII precatalysts, these complexes are rapidly reduced to the active NHC–Pd0 species at ambient temperature in the presence of KOtBu, thus avoiding the formation of deleterious off‐cycle PdII–thiolate resting states.
Kinetic Study of Heterogeneously Catalyzed Glucose Oxidation in a Stirred Cell
Authors: Ablasser Cornelia , Hilger Andreas , Hinrichsen Olaf 
Published: October 2014

AbstractLiquid phase oxidation of glucose to gluconic acid using Bi promoted Pd catalysts was studied in a stirred cell. Gas‐liquid mass transfer limitations are observed at lower but not at higher rotational speeds. The conversion and the deactivation of the Pd catalyst depend on the O2 concentration in the liquid phase. With decreasing glucose concentration, the reaction rate decreases leading to higher oxygen concentration in the liquid, which deactivates the catalyst due to over‐oxidation. Severe mass transfer limitations even at low Pd loadings could be attributed to intraparticle or liquid‐to‐solid mass transfer.
Residues and Organic Contaminants in Agricultural Soils in Intensive Agricultural Areas of Spain: A Three Years Survey
Authors: Padilla‐Sánchez Juan A. , Romero‐González Roberto , Plaza‐Bolaños Patricia , Garrido Frenich Antonia , Martínez Vidal José L. 
Published: October 2014

AbstractA three‐year study of the levels of pesticide residues and organic contaminants in agricultural soils has been carried out in an important intensive agricultural area in Spain. Although traditional farming practices are being replaced by integrated pest management programs (IPMs), extensive phytosanitary application and inadequate farm practices (e.g. burning of vegetable and plastic material) have been carried out during decades, and occurrence of residues and persistent pollutants was expected. The monitoring program was divided into three samplings (one per year), evaluating pesticides, polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls. In the first sampling, 38 agricultural soil samples were evaluated; multivariate analysis was used to select the most representative samples and continue the monitoring study. Then, the second and third samplings were performed to study the evolution of the concentration (including transformation products) of the compounds. Applying univariate and multivariate analysis, it was observed that PAHs (except anthracene and benzo[k]fluoranthene) were the most significant compounds, as well as some degradation products of banned pesticides (endosulfan ether, o,p′‐dichlorodiphenyldichloroethane and p,p′‐dichlorodiphenyldichloroethylene). Finally, a reduction of the concentration of contaminants was observed along the three years sampling period, indicating that the improved practices used in the area, such as IPMs, are having the desired effect regarding the reduction of contaminants in soil.
An investigation of how the texture surface of a fabric influences its instrumental color
Authors: Luo Lin , Tsang Ka Man , Shen Hui‐Liang , Shao Si‐Jie , Xin John H. 
Published: October 2014

AbstractIn this article, the influence of texture surface of a fabric on its instrumental color is investigated. While former studies have found it is difficult to establish a quantitative relationships between texture of fabric and its instrumental color (color difference and color attributes, such as lightness, chroma, and hue), this article investigates from a theoretical and empirical perspective the interaction between texture and color. Eighty four knitted cotton yarn dyed fabric samples in four color centers and 21 texture structures were used in this study. It is revealed that fabric samples with different texture surfaces define a set of lines with identical direction in the reflectance space, and thus the normalized reflectance curves of these samples are identical. In the CIEXYZ space, tristimulus values of these fabric samples define a line, and thus their chromaticity coordinates are constant. In the CIELAB space, however, linearity is lost due to the non‐linear transformation from the CIEXYZ space to the CIELAB space. The finding of this article has the potential to discount the influence of texture of a fabric on its color. Experiments show that the influence of texture on color for samples in the four color centers can be reduced by 79, 55, 71, and 57%, respectively comparing to the real measured color difference. © 2014 Wiley Periodicals, Inc. Col Res Appl, 40, 472–482, 2015
Electronic Properties of Transition‐Metal‐Decorated Silicene
Authors: Lee Youngbin , Yun Kyung‐Han , Cho Sung Beom , Chung Yong‐Chae 
Published: October 2014

AbstractThe electronic properties of 3d transition metal (TM)‐decorated silicene were investigated by using density functional calculations in an attempt to replace graphene in electronic applications, owing to its better compatibility with Si‐based technology. Among the ten types of TM‐doped silicene (TM–silicene) studied, Ti‐, Ni‐, and Zn‐doped silicene became semiconductors, whereas Co and Cu doping changed the substrate to a half‐metallic material. Interestingly, in cases of Ti‐ and Cu‐doped silicene, the measured band gaps turned out to be significantly larger than the previously reported band gap in silicene. The observed band‐gap openings at the Fermi level were induced by breaking the sublattice symmetry caused by two structural changes, that is, the Jahn–Teller distortion and protrusion of the TM atom. The present calculation of the band gap in TM–silicene suggests useful guidance for future experiments to fabricate various silicene‐based applications such as a field‐effect transistor, single‐spin electron source, and nonvolatile magnetic random‐access memory.
Alteration of key hyporheic functions through biological and physical clogging along a nutrient and fine‐sediment gradient
Authors: Hartwig Melanie , Borchardt Dietrich 
Published: October 2014

AbstractThe hyporheic zone bears key hydro‐ecological functions such as hydrological connectivity of surface and groundwater ecosystems and biogeochemical regulation of substance dynamics. These functions are controlled by the sediment permeability that in turn is affected by biological and physical clogging. A number of conceptual models have been developed on the interactions and feedbacks between these functionalities; surprisingly, comprehensive field data are scarce. Thus, the aim of this study was to assess these functions and their vulnerability along a stressor gradient of nutrient and fine‐sediment input at riffle scale. Three sampling sites along the Kharaa River (Northern Mongolia) were selected that represented conditions from being unaffected, affected by biological clogging and impaired by physical clogging. A significant impact on the hydrological connectivity was detected, as the vertical downward flux and the solute penetration depth decreased along the reaches. Simultaneously, the heterogeneity in biogeochemical patterns and the vertical extent of the oxygen gradients declined. Whilst biological clogging was apparently unstable and the biofilm supported the hyporheic organic carbon pool, it revealed to affect the two functions to a lesser extent when compared with physical clogging. In contrast, physical clogging seemed to be more permanent and restricted microbial metabolism to the uppermost centimetres, thus decreasing the active sediment depth. Moreover, fine‐sediment particles enhanced the sediment surface area, thereby creating a high respiration potential that resulted in high values of community respiration and subsequent oxygen depletion. Concluding, the control of fine‐sediment emissions has to be a priority issue in river restoration and catchment management. Copyright © 2014 John Wiley & Sons, Ltd.
Mechanical circulatory support improves diabetic control in patients with advanced heart failure
Authors: Mohamedali Burhan , Yost Gardner , Bhat Geetha 
Published: October 2014

AimsLeft ventricular assist devices (LVADs) are increasingly being used as life‐saving therapy for end‐stage advanced heart failure. Diabetes is prevalent in advanced heart failure patients. In this study, we sought to investigate the effects of mechanical circulatory support on diabetic parameters with LVAD implantation.Methods and resultsIn this retrospective study, data on 244 LVAD recipients between 2006 and 2013 were reviewed. Patients without history of diabetes, death within the first 3 months after LVAD implantation, heart transplantation after LVAD, or LVAD explantation were excluded from the study. Baseline demographic, laboratory, and echocardiographic information prior to LVAD placement and 6‐month follow‐up were obtained. Laboratory values indicative of diabetic control were found to improve significantly at 6 months post‐LVAD implantation (glycated haemoglobin, 7.2 vs. 6.1%, P < 0.0001; serum fasting glucose, 141 vs. 122 mg/dL, P = 0.003; mean daily insulin dose, 30 vs. 24 IU/day, P = 0.02). Additionally, the use of oral hypoglycaemic medication was successfully discontinued in six patients at 6 months post‐LVAD implantation.ConclusionsLong‐term LVAD therapy is associated with improvement in diabetic control which is probabvly due to improvements in cardiac output and normalization of biochemical derangements resulting from diabetes.
Assemblies of Alkaline‐Earth‐Metal Ions with o‐Tetramethyl‐Substituted Cucurbituril in the Presence of the Cadmium Tetrachloride Anion
Authors: Zhou Jia‐Jia , Yu Xin , Zhao Ying‐Chun , Xiao Xin , Zhang Yun‐Qian , Xue Sai‐Feng , Tao Zhu , Liu Jing‐Xin , Zhu Qian‐Jiang 
Published: October 2014

Abstracto‐Tetramethyl‐substituted cucurbituril (o‐TMeQ[6]), a polydentate ligand, has been synthesized and isolated in a controlled manner by using a dimer of dimethyl‐substituted glycoluril and a dimer of unsubstituted glycoluril. Coordination assemblies have been investigated by reactions between alkaline earth cations and o‐TMeQ[6] in the presence of [CdCl4]2–, a structure inducer, in HCl aqueous solution. X‐ray diffraction analysis revealed that o‐TMeQ[6] coordinates with Ca2+ or Sr2+ and forms centrosymmetric tetranuclear assemblies in the presence of [CdCl4]2–. [CdCl4]2– typically produces the “honeycomb effect” by forming honeycomb‐like frameworks, which assist metal ions in coordinating to o‐TMeQ[6]. The driving forces of this effect are the “outer‐surface interactions” of cucurbit[n]urils.
Catalytic Behaviour of Transition Metal Cations In Electrosynthesis and Growth of Nanostructure Conducting Polypyrrole Films On/Between the Passive Cu Interdigital Electrodes: Application In Gas Sensors
Authors: Alizadeh Naader , Ghoorchian Arash 
Published: October 2014

AbstractThe electrosynthesis of nanostructured polypyrrole (PPy) on copper interdigital electrodes (Cu‐IDEs) surfaces was performed by anodic oxidation of pyrrole in the presence of oxalic acid in aqueous solution (passivation technique) by potentiostatic method. Some divalent transition metal ions (Fe(II), Co(II), Ni(II), Cu(II), Zn(II)) as catalyst can be used to polymers growth on/between spacing between passive Cu‐IDEs by using potentiostatic technique. The morphology of the conducting films was examined by field emission scanning electron microscope, indicating a dependence of the film morphology to catalyst type. The PPy films on Cu‐IDEs were used to investigate the properties of the gas sensing ability.
Macroporous cryogel based spin column with immobilized concanavalin A for isolation of glycoproteins
Authors: Krenkova Jana , Cesla Petr , Foret Frantisek 
Published: October 2014

In this work we have developed a hydrophilic poly(hydroxyethyl methacrylate‐co‐poly(ethylene glycol) diacrylate) cryogel placed in the centrifugal filter device. The composition of the polymerization mixture as well as the polymerization conditions were optimized in order to prepare a material with bimodal pore size distribution with 20–50 μm flow through macropores and submicrometer pores in the polymer walls. The optimized, mechanically stable, highly porous, material was used for spin column lectin chromatography. The surface of the monolithic scaffold was activated by epichlorohydrin and used for immobilization of concanavalin A to provide the affinity supports for selective isolation of glycoproteins containing high mannose glycan structures. The performance of the developed lectin modified cryogels was evaluated by analyses of glycoprotein mixtures. The efficiency and selectivity of the affinity supports were confirmed by MALDI‐MS analysis.
Application of subspace identification technique to long‐term seismic response monitoring of structures
Authors: Loh Chin‐Hsiung , Chao Shu‐Hsien , Weng Jian‐Huang , Wu Tzu‐Hsiu 
Published: October 2014

SummaryThis paper addresses the issue of structural system identification using earthquake‐induced structural response. The proposed methodology is based on the subspace identification algorithm to perform identification of structural dynamic characteristics using input–output seismic response data. Incorporated with subspace identification algorithm, a scheme to remove spurious modes is also used to identify real system poles. The efficiency of the proposed method is shown by the analysis of all measurement data from all measurement directly. The recorded seismic response data of three structures (one 7‐story RC building, one midisolation building, and one isolated bridge), under Taiwan Strong Motion Instrumentation Program, are analyzed during the past 15 years. The results present the variation of the identified fundamental modal frequencies and damping ratios from all the recorded seismic events that these three structures had encountered during their service life. Seismic assessment of the structures from the identified system dynamic characteristics during the period of their service is discussed. Copyright © 2014 John Wiley & Sons, Ltd.
Characterization of Novel Aminobenzylcantharidinimides and Related Imides by Proton NMR Spectra and Their Effects on NO Induction
Authors: Tseng Ing‐Jy , Lin Pen‐Yuan , Sheu Shiow‐Yunn , Tung Wan‐Ni , Lin Ching‐Tung , Lin Mei‐Hsiang 
Published: October 2014

AbstractVarious acidic anhydrides including cantharidin were converted into corresponding aminobenzylcantharidinimide 3a and analogous imides 3b∼k (at the ortho, meta, and para positions) with 35%∼87% yields by reacting with aminobenzylamines and triethylamine. The two methyl side chains of cantharidinimides 3ao, 3am, and 3ap, and related imides had more than two chiral centers; the lone pair of electrons of nitrogen displayed a different chemical shift and coupling constant in H‐NMR spectra when the amino group of benzylamine was in the ortho position. These cantharidinimides had parent aniline, pyridine, and naphthalene plane structures, and the primary amine nucleophilicity and basicity might reflect the inductive electron’s negative effect on chemical shifts. We prepared cantharidinimides by heating the reactants cantharidin 1a, aliphatic and aromatic acid anhydrides, primary benzylic amines, and aniline derivatives to ca. 200 °C with 3 mL of dry toluene, and 1∼2 mL of triethylamine in high‐pressure sealed tubes (Buchi glasuster 0032) to produce cantharidinimides and their analogues in good yields. The para‐aminobenzylic imides showed greater inhibition of nitric oxide (NO) synthesis by NO synthase (NOS) than did ortho‐ and meta‐aminobenzylic imides. Compound 3fp, para‐aminobenzylic norbonane‐imide, had the most potent effect on inducible NOS among the tested compounds and showed 35% inhibition.