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Results 551 - 600 of 2149
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Vinay Dass S - - 2012
4-1BB (CD137), a member of the TNF receptor superfamily, is an activation-induced T-cell costimulatory molecule. Signaling via 4-1BB upregulates survival genes, enhances cell division, induces cytokine production, and prevents activation-induced cell death in T cells. The importance of the 4-1BB pathway has been underscored in a number of diseases, including ...
Ansoborlo Eric - - 2012
The discovery of polonium (Po) was first published in July 1898 by P. and M. Curie. It was the first element to be discovered by the radiochemical method. Polonium can be considered as a famous but neglected element: only a few studies of polonium chemistry have been published, mostly between ...
Malingowski Andrew C - - 2012
The mechanism of Ni substitution into the oxide semiconductor InTaO(4) has been studied through a combination of structural and spectroscopic techniques, providing insights into its previously reported photoactivity. Magnetic susceptibility and X-ray absorption near-edge spectroscopy (XANES) measurements demonstrate that nickel is divalent within the host lattice. The combined refinement of ...
Zhai Dong - - 2012
The diffusion of o-, m-, and p-xylene in a FAU zeolite at 300-900 K was investigated using molecular dynamics simulations. Calculated self-diffusion coefficients of xylene isomers showed that the mobility of p-xylene was the fastest, m-xylene the second fastest, and o-xylene the slowest in the FAU zeolite at the same ...
Galazka Krystyna - - 2012
INTRODUCTION: The presence of the aggressive phenotype of the tumor seems to be indicated by the local infiltration of cancer cells and by the development of metastases in the lymph nodes. This phenotype is related to the intensity of the suppressive profile of the tumor microenvironment. The aim of our ...
Koda Masanori - - 2012
In this study, we performed NMR-based metabolic profiling of major rice wines (Japanese sake, Chinese Shaoxing wine, and Korean makgeolli). In the <sup>1</sup>H NMR spectra, the rice wines showed broad resonances in the region of about 7.9-9.0 ppm. These resonances showed many and complex correlations with approximately 0.5-4.5 ppm in ...
Yoshimura Koji - - 2012
AIMS: To investigate whether objective cardiovascular parameters have an independent association with nocturnal voiding in women. METHODS: Thirty-two parameters derived from questionnaires, and anthropometric, physiological and biochemical measures of 5,980 women were applied for analysis. Nocturnal voiding was assessed by the International Prostate Symptom Score and the Overactive Bladder Symptom ...
Windell Deborah - - 2012
BACKGROUND: Understanding perceived influences on recovery following a first episode of psychosis could help improve services. MATERIAL: Thematic analysis was used to examine important influences on early recovery identified by 30 individuals receiving services in an early intervention programme. DISCUSSION: Social support, medication, meaningful activities and lifestyle modification were identified ...
Karatzanis Alexander D - - 2012
BACKGROUND AND OBJECTIVE: Base-of-tongue carcinoma is a relatively rare disease with aggressive behavior and poor prognosis. Up to date no consensus exists regarding the ideal management strategy for each stage of the disease. This study aims to evaluate the experience of a single head and neck oncology center in the ...
Xu Zhichuan - - 2012
The oxidation of AuCu nanoparticles was studied as a function of composition and temperature. Oxidation rates at 110 °C were higher for NPs with higher Cu content, showing that Au stabilized the Cu. Electrochemistry measurements show that AuCu could be a promising catalyst for lowering the over potential of CO(2) ...
Au-Yeung Ho Yu - - 2012
A reaction-based strategy exploiting cobalt-mediated oxidative C-O bond cleavage affords a selective turn-on fluorescent probe for paramagnetic Co(2+) in water and in living cells.
Madsen Charlotte S - - 2012
We have designed and synthesised a double-headed nucleotide that presents two nucleobases in the interior of a dsDNA duplex. This nucleotide recognises and forms Watson-Crick base pairs with two complementary adenosines in a Watson-Crick framework. Furthermore, with judicious positioning in complementary strands, the nucleotide recognises itself through the formation of ...
Silva Pedro Jorge - - 2012
Substituted pyrroles may be synthesized from selected 1,2-pyridazines through a reductive ring contraction involving the addition of four electrons and four protons. Our density functional theory computations of this reaction mechanism show that the first reduction event must be preceded by the uptake of one proton by 1,2-pyridazine, and that ...
Thor Maria - - 2012
Background and purpose. The purpose of this study was to evaluate the performance of gantry angle optimisation (GAO) compared to equidistant beam geometry for two inverse treatment planning systems (TPSs) by utilising the information obtained from a range of treatment plans. Material and methods. The comparison was based on treatment ...
Hanumanthappa Pradeep - - 2012
In the present report, 3D-QSAR analysis was executed on the previously synthesized and evaluated derivatives of isoquinolin-1-ones and quinazolin-4-ones; potent inhibitors of tumor necrosis factor α (TNFα). Statistically significant 3D-QSAR models were generated using 42 molecules in the training set. The predictive ability of models was determined using a randomly ...
Lee Eunjung - - 2012
We propose a new method to produce admittivity images of the breast for the diagnosis of breast cancer using electrical impedance tomography (EIT). Considering the anatomical structure of the breast, we designed an electrode configuration where current-injection and voltage-sensing electrodes are separated in such a way that internal current pathways ...
Weigel Matthias - - 2012
This article introduces an effective b-factor b(TSE) for turbo spin echo (TSE) sequences to quantify their inherent diffusion sensitivity. b(TSE) is investigated for a broad variety of two-dimensional- and three-dimensional-TSE sequences using constant and varying flip angles (transitions between pseudo steady states, SPACE, VISTA, Cube, etc.). The inherent TSE diffusion ...
Cianfarani S - - 2012
Intrauterine growth retardation predisposes toward long-term morbidity from type 2 diabetes and cardiovascular disease. To explain this association, the concept of programming was introduced to indicate a process whereby a stimulus or insult at a critical period of development has lasting or lifelong consequences on key endocrine and metabolic pathways. ...
Koeniger Andreas - - 2012
The simultaneous trapping of a large number of sedimenting Au colloids by optical radiation forces has been studied in detail. The particles are collected by a convergent laser beam and compressed against gravity and osmotic pressure at the upper window of the cell, thereby forming a dense colloidal gas. A ...
Tell R A - - 2012
We conducted a pilot study to assess magnetic field levels in electric compared to gasoline-powered vehicles, and established a methodology that would provide valid data for further assessments. The sample consisted of 14 vehicles, all manufactured between January 2000 and April 2009; 6 were gasoline-powered vehicles and 8 were electric ...
Theile Christopher S - - 2012
Here we present new routes for the efficient syntheses of 6,5'-(S)- and 6,5'-(R)-cyclouridine. The syntheses utilize readily accessible uridine as a starting material. This route to the R diastereomer is significantly more efficient than previous synthetic efforts, allowing us to obtain large amounts of pure material for future biological testing.
Chokri Aziz - - 2012
The vasodilatory effect of Globularia alypum L. (GA) extract was evaluated in rat mesenteric arterial bed pre-contracted by continuous infusion of phenylephrine (2-4 ng/mL). Bolus injections of GA elicited dose-response vasodilation, which was abolished after endothelium removal. Addition of a nitric oxide synthase inhibitor, N(G)-nitro-l-arginine methyl ester (100 µmol/L), alone or in ...
Liu Ying Dan - - 2012
A metal-organic framework, Cu(3)(BTC)(2), was synthesized and applied as an electro-responsive electrorheological material dispersed in insulating oil. Powder of crystalline Cu(3)(BTC)(2) exhibited excellent chain-like structures and controllable rheological properties in an applied electric field.
Hendrik - - 2012
A novel series of polycyclic amines, containing nitrogen monoxide donating moieties, were synthesised and tested for calcium channel and N-methyl-D-aspartate receptor modulating activity. The synthesised compounds were classified into two groups, based on their nitrogen monoxide donating moieties: unsaturated nitro compounds (1, 2 and 3) and nitro esters, or nitrates ...
Gafni-Kane Adam - - 2012
AIMS: To enhance the interpretability of the PFDI-20 by establishing a score distribution for women in the general population and to determine whether scores correspond with urinary and anal incontinence (UI and AI). METHODS: Subjects recruited during Twins Day Festivals from 2004 to 2009 completed a survey assessing for stress ...
Nagel G - - 2012
Background  Little is known about the associations of metabolic aberrations with malignant melanoma (MM) and nonmelanoma skin cancer (NMSC). Objectives  To assess the associations between metabolic factors (both individually and combined) and the risk of skin cancer in the large prospective Metabolic Syndrome and Cancer Project (Me-Can). Methods  During a ...
Moura Cristiano - - 2012
This study estimated the prevalence of negative self-perception of smile because of occlusion abnormalities and investigated their association according to standard clinical criteria. The sample consisted of 1290 randomly selected Brazilian adolescent boys and girls aged 12-16 years. The outcome of interest was dissatisfaction with smile, and data were collected ...
Gottenberg Jacques-Eric - - 2012
OBJECTIVE: To identify a specific pattern of serum cytokines that correlates with the diagnosis, activity and severity of rheumatoid arthritis (RA) in patients with early RA as well as with the level of serum markers of B cell activation.METHODS: Serum interleukin (IL)-1β, IL-1 receptor antagonist (IL1-Ra), IL-2, IL-4, IL-6, IL-10, ...
Faezizadeh Zohreh - - 2012
Telomerase has been proposed as a novel and potentially selective target in cancer therapy. Silymarin, which is a standardized mixture of flavonolignans from the medical plant Silybum marianum, has potent effects against various types of cancer cells, but its effect on telomerase activity in the human leukemia cell line K562 ...
Ricard J D - - 2012
Use of high flow nasal cannula oxygen (HFNC) is increasingly popular in adult ICUs for patients with acute hypoxemic respiratory failure. This is the result of the successful long-term use of HFNC in the neonatal field and recent clinical data in adults indicating beneficial effects of HFNC over conventional facemask ...
Adler Andy - - 2012
Breathing moves volumes of electrically insulating air into and out of the lungs, producing conductivity changes which can be seen by electrical impedance tomography (EIT). It has thus been apparent, since the early days of EIT research, that imaging of ventilation could become a key clinical application of EIT. In ...
Wu Chih Yuan - - 2012
A 1D motif usually comprises conserved essential residues involved in catalysis, ligand binding, or maintaining a specific structure. However, it cannot be easily detected in proteins with low sequence identity because it is difficult to (1) identify protein sequences suspected to contain the motif, and (2) align sequences with little ...
Yu Zhangsen - - 2012
Fluorescence imaging technique has been used for imaging of biological cells and tissues in vivo. The Cd-free luminescent quantum dots conjugating with a cancer targeting ligand has been taken as a promising biocompatibility and low cytotoxicity system for targeted cancer imaging. This work reports the synthesis of fluorescent-doped core/shell quantum ...
Olsen Anne Helene - - 2012
An organised mammography screening programme was gradually implemented in Norway during the period 1996 to 2004. Norwegian authorities have initiated an evaluation of the programme. This study focused on breast cancer mortality. Using Poisson regression we compared the change in breast cancer mortality from before to during screening in four ...
Li Hui - - 2012
BACKGROUND: Tissue factor (TF) is a significant risk factor for tumor growth and hepatic metastasis in patients with colorectal cancer (CRC). This study aimed to investigate whether hyperthermia has synergistic anti-tumor effects with TF knockdown in suppressing CRC progression and metastasis in vitro and in vivo. METHODS: Human colorectal cancer ...
Mathioudakis Christos - - 2012
We employ empirical tight-binding simulations on strained tetrahedral amorphous carbon and diamond nanocomposite networks. For each applied strain, the optoelectronic properties are monitored through the absorption coefficient and the dielectric function. These lead to the optical gaps and are able to quantify the amount of disorder in the structures. We ...
Taskin Halit Eren - - 2012
Over the last decade, there has been a significant progress in general surgical applications of robotic surgery. Multiple groups have reported safe and effective techniques for robotic adrenalectomy. Our aim in this review is to describe these techniques and summarize the literature on outcomes. J. Surg. Oncol © 2012 Wiley ...
Saino Nicola - - 2012
1. Longevity is a major determinant of individual differences in Darwinian fitness. Several studies have analyzed the stochastic, time-dependent causes of variation in longevity, but little information exists from free-ranging animal populations on the effects that environmental conditions and phenotype early in ontogeny have on duration of life. 2. In this long-term ...
Jiang Jiahua - - 2012
Aim. The objective of this study was to evaluate the combined effect of a known galectin-3 inhibitor, PectaSol-C modified citrus pectin (MCP), and 2 novel integrative polybotanical compounds for breast and prostate health, BreastDefend (BD) and ProstaCaid (PC), on invasive behavior in human breast and prostate cancer cells in vitro, ...
Xing James Z - - 2012
Aims:  To develop a novel Vero Cell Assay which implements a real-time cell electronic sensing (RT-CES) system for the determination of the presence of verotoxin-producing Escherichia coli (VTEC). The assay overcomes the major drawbacks in conventional Vero Cell assay, e.g. labour-intensive and time consuming. Methods and Results:  Cells were grown ...
Pinto da Silva Luís - - 2012
Firefly luciferase catalyzes a light-emitting reaction in which an excited-state product is formed. Both experimental and theoretical methodologies are used to study this system, and the reactions catalyzed by luciferase are relatively well characterized. However, the mechanism by which an excited-state product is formed is still unknown. This Minireview deals ...
Xu Dan - - 2012
Conventional 1D, spatially nonselective fat saturation can generate uncrushed fat signals in areas far outside the imaging slice where crushers are weak because of reduced gradient linearity. These fat signals can corrupt in-slice water signal, and in functional MRI, they can manifest themselves as artifacts such as clouds in image ...
Sengupta Abhigyan - - 2012
Flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN) are derivatives of riboflavin (RF), a water-soluble vitamin, more commonly known as vitamin B(2) . Flavins have attracted special attention in the last few years because of the recent discovery of a large number of flavoproteins. In this work, these flavins are used ...
Qi Ting - - 2012
A new helical aromatic oligoamide foldamer, bearing triethyleneglycol side chains for solubility in a broad range of media, was prepared. The stability of the helical conformation was assessed in various solvents and shown to vary greatly and unexpectedly. Stability was remarkably enhanced in methanol-water mixtures.
Khan Khalid Mohammed - - 2012
Syntheses of thirty 2,4,6-trichlorophenylhydrazine Schiff bases 1-30 were carried out and evaluated for their in vitro DPPH radical and super oxide anion scavenging activities. Compounds 1-30 have shown a varying degree of DPPH radical scavenging activity and their IC50 values range between 4.05-369.30 µM. The compounds 17, 28, 18, 14, ...
Todo Tsuyoshi - - 2012
Antibodies targeting T cells and B cells are increasingly used for immunosuppression in clinical transplantation. However, the impact of T-cell depletion by antibodies on B-cell homeostasis is poorly understood. Using a mouse model of allosensitization with skin allograft, we investigated whether targeting T cells by anti-CD3ε alters peripheral B-cell homeostasis ...
Zhang Lei - - 2012
Xanthatin, a natural bioactive compound of sesquiterpene lactones, was isolated and purified from air-dried aerial part of Xanthium sibiricum Patrin ex Widder. In the present study, we demonstrated the significant antiproliferative and proapoptotic effects of xanthatin on human gastric carcinoma MKN-45 cells. MTS assay showed that xanthatin produced obvious cytotoxicity ...
Cécile Monard - - 2012
The impact of the soil matric potential on the relationship between the relative abundance of degraders and their activity and on the spatial distribution of both at fine scales was determined in order to understand the role of environmental conditions in the degradation of organic substrates. The mineralisation of (13) ...
Vandiver Jeremy W - - 2012
Intravenous unfractionated heparin (UFH) remains an important therapeutic agent, particularly in the inpatient setting, for anticoagulation. Historically, the activated partial thromboplastin time (aPTT) has been the primary laboratory test used to monitor and adjust UFH. The aPTT test has evolved since the 1950s, and the historical goal range of 1.5-2.5 ...
Schultz Anthony - - 2012
Two novel, macromolecular, constitutional isomers have been self-assembled from previously unreported terpyridine ligands in a three-component system. The terpyridine ligands were synthesized in high yields via a key Suzuki coupling; restrictions of the possible outcomes for self-assembly ultimately provided optimum conditions for isolation of either a molecular bowtie or its ...
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