RAF inhibitors such as vemurafenib and dabrafenib block B-RAF-mediated cell proliferation and achieve meaningful clinical benefit in the vast majority of patients with B-RAFV600E-mutant melanoma. However, some patients do not respond to this regimen, and nearly all progress to therapeutic resistance. We employed a pooled RNA interference screen targeting >16,500 ...

Recent evidence has challenged the default assumption that all DNA reactive alkylating agents exhibit a linear dose-response. Emerging evidence suggests that the model alkylating agents; methyl- and ethyl-methanesulfonate (MMS and EMS) and methyl- and ethyl-nitrosurea (MNU and ENU) observe a non-linear dose-response with a no observed genotoxic effect level (NOGEL). ...

Sphingolipids are known to have diverse properties and physiological functions. These distinctive lipids have been identified in wheat bran, a food well known for its chemopreventative activities. However, the complete profile of sphingolipids in wheat bran and their contributions to the cancer preventive effect of wheat bran have not been ...

The past 20 years have witnessed extraordinary advances in the field of cytogenetics, with the discovery that a multitude of neoplasms is characterized by identifiable chromosomal changes. The ability of Cytogenetics to aid in the identification and precise classification of a variety of neoplasms has not gone unnoticed by Cytology. ...

KRAS is an attractive pancreatic ductal adenocarcinoma (PDAC) therapeutic target. E3 ligase is thought to be the component of the ubiquitin conjugation system that is directly responsible for substrate recognition. In this study, an engineered E3 ubiquitin ligase (RC-U) was generated to target the KRAS oncoprotein for ubiquitination and degradation. ...

Understanding the interaction of small metal clusters and isolated atoms with oxide surfaces is crucial in order to rationalize the properties of heterogeneous catalysts composed of sub-nanometer metal particles dispersed on an oxide support. The interaction with the oxide surface can significantly alter the original properties of the metal deposit. ...

Abstract Background: Histopathologic findings of gonadal torsion in neonates and infants (GTNI) are poorly defined in the literature. We describe herein the histopathologic spectrum of gonadal torsion (GT) with emphasis on the pediatric population and on features specific for NI (<=1 year of age). Design: Twenty-five cases of GTNI (6 ...

Exercise training ameliorates age-related impairments in endothelium-dependent vasodilation in skeletal muscle arterioles. Additionally, exercise training is associated with increased superoxide production. The purpose of this study was to determine the role of superoxide and superoxide-derived reactive oxygen species (ROS) signaling in mediating endothelium-dependent vasodilation of soleus muscle resistance arterioles from ...

We report a dramatically improved synthesis of colloidal gold nanorods (NRs) using a binary surfactant mixture composed of hexadecyltrimethylammonium bromide (CTAB) and sodium oleate (NaOL). Both thin (diameter < 25 nm) and thicker (diameter > 30 nm) gold NRs with exceptional monodispersity and broadly tunable longitudinal surface plasmon resonance can ...

The snake venom component rhodocetin-αβ (RCαβ) stimulates endothelial cell motility in an α2β1 integrin-independent manner. We aimed to elucidate its cellular and molecular mechanisms. We identified neuropilin-1 (Nrp1) as a novel target of RCαβ by protein-chemical methods. RCαβ and vascular endothelial growth factor (VEGF)-A avidly bind to Nrp1. Instead of ...

Goldstein BI, Liu S-Min, Schaffer A, Sala R, Blanco C. Obesity and the three-year longitudinal course of bipolar disorder. Bipolar Disord 2013: 00: 000-000. © 2013 John Wiley & Sons A/S.Published by Blackwell Publishing Ltd. Objectives:  Despite substantial cross-sectional evidence that obesity is associated with an increased medical and psychiatric ...

The signaling cascades mediated by G-protein coupled receptors (GPCRs) exhibit a wide spectrum of spatial and temporal response properties to fulfill diverse physiological demands. However, the mechanisms that shape the GPCR's signaling response are not well understood. In this study we replaced cone transducin α (cTα) for rod transducin α ...

Background:The United Kingdom performs poorly in international comparisons of colorectal cancer survival with much of the deficit owing to high numbers of deaths close to the time of diagnosis. This retrospective cohort study investigates the patient, tumour and treatment characteristics of those who die in the first year after diagnosis ...

Background: There is increasing evidence that oxidative stress is one of the key factors for progression of endometriosis. In this prospective controlled trial, we measured 6 different biomarkers of oxidative stress targeting protein, lipid, and DNA to quantify the severity and progression of endometriosis and establish a diagnostic marker for ...

Reactions of pyridynes with cyclic urea and 1-methyl-2-oxazolidone were demonstrated. 3,4-Pyridyne and 2,3-pyridyne were reacted with N,N-dimethylimidazolidone, N,N-dimethylpropylene urea, and 1-methyl-2-oxazolidone to give the corresponding pyridodiazepines, pyridodiazocines, and pyridooxazepines, respectively.

ABSTRACT BACKGROUND: Presently, there is insufficient information to compare the value of daily diaries versus retrospective questionnaires for assessing symptoms in relationship to asthma control in clinical trials. Daily symptom diaries are often burdensome to gather, incomplete, susceptible to fabrication and of questionable reliability. There is also concern that retrospective ...

Presurgical language mapping for patients with lesions close to language areas is critical to neurosurgical decision-making for preservation of language function. As a clinical noninvasive imaging technique, functional MRI (fMRI) is used to identify language areas by measuring blood-oxygen-level dependent (BOLD) signal change while patients perform carefully timed language vs. ...

The Single Particle Irradiation system to Cell (SPICE) facility at the National Institute of Radiological Sciences (NIRS) is a focused vertical microbeam system designed to irradiate the nuclei of adhesive mammalian cells with a defined number of 3.4 MeV protons. The approximately 2-μm diameter proton beam is focused with a ...

Background. Health professionals and researchers have become increasingly interested in biomarkers that help them in diagnosis of infections with recent growing attention to procalcitonin (PCT) and pro-adrenomedullin (proADM).Methods. This study compares pro-adrenomedullin (proADM) to procalcitonin (PCT) as diagnostic and prognostic biomarkers of infection in febrile patients with hematologic malignancies (HMs). From June ...

Legionella pneumophila, an intracellular parasite of protozoa, possesses a distinct dimorphic life cycle that alternates between the vegetative replicative form and the resilient but highly infectious cyst form. Previously, temporally expressed heterodimeric IHF was shown to be required for differentiation into the cyst form. However, the precise regulatory mechanisms controlling ...

The purpose of this study was to examine the effects of virtual reality simulation (VRS) on learning outcomes and retention of disaster training. The study used a longitudinal experimental design using two groups and repeated measures. A convenience sample of associate degree nursing students enrolled in a disaster course was ...

Human beings have been credited with unparalleled capabilities for digital prehension grasping. However, grasping behaviour is widespread among tetrapods. The propensity to grasp, and the anatomical characteristics that underlie it, appear in all of the major groups of tetrapods with the possible exception of terrestrial turtles. Although some features are ...

Glycosyltransferases (GTs) are a ubiquitous group of enzymes that catalyze the transfer of sugar moieties from activated donor molecules to specific acceptor molecules, forming glycosidic bonds. Nucleotide-sugars, lipid phosphate sugars and phosphate sugars can act as activated donor molecules while acceptor substrates involve carbohydrates, proteins, lipids, DNA and also, numerous ...

OBJECTIVES: The pterocarpanquinone LQB-118, previously demonstrated to be effective in vivo via oral delivery, was investigated for its mechanism in selective parasite killing. METHODS: Oxidative stress in Leishmania amazonensis was analysed by evaluating reactive oxygen species (ROS) production (2',7'-dichlorodihydrofluorescein diacetate) and the loss of mitochondrial membrane potential (ΔΨ(m)) using rhodamine, ...

Henna E, Hatch JP, Nicoletti M, Swann AC, Zunta-Soares G, Soares JC. Is impulsivity a common trait in bipolar and unipolar disorders? Bipolar Disord 2013: 00: 000-000. © 2013 John Wiley & Sons A/S.Published by Blackwell Publishing Ltd. Objectives:  Impulsivity is increased in bipolar and unipolar disorders during episodes and ...

ABSTRACT: BACKGROUND: Dalmatia is an interesting place to study the use of wild greens as it lies at the intersection of influence of Slavs, who do not usually use many species of wild greens, and Mediterranean culinary culture, where the use of multiple wild greens is common. The aim of ...

Abstract In the present study, electrophoretic deposition (EPD) was used to obtain dense layers of TiO¬2 in four organic media, methaol, ethanol, 1-propanol and butanol with different TiO2 nanoparticles concenteration of 1-8 (g/lit). Microstructural study of the obtained layers by scanning electron (SEM) and optical microscope (OM) revealed that the ...

Acute promyelocytic leukemia is characterized by the rearrangement of the retinoic acid receptor alpha (RARA) gene and its fusion with other genes. We report a novel case of variant acute promyelocytic leukemia with the karyotype der(2)t(2;17)(q32;q21). Array comparative genomic hybridization revealed distinct chromosome breakpoints within the RARA and oligonucleotide/oligosaccharide-binding fold ...

Glomus tumor is a rare predominantly benign soft tissue tumor. Lower respiratory tract is an uncommon site of origin of glomus tumor and hence endobronchial glomus tumor is extremely rare. This is mostly benign and identified incidentally on imaging. Diagnosis is confirmed by immunohistochemical staining and resection is the treatment ...

Ironing out a solution: Chemical and visible-light-driven water oxidation by iron complexes and iron salts at pH 7-9 has been investigated. The iron complexes and salts act as precatalysts to produce α-Fe(2) O(3) nanoparticles that are the real catalyst for the water oxidation with a turnover number over 1000.

ABSTRACT: BACKGROUND: More than 70% of patients with depression who see their doctors experience insomnia. Insomnia treatment is a very important link for depression treatment. Furthermore, antidepression treatment is also important for depression insomnia. In acupuncture, LU-7 (Lie Que) and KID-6 (Zhao Hai), which are two of the eight confluence ...

Regulations in the United States require animal biosafety level 3 (ABSL-3) or biosafety level 3 agriculture (BSL-3-Ag) containment for many endemic zoonotic pathogens and etiologic agents of foreign animal diseases. In an effort to protect public health, billions of dollars were invested in regulatory programs over many years to reduce ...

ABSTRACT: BACKGROUND: Genetic networks control cellular functions. Aberrations in normal cellular function are caused by mutations in genes that disrupt the fine tuning of genetic networks and cause disease or disorder. However, the large number of signalling molecules, genes and proteins that constitute such networks, and the consequent complexity of ...

Development of calcific aortic valve stenosis involves multiple signaling pathways, which may be modulated by peroxisome proliferator-activated receptor-γ). This study tested the hypothesis that pioglitazone (Pio), a ligand for peroxisome proliferator-activated receptor-γ, inhibits calcification of the aortic valve in hypercholesteremic mice. Low density lipoprotein receptor(-/-)/apolipoprotein B(100/100) mice were fed a ...

Vectors based on vaccinia virus (VACV), the vaccine used to eradicate smallpox, are currently popular candidates for the vaccination against numerous infectious diseases including malaria and AIDS. Although VACV induces robust cellular and humoral responses, enhancing the safety and efficacy of these vectors remains an important area of research. Here ...

Oxides play a central role in important industrial processes, includingapplications such as the production of renewable energy, remediation of environmental pollutants, and the synthesis of fine chemicals. They were originally used as catalyst supports and were thought to be chemically inert, but now they are used to build catalysts tailored ...

A sensitive and specific triage of patients with primary or secondary headache is a major concern in evaluating pediatric headache patients. History and physical examination are the major tools for differentiating primary headache disorders from symptomatic headaches caused by defined pathologies. If the criteria of the International Headache Society for ...

ABSTRACT: BACKGROUND: Plant cell walls are complex multicomponent structures that have evolved to fulfil an essential function in providing strength and protection to cells. Hemicelluloses constitute a key component of the cell wall and recently a number of the genes thought to encode the enzymes required for its synthesis have ...

Multilevel operation in resistive switching memory (RRAM) based on HfO(x) is demonstrated through variable sizes and orientations of the conductive filament. Memory states with the same resistance, but opposite orientation of defects, display a different response to an applied read voltage, therefore allowing an improvement of the information stored in ...

OBJECTIVESImplantation of an annuloplasty ring is an essential component of a durable mitral valve repair. Currently available off-the-shelf rings still do not cover all the variations in mitral annulus anatomy and pathology from subject to subject. Computed tomography (CT) and echo imaging allow for 3-D segmentation of the mitral valve ...

BACKGROUND: North America's first supervised injection facility-Insite-opened in Vancouver in 2003 under a special federal legal exemption. Insite has faced significant political and legal opposition, which culminated in a recent Supreme Court of Canada ruling that ordered the federal Minister of Health to extend the facility's exemption and cited evidence ...

Amorfrutins are a family of natural products with high affinity to the peroxisome proliferator-activated receptor γ (PPARγ), a nuclear receptor regulating lipid and glucose metabolism. The PPARγ agonist rosiglitazone increases insulin sensitivity and is effective against type II diabetes, but has severe adverse effects including weight gain. Amorfrutins improve insulin ...

A trans-packaging system for hepatitis C virus (HCV) replicons lacking envelope glycoproteins was developed. The replicons were efficiently encapsidated into infectious particles after expression in trans of homologous HCV envelope proteins under the control of an adenoviral vector. Interestingly, expression in trans of core or core, p7 and NS2 with ...

SUMMARY The incidence of active tuberculosis (TB) and latent tuberculosis infection (LTBI) in inmates and prison staff is higher than that in the general population. Mycobacterium tuberculosis-specific interferon-gamma release assays (IGRAs) provide more accurate diagnosis of M. tuberculosis infection with higher specificity than the tuberculin skin test (TST). To assess ...

Two views: The mechanism of the conjugate addition of linear aldehydes to nitro olefins has been investigated by two research groups. In spite of extensive experimental data, important questions remain unanswered (see scheme; TMS=trimethylsilyl, En=enamine).

ABSTRACT: BACKGROUND: Expansins are plant cell wall loosening proteins encoded by a large superfamily of genes, consisting of four families named EXPA, EXPB, EXLA, and EXLB. The evolution of the expansin superfamily is well understood in angiosperms, thanks to synteny-based evolutionary studies of the gene superfamily in Arabidopsis, rice, and ...

The magnetic properties of the triple-layered Sr(4)Ru(3)O(10) have been investigated by means of neutron scattering diffraction. At zero field we find that the magnetic moments are ferromagnetically coupled and oriented along the c-axis with no signatures of either long-range antiferromagnetic order or ferromagnetic components in the ab-plane. The field dependence ...

CB(1) inverse agonists (e.g., rimonabant) have been reported to produce adverse effects including nausea, emesis, and anhedonia that limit their clinical applications. Recent laboratory studies suggest that the effects of CB(1) neutral antagonists differ from those of such inverse agonists, raising the possibility of improved clinical utility. However, little is ...

During much of the past century, it was widely believed that phonemes-the human speech sounds that constitute words-have no inherent semantic meaning, and that the relationship between a combination of phonemes (a word) and its referent is simply arbitrary. Although recent work has challenged this picture by revealing psychological associations ...

Xeroderma pigmentosum (XP), a UV sensitivity syndrome characterized by skin hyperpigmentation, premature aging and increased skin cancer, is caused by defects in the nucleotide excision repair (NER) pathway. XP shares phenotypical characteristics with telomere-associated diseases like Dyskeratosis congenita and mouse models with dysfunctional telomeres, including mice deficient for telomerase (Terc-/- ...