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Mari Kyllesø Halle, Ingvild Løberg Tangen, Hege Fredriksen Berg, Erling Andre Hoivik, Karen K Mauland, Kanthida Kusonmano, Anna Berg, Antoni Hurtado, Karl Henning Kalland, Anne M Øyan, Ingunn Stefansson, Olav K Vintermyr, Henrica M Werner, Ingfrid S Haldorsen, Jone Trovik, Helga B Salvesen, Camilla Krakstad
BACKGROUND: Despite successful implementation of drugs targeting the human epidermal growth factor receptor 2 (HER2) receptor in breast and gastric cancers, the potential of HER2 as a therapeutic target in other cancers has been less studied, including endometrial cancer. We investigated expression levels of HER2 (ERBB2) in a large cohort of endometrial cancer lesions, also including complex atypical hyperplasia and metastatic lesions. METHODS: 67 precursor lesions, 790 primary endometrial cancers and 383 metastatic lesions were investigated for HER2 expression in relation to clinicopathologic features and outcome...
November 23, 2017: British Journal of Cancer
Adam Volker, Deepak Kumar Prusty, Mathias Centola, Škugor Marko, Hannam Jeffrey, Julián Valero, Klöckner Bernhard, Michael Famulok
Photoregulation is among the most promising tools for development of dynamic DNA nanosystems, due to its high spatiotemporal precision, biocompatibility, and ease of use. So far, azobenzene and its derivatives have shown high potential in photocontrolling DNA duplex hybridization due to light-dependent photoisomerization. Despite many recent advances, sufficiently high photoswitching efficiency under conditions more suitable for work with DNA nanostructures are challenging. Here we introduce a pair of arylazopyrazoles as new photoswitches for efficient and reversible control of DNA hybridization achieved even at room temperature with a low number of required modifications...
November 23, 2017: Chemistry: a European Journal
Josep Casellas, Gerard Alcover-Fortuny, Coen de Graaf, Mar Reguero
Azo compounds are organic photochromic systems that have the possibility of switching between cis and trans isomers under irradiation. The different photochemical properties of these isomers make azo compounds into good light-triggered switches, and their significantly different geometries make them very interesting as components in molecular engines or mechanical switches. For instance, azo ligands are used in coordination complexes to trigger photoresponsive properties. The light-induced trans-to-cis isomerization of phenylazopyridine (PAPy) plays a fundamental role in the room-temperature switchable spin crossover of Ni-porphyrin derivatives...
November 23, 2017: Materials
Weiping Kong, Wenjiang Huang, Raffaele Casa, Xianfeng Zhou, Huichun Ye, Yingying Dong
Monitoring the vertical profile of leaf chlorophyll (Chl) content within winter wheat canopies is of significant importance for revealing the real nutritional status of the crop. Information on the vertical profile of Chl content is not accessible to nadir-viewing remote or proximal sensing. Off-nadir or multi-angle sensing would provide effective means to detect leaf Chl content in different vertical layers. However, adequate information on the selection of sensitive spectral bands and spectral index formulas for vertical leaf Chl content estimation is not yet available...
November 23, 2017: Sensors
Mitra Yoonessi, James Gaier, Muhammad Sahimi, Tyrone L Daulton, Richard B Kaner, Michael A Meador
We report on fabrication of a novel class of lightweight materials, polyimide-graphene nanocomposites (0.01-5 vol.%), with tunable electrical conductivity. The graphene polyimide nanocomposites exhibit an ultra-low graphene percolation threshold of 0.03 vol% and maximum dc conductivity of 0.94 S/cm, which we attribute to excellent dispersion, extraordinary electron transport in the well dispersed graphene, high number density of graphene nanosheets, and the π-π interactions between aromatic moieties of the polyimide and the carbon rings in graphene...
November 23, 2017: ACS Applied Materials & Interfaces
Mekala Sundaram, Nathanael I Lichti, Nicole J Olynk Widmar, Robert K Swihart
Seeds of many hardwood trees are dispersed by scatter-hoarding rodents, and this process is often mediated by the traits of seeds. Although numerous studies have linked seed traits to seed preference by rodents, little is known about how rodents forage for seeds when multiple desirable and undesirable seed traits are available simultaneously. Here, we adopt a novel method of designing choice experiments to study how eastern gray squirrels (Sciurus carolinensis) select for 6 traits (caloric value, protein content, tannin concentration, kernel mass, dormancy period and toughness of shell) among seeds...
November 23, 2017: Integrative Zoology
Huilin Pan, Kopin Liu, Adriana Caracciolo, Piergiorgio Casavecchia
Over the past ten years or so, great advances in our understanding of the dynamics of elementary (bimolecular) polyatomic reactions in the gas-phase have occurred. This has been made possible by critical improvements (a) in crossed molecular beam (CMB) instruments with rotating mass spectrometric detection and time-of-flight analysis, especially following the implementation of soft ionization (by tunable low energy electrons or vacuum-ultraviolet synchrotron radiation) for product detection with increased sensitivity and universal detection power, and (b) in REMPI-slice velocity map ion imaging (VMI) detection techniques in pulsed CMB experiments for obtaining product pair-correlated information through high-resolution measurements directly in the center of mass system...
November 23, 2017: Chemical Society Reviews
Hannah L Stern, Alexandre Cheminal, Shane R Yost, Katharina Broch, Sam L Bayliss, Kai Chen, Maxim Tabachnyk, Karl Thorley, Neil Greenham, Justin M Hodgkiss, John Anthony, Martin Head-Gordon, Andrew J Musser, Akshay Rao, Richard H Friend
Singlet exciton fission (SF), the conversion of one spin-singlet exciton (S1) into two spin-triplet excitons (T1), could provide a means to overcome the Shockley-Queisser limit in photovoltaics. SF as measured by the decay of S1 has been shown to occur efficiently and independently of temperature, even when the energy of S1 is as much as 200 meV less than that of 2T1. Here we study films of triisopropylsilyltetracene using transient optical spectroscopy and show that the triplet pair state (TT), which has been proposed to mediate singlet fission, forms on ultrafast timescales (in 300 fs) and that its formation is mediated by the strong coupling of electronic and vibrational degrees of freedom...
December 2017: Nature Chemistry
Tiia Maria Luukkonen, Mana M Mehrjouy, Minna Pöyhönen, Anna-Kaisa Anttonen, Päivi Lahermo, Pekka Ellonen, Lars Paulin, Niels Tommerup, Aarno Palotie, Teppo Varilo
BACKGROUND: The risk of serious congenital anomaly for de novo balanced translocations is estimated to be at least 6%. We identified two apparently independent families with a balanced t(1;12)(q43;q21.1) as an outcome of a "Systematic Survey of Balanced Chromosomal Rearrangements in Finns." In the first family, carriers (n = 6) manifest with learning problems in childhood, and later with unexplained neurological symptoms (chronic headache, balance problems, tremor, fatigue) and cerebral infarctions in their 50s...
November 23, 2017: Molecular Genetics & Genomic Medicine
Kaipeng Xie, Kai Zhang, Jing Kong, Cheng Wang, Yayun Gu, Cheng Liang, Tingting Jiang, Na Qin, Jibin Liu, Xuejiang Guo, Ran Huo, Mingxi Liu, Hongxia Ma, Juncheng Dai, Zhibin Hu
Piwi-like RNA-mediated gene silencing 1 (PIWIL1) has been identified as a novel extremely highly expressed cancer-testis (CT) gene in lung adenocarcinoma. However, the exact function and mechanism of PIWIL1 in lung adenocarcinoma remains unclear. Herein, we sought to investigate the role of PIWIL1 in the occurrence and development of lung adenocarcinoma. We examined the expression pattern of PIWIL1 in The Cancer Genome Atlas (TCGA) lung adenocarcinoma samples, and validated it by Real-Time PCR (RT-PCR) in additional 21 paired lung adenocarcinoma tissues and 16 normal tissues...
November 23, 2017: Cancer Medicine
Patricia Margaritte-Jeannin, Marie-Claude Babron, Catherine Laprise, Nolwenn Lavielle, Chloé Sarnowski, Myriam Brossard, Miriam Moffatt, Valérie Gagné-Ouellet, Adrien Etcheto, Mark Lathrop, Jocelyne Just, William O Cookson, Emmanuelle Bouzigon, Florence Demenais, Marie-Hélène Dizier
BACKGROUND: Genetic studies of eczema have identified many genes, which explain only 14% of the heritability. Missing heritability may be partly due to ignored Gene-Gene (G-G) interactions. OBJECTIVE: Our aim was to detect new interacting genes involved in eczema. METHODS: The search for G-G interaction in eczema was conducted using a two-step approach, which included as a first step, a biological selection of genes, which are involved either in the skin or epidermis development or in the collagen metabolism, and as a second-step, an interaction analysis of the selected genes...
November 23, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
Emily B Vander Schaaf, Rocio B Quinonez, Amanda C Cornett, Greg D Randolph, Kim Boggess, Kori B Flower
Objectives To determine acceptability and feasibility of a quality improvement (QI) collaborative in safety net dental practices, and evaluate its effects on financial stability, access, efficiency, and care for pregnant women and young children. Methods Five safety net dental practices participated in a 15-month learning collaborative utilizing business assessments, QI training, early childhood oral health training, and prenatal oral health training. Practices collected monthly data on: net revenue, no-show rates, total encounters, and number of encounters for young children and pregnant women...
November 22, 2017: Maternal and Child Health Journal
František Moravec, Diane P Barton
Based on light and scanning electron microscopical studies, a new nematode parasite, Capillaria appendigera n. sp. (Capillariidae), is described from the intestine of the goldbanded jobfish Pristipomoides multidens (Day) (Perciformes, Lutjanidae) from the Arafura Sea West, off the northern coast of Australia. The new species, belonging to the subgenus Procapillaria Moravec, 1987, differs from other congeneric species from fishes mainly in the length (0.92-1.13 mm), shape and structure of the spicule, obtuse spines on the spicule sheath and the structure of eggs...
November 22, 2017: Systematic Parasitology
B S Muddukrishna, Vasudev Pai, Richard Lobo, Aravinda Pai
In the present study, five important binary fingerprinting techniques were used to model novel flavones for the selective inhibition of Tankyrase I. From the fingerprints used: the fingerprint atom pairs resulted in a statistically significant 2D QSAR model using a kernel-based partial least square regression method. This model indicates that the presence of electron-donating groups positively contributes to activity, whereas the presence of electron withdrawing groups negatively contributes to activity. This model could be used to develop more potent as well as selective analogues for the inhibition of Tankyrase I...
November 22, 2017: Molecular Diversity
Junku Liu, Nan Guo, Xiaoyang Xiao, Kenan Zhang, Yi Jia, Shuyun Zhou, Yang Wu, Qunqing Li, Lin Xiao
In this study, we fabricate air-stable p-type multi-layered MoTe2 phototransistor using Au as electrodes, which shows pronounced photovoltaic response in off-state with asymmetric contact form. By analyzing the spatially resolved photoresponse using scanning photocurrent microscopy, we found that the potential steps are formed in the vicinity of the electrodes/MoTe2 interface due to the doping of the MoTe2 by the metal contacts. The potential step dominates the separation of photoexcited electron-hole pairs in short-circuit condition or with small V sd biased...
November 22, 2017: Nanoscale Research Letters
Jeffrey Markey, Jess Mace, Yvette Anderson, Tom D Wang
Importance: Otoplasty is performed to correct prominauris, one of the most common head and neck congenital deformities. Advances in combination hybrid approaches enable surgeons to achieve greater precision and accuracy. Objective: To describe a hybrid cartilage-modifying approach and evaluate the procedure's effectiveness and safety. Design, Setting, and Participants: Medical record review including patients undergoing otoplasty by the present technique from January 2006 to December 2016 as performed by the senior author at a tertiary academic referral center...
November 22, 2017: JAMA Facial Plastic Surgery
Liyun Tu, Antonio R Porras, Scott Ensel, Deki Tsering, Beatriz Paniagua, Andinet Enquobahrie, Albert Oh, Robert Keating, Gary F Rogers, Marius George Linguraru
3D photography offers non-invasive, radiation-free, and anesthetic-free evaluation of craniofacial morphology. However, intracranial volume (ICV) quantification is not possible with current non-invasive imaging systems in order to evaluate brain development in children with cranial pathology. The aim of this study is to develop an automated, radiation-free framework to estimate ICV. Pairs of computed tomography (CT) images and 3D photographs were aligned using registration. We used the real ICV calculated from the CTs and the head volumes from their corresponding 3D photographs to create a regression model...
2017: Comput Assist Robot Endosc Clin Image Based Proced (2017)
Aneesa Vanker, Whitney Barnett, Lesley Workman, Polite M Nduru, Peter D Sly, Robert P Gie, Heather J Zar
Background: Indoor air pollution (IAP) and environmental tobacco smoke (ETS) are associated with lower respiratory tract illness (LRTI) or wheezing in children. However, the effect of the timing of these exposures, specifically antenatal versus postnatal, and of alternate fuel sources such as the increasingly used volatile organic compounds have not been well studied. We longitudinally investigated the effect of antenatal or postnatal IAP and ETS on LRTI or wheezing prevalence and severity in African infants...
November 2017: The Lancet. Planetary health
Li-Li Liu, Shao-Gang Zhu, Xiao-Yong Jiang, Jun Ren, Yong Lin, Ning-Ning Zhang, Man-Li Tong, Hui-Lin Zhang, Wei-Hong Zheng, Hua-Jun Fu, Hai-Juan Luo, Li-Rong Lin, Jiang-Hua Yan, Tian-Ci Yang
Recent studies have shown that several long noncoding RNAs (lncRNAs) are involved in regulating the immune response to cope with pathogenic invasion. To date, the roles of lncRNAs in the CD4+ T cell response to Treponema pallidum (T. pallidum) infection in neurosyphilis patients remain unknown. The mRNA and lncRNA expression profiles of CD4+ T cells that were isolated from neurosyphilis patients and healthy controls were analyzed by microarray. A total of 2258 lncRNAs and 1728 mRNAs were identified as over-expressed or under-expressed, respectively (fold change > 1...
2017: Frontiers in Cellular and Infection Microbiology
Laura M Boykin, Anders Savill, Paul De Barro
Members of the whitefly Bemisia tabaci species complex cause millions of dollars of damage globally and are considered one of the world's most invasive species. They are capable of causing extensive damage to major vegetable, grain legume and fiber crops. All member of the species complex are morphologically identical therefore, data from the partial mitochondrial cytochrome oxidase subunit I (mtCOI) gene sequence has been used to identify the various species. The current reference dataset that is widely used is found on the CSIRO data portal...
2017: F1000Research
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