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Shalender Bhasin, Juan P Brito, Glenn R Cunningham, Frances J Hayes, Howard N Hodis, Alvin M Matsumoto, Peter J Snyder, Ronald S Swerdloff, Frederick C Wu, Maria A Yialamas
Objective: To update the "Testosterone Therapy in Men With Androgen Deficiency Syndromes" guideline published in 2010. Participants: The participants include an Endocrine Society-appointed task force of 10 medical content experts and a clinical practice guideline methodologist. Evidence: This evidence-based guideline was developed using the Grading of Recommendations, Assessment, Development, and Evaluation approach to describe the strength of recommendations and the quality of evidence...
March 17, 2018: Journal of Clinical Endocrinology and Metabolism
Kathryn Z Guyton, Ivan Rusyn, Weihsueh A Chiu, Denis E Corpet, Martin van den Berg, Matthew K Ross, David C Christiani, Frederick A Beland, Martyn T Smith
Smith et al. (Env. Health Perspect. 124: 713, 2016) identified 10 key characteristics (KCs), one or more of which are commonly exhibited by established human carcinogens. The KCs reflect the properties of a cancer-causing agent, such as 'is genotoxic,' 'is immunosuppressive' or 'modulates receptor-mediated effects,' and are distinct from the hallmarks of cancer, which are the properties of tumors. To assess feasibility and limitations of applying the KCs to diverse agents, methods and results of mechanistic data evaluations were compiled from eight recent IARC Monograph meetings...
February 21, 2018: Carcinogenesis
M Clare Butler Ellis, Marc C Kennedy, Christian J Kuster, Rafael Alanis, Clive R Tuck
The BREAM (Bystander and Resident Exposure Assessment Model) (Kennedy et al. in BREAM: A probabilistic bystander and resident exposure assessment model of spray drift from an agricultural boom sprayer. Comput Electron Agric 2012;88:63-71) for bystander and resident exposure to spray drift from boom sprayers has recently been incorporated into the European Food Safety Authority (EFSA) guidance for determining non-dietary exposures of humans to plant protection products. The component of BREAM, which relates airborne spray concentrations to bystander and resident dermal exposure, has been reviewed to identify whether it is possible to improve this and its description of variability captured in the model...
March 17, 2018: Annals of Work Exposures and Health
Xiaolei Zhang, Michelle B Trevino, Miao Wang, Stephen J Gardell, Julio E Ayala, Xianlin Han, Daniel P Kelly, Bret H Goodpaster, Rick B Vega, Paul M Coen
The progression of age-related sarcopenia can be accelerated by impaired recovery of muscle mass following periods of disuse due to illness or immobilization. However, the mechanisms underlying poor recovery of aged muscle following disuse remain to be delineated. Recent evidence suggests that mitochondrial energetics play an important role in regulation of muscle mass. Here, we report that 22-24 month old mice with low muscle mass and low glucose clearance rate also display poor early recovery of muscle mass following 10 days of hind limb unloading...
March 19, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Jade-Emmanuelle Deshaies, Lulzim Shkreta, Alexander J Moszczynski, Hadjara Sidibé, Sabrina Semmler, Aurélien Fouillen, Estelle R Bennett, Uriya Bekenstein, Laurie Destroismaisons, Johanne Toutant, Quentin Delmotte, Kathryn Volkening, Stéphanie Stabile, Anaïs Aulas, Yousra Khalfallah, Hermona Soreq, Antonio Nanci, Michael J Strong, Benoit Chabot, Christine Vande Velde
The RNA binding proteins TDP-43 (encoded by TARDBP) and hnRNP A1 (HNRNPA1) are each mutated in certain amyotrophic lateral sclerosis cases and are often mislocalized in cytoplasmic aggregates within motor neurons of affected patients. Cytoplasmic inclusions of TDP-43, which are accompanied by a depletion of nuclear TDP-43, are observed in most amyotrophic lateral sclerosis cases and nearly half of frontotemporal dementia cases. Here, we report that TDP-43 binds HNRNPA1 pre-mRNA and modulates its splicing, and that depletion of nuclear TDP-43 results in increased inclusion of a cassette exon in the HNRNPA1 transcript, and consequently elevated protein levels of an isoform containing an elongated prion-like domain, referred to as hnRNP A1B...
March 19, 2018: Brain: a Journal of Neurology
Jesse D Berman, Thomas M Peters, Kirsten A Koehler
Objectives: To design a method that uses preliminary hazard mapping data to optimize the number and location of sensors within a network for a long-term assessment of occupational concentrations, while preserving temporal variability, accuracy, and precision of predicted hazards. Methods: Particle number concentrations (PNCs) and respirable mass concentrations (RMCs) were measured with direct-reading instruments in a large heavy-vehicle manufacturing facility at 80-82 locations during 7 mapping events, stratified by day and season...
March 17, 2018: Annals of Work Exposures and Health
Jamie McCann, Tae-Soo Jang, Jiri Macas, Gerald M Schneeweiss, Nicholas J Matzke, Petr Novák, Tod F Stuessy, José L Villaseñor, Hanna Weiss-Schneeweiss
Allopolyploidy has played an important role in the evolution of the flowering plants. Genome mergers are often accompanied by significant and rapid alterations of genome size and structure via chromosomal rearrangements and altered dynamics of tandem and dispersed repetitive DNA families. Recent developments in sequencing technologies and bioinformatic methods allow for a comprehensive investigation of the repetitive component of plant genomes. Interpretation of evolutionary dynamics following allopolyploidization requires both the knowledge of parentage and the age of origin of an allopolyploid...
March 19, 2018: Systematic Biology
Heitor S P de Souza, Claudio Fiocchi
Despite unquestionable progress in the management of inflammatory bowel disease (IBD) and the much improved clinical results achievable today in Crohn's disease (CD) and ulcerative colitis (UC) patients, the overall therapeutic outcome remains far from optimal. The main reason of this partial success is that all current medications only block individual components of a highly complex disease process that results from the integration of multiple and incompletely identified pathogenic components. Thus, if further progress is to be achieved in IBD therapeutics and we want to move from the current success rate to nearly 100%, bold new ideas must be entertained and new approaches put into practice...
March 19, 2018: Inflammatory Bowel Diseases
Sherry Masoud, Stephen P McAdoo, Rachna Bedi, Thomas D Cairns, Liz Lightstone
Objective: B cell depletion, most commonly with rituximab, is an evolving therapeutic approach in SLE. Infusion reactions after rituximab are common, and may prevent re-treatment in patients who previously demonstrated beneficial response. We have used ofatumumab, a fully humanized anti-CD20 mAb, as an alternative B cell-depleting agent in patients with SLE who are rituximab-intolerant due to severe infusion reactions. Methods: A single-centre retrospective case series of 16 patients were treated with ofatumumab for SLE between 2012 and 2015...
March 19, 2018: Rheumatology
Lukas Tomas, Andreas Edsfeldt, Inês G Mollet, Ljubica Perisic Matic, Cornelia Prehn, Jerzy Adamski, Gabrielle Paulsson-Berne, Ulf Hedin, Jan Nilsson, Eva Bengtsson, Isabel Gonçalves, Harry Björkbacka
Aims: Identification and treatment of the rupture prone atherosclerotic plaque remains a challenge for reducing the burden of cardiovascular disease. The interconnection of metabolic and inflammatory processes in rupture prone plaques is poorly understood. Herein, we investigate associations between metabolite profiles, inflammatory mediators and vulnerability in carotid atherosclerotic plaques. Methods and results: We collected 159 carotid plaques from patients undergoing endarterectomy and measured 165 different metabolites in a targeted metabolomics approach...
March 19, 2018: European Heart Journal
Riza Eka Saputra, Yayuk Astuti, Adi Darmawan
This work investigated the synthesis of dimethoxydimethylsilane:tetraethoxysilane (DMDMS:TEOS) silica thin films as well as the effect of DMDMS:TEOS molar ratios and calcination temperature on hydrophobic properties of silica thin films and its correlation with the FTIR spectra behaviour. The silica thin films were synthesized by sol-gel method using combination of DMDMS and TEOS as silica precursors, ethanol as solvent and ammonia as catalyst, with DMDMS and TEOS molar ratio of 10:90, 25:75, 50:50, 75:25 and 90:10...
March 14, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Ali A Asadi-Pooya, Kousuke Kanemoto, Oh-Young Kwon, Go Taniguchi, Zhou Dong, Yotin Chinvarun, Hsiang-Yu Yu, Aileen McGonigal, Andres Miguel Kanner, Sung-Pa Park
PURPOSE: The purpose of this review was to investigate the prevalence of depression in people with epilepsy (PWE) in different countries in Asia. METHODS: We searched the electronic database PubMed on June 13, 2017 for articles in English that included the following search terms: "epilepsy" AND "depression" AND "country name" for all Asian countries since 1947. Relevant original studies from Asia were included if they reported the prevalence of depression in PWE...
March 12, 2018: Seizure: the Journal of the British Epilepsy Association
Dacheng Ma, Shuguang Peng, Weiren Huang, Zhiming Cai, Zhen Xie
Nuclease dead Cas9 (dCas9) has been widely used for modulating gene expression by fusing with different activation or repression domains. However, delivery of the CRISPR/Cas system fused with variant effector domains in a single adeno-associated virus (AAV) remains challenging due to the payload limit. Here, we engineered a set of downsized variants of Cas9 including Staphylococcus aureus Cas9 (SaCas9) that retained DNA binding activity by deleting conserved functional domains. We demonstrated that fusing FokI nuclease domain to the N-terminal of the minimal SaCas9 (mini-SaCas9) or to the middle of the split mini-SaCas9 can trigger efficient DNA cleavage...
March 21, 2018: ACS Synthetic Biology
Martin Köhler, Christoph Neff, Camilo Perez, Cyrill Brunner, Els Pardon, Jan Steyaert, Gisbert Schneider, Kaspar P Locher, Renato Zenobi
The application of nanobodies as binding partners for structure stabilization in protein x-ray crystallography is taking an increasingly important role in structural biology. However, the addition of nanobodies to the crystallization matrices might complicate the optimization of the crystallization process, which is why analytical techniques to screen and characterize suitable nanobodies are useful. Here, we show how chemical cross-linking combined with high-mass matrix-assisted laser/desorption ionization mass spectrometry can be employed as a fast screening technique to determine binding specificities of intact nanobody•membrane protein complexes...
March 21, 2018: Analytical Chemistry
Jesús Mosquera Mosquera, Malou Henriksen-Lacey, Isabel García, Miguel Martínez-Calvo, Jessica Rodriguez Villar, José L Mascareñas, Luis M Liz-Marzán
We describe an approach to regulate the cellular uptake of small gold nanoparticles using supramolecular chemistry. The strategy relies on the functionalization of AuNPs with negatively charged pyranines, which largely hamper their penetration in cells. Cellular uptake can be activated in situ through the addition of cationic covalent cages that specifically recognize the fluorescent pyranine dyes and counterbalance the negative charges. The high selectivity and reversibility of the host-guest recognition activates cellular uptake, even in protein-rich biological media, as well as its regulation by rational addition of either cage or pyranine...
March 21, 2018: Journal of the American Chemical Society
Seyed Mostafa Hasan Nasrollahi, Mohammad Ali Ghasemzadeh, Mohammad Reza Zolfaghari
The synthesis of heterocyclic compounds has been a topic of significant interest because of their broad applications. In this research an effective and eco-friendly approach for the synthesis 1,4-dihydropyridines has been developed via the four-component reactions of arylamines, acetylenedicarboxylates, aromatic aldehydes and ethyl acetoacetate in the presence of Fe3O4@SiO2@OSO3H nanocomposite under solvent-free conditions. The advantages of this method involve the green reaction conditions, simple workup, broad substrates, excellent yields and the reuse of the nanocatalyst...
March 2018: Acta Chimica Slovenica
Dattatray G Deshmukh, Mukund N Bangal, Mukunda R Patekar, Vijay J Medhane, Vijayavitthal Thippannachar Mathad
The present work describes investigation of mechanistic pathway for trimethyl borate mediated amidation of (R)-mandelic acid (3) with 4-nitophenylethylamine (2) to provide (R)-2-hydroxy-N-[2-(4-nitrophenyl)ethyl]-2-phenylacetamide (4) during mirabegron synthesis. Plausible reaction mechanism is proposed by isolating and elucidating the active α-hydroxy ester intermediate 16 from the reaction mass. Trimethyl borate mediated approach proved to be selective in providing 4 without disturbing α-hydroxyl group and stereochemistry of the chiral center, and is also a greener, more economic and production friendly over the reported methods...
March 2018: Acta Chimica Slovenica
Cibele Monteiro Macedo, Paula Orchiucci Miura, Dora Mariela Salcedo Barrientos, Gisele Almeida Lopes, Emiko Yoshikawa Egry
OBJECTIVE: To investigate and analyze in the scientific literature coping strategies for domestic violence against pregnant female adolescents. METHOD: This is an integrative literature review, conducted from July to August 2017 on LILACS, SciELO and PubMed, using the descriptors and the MeSH terms: confrontation, violence, adolescent, pregnant women, prenatal care. RESULT: The sample comprised 9 articles that were organized and characterized according to year, country of study and coping strategy used...
2018: Revista Brasileira de Enfermagem
Brener Santos Silva, Hiago Victor Coelho, Ricardo Bezerra Cavalcante, Valéria Conceição de Oliveira, Eliete Albano de Azevedo Guimarães
OBJECTIVE: To carry out the National Immunization Program Information System (SIPNI) accessability assessment (EA), considering the description of the intervention, the elaboration of the theoretical-logical model and the identification of the evaluative questions. METHOD: A single case study with a qualitative approach, based on the system of seven elements proposed by Thurston and Ramaliu (2005). The SIPNI and the context of analysis, the vaccination rooms, were defined as the case...
2018: Revista Brasileira de Enfermagem
Daniel Ianni Filho, Ilka de Fatima Santana Ferreira Boin, Ademar Yamanaka
BACKGROUND: Fibrosis are common structural hepatic change in patients with chronic hepatitis. Liver biopsy is the gold standard for determining the extent of liver fibrosis. Considering the technical difficulties and cost, improvements in non-invasive screening tools are greatly needed. Bioimpedance have been shown to be safe to evaluate tissue fibrosis. OBJECTIVE: To assess the utility of using monofrequential bipolar bioimpedance for the detection of severity of liver fibrosis consistent with chronic viral hepatitis C infections...
January 2018: Arquivos de Gastroenterologia
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