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Katarzyna Modzelewska, Elena F Boer, Timothy L Mosbruger, Daniel Picard, Daniela Anderson, Rodney R Miles, Mitchell Kroll, William Oslund, Theodore J Pysher, Joshua D Schiffman, Randy Jensen, Cicely A Jette, Annie Huang, Rodney A Stewart
Malignant brain tumors are the leading cause of cancer-related deaths in children. Primitive neuroectodermal tumors of the CNS (CNS-PNETs) are particularly aggressive embryonal tumors of unknown cellular origin. Recent genomic studies have classified CNS-PNETs into molecularly distinct subgroups that promise to improve diagnosis and treatment; however, the lack of cell- or animal-based models for these subgroups prevents testing of rationally designed therapies. Here, we show that a subset of CNS-PNETs co-express oligoneural precursor cell (OPC) markers OLIG2 and SOX10 with coincident activation of the RAS/MAPK (mitogen-activated protein kinase) pathway...
October 25, 2016: Cell Reports
Laura Denise Mendes da Silva, Mariana Gatto, Mariana Miziara de Abreu Teodoro, Marjorie de Assis Golim, Érika Alessandra Pelisson Nunes da Costa, Francilene Capel Tavares Carvalho, Daniela Ramos Rodrigues, Paulo Câmara Marques Pereira, Ângela Maria Victoriano de Campos Soares, Sueli Aparecida Calvi
Chagas disease (CD), caused by the protozoan Trypanosoma cruzi is a serious public health issue. Its evolution involves an acute stage, characterized by no specific symptoms, and the chronic stage during most individuals are asymptomatic, but about 30 to 40% of them become symptomatic presenting the cardiac or digestive disease. Host immune response mechanisms involved in symptomatic or asymptomatic chronic disease are not fully understood. The pro-inflammatory cytokines are crucial in host resistance. However, a fine control of this inflammatory process, by action of anti-inflammatory cytokines, is necessary to avoid tissue injury...
October 26, 2016: Scandinavian Journal of Immunology
Fátima Gonçalves Cavalcante, Luciana Ferreira Lau, Gabriella Ferrarese Barbosa, Daniela Lima Gomes Berlim, Natasha Coelho Menezes, Daniela de Carvalho Braga, Annibal Coelho de Amorim, Yuri Cavalcante Amorim
The article analyzes the impact of a documentary on the daily lives of mothers and children with disabilities, exhibited at conferences, festivals, universities and schools in Brazil, Colombia and Japan. Produced by film and health professionals, social scientists and a women's network, the feature film "A special day" was awarded at Assim Vivemos VI International Disability Film Festival (2013-2014). The objective is to analyze the impact of the film and its diffusion among professionals and students from health and education areas...
October 2016: Ciência & Saúde Coletiva
Sheila Mara Pedrosa, Mary Lopes Reis, Daniela Tavares Gontijo, Sheila Araújo Teles, Marcelo Medeiros
Objective: the objective of this study was to understand the meaning of the harmful use of crack by people undergoing addiction treatment. Method: qualitative approach of social research on strategic modality was used. Field observation, preparation of field diary and focus groups, and data analysis through the method of interpreting meaning were carried out. Results: the results contributed to the construction of three thematic categories: "The discovery of crack and other drugs" that describes the experimentation with crack and other drugs; "The pain of the pleasure", key category that describes the moments after crack experimentation and that, many times, turns into addiction, which leads the person into a cycle of short periods of attempts at abstinence, relapse, and relentless consumption; and "Return to normal life"...
September 2016: Revista Brasileira de Enfermagem
Daniela Inês Thier Roloff, Marta Regina Cezar-Vaz, Clarice Alves Bonow, Liana Lautert, Cynthia Fontella Sant'Anna, Andréia Martins do Couto
Objective: to analyze the relationship of occupational health nurses with the other members of the Specialized Service in Safety Engineering and Occupational Medicine (SESMT) and characterize joint actions of these professionals in occupational health. Method: qualitative, exploratory, and descriptive study with 34 professionals of seven companies from the South Macroregion of the state of Rio Grande do Sul. Interviews and observations were conducted for content analysis of Bardin...
September 2016: Revista Brasileira de Enfermagem
Caterina Pauletti, Daniela Mannarelli, Nicoletta Locuratolo, Luca Pollini, Antonio Currà, Lucio Marinelli, Steno Rinalduzzi, Francesco Fattapposta
Fatigue is a non-specific symptom that is common in chronic diseases and represents one of the most disabling symptoms in Parkinson's disease. PD patients often experience cognitive deficits related above all to executive functions. The relationship between cognitive changes and fatigue in PD patients has not been explored in depth. The Attention Network Test (ANT) is a rapid, widely used test to measure the efficiency of three attentional networks, i.e., alerting, orienting, and executive, by evaluating reaction times (RTs) in response to visual stimuli...
October 25, 2016: Journal of Neural Transmission
Hanns Moshammer, Stana Simic, Daniela Haluza
Ultra-Violet (UV) radiation covers the spectrum of wavelengths from 100 to 400 nm. The potency and biological activity for a variety of endpoints differ by wavelength. For monitoring and communication purposes, different UV action spectra have been developed. These spectra use different weighting functions. The action spectrum for erythemal dose is the most widely used one. This erythemal dose per time or dose-rate has been further simplified into a "UV index". Following this example, in our review we use the term "index" or (plural) "indices" in a more general description for all simplified single-value measures for any biologically effective UV dose, e...
October 24, 2016: International Journal of Environmental Research and Public Health
Michela Bulfoni, Matteo Turetta, Fabio Del Ben, Carla Di Loreto, Antonio Paolo Beltrami, Daniela Cesselli
Although the enumeration of circulating tumor cells (CTC) defined as expressing both epithelial cell adhesion molecule and cytokeratins (EpCAM⁺/CK⁺) can predict prognosis and response to therapy in metastatic breast, colon and prostate cancer, its clinical utility (i.e., the ability to improve patient outcome by guiding therapy) has not yet been proven in clinical trials. Therefore, scientists are now focusing on the molecular characterization of CTC as a way to explore its possible use as a "surrogate" of tumor tissues to non-invasively assess the genomic landscape of the cancer and its evolution during treatment...
October 24, 2016: International Journal of Molecular Sciences
Daniela M Santos, Laís V Lage, Eleonora K Jabur, Helena H S Kaziyama, Dan V Iosifescu, Mara Cristina S De Lucia, Renério Fráguas
OBJECTIVES: We developed this study to investigate the association of fibromyalgia with personality traits, controlling for depression and other potential confounders. METHODS: We assessed personality traits with the Cloninger's Temperament and Character Inventory (TCI) in 78 female patients with fibromyalgia and in a control group of 78 subjects without fibromyalgia. The Mini-International Neuropsychiatric Interview was used to assess depression and anxiety diagnoses...
October 20, 2016: Clinical and Experimental Rheumatology
Maurizio Baldassarre, Marco Domenicali, Marina Naldi, Maristella Laggetta, Ferdinando A Giannone, Maurizio Biselli, Daniela Patrono, Carlo Bertucci, Mauro Bernardi, Paolo Caraceni
Decompensated cirrhosis is associated to extensive post-transcriptional changes of human albumin (HA). This study aims to characterize the occurrence of HA homodimerization in a large cohort of patients with decompensated cirrhosis and to evaluate its association with clinical features and prognosis. HA monomeric and dimeric isoforms were identified in peripheral blood by using a HPLC-ESI-MS technique in 123 cirrhotic patients hospitalized for acute decompensation and 50 age- and sex-comparable healthy controls...
October 26, 2016: Scientific Reports
Mircea Dragoman, Lidia Ghimpu, Cosmin Obreja, Adrian Dinescu, Irina Plesco, Daniela Dragoman, Tudor Braniste, Ion Tiginyanu
In this paper, we report on a pressure sensor based on graphene aerogel functionalized with SnO2 or GaN thin films deposited by magnetron sputtering. Decoration by nanocrystalline SnO2 or GaN was found to enhance the piezoresistive response of the bare aerogel. The responsivity and pressure sensing range (from 1-5 atm) of the sensor are shown to be higher than those inherent in pressure sensors based on graphene membranes.
November 25, 2016: Nanotechnology
Fabienne Hartmann-Fritsch, Daniela Marino, Ernst Reichmann
BACKGROUND: The treatment of severe full-thickness skin defects represents a significant and common clinical problem worldwide. A bio-engineered autologous skin substitute would significantly reduce the problems observed with today's gold standard. METHODS: Within 15 years of research, the Tissue Biology Research Unit of the University Children's Hospital Zurich has developed autologous tissue-engineered skin grafts based on collagen type I hydrogels. Those products are considered as advanced therapy medicinal products (ATMPs) and are routinely produced for clinical trials in a clean room facility following the guidelines for good manufacturing practice (GMP)...
September 2016: Transfusion Medicine and Hemotherapy
Michela Novelli, Marta Menegazzi, Pascale Beffy, Svetlana Porozov, Alex Gregorelli, Daniela Giacopelli, Vincenzo De Tata, Pellegrino Masiello
The extract of the herbaceous plant St. John's wort (SJW) and its phloroglucinol component hyperforin (HPF) were previously shown to inhibit cytokine-induced STAT-1 and NF-κB activation and prevent damage in pancreatic β cells. To further clarify the mechanisms underlying their protective effects, we evaluated the phosphorylation state of various factors of cytokine signaling pathways and the expression of target genes involved in β-cell function, inflammatory response and apoptosis induction. In the INS-1E β-cell line, exposed to a cytokine mixture with/without SJW extract (2-5μg/ml) or HPF (1-5μM), protein phosphorylation was assessed by Western blotting and expression of target genes by real-time quantitative PCR...
October 22, 2016: International Journal of Biochemistry & Cell Biology
Rui Santos, Catarina Costa, Dalila Mil-Homens, Daniela Romão, Carla C C R de Carvalho, Pedro Pais, Nuno P Mira, Arsénio M Fialho, Miguel C Teixeira
The mechanisms of persistence and virulence associated to Candida glabrata infections are poorly understood, limiting the ability to fight this fungal pathogen. In this study, the multidrug resistance transporters CgTpo1_1 and CgTpo1_2 are shown to play a role in C. glabrata virulence. The survival of the infection model Galleria mellonella, infected with C. glabrata, was found to increase upon the deletion of either CgTPO1_1 or CgTPO1_2. The underlying mechanisms were further explored. In the case of CgTpo1_1, this phenotype was found to be consistent with the observation that it confers resistance to antimicrobial peptides (AMP), such as the human AMP histatin-5...
October 25, 2016: Cellular Microbiology
Carolina D'Alesio, Simona Punzi, Angelo Cicalese, Lorenzo Fornasari, Laura Furia, Laura Riva, Alessandro Carugo, Giuseppe Curigliano, Carmen Criscitiello, Giancarlo Pruneri, Pier Giuseppe Pelicci, Mario Faretta, Daniela Bossi, Luisa Lanfrancone
Epigenetic regulation plays an essential role in tumor development and epigenetic modifiers are considered optimal potential druggable candidates. In order to identify new breast cancer vulnerabilities and improve therapeutic chances for patients, we performed in vivo and in vitro shRNA screens in a human breast cancer cell model ( cell line) using epigenetic libraries. Among the genes identified in our screening, we deeply investigated the role of Chromodomain Helicase DNA binding Protein 4 (CHD4) in breast cancer tumorigenesis...
October 13, 2016: Oncotarget
Stefania Oliva, Manuela Gambella, Milena Gilestro, Vittorio Emanuele Muccio, Francesca Gay, Daniela Drandi, Simone Ferrero, Roberto Passera, Chiara Pautasso, Annalisa Bernardini, Mariella Genuardi, Francesca Patriarca, Elona Saraci, Maria Teresa Petrucci, Norbert Pescosta, Anna Marina Liberati, Tommaso Caravita, Concetta Conticello, Alberto Rocci, Pellegrino Musto, Mario Boccadoro, Antonio Palumbo, Paola Omedè
We analyzed 50 patients who achieved at least a very good partial response in the RV-MM-EMN-441 study. Patients received consolidation with autologous stem-cell transplantation (ASCT) or cyclophosphamide-lenalidomide-dexamethasone (CRD), followed by Lenalidomide-based maintenance. We assessed minimal residual disease (MRD) by multi-parameter flow cytometry (MFC) and allelic-specific oligonucleotide real-time quantitative polymerase chain reaction (ASO-RQ-PCR) after consolidation, after 3 and 6 courses of maintenance, and thereafter every 6 months until progression...
October 13, 2016: Oncotarget
Graziano Colombo, Marco Clerici, Alessandra Altomare, Francesco Rusconi, Daniela Giustarini, Nicola Portinaro, Maria Lisa Garavaglia, Ranieri Rossi, Isabella Dalle-Donne, Aldo Milzani
: In this study, we assessed the oxidative damage occurring in plasma proteins when human blood was exposed to inflammatory concentrations of hypochlorous acid (HOCl). We used specific thiol labelling and Western blot analyses to determine protein thiol oxidation, as well as analytical gel filtration HPLC coupled to fluorescence detection to explore formation of high molecular weight (HMW) protein aggregates. Thiol-containing proteins oxidized by HOCl were identified by redox proteomics...
October 21, 2016: Journal of Proteomics
Jian Wang, Radovan Krejci, Scott Giangrande, Chongai Kuang, Henrique M J Barbosa, Joel Brito, Samara Carbone, Xuguang Chi, Jennifer Comstock, Florian Ditas, Jost Lavric, Hanna E Manninen, Fan Mei, Daniel Moran-Zuloaga, Christopher Pöhlker, Mira L Pöhlker, Jorge Saturno, Beat Schmid, Rodrigo A F Souza, Stephen R Springston, Jason M Tomlinson, Tami Toto, David Walter, Daniela Wimmer, James N Smith, Markku Kulmala, Luiz A T Machado, Paulo Artaxo, Meinrat O Andreae, Tuukka Petäjä, Scot T Martin
The nucleation of atmospheric vapours is an important source of new aerosol particles that can subsequently grow to form cloud condensation nuclei in the atmosphere. Most field studies of atmospheric aerosols over continents are influenced by atmospheric vapours of anthropogenic origin (for example, ref. 2) and, in consequence, aerosol processes in pristine, terrestrial environments remain poorly understood. The Amazon rainforest is one of the few continental regions where aerosol particles and their precursors can be studied under near-natural conditions, but the origin of small aerosol particles that grow into cloud condensation nuclei in the Amazon boundary layer remains unclear...
October 24, 2016: Nature
Vagner Bezerra Dos Santos, Daniela Daniel, Melina Singh, Claudimir Lucio do Lago
A capillary electrophoresis-tandem mass spectrometry (CE-MS/MS) method for amphetamine (AM), phentermine (PTM), methamphetamine (MAM), methylenedioxyamphetamine (MDA), methylenedioxymethamphetamine (MDMA), and methylenedioxyethylamphetamine (MDEA) in commercial samples of homeopathic and phytotherapic medicines and dietary supplements is presented. The samples were submitted to a modified QuEChERS extraction procedure (at apparent pH 13) followed by electrophoretic separation in 0.1molL(-1) formic acid electrolyte (pH 2...
October 17, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Joelle Leonie Flueck, Fabienne Schaufelberger, Martina Lienert, Daniela Schäfer Olstad, Matthias Wilhelm, Claudio Perret NCT02083328.
2016: PloS One
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