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Inara Mariela da Silva Cavalcante, Glauteice Freitas Guedes, Vilanice Alves de Araújo Püschel
OBJECTIVE: To characterize the experiences of undergraduate students of the School of Nursing of the University of São Paulo (EEUSP) who participated in international mobility programs between January 2011 and July 2017. METHOD: Exploratory, descriptive study with quantitative approach. Of 68 reports, only 38 (56%) were considered valid and were submitted to descriptive statistical analysis. Data were categorized in general, institutional, academic and cultural aspects and cost of living...
2018: Revista Brasileira de Enfermagem
Paloma Triana Junco, Esther María Cano, Mariela Dore, Javier Jimenez Gomez, Alba Sánchez Galán, Alejandra Vilanova-Sánchez, Ane Andres, Jose Luis Encinas, Leopoldo Martinez, Francisco Hernandez, Manuel Lopez Santamaria
AIM:  Hepatoblastoma is the most frequent hepatic tumor in children, and its initial presentation will affect treatment and prognosis. The aim of this study is to evaluate long-term results of liver transplantation in children with unresectable hepatoblastoma. PATIENTS AND METHODS:  This is a retrospective review of patients with hepatoblastoma who underwent liver transplantation, analyzing risk factors, tumor presentation, treatment, and long-term survival to identify prognostic factors...
August 7, 2018: European Journal of Pediatric Surgery
Paloma Triana Junco, Ana Alvarez, Mariela Dore, Javier Jimenez Gomez, Alba Sánchez Galán, Alejandra Vilanova-Sánchez, Ane Andres, Jose Luis Encinas, Leopoldo Martinez, Francisco Hernandez, Manuel Lopez Santamaria
AIM:  Extrahepatic portal vein obstruction (EHPVO) is a frequent cause of noncirrhotic portal hypertension in children. The aim of this study is to analyze long-term results after diversion surgery. PATIENTS AND METHODS:  Retrospective review of EHPVO patients who underwent diversion surgery analyzing number of platelets, leukocytes, prothrombin activity, splenomegaly, and gastrointestinal bleeding 10 years after surgery. RESULTS:  Thirty-three patients were evaluated, mostly males (64%) and presenting with gastrointestinal bleeding (46%)...
August 7, 2018: European Journal of Pediatric Surgery
Raissa Borges Curtarelli, Jussara Maria Gonçalves, Luciane Geanini Pena Dos Santos, Maria Gorete Savi, Jacques Eduardo Nör, Luis André Mendonça Mezzomo, Mabel Mariela Rodríguez Cordeiro
Malignant neoplasms may be composed of several cell groups, including cancer stem cells (CSC). These cells have been related with the capacity of metastasis, relapse and resistance to multiple drugs during chemotherapy. This study aims to identify CSC biomarkers and their expression pattern in human head and neck carcinomas. This study was conducted following the PRISMA checklist. The search for articles was carried out in five databases (PubMed, Scopus, Web of Science, Lilacs and Scielo). The articles found were selected in two phases: 1) reading the titles and / or abstract and 2) reading the full text...
August 3, 2018: Stem Cell Reviews
Alejandra Bárcena, Mariela Bruno, Ana Gennaro, Maria Fernanda Rozas, María V Mirífico, Pedro A Balatti, Mario C N Saparrat
Pseudocercospora griseola is the causal agent of Angular Leaf Spot (ALS), a disease of common bean. Due to its coevolution with beans, two major groups have been defined, "Andean" (P. griseola f. griseola) and "Mesoamerican" (P. griseola f. mesoamericana). The aim of this study was to characterize the dark pigment, melanin, synthetized by a selected isolate of each genic group of P. griseola when grown on Potato-dextrose broth. P. griseola f. griseola isolate S3b and P. griseola f. mesoamericana isolate T4 produced 1...
July 27, 2018: Journal of Photochemistry and Photobiology. B, Biology
Luis David Sánchez, Irene Olivares, Jorge Parra, Mariela Menghini, Pía Homm, Jean-Pierre Locquet, Pablo Sanchis
A tunable transverse electric (TE) pass polarizer is demonstrated based on hybrid vanadium dioxide/silicon (VO2 /Si) technology. The 20-μm-long TE pass polarizer exploits the phase transition of the active VO2 material to control the rejection of the unwanted transverse magnetic (TM) polarization. The device features insertion losses below 1 dB at static conditions and insertion losses of 5.5 dB and an attenuation of TM polarization of 19 dB in the active state for a wavelength range between 1540 nm and 1570 nm...
August 1, 2018: Optics Letters
Fernando Rodriguez, Mariela J Rivas, Lani H Matsumura, Mark Warschauer, Brian K Sato
With the nationwide emphasis on improving outcomes for STEM undergraduates, it is important that we not only focus on modifying classroom instruction, but also provide students with the tools to maximize their independent learning time. There has been considerable work in laboratory settings examining two beneficial practices for enhancing learning: spacing and self-testing. In the current study, we examine biology students' study practices, particularly in the context of these two behaviors. We specifically investigate whether a light-touch study skills intervention focused on encouraging spacing and self-testing practices impacted their utilization...
2018: PloS One
Mariela García-Ramos, Javier de la Mora, Teresa Ballado, Laura Camarena, Georges Dreyfus
In this work we have characterized the soluble lytic transglycosylase (SltF) from Rhodobacter sphaeroides that interacts with the scaffolding protein FlgJ in the periplasm to open space at the cell wall peptidoglycan heteropolymer for the emerging rod. The characterization of the genetic context of flgJ and s ltF in α-proteobacteria shows that these two separate genes coexist frequently in a flagellar gene cluster. Two domains of unknown function in SltF were studied and results show that deletion of a 17 amino acid segment near the N-terminus does not show a recognizable phenotype whereas the deletion of 47 and 95 amino acid of the C-terminus of SltF disrupts the interaction with FlgJ without affecting the transglycosylase catalytic activity of SltF...
July 30, 2018: Journal of Bacteriology
Richard Ahn, Di Yan, Hsin-Wen Chang, Kristina Lee, Shrishti Bhattarai, Zhi-Ming Huang, Mio Nakamura, Rasnik Singh, Ladan Afifi, Keyon Taravati, Priscila Munoz-Sandoval, Mariela Pauli, Michael D Rosenblum, Wilson Liao
It has long been recognized that anatomic location is an important feature for defining distinct subtypes of plaque psoriasis. However, little is known about the molecular differences between scalp, palmoplantar, and conventional plaque psoriasis. To investigate the molecular heterogeneity of these psoriasis subtypes, we performed RNA-seq and flow cytometry on skin samples from individuals with scalp, palmoplantar, and conventional plaque psoriasis, along with samples from healthy control patients. We performed differential expression analysis and network analysis using weighted gene coexpression network analysis (WGCNA)...
July 27, 2018: Scientific Reports
Mariela Machado, Christine Wallace, Bruce Austin, Suhas Deshpande, Agnes Lai, Terry Whittle, Iven Klineberg
PURPOSE: This study has evaluated the pre and post perceptions of patients with ectodermal dysplasia (ED) who have been referred to Westmead Centre for Oral Health for treatment with dental implants. METHODS: Six patients with ED and hypodontia were treated with new maxillary complete dental prostheses or fixed implant prostheses, and a mandibular fixed dental prosthesis with implants. Patient perceptions were recorded with a 10cm visual analogue scale (VAS). All patients were asked to draw a line on the VAS which best described their feelings regarding aesthetics, chewing, diet and speech...
July 24, 2018: Journal of Prosthodontic Research
Mariela Beatriz Reyes-Sosa, Javier Eduardo Apodaca-Hernández, María Leticia Arena-Ortiz
Coastal environments harbor diverse microbial communities, which can contain genera with potential bioremediation activity. Next-generation DNA sequencing was used to identify bacteria to the genus level in water and sediment samples collected from the open ocean, shoreline, wetlands and freshwater upwellings on the northwest coast of the Yucatan Peninsula. Supported by an extensive literature review, a phylogenetic investigation of the communities was done using reconstruction of unobserved states software (PICRUSt) to predict metagenome functional content from the sequenced 16S gene in all the samples...
November 15, 2018: Science of the Total Environment
Mariela J Simão, Thiago J S Barboza, Marcela G Vianna, Renata Garcia, Elisabeth Mansur, Ana Claudia P R Ignacio, Georgia Pacheco
Passiflora species are well known for their common use in popular medicine for the treatment of several diseases, such as insomnia, anxiety, and hysteria, in addition to their anti-inflammatory, antioxidant, analgesic and antibacterial potential. However, few data about the chemical composition and the medicinal potential of in vitro derived materials are available. Therefore, the goal of this work was to compare, for the first time, the phytoconstituents of in vitro derived materials of four Passiflora species, and evaluate the antibacterial potential of their extracts against 20 Gram-positive and negative strains...
July 19, 2018: Anais da Academia Brasileira de Ciências
Diego E Egoburo, Rocío Diaz Peña, Daniela S Alvarez, Manuel S Godoy, Mariela P Mezzina, M Julia Pettinari
Manipulation of global regulators is one of the strategies used for the construction of bacterial strains suitable for the synthesis of bioproducts. However, the pleiotropic effects of these regulators can vary in different conditions and are often strain dependent. This study analyzed the effects of ArcA, CreC, Cra and Rob using single deletion mutants of the well characterized and completely sequenced Escherichia coli strain BW25113. Comparison of the effects of each regulator on the synthesis of major extracellular metabolites, tolerance to several compounds and synthesis of native and non-native bioproducts in different growth conditions allowed the discrimination of the particular phenotypes that can be attributed to the individual mutants, and singled out Cra and ArcA as the regulators with the most important effects on bacterial metabolism...
July 20, 2018: Applied and Environmental Microbiology
Mariela Acuña Mora, Koen Luyckx, Carina Sparud-Lundin, Mariëlle Peeters, AnneLoes van Staa, Jane Sattoe, Ewa-Lena Bratt, Philip Moons
PURPOSE: Empowerment in patients can lead to a higher participation in care and self-management skills. However, there are a limited number of high-quality instruments to assess empowerment and its various dimensions in young persons. The aim was to develop and assess the psychometric properties of the Gothenburg Young Persons Empowerment Scale (GYPES). METHODS: The GYPES is a 15-item questionnaire designed to measure patient empowerment in young persons with chronic conditions...
2018: PloS One
Jaime D Martinez, Andrea Naranjo, Guillermo Amescua, Sander R Dubovy, Alejandro Arboleda, Heather Durkee, Mariela C Aguilar, Harry W Flynn, Darlene Miller, Jean-Marie Parel
No abstract text is available yet for this article.
July 19, 2018: Cornea
Andrés E Brunetti, Mariela M Marani, Rafael A Soldi, Jacqueline Nakau Mendonça, Julián Faivovich, Gabriela M Cabrera, Norberto P Lopes
Peptides from skin secretions of amphibians are considered important components of their immune system and also play a relevant role in their defense mechanism against predators. Herein, by using mass spectrometry (MS), we characterize the sequence of 13 peptides from the gland secretion of the hylid tree frog, Boana punctata . Using in situ matrix-assisted laser desorption ionization imaging MS of a transverse section of the skin tissue, we show that some peptides are stored as longer molecules that are cleaved after being secreted, whereas others do not undergo any modification...
May 31, 2018: ACS Omega
M Jazmín Silvero C, Diamela M Rocca, Emilce Artur de la Villarmois, Kelsey Fournier, Anabel E Lanterna, Mariela F Pérez, M Cecilia Becerra, Juan C Scaiano
Photoinduced antibacterial gold nanoparticles were developed as an alternative for the treatment of antibiotic-resistant bacteria. Thanks to the amoxicillin coating, they possess high in vivo stability, selectivity for the bacteria wall, a good renal clearance, and are completely nontoxic for eukaryotic cells at the bactericidal concentrations. A simple one-step synthesis of amoxi@AuNP is described at mild temperatures using the antibiotic as both reducing and stabilizing agent. Time-resolved fluorescence microscopy proved these novel nano-photosensitizers, with improved selectivity, are bactericidal but showing excellent biocompatibility toward eukaryotic cells at the same dose (1...
January 31, 2018: ACS Omega
Guillaume Goyette-Desjardins, Evgeny Vinogradov, Masatoshi Okura, Daisuke Takamatsu, Marcelo Gottschalk, Mariela Segura
Streptococcus suis serotype 3 is counted among the S. suis serotypes causing clinical disease in pigs. Yet, limited information is available on this serotype. Here we determined for the first time the chemical composition and structure of serotype 3 capsular polysaccharide (CPS), a major bacterial virulence factor and the antigen at the origin of S. suis classification into serotypes. Chemical and spectroscopic data gave the repeating unit sequence for serotype 3: [4)D-GlcA (β1-3)d-QuiNAc4NAc(β1-]n . To the best of our knowledge, this is the first report of di-N-acetyl-d-bacillosamine (QuiNAc4NAc) containing polysaccharides in Streptococci and the second time this rare diamino sugar has been observed in a Gram-positive bacterial species since its initial report...
August 2018: Carbohydrate Research
Flavio Requejo, Florencia Romina Strawich, Diana Mariela Mouratian, Timo Krings
We report a case of a 2-year-old girl with 22q11 deletion syndrome who underwent studies for cardiac murmur. Ultrasound, computed tomography angiography and digital subtraction angiography revealed an aberrant right subclavian artery and an isolated right internal carotid artery (ICA) originating from the right pulmonary artery. A right carotid rete mirabile (CRM) and a proatlantal (Pa) type 1 artery were also found. We hypothesize that Pa type 1 persistence and CRM development are secondary to the reversal of flow of the isolated ICA...
July 16, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Andrea Sala, Mariela Caputo, Santiago Ginart, Graciela Theiler, María Laura Parolin, Raúl Francisco Carnese, Leonardo Fainboim, Daniel Corach
Historical records suggest that Chiriguano tribe is the result of a genetic admixture event. The process involved the arrival of Guaraní tribesmen descending from Amazonian region of Brazil along with groups of Arawak origin that inhabited the foothill plains of Bolivia. Later they arrived in Argentina at the beginning of the twentieth century. Aiming to test the historical records, we analysed a set of 46 samples collected at San Ramon de la Nueva Orán, Province of Salta, Argentina. A wide set of uni- and biparentally transmitted genetic markers were analysed, including 23 autosomal STRs; 46 AIM-DIPs and 24 AIM-SNPs all located at diverse autosomal chromosome locations; 23 Y-STRs and the entire mtDNA D-Loop sequence...
July 12, 2018: Molecular Biology Reports
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