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Agustín Maceda, Marcos Soto-Hernández, Cecilia B Peña-Valdivia, Teresa Terrazas
The aims of this study were to determine the wood chemical composition of 25 species of Cactaceae and to relate the composition to their anatomical diversity. The hypothesis was that wood chemical components differ in relationship to their wood features. The results showed significant differences in wood chemical compounds across species and genera (p < 0.05). Pereskia had the highest percentage of lignin, whereas species of Coryphantha had the lowest; extractive compounds in water were highest for Echinocereus, Mammillaria and Opuntia...
February 14, 2018: Chemistry & Biodiversity
William Cevallos, Pedro Fernández-Soto, Manuel Calvopiña, María Buendía-Sánchez, Julio López-Abán, Belén Vicente, Antonio Muro
Amphimeriasis, a fish-borne zoonotic disease caused by the liver fluke Amphimerus spp., has recently been reported as an emerging disease affecting an indigenous Ameridian group, the Chachi, living in Ecuador. The only method for diagnosing amphimeriasis was the microscopic detection of eggs from the parasite in patients' stool samples with very low sensitivity. Our group developed an ELISA technique for detection of anti-Amphimerus IgG in human sera and a molecular method based on LAMP technology (named LAMPhimerus) for specific and sensitive parasite DNA detection...
2018: PloS One
John Andrew Tyson-Carr, Katerina Kokmotou, Vicente Soto, Stephanie Cook, Nicholas B Fallon, Timo Giesbrecht, Andrej Stancak
The value of environmental cues and internal states is continuously evaluated by the human brain and it is this subjective value that largely guides decision-making. The present study aimed to investigate the initial value attribution process, specifically the spatio-temporal activation patterns associated with values and valuation context using electroencephalographic event-related potentials (ERPs). Participants completed a stimulus rating task in which everyday household items marketed up to a price of £4 were evaluated with respect to their desirability or material properties...
February 14, 2018: Journal of Neurophysiology
Kotaro Ogaki, Yuka A Martens, Michael G Heckman, Shunsuke Koga, Catherine Labbé, Oswaldo Lorenzo-Betancor, Anna I Wernick, Ronald L Walton, Alexandra I Soto, Emily R Vargas, Henrietta M Nielsen, Shinsuke Fujioka, Takahisa Kanekiyo, Ryan J Uitti, Jay A van Gerpen, William P Cheshire, Zbigniew K Wszolek, Phillip A Low, Wolfgang Singer, Dennis W Dickson, Guojun Bu, Owen A Ross
BACKGROUND: Dysregulation of the specialized lipid metabolism involved in myelin synthesis and maintenance by oligodendrocytes has been associated with the unique neuropathology of MSA. We hypothesized that apolipoprotein E, which is associated with neurodegeneration, may also play a role in the pathogenesis of MSA. OBJECTIVE: This study evaluated genetic associations of Apolipoprotein E alleles with risk of MSA and α-synuclein pathology, and also examined whether apolipoprotein E isoforms differentially affect α-synuclein uptake in a oligodendrocyte cell...
February 14, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
Enrique Soto-Perez-de-Celis, Viridana Perez-Montessoro, Patricia Rojo-Castillo, Yanin Chavarri-Guerra
Understanding the preferred sources of health-related information among patients with cancer is essential for designing successful cancer education and prevention strategies. However, little is known about health-related information-seeking practices among patients living in low- and middle-income countries. We studied the preferred sources of health-related information among Mexican patients with cancer and explored which factors influence these choices. The health-related information-seeking practices among patients with cancer treated at a public hospital in Mexico City were evaluated using questions from the Spanish Version of the Health Information National Trends Survey...
February 13, 2018: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
Diego A Díaz-Dinamarca, José I Jerias, Daniel A Soto, Jorge A Soto, Natalia V Díaz, Yessica Y Leyton, Rodrigo A Villegas, Alexis M Kalergis, Abel E Vásquez
Group B Streptococcus (GBS) is the leading cause of neonatal meningitis and a common pathogen in livestock and aquaculture industries around the world. Conjugate polysaccharide and protein-based vaccines are under development. The surface immunogenic protein (SIP) is a conserved protein in all GBS serotypes and has been shown to be a good target for vaccine development. The expression of recombinant proteins in Escherichia coli cells has been shown to be useful in the development of vaccines, and the protein purification is a factor affecting their immunogenicity...
February 13, 2018: Molecular Biotechnology
Marina Muñoz, Dora I Ríos-Chaparro, Giovanny Herrera, Sara C Soto-De Leon, Claudia Birchenall, Darío Pinilla, Juan M Pardo-Oviedo, Diego F Josa, Manuel A Patarroyo, Juan D Ramírez
Clostridium difficile (CD) produces antibiotic associated diarrhea and leads to a broad range of diseases. The source of CD infection (CDI) acquisition and toxigenic profile are factors determining the impact of CD. This study aimed at detecting healthcare facility onset- (HCFO) and community-onset (CO) CDI and describing their toxigenic profiles in Bogotá, Colombia. A total of 217 fecal samples from patients suffering diarrhea were simultaneously submitted to two CDI detection strategies: (i) in vitro culture using selective chromogenic medium (SCM; chromID, bioMérieux), followed verification by colony screening (VCS), and (ii) molecular detection targeting constitutive genes, using two conventional PCR tests (conv...
2018: Frontiers in Microbiology
Yanina Soledad Bogliotti, Jun Wu, Marcela Vilarino, Daiji Okamura, Delia Alba Soto, Cuiqing Zhong, Masahiro Sakurai, Rafael Vilar Sampaio, Keiichiro Suzuki, Juan Carlos Izpisua Belmonte, Pablo Juan Ross
Embryonic stem cells (ESCs) are derived from the inner cell mass of preimplantation blastocysts. From agricultural and biomedical perspectives, the derivation of stable ESCs from domestic ungulates is important for genomic testing and selection, genome engineering, and modeling human diseases. Cattle are one of the most important domestic ungulates that are commonly used for food and bioreactors. To date, however, it remains a challenge to produce stable pluripotent bovine ESC lines. Employing a culture system containing fibroblast growth factor 2 and an inhibitor of the canonical Wnt-signaling pathway, we derived pluripotent bovine ESCs (bESCs) with stable morphology, transcriptome, karyotype, population-doubling time, pluripotency marker gene expression, and epigenetic features...
February 9, 2018: Proceedings of the National Academy of Sciences of the United States of America
José Luis Soto, Ignacio Blanco, Orland Díez, Javier García Planells, Isabel Lorda, Gert Matthijs, Mercedes Robledo, Erika Souche, Conxi Lázaro
Genetic diagnosis of hereditary cancer syndromes offers the opportunity to establish more effective predictive and preventive measures for the patient and their families. The ultimate objective is to decrease cancer morbidity and mortality in high genetic risk families. Next Generation Sequencing (NGS) offers an important improvement in the efficiency of genetic diagnosis, allowing an increase in diagnostic yield with a substantial reduction in response times and economic costs. Consequently, the implementation of this new technology is a great opportunity for improvement in the clinical management of affected families...
February 10, 2018: Medicina Clínica
Carolina Soto Cárdenas, Marina Gerea, Claudia Queimaliños, Sergio Ribeiro Guevara, María C Diéguez
Microbial assemblages are typical of deep ultraoligotrophic Andean Patagonian lakes and comprise picoplankton and protists (phytoflagellates and mixotrophic ciliates), having a central role in the C cycle, primary production and in the incorporation of dissolved inorganic mercury (Hg2+) into lake food webs. In this study we evaluated the mechanisms of Hg2+incorporation in hetero- and autotrophic bacteria, in the autotrophic dinoflagellate (Gymnodinium paradoxum) and in two mixotrophic ciliates (Stentor araucanus and Ophrydium naumanni) dominating the planktonic microbial assemblage...
February 8, 2018: Chemosphere
Erendida Hernández, Virineya Bertin, Jorge Soto, Alan Miralrio, Miguel Castro
The search of catalyst for the reduction of nitrous oxide (N2O) is imperative nowadays, as this molecule is a very dangerous pollutant. We found that the low-symmetry Pt8cluster presents multiple reaction pathways for the N2O rupture, which are regioselective. This result was revealed by means of density functional calculations, within the zero-order-regular approximation, ZORA, explicitly including relativistic effects. It is further proved that Pt8is a competitive nitrous oxide catalyst compared to sub-nanometric rhodium clusters, obtaining similar reaction barriers...
February 13, 2018: Journal of Physical Chemistry. A
Kah Poh Loh, Enrique Soto-Perez-de-Celis, Tina Hsu, Nienke A de Glas, Nicolò Matteo Luca Battisti, Capucine Baldini, Manuel Rodrigues, Stuart M Lichtman, Hans Wildiers
Aging is a heterogeneous process. Most newly diagnosed cancers occur in older adults, and it is important to understand a patient's underlying health status when making treatment decisions. A geriatric assessment provides a detailed evaluation of medical, psychosocial, and functional problems in older patients with cancer. Specifically, it can identify areas of vulnerability, predict survival and toxicity, assist in clinical treatment decisions, and guide interventions in routine oncology practice; however, the uptake is hampered by limitations in both time and resources, as well as by a lack of expert interpretation...
February 2018: Journal of Oncology Practice
E Soto-Perez-de-Celis, R Cordoba, R Gironés, T Karnakis, I Paredero, Y Chavarri-Guerra, A P Navarrete-Reyes, J A Avila-Funes
Population aging represents a worldwide challenge. In Ibero-America (Spain, Portugal, and the American countries in which the Spanish or Portuguese language are spoken), the number of older adults is growing, leading to an increase in aging-related diseases such as cancer. Older adults already account for half of all cancer cases in Ibero-America, and this proportion will continue to increase. Furthermore, Ibero-American healthcare systems are not adequately prepared to provide care for older adults with cancer, mainly due to a lack of resources and generalized paucity of geriatric training for healthcare providers...
February 12, 2018: Clinical & Translational Oncology
Javier Flandes, Francisco J Soto, Rosa Cordovilla, Enrique Cases, Javier Alfayate
Since the publication of the National Emphysema Treatment Trial study, lung volume reduction (LVR) has been considered a therapeutic alternative for patients with advanced obstructive lung disease. The high complication rate of surgical LVR has led to the development of bronchoscopic LVR (BLVR). Of the currently available BLVR alternatives, coils and unidirectional endobronchial valves lead the list. The choice of each device depends on emphysema characteristics and presence of collateral ventilation. Evaluation of these patients at centers with expertise in interventional pulmonology and management of BLVR is strongly recommended...
March 2018: Clinics in Chest Medicine
Elena Roselló-Soto, Mahesha M Poojary, Francisco J Barba, Mohamed Koubaa, Jose M Lorenzo, Jordi Mañes, Juan Carlos Moltó
"Horchata de chufa" is a traditional Spanish beverage produced from tiger nuts (Cyperus esculentus L.). Due to its richness in nutritional compounds, it is highly perishable and its conservation by pasteurization and/or adding preservatives is required. Although efficient, conventional thermal treatment for pasteurization induces changes in the nutritional and sensory properties. Replacing conventional pasteurization by non-thermal technologies such as pulsed electric fields, ultraviolet, and high pressure, combined with moderate temperatures (<40°C) allows a reduction of energy consumption, along with the preservation of the most thermo-sensitive molecules...
March 2018: Food Research International
Hayati Samsudin, Rafael Auras, Gary Burgess, Kirk Dolan, Herlinda Soto-Valdez
A two-step solution based on the boundary conditions of Crank's equations for mass transfer in a film was developed. Three driving factors, the diffusion (D), partition (Kp,f) and convective mass transfer coefficients (h), govern the sorption and/or desorption kinetics of migrants from polymer films. These three parameters were simultaneously estimated. They provide in-depth insight into the physics of a migration process. The first step was used to find the combination of D, Kp,f and h that minimized the sums of squared errors (SSE) between the predicted and actual results...
March 2018: Food Research International
Jorge Velázquez-Castro, Andrés Anzo-Hernández, Beatriz Bonilla-Capilla, Moisés Soto-Bajo, Andrés Fraguela-Collar
There are economic and physical limitations when applying prevention and control strategies for urban vector borne diseases. Consequently, there are increasing concerns and interest in designing efficient strategies and regulations that health agencies can follow in order to reduce the imminent impact of viruses like Dengue, Zika and Chikungunya. That includes fumigation, abatization, reducing the hatcheries, picking up trash, information campaigns. A basic question that arise when designing control strategies is about which and where these ones should focus...
February 12, 2018: PLoS Neglected Tropical Diseases
Cristina Municio, Ángeles Dominguez-Soto, Sara Fuentelsaz-Romero, Amalia Lamana, Nuria Montes, Víctor D Cuevas, Raquel García Campos, José L Pablos, Isidoro González-Álvaro, Amaya Puig-Kröger
OBJECTIVES: Methotrexate (MTX) is the anchor drug for treatment of rheumatoid arthritis (RA), but the mechanism of its anti-inflammatory action is not fully understood. In RA, macrophages display a proinflammatory polarisation profile that resembles granulocyte-macrophage colony-stimulating factor (GM-CSF)-differentiated macrophages and the response to MTX is only observed in thymidylate synthase+ GM-CSF-dependent macrophages. To determine the molecular basis for the MTX anti-inflammatory action, we explored toll-like receptor (TLR), RA synovial fluid (RASF) and tumour necrosis factor receptor (TNFR)-initiated signalling in MTX-exposed GM-CSF-primed macrophages...
February 3, 2018: Annals of the Rheumatic Diseases
Carlos E Cuervo-Lozano, Adolfo Soto-Domínguez, Odila Saucedo-Cárdenas, Roberto Montes-de-Oca-Luna, Sergio Alonso-Romero, María Del Consuelo Mancías-Guerra, Eduardo Álvarez-Lozano
Treatment of massive bone defects is one of the most difficult problems to solve in orthopedics. At present, there is no consensus on the best way to resolve these problems. The aim of our study was to evaluate the effect of a three-dimensional bioimplant over massive bone defects, and to analyse if it improves the speed and quality of integration in recipient bone compared to allograft treatment. Fifteen female lambs with massive bone defects, surgically created in their tibias, were randomly divided into three groups of five lambs each: Group I -treated with the bioimplant; Group 2 -treated with the bioimplant plus nucleated cells of autologous bone marrow; Group 3 -treated with a frozen allograft...
February 2018: Tissue & Cell
Frank Daniel Martos-Benítez, Anarelys Gutiérrez-Noyola, Andrés Soto-García, Iraida González-Martínez, Ilionanys Betancourt-Plaza
Nutritional depletion is commonly observed in patients undergoing surgical treatment for a gastrointestinal malignancy. An appropriate nutritional intervention could be associated with improved postoperative outcomes. The study was aimed to determine the effect of a program of gastrointestinal rehabilitation and early postoperative enteral nutrition upon complications and clinical outcomes in patients who experienced gastrointestinal surgery for cancer. This is a prospective study (2013 January-2015 December) of 465 consecutive patients submitted to gastrointestinal surgery for cancer and admitted to an Oncological Intensive Care Unit...
February 10, 2018: Updates in Surgery
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