Identificación y localización de una nueva especie de Tripsacum spp. en Nayarit, México

Existe interés nacional por conservar la biodiversidad del maíz (Zea mays L.) y a sus parientes silvestres, en virtud del peligro inminente de la pérdida de dicha diversidad por factores externos bióticos, abióticos, socioeconómicos, políticos y comerciales. El objetivo del presente estudio fue verificar la presencia de nuevas especies de Tripsacum spp., y afinar el conocimiento de su diversidad genética y distribución geográfica actual en Nayarit, México. La recolección de germoplasma se realizó mediante recorridos de campo dirigidos a nuevas aéreas con base en antecedentes de colectas previas. Se colectaron muestras de semilla y material vegetativo para su regeneración, identificación y caracterización posterior. Asimismo se concentraron los datos de pasaportes correspondientes. Durante 2007 se colectaron en Nayarit 117 materiales de Tripsacum en los municipios de Ahuacatlán, Jala, Santa María del Oro, Santiago Ixcuintla, Tepic y Jalisco. Los materiales colectados fueron clasificados como T. dactyloides, T. laxum, T. maizar y T. floridanum. El presente estudio constituye el primer reporte sobre la presencia de Tripsacum floridanum en el Estado de Nayarit, México

Are Borrmann’s Types of Advanced Gastric Cancer Distinct Clinicopathological and Molecular Entities? A Western Study

Most studies on the clinicopathological impact of Borrmann classification for gastric cancer (GC) have been performed in Asian patients with type IV tumors, and immunohistochemical features of Borrmann types have scarcely been analyzed. We assessed the clinicopathological, molecular features and prognostic value of Borrmann types in all patients with advanced GC resected in a Western institution (n = 260). We observed a significant relationship between Borrmann types and age, systemic symptoms, tumor size, Laurén subtype, presence of signet-ring cells, infiltrative growth, high grade, tumor necrosis, HERCEPTEST positivity, microsatellite instability (MSI) and molecular subtypes. Polypoid GC showed systemic symptoms, intestinal-type histology, low grade, expansive growth and HERCEPTEST positivity. Fungating GC occurred in symptomatic older patients. It presented intestinal-type histology, infiltrative growth and necrosis. Ulcerated GC showed smaller size, intestinal-type histology, high grade and infiltrative growth. Most polypoid and ulcerated tumors were stable-p53-not overexpressed or microsatellite unstable. Flat lesions were high-grade diffuse tumors with no MSI, and occurred in younger and less symptomatic patients. No association was found between Borrmann classification and prognosis. According to our results, Borrmann types may represent distinct clinicopathological and biological entities. Further research should be conducted to confirm the role of Borrmann classification in the stratification of patients with advanced GC

Numerical simulation of earthquakes and landslides generated tsunamis. From real events to hazard assessment

Workshop. Alboran Domain and Gibraltar Arc: Geological Research and Natural Hazards - El dominio de Alborán y el Arco de Gibraltar: Investigación geológica y riesgos naturales - Le Domaine Alboran et l'Arch de Gibraltar: Recherche géologique et risques naturels, 16-18 octubre 2019, Granada..-- 2 pagesIn the framework of natural hazard assessments, the convenience of using numerical models well adapted to the geological phenomena to be studied, is a valuable resource. In the context of the Alboran domain and Gibraltar Arc, the study of tsunami hazards related to submarine earthquakes or, even with combined sources involving landslides, is a major interest problem in terms of citizen protection. In this framework, some numerical schemes called HySEA, have been developed to provide reliable and efficient responses to these challenges. HySEA (Hyperbolic Systems and Efficient Algorithms) software consists of a family of geophysical codes based on either single layer, two-layer stratified systems or multilayer shallow water models. HySEA codes have been developed by EDANYA Group (https://www.uma.es/edanya) from the University of Málaga (UMA) for more than a decade and they are in continuous evolution and upgrading. Initially, the software was developed and the numerical algorithms implemented and published under no particular name. Several developments have been published in peer-review international journals since 2005 where different analytical and experimental test cases have been presented. Ordered by year of publication, some of these model developments can be found in Castro el al. (2005, 2006, 2008, 2012a), Gallardo et al., (2007) and de la Asunción et al. (2013). In September 2013, at ITS 2013, held at Göcek (Turkey) the ensemble of all the codes was named as HySEA for the very first time, and Landslide-HySEA (for aerial or submarine landslides) and Tsunami-HySEA presented in the two separate contributions González-Vida et al. (2013) and Macías et al. (2013b), respectively. Tsunami-HySEA is a numerical model specifically designed for the simulation of tsunamis with seismic origin. It combines robustness, reliability and good accuracy in a model based on GPU architecture that can be run in much faster than real time (FTRT) computational times. Besides all this, much effort has been made to develop a specific HySEA code suitable for tsunami computations in the framework of Tsunami Early Warning Systems (TEWS). The TEWS version of Tsunami-HySEA is currently the core numerical code at INGV (Instituto Nazionale di Geofisica e Vulcanologia) of the Italian TEWS. It has been also adopted by the JRC (Joint Research Centre of the European Commission), being the kernel of the tsunami computations provided by the UNESCO GDACS (Global Disaster Alert Coordination System) service. Also has been adopted by the Spanish IGN (Instituto Geográfico Nacional) in its under-development TEWS. During 2017, Tsunami-HySEA was also validated by the NTHMP (NOAA Tsunami Hazard Mitigation Program) in several workshops and currently can be officially used by any public agency of the United States. Concerning landslide-generated tsunamis, a stratified two-layer Savage-Hutter shallow water model, the Landslide-HySEA model, was implemented based on Fernández-Nieto et al. (2008) and incorporated to the HySEA family. Validation of this code comparing numerical results with the laboratory experiments of Heller and Hager (2011) and Fritz et al. (2001) can be found at Sánchez-Linares (2011). A milestone in the validation process of this code consisted in the numerical simulation of the Lituya Bay 1958 mega-tsunami with real topo-bathymetric data in González-Vida et al. (2019). This validation was carried out under a research contract with PMEL/NOAA. The result of this project led NCTR to adopt Landslide-HySEA as the numerical code used to generate initial conditions for the MOST model to be initialized in the case of landslide-generated tsunami scenarios. Both models, Tsunami-HySEA and Landslide-HySEA have been used in the context of the DAMAGE project to make assessments about the tsunamigenic potential hazard of certain faults located in the Alboran domain. Regarding Landslide-HySEA, it is used in the framework of the assessment of the tsunamigenic potential hazard of possible landslides in several reservoirs in Andaluci

Numerical simulation of earthquakes and landslides generated tsunamis from real events to hazard assessment

Workshop Alboran domain and Gibraltar Arc: geological research and natural hazards. Granada (Spain), 16-18 october, 201

Architecture and evolution of a minute plant genome

It has been argued that the evolution of plant genome size is principally unidirectional and increasing owing to the varied action of whole-genome duplications (WGDs) and mobile element proliferation1. However, extreme genome size reductions have been reported in the angiosperm family tree. Here we report the sequence of the 82-megabase genome of the carnivorous bladderwort plant Utricularia gibba. Despite its tiny size, the U. gibba genome accommodates a typical number of genes for a plant, with the main difference from other plant genomes arising from a drastic reduction in non-genic DNA. Unexpectedly, we identified at least three rounds of WGD in U. gibba since common ancestry with tomato (Solanum) and grape (Vitis). The compressed architecture of the U. gibba genome indicates that a small fraction of intergenic DNA, with few or no active retrotransposons, is sufficient to regulate and integrate all the processes required for the development and reproduction of a complex organism

Estudios multidisciplinarios en Ciencias de la Salud

Es una distinción, como miembro de la Comisión del Programa del Doctorado en Ciencias de la Salud de la Universidad Autónoma del Estado de México, presentar el libro titulado Estudios multidisciplinarios en Ciencias de la Salud, en el que distinguidos y reconocidos investigadores, entusiastas y comprometidos alumnos del programa nos dan a conocer los resultados de sus proyectos de investigación, trabajos que forman parte de los requisitos para acceder al grado de doctor. Entre las razones que invitan a la lectura del libro destaca su contenido conformado con la participación de autores en cuatro áreas en el campo de la salud: Odontología, Ciencias Médicas y Nutrición, Ciencias de la Conducta, y Enfermería y Obstetricia, quienes contribuyen a incrementar el acervo del conocimiento en cada área, en favor de la ciencia, la tecnología, y la salud física y mental de la población.Universidad Autónoma del Estado de México