23 research outputs found

    Lack of Annexin A6 exacerbates liver dysfunction and reduces lifespan of Niemann-Pick type C protein-deficient mice

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    Niemann-Pick type C (NPC) disease is a lysosomal storage disorder characterized by cholesterol accumulation caused by loss-of-function mutations in the Npc1 gene. NPC disease primarily affects the brain, causing neuronal damage and affecting motor coordination. In addition, considerable liver malfunction in NPC disease is common. Recently, we found that the depletion of annexin A6 (ANXA6), which is most abundant in the liver and involved in cholesterol transport, ameliorated cholesterol accumulation in Npc1 mutant cells. To evaluate the potential contribution of ANXA6 in the progression of NPC disease, double-knockout mice (Npc1-/-/Anxa6-/-) were generated and examined for lifespan, eurologic and hepatic functions, as well as liver histology and ultrastructure. Interestingly, lack of ANXA6 in NPC1-deficient animals did not prevent the cerebellar degeneration phenotype, but further deteriorated their compromised hepatic functions and reduced their lifespan. Moreover, livers of Npc1-/-/Anxa6-/- mice contained a significantly elevated number of foam cells congesting the sinusoidal space, a feature commonly associated with inflammation. We hypothesize that ANXA6 deficiency in Npc1-/- mice not only does not reverse neurologic and motor dysfunction, but further worsens overall liver function, exacerbating hepatic failure in NPC disease

    Accounting Notebooks No.1. Teaching production

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    Los Cuadernos de Contaduría constituyen un esfuerzo de la Facultad de Contaduría Pública de la UNAB para proyectar su labor investigativa a la comunidad académica en los campos del saber relacionados con la disciplina contable y con el ejercicio profesional de la Contaduría. De acuerdo con nuestro Proyecto Educativo Institucional la investigación formativa es la que genera un clima intelectual que alimenta el proceso académico mediante la actualización y adaptación del conocimiento y del enriquecimiento de la práctica docente. Permite la organización de semilleros de investigación, la producción intelectual de profesores y estudiantes que se deriva del desarrollo de los núcleos integradores y de proyectos articulados a líneas institucionales de investigación. Este propósito se ha logrado, incentivando la presentación de artículos por parte de la comunidad académica, asumiendo que la meta del proceso investigativo no consiste solamente en producir nuevos conocimientos sino también en posibilitar la aplicación de los hallazgos en la solución de problemas específicos en las organizaciones. Con esta publicación la Facultad pretende crear un espacio de desarrollo intelectual, que le permita a los docentes y estudiantes del Programa, plasmar sus intereses académicos y profesionales en concordancia con el ejercicio profesional y las últimas tendencias en investigación contable y cumplir así, con la tarea de someternos a la crítica de pares para que por medio de los comentarios, sugerencias y aportes avancemos en hacer de la investigación un componente académico que redunde en beneficio social.Presentación 7 Globalización Económica: 9 nuevos modelos de producción frente a la Sociedad de la Información Implementación y difusión de 19 las Normas Internacionales ; de Contabilidad y del Estándar XBRL {mediante plataforma de E-learning Centros de Excelencia de E-learning para Contaduría en Colombia 35 Impuestos y Tecnología de la Información XBRL 51 Un modelo de acreditación que mejore la confianza pública en la presentación de servicios contables 65 Núcleos Integrados 75The Accounting Notebooks constitute an effort of the Faculty of Public Accounting of the UNAB to project its investigative work to the academic community in the fields of knowledge related to the accounting discipline and the professional practice of Accounting. According to our Institutional Educational Project, formative research is what generates an intellectual climate that feeds the academic process by updating and adapting knowledge and enriching teaching practice. It allows the organization of research seedbeds, the intellectual production of professors and students that derives from the development of integrating nuclei and projects articulated to institutional lines of research. This purpose has been achieved by encouraging the presentation of articles by the academic community, assuming that the goal of the research process is not only to produce new knowledge but also to enable the application of the findings in the solution of specific problems in organizations. . With this publication, the Faculty intends to create a space for intellectual development, which allows teachers and students of the Program to express their academic and professional interests in accordance with professional practice. and the latest trends in accounting research and thus fulfill the task of subjecting ourselves to peer criticism so that through comments, suggestions and contributions we advance in making research an academic component that results in social benefit

    La hora del museo: la sala Uriburu del Museo Histórico y Colonial de la Provincia de Buenos Aires (Luján, 1932)

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    El artículo analiza el proceso de creación de la Sala Uriburu del Museo Histórico y Colonial de la Provincia de Buenos Aires instalado en la ciudad de Luján y abierto al público en 1923. La sala fue inaugurada el 4 de septiembre de 1932 y estaba destinada a honrar la memoria del líder de la "Revolución" del 6 de septiembre de 1930. El objetivo es dar cuenta de los múltiples factores que incidieron en su instalación considerando que ella no puede explicarse solamente a través de la relación directa entre coyuntura política, atmósfera nacionalista y la necesidad de crear un mito para perpetuar su memoria. Proponemos entonces explorar las prácticas y dispositivos colectivos indispensables en el proceso de creación de evidencias materiales para sustentar la visualización de un relato histórico.O artigo analisa o processo de instalação da Sala Uriburu, do Museu Histórico e Colonial da Província de Buenos Aires, fundado na cidade de Luján e aberto ao público em 1923. A sala foi inaugurada em 4 de setembro de 1932, e destinava-se a "honrar a memória" do líder da "Revolução" de 6 de setembro de 1930, poucos meses depois de sua morte. O objetivo é dar conta dos múltiplos fatores que incidiram na instalação, considerando que ela não pode ser explicada somente através da relação direta entre conjuntura política, atmosfera nacionalista e a necessidade de criar um mito para perpetuar sua memória. Propomos, então, explorar as práticas e dispositivos coletivos indispensáveis no processo de criação de evidências materiais para sustentar a visualização de um relato histórico.This article analyzes the installation of Uriburu's Hall at the Museo Histórico y Colonial de la Provincia de Buenos Aires, institution established in Luján in 1923. This hall was opened to the public in September 1932, to celebrate the name and memory of the hero of the Revolution of 1930. Far from proposing a direct relationship between politics and museum displays, this article wants to display the several elements that colluded in the creation of this hall

    The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library

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    Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by the fourth phase of SDSS (SDSS-IV) across its first three years of operation (2014 July–2017 July). This is the third data release for SDSS-IV, and the 15th from SDSS (Data Release Fifteen; DR15). New data come from MaNGA—we release 4824 data cubes, as well as the first stellar spectra in the MaNGA Stellar Library (MaStar), the first set of survey-supported analysis products (e.g., stellar and gas kinematics, emission-line and other maps) from the MaNGA Data Analysis Pipeline, and a new data visualization and access tool we call "Marvin." The next data release, DR16, will include new data from both APOGEE-2 and eBOSS; those surveys release no new data here, but we document updates and corrections to their data processing pipelines. The release is cumulative; it also includes the most recent reductions and calibrations of all data taken by SDSS since first light. In this paper, we describe the location and format of the data and tools and cite technical references describing how it was obtained and processed. The SDSS website (www.sdss.org) has also been updated, providing links to data downloads, tutorials, and examples of data use. Although SDSS-IV will continue to collect astronomical data until 2020, and will be followed by SDSS-V (2020–2025), we end this paper by describing plans to ensure the sustainability of the SDSS data archive for many years beyond the collection of data

    Magellanic Woodpeckers in three national parks of central-southern Chile: habitat effects and population variation over the last two decades

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    A major challenge for protected areas is providing wildlife with enough suitable habitat to cope with stochastic environment and increased pressure from the surrounding landscapes. In this study, we addressed changes in local populations of Magellanic Woodpeckers (Campephilus magellanicus) occupying three national parks of central-southern Chile. We compared the breeding and postbreeding abundance of woodpeckers during the 1990s with the present (2016) abundance (n = 4 years), and assessed the extent to which abundance was explained by forest type and quality of foraging habitat (as quantified through the plant senescence reflectance index; PSRI). Results show a distinctive temporal variation in woodpecker abundance at each park, with local populations of Magellanic Woodpeckers declining by 42.2% in Conguillío National Park, but increasing by 34.3% in Nahuelbuta National Park. Woodpeckers responded to forest conditions within each park such that their abundance increased with high quality of foraging habitat, i.e., large PSRI values, and the presence of old-growth Monkey puzzle (Araucaria araucana) - Nothofagus pumilio mixed forest. Anecdotal evidence suggests that populations of woodpeckers in Conguillío National Park might have responded negatively to large-scale disturbances from recent forest fires affecting part of the forest area within park. Because stochastic events seemed to strongly mediate population changes, our findings suggest that regional conservation of Magellanic Woodpeckers requires expanding the current conservation area network in central-southern Chile
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