815 research outputs found

    El valor de los paradigmas de la historia del arte en la práctica del diseño gráfico

    Get PDF
    La historia del arte, en su camino para erigirse como una ciencia, ha ido adoptando y adaptando distintas metodologías de trabajo dependientes de los conocimientos y la cultura de cada época. En otras palabras, ha ido añadiendo prismas bajo los que observar su objeto de estudio, -la obra de arte-, que han dotado a la teoría del arte de una riqueza de interpretaciones y formas de acercarse a las imágenes de las que la teoría del diseño carece o bien aplica de forma más bien intuitiva y sin fundamentación teórica. Sin embargo, resulta algo evidente que las imágenes, sus formas, sus significados, así como lo que comunican son una parte consustancial del diseño gráfico. En este trabajo tratamos de descubrir si el conocimiento de la historia del arte resulta útil a los diseñadores. Creemos interesante saber si la investigación que proponemos armoniza con las necesidades profesionales del diseño y para observar si los métodos de análisis de la obra de arte son aplicables al diseño gráfico pretendemos conocer la opinión de los diseñadores sobre la utilidad de los diferentes paradigmas metodológicos del estudio del arte en relación a su actividad profesional. Por tanto, realizamos un cuestionario online a 274 diseñadores gráficos repartidos principalmente en Catalunya, Madrid, País Vasco, Valencia y Andalucía que nos ha permitido descubrir que los diseñadores gráficos se interesan especialmente por aquellos métodos que contribuyen a aportar conocimientos críticos sobre la realización formal de las piezas -ya sean pinturas o infografías- y sobre sus contenidos y significados.Art history, on its way to establish itself as a science, has been adopting and adapting different methods of work dependent knowledge and culture of each era. In other words, it has been adding prisms under which observe its subject, -the work of art, which have endowed art theory of a wealth of interpretations and ways of approaching the images that theory no design or applied rather intuitively and without theoretical foundation. However, it is evident that the images, forms, their meanings and what they communicate is an essential part of graphic design.In this paper we try to discover if knowledge of art history is useful to designers. We believe interesting to know whether the research we propose harmonizes with professional design needs and to see if the methods of analysis of the artwork are applicable to graphic design pretend to know the opinion of the designers on the usefulness of the different methodological paradigms of the study art in relation to their professional activity. Therefore, we conducted an online questionnaire to 274 graphic designers spread mainly in Catalonia, Madrid, Basque Country, Valecia and Andalusia that has allowed us to discover that graphic designers are especially interested in methods that help provide critical knowledge of the formal aspects of the pieces are paintings or-and infografías- and their content and meaning

    Valoración de los profesores y padres de alumnos con retraso mental de las aulas de aprendizaje de tareas de Álava

    Get PDF
    El objetivo de este trabajo es: a) presentar un cuestionario elaborado para valorar aspectos sobre la satisfacción, la intervención, y las creencias y expectativas acerca de la integración de los padres (n=68) y profesores (n=56) de los jóvenes con retraso mental que cursan el itinerario educativo de las Aulas de Aprendizaje de Tareas de Álava; y b) exponer los resultados más significativos obtenidos. Asimismo, se discuten las implicaciones teóricas y prácticas de dichos resultados

    Transcriptional control of the B3GALT5 gene by a retroviral promoter and methylation of distant regulatory elements

    Get PDF
    We focused on transcription factors and epigenetic marks that regulate the B3GALT5 gene through its retroviral long terminal repeat (LTR) promoter. We compared the expression levels of the B3GALT5 LTR transcript, quantitated by competitive RT-PCR, with those of the candidate transcription factors HNF1\u3b1/\u3b2 and Cdx1/2, determined by Western blot analysis, in colon cancer biopsies, various cell lines, and cell models serving as controls. We found that HNF1\u3b1/\u3b2 were easily detected, irrespective of the amount of LTR transcript expressed by the source, whereas Cdx1/2 were undetectable, and no sample lacking HNF1\u3b1/\u3b2 expressed the LTR transcript. On transfection in proper host cells, both HNF1\u3b1 and HNF1\u3b2 provided detectable LTR transcript, whereas shRNA-mediated silencing of HNF1\u3b2 impaired transcription. Treating cells with 5\u2032-aza-2\u2032-deoxycytidine (5AZA) strongly reduced expression, without affecting HNF1\u3b1/\u3b2, despite the lack of CpG islands in the LTR and proximal sequences. By electrophoresis mobility shift and luciferase reporter assays, the LTR promoter binding and activity did not correlate with the amounts of LTR transcript expressed in the cells and depended on the levels of the transcription factors. We conclude that HNF1\u3b1/\u3b2 are necessary but insufficient to activate and regulate B3GALT5 LTR transcription, which depends on unknown regulatory elements that are active when methylated and located outside of and far from the LTR promoter

    Use of Gene Therapy in a Subcutaneous Murine Model of Lung Cancer

    Get PDF
    OBJECTIVE: To assess the effectiveness of in vivo gene therapy to treat subcutaneous tumors generated from murine lung cancer cells. MATERIAL AND METHODS: C57BL/6 mice received subcutaneus injections of 5×105 cells from the murine Lewis lung cancer cell line. By 10 days, subcutaneous tumors of approximately 5 mm diameter were formed. At that point, treatment was provided by intratumor injection of a replication-defective recombinant adenovirus carrying the gene for thymidine kinase (AdCMV-Tk) or interleukin (IL) 12 (AdCMV-IL12), or by injection of syngeneic dendritic cells previously transduced with adenovirus containing the IL-12 gene (DC-IL12). Control groups were treated with saline or adenovirus containing the gene for β-galactosidase (AdCMV-LacZ), which functions as a reporter gene and does not have a therapeutic effect. The number of animals in each group ranged from 14 to 25 in experiments using adenovirus and from 10 to 12 in experiments using dendritic cells. Tumor size was followed for 3 weeks in the case of treatment with adenovirus and 4 weeks for treatment with dendritic cells. RESULTS: A significant reduction in subcutaneous tumor growth was observed in the groups treated with AdCMVTk, AdCMV-IL12, and DC-IL12 compared with control groups treated with saline or AdCMV-LacZ. The difference was statistically significant from day 7 of treatment in the AdCMV-Tk group, from day 9 in the AdCMV-IL12 group, and from day 10 in the DC-IL12 group, and in all cases it was maintained until the end of the follow-up period. CONCLUSIONS: Gene therapy with AdCMV-Tk, AdCMVIL12, or DC-IL12 is effective in our model of subcutaneous tumors arising from cells of the Lewis lung cancer cell line. The treatment leads to a significant reduction in tumor growth compared with control groups

    Outpatient Management of Malignant Pleural Effusion Using a Tunneled Pleural Catheter: Preliminary Experience

    Get PDF
    Inpatient management of malignant pleural effusion includes the placement of a conventional thoracostomy tube for drainage and talc slurry pleurodesis and/or a surgical approach consisting of video-assisted thoracoscopic talc insufflation. Both techniques require prolonged hospital stays of up to 1 week. Unfortunately, life expectancy in patients with this disease does not usually exceed 6 months, and so the primary aim of any palliative intervention intended to improve quality of life should be to avoid hospital admissions and to relieve pain as far as possible. Of the few outpatient alternatives to hospital management the most frequently used is repeated thoracentesis. We describe the outpatient management of malignant pleural effusion by placement of a tunneled pleural catheter in a patient with stage IIIB lung adenocarcinoma. In our opinion, the use of this catheter offers a viable alternative to conventional therapy and is better tolerated

    Hyperleptinaemia, respiratory drive and hypercapnic response in obese patients

    Get PDF
    Leptin is a powerful stimulant of ventilation in rodents. In humans, resistance to leptin has been consistently associated with obesity. Raised leptin levels have been reported in subjects with sleep apnoea or obesity-hypoventilation syndrome. The aim of the present study was to assess, by multivariate analysis, the possible association between respiratory centre impairment and levels of serum leptin. In total, 364 obese subjects (body mass index >or=30 kg.m(-2)) underwent the following tests: sleep studies, respiratory function tests, baseline and hypercapnic response (mouth occlusion pressure (P(0.1)), minute ventilation), fasting leptin levels, body composition and anthropometric measures. Subjects with airways obstruction on spirometry were excluded. Out of the 346 subjects undergoing testing, 245 were included in the current analysis. Lung volumes, age, log leptin levels, end-tidal carbon dioxide tension, percentage body fat and minimal nocturnal saturation were predictors for baseline P(0.1). The hypercapnic response test was performed by 186 subjects; log leptin levels were predictors for hypercapnic response in males, but not in females. Hyperleptinaemia is associated with a reduction in respiratory drive and hypercapnic response, irrespective of the amount of body fat. These data suggest the extension of leptin resistance to the respiratory centre

    Iron and Sphingolipids as Common Players of (Mal)Adaptation to Hypoxia in Pulmonary Diseases

    Get PDF
    Hypoxia, or lack of oxygen, can occur in both physiological (high altitude) and pathological conditions (respiratory diseases). In this narrative review, we introduce high altitude pulmonary edema (HAPE), acute respiratory distress syndrome (ARDS), Chronic Obstructive Pulmonary Disease (COPD), and Cystic Fibrosis (CF) as examples of maladaptation to hypoxia, and highlight some of the potential mechanisms influencing the prognosis of the affected patients. Among the specific pathways modulated in response to hypoxia, iron metabolism has been widely explored in recent years. Recent evidence emphasizes hepcidin as highly involved in the compensatory response to hypoxia in healthy subjects. A less investigated field in the adaptation to hypoxia is the sphingolipid (SPL) metabolism, especially through Ceramide and sphingosine 1 phosphate. Both individually and in concert, iron and SPL are active players of the (mal)adaptation to physiological hypoxia, which can result in the pathological HAPE. Our aim is to identify some pathways and/or markers involved in the physiological adaptation to low atmospheric pressures (high altitudes) that could be involved in pathological adaptation to hypoxia as it occurs in pulmonary inflammatory diseases. Hepcidin, Cer, S1P, and their interplay in hypoxia are raising growing interest both as prognostic factors and therapeutical targets

    Performance of the inFLUenza Patient-Reported Outcome (FLU-PRO) diary in patients with influenza-like illness (ILI)

    Get PDF
    BACKGROUND: The inFLUenza Patient Reported Outcome (FLU-PRO) measure is a daily diary assessing signs/symptoms of influenza across six body systems: Nose, Throat, Eyes, Chest/Respiratory, Gastrointestinal, Body/Systemic, developed and tested in adults with influenza. OBJECTIVES: This study tested the reliability, validity, and responsiveness of FLU-PRO scores in adults with influenza-like illness (ILI). METHODS: Data from the prospective, observational study used to develop and test the FLU-PRO in influenza virus positive patients were analyzed. Adults (≥18 years) presenting with influenza symptoms in outpatient settings in the US, UK, Mexico, and South America were enrolled, tested for influenza virus, and asked to complete the 37-item draft FLU-PRO daily for up to 14-days. Analyses were performed on data from patients testing negative. Reliability of the final, 32-item FLU-PRO was estimated using Cronbach's alpha (α; Day 1) and intraclass correlation coefficients (ICC; 2-day reproducibility). Convergent and known-groups validity were assessed using patient global assessments of influenza severity (PGA). Patient report of return to usual health was used to assess responsiveness (Day 1-7). RESULTS: The analytical sample included 220 ILI patients (mean age = 39.3, 64.1% female, 88.6% white). Sixty-one (28%) were hospitalized at some point in their illness. Internal consistency reliability (α) of FLU-PRO Total score was 0.90 and ranged from 0.72-0.86 for domain scores. Reproducibility (Day 1-2) was 0.64 for Total, ranging from 0.46-0.78 for domain scores. Day 1 FLU-PRO scores correlated (≥0.30) with the PGA (except Gastrointestinal) and were significantly different across PGA severity groups (Total: F = 81.7, p<0.001; subscales: F = 6.9-62.2; p<0.01). Mean score improvements Day 1-7 were significantly greater in patients reporting return to usual health compared with those who did not (p<0.05, Total and subscales, except Gastrointestinal and Eyes). CONCLUSIONS: Results suggest FLU-PRO scores are reliable, valid, and responsive in adults with influenza-like illness

    Lights and Shadows in the Use of Mesenchymal Stem Cells in Lung Inflammation, a Poorly Investigated Topic in Cystic Fibrosis

    Get PDF
    Mesenchymal stem cells (MSCs) are multipotent non-hematopoietic stem cells residing in many tissues, including the lung. MSCs have long been regarded as a promising tool for cell-based therapy because of their ability to replace damaged tissue by differentiating into the resident cell and repopulating the injured area. Their ability to release soluble factors and extracellular vesicles has emerged as crucial in the resolution of inflammation and injury. There is a growing literature on the use of MSCs and MSC secretome to hamper inflammation in different lung pathologies, including: asthma, pneumonia, acute lung injury (ALI), pulmonary hypertension, and chronic obstructive pulmonary disease (COPD). However, their potential therapeutic role in the context of Cystic Fibrosis (CF) lung inflammation is still not fully characterized. CF morbidity and mortality are mainly due to progressive lung dysfunction. Lung inflammation is a chronic and unresolved condition that triggers progressive tissue damage. Thus, it becomes even more important to develop innovative immunomodulatory therapies aside from classic anti-inflammatory agents. Here, we address the main features of CF and the implications in lung inflammation. We then review how MSCs and MSC secretome participate in attenuating inflammation in pulmonary pathologies, emphasizing the significant potential of MSCs as new therapeutic approach in CF
    corecore