132 resultados para Elizondo Colin, Miguel María, 1854-
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Una de las contribuciones más sugestivas de los Cultural Studies es la concepción del producto cultural como un objeto creador, hacedor, o promotor de significados, que está ligado, además, a unas determinadas prácticas sociales. Desde esta perspectiva, el estudio del producto cultural únicamente resultaría completo si tenemos en cuenta no solo el texto en sí mismo, aislado e independiente, sino con él también todos los procedimientos y mecanismos que intervienen en la dotación de la multiplicidad de sentidos por los que se caracteriza dicho producto, y que vienen determinados por el circuito cultural (Johnson, Jordan, Du Gay, Hall) en el que se integra. El objetivo de este trabajo es analizar La tía Tula (1963) de Miguel Picazo, desde el marco teórico de los Estudios Culturales, y en concreto del circuito de la cultura, recorriendo -a partir de la propuesta de Stuart Hall- cada uno de los procesos que integran el circuito, desde su producción hasta su recepción o consumo, pasando por las fases de regulación, representación e identidad. De este modo, incluyendo en nuestro estudio estos cinco procedimientos que llevaron a la creación del producto tal cual se nos presenta, podremos acceder a una comprensión más global del objeto cultural que es la película de Picazo.
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Crítico de la revista Quimera , y colaborador de ABCD, The Barcelona Review, o el blog After-post, Miguel Espigado (Salamanca, 1981) debutó el año pasado en el terreno de la creación literaria con El cielo de Pekín (Lengua de Trapo, 2011), una novela que encuentra sus raíces en experiencias vividas, observadas o reinventadas por el autor en la capital china, y que entronca con la línea posmoderna cultivada por autores como Agustín Fernández Mallo y otros integrantes de la denominada"Generación Nocilla".
Treatment of cancer with oral drugs: a position statement by the Spanish Society of Medical Oncology
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Cancer treatment involves the participation of multiple medical specialties and, as our knowledge of the disease increases, this fact becomes even more apparent. The degree of multidisciplinarity is determined by several factors, which include the severity and type of disease, the increasing diversity in the available pharmacological and non-pharmacological therapies, and the range of specialists involved in cancer therapy, such as medical oncologists, radiotherapists, gynecologists, gastroenterologists, urologists, surgeons, and pneumologists, among others. Across Europe, the situation of cancer care can be variable due to the diversity of health systems, differences in drug reimbursement, and the degree of establishment of Medical Oncology as a medical specialty in the European Union states.
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Background and purpose: The TP53 induced glycolysis and apoptosis regulator (TIGAR) functions to lower fructose-2,6-bisphosphate (Fru-2,6-P2) levels in cells, consequently decreasing glycolysis and leading to the scavenging of reactive oxygen species (ROS), which correlate with a higher resistance to cell death. The decrease in intracellular ROS levels in response to TIGAR may also play a role in the ability of p53 to protect from the accumulation of genomic lesions. Given these good prospects of TIGAR for metabolic regulation and p53-response modulation, we analyzed the effects of TIGAR knockdown in U87MG and T98G glioblastoma-derived cell lines. Methods/results: After TIGAR-knockdown in glioblastoma cell lines, different metabolic parameters were assayed, showing an increase in Fru-2,6-P2, lactate and ROS levels, with a concomitant decrease in reduced glutathione (GSH) levels. In addition, cell growth was inhibited without evidence of apoptotic or autophagic cell death. In contrast, a clear senescent phenotype was observed. We also found that TIGAR protein levels were increased shortly after irradiation. In addition, avoiding radiotherapy-triggered TIGAR induction by gene silencing resulted in the loss of capacity of glioblastoma cells to form colonies in culture and the delay of DNA repair mechanisms, based in c-H2AX foci, leading cells to undergo morphological changes compatible with a senescent phenotype. Thus, the results obtained raised the possibility to consider TIGAR as a therapeutic target to increase radiotherapy effects. Conclusion: TIGAR abrogation provides a novel adjunctive therapeutic strategy against glial tumors by increasing radiation-induced cell impairment, thus allowing the use of lower radiotherapeutic doses.
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Introducción. La codeleción 1p19q (LOH1p19q) confiere a los tumores oligodendrogliales quimiosensibilidad y un mejor pronóstico en relación con otros gliomas. La investigación dirigida a identificar características radiológicas asociadas a LOH1p19q ha despertado gran interés en los últimos años. Objetivos. Confirmar la existencia de heterogeneidad regional de los parámetros moleculares en los gliomas oligodendrogliales, valorar la asociación entre el perfil genético y determinadas características radiológicas y clínicas, y analizar el valor pronóstico de éstas. Pacientes y métodos. Se incluyeron 54 pacientes tratados según un protocolo preestablecido común. Se valoraron las secuencias T1, con/sin gadolinio, y T2 de la resonancia magnética preoperatoria a ciegas de la información molecular y clínica. El análisis de LOH se efectuó sobre muestras pareadas de ADN tumoral y genómico. Resultados. La presencia de LOH1p se halló fuertemente asociada a LOH19q (p < 0,0001). LOH1p19q resultó más frecuente en los tumores situados en el lóbulo frontal (odds ratio, OR = 5,38; intervalo de confianza del 95%, IC 95% = 1,51-19,13; p = 0,007) y sin necrosis radiológica (OR = 0,17; IC 95% = 0,03-0,80; p = 0,02). La localización frontal (riesgo relativo, RR = 4,499; IC 95% = 1,027-193,708; p = 0,046), la necrosis radiológica (RR = 0,213; IC 95% = 0,065-0,700; p = 0,011) y el grado de resección (RR = 9,231; IC 95% = 1,737-49,050; p = 0,009) resultaron factores pronósticos independientes de supervivencia global. Conclusiones. En los tumores oligodendrogliales, además del análisis histológico y el estudio genético-molecular, la valoración de determinadas características radiológicas puede resultar de gran utilidad para definir subgrupos de pacientes con pronóstico y respuesta al tratamiento similares. Los esfuerzos deben dirigirse, por tanto, hacia la utilización combinada de todos los recursos disponibles en cada centro.
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Background: Polyphenols may lower the risk of cardiovascular disease (CVD) and other chronic diseases due to their antioxidant and anti-inflammatory properties, as well as their beneficial effects on blood pressure, lipids and insulin resistance. However, no previous epidemiological studies have evaluated the relationship between the intake of total polyphenols intake and polyphenol subclasses with overall mortality. Our aim was to evaluate whether polyphenol intake is associated with all-cause mortality in subjects at high cardiovascular risk. Methods: We used data from the PREDIMED study, a 7,447-participant, parallel-group, randomized, multicenter, controlled five-year feeding trial aimed at assessing the effects of the Mediterranean Diet in primary prevention of cardiovascular disease. Polyphenol intake was calculated by matching food consumption data from repeated food frequency questionnaires (FFQ) with the Phenol-Explorer database on the polyphenol content of each reported food. Hazard ratios (HR) and 95% confidence intervals (CI) between polyphenol intake and mortality were estimated using time-dependent Cox proportional hazard models. Results: Over an average of 4.8 years of follow-up, we observed 327 deaths. After multivariate adjustment, we found a 37% relative reduction in all-cause mortality comparing the highest versus the lowest quintiles of total polyphenol intake (hazard ratio (HR) = 0.63; 95% CI 0.41 to 0.97; P for trend = 0.12). Among the polyphenol subclasses, stilbenes and lignans were significantly associated with reduced all-cause mortality (HR =0.48; 95% CI 0.25 to 0.91; P for trend = 0.04 and HR = 0.60; 95% CI 0.37 to 0.97; P for trend = 0.03, respectively), with no significant associations apparent in the rest (flavonoids or phenolic acids). Conclusions: Among high-risk subjects, those who reported a high polyphenol intake, especially of stilbenes and lignans, showed a reduced risk of overall mortality compared to those with lower intakes. These results may be useful to determine optimal polyphenol intake or specific food sources of polyphenols that may reduce the risk of all-cause mortality.
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Within the scope of the TECNOLONIAL (HAR2008-02834/HIST) project, an archaeologi- cal and archaeometric research is being conduct- ed in order to clarify and systematize transport jars production in the Iberian peninsula and their distribution abroad, especially to the Americas, from the 15th to the 17th century. The production centre of Seville, in the Crown of Castile, produced large glazed and unglazed transport jars, called botijas, which were mainly devoted to the Atlantic trade network. The pres- ent study accounts for the first results obtained from an initial sample of 34 transport jars dated around the 15th-16th centuries from the produc- tion centre of Seville and the reception site of Santa María de la Antigua del Darién (gulf of Urabá, Colombia). This latter site is especially significant since it was the first Spanish founda- tion (1510) in continental America that obtained the title of town, and was the seat for the Governor of the new region called Castilla de Oro, as well as for the first diocese. All individuals were analyzed by means of x-ray fluorescence and diffraction analyses and then compared with the majolica production database from Seville. The results enabled us to define the first refer- ence groups for such modern transport jars, and to get a first insight into the jars coming to the Americas in the early 16th century whose prove- nance can be linked to Seville, but not Triana.
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Maintaining and acquiring the pluripotent cell state in plants is critical to tissue regeneration and vegetative multiplication. Histone-based epigenetic mechanisms are important for regulating this undifferentiated state. Here we report the use of genetic and pharmacological experimental approaches to show that Arabidopsis cell suspensions and calluses specifically repress some genes as a result of promoter DNA hypermethylation. We found that promoters of the MAPK12, GSTU10 and BXL1 genes become hypermethylated in callus cells and that hypermethylation also affects the TTG1, GSTF5, SUVH8, fimbrin and CCD7 genes in cell suspensions. Promoter hypermethylation in undifferentiated cells was associated with histone hypoacetylation and primarily occurred at CpG sites. Accordingly, we found that the process specifically depends on MET1 and DRM2 methyltransferases, as demonstrated with DNA methyltransferase mutants. Our results suggest that promoter DNA methylation may be another important epigenetic mechanism for the establishment and/or maintenance of the undifferentiated state in plant cells.
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The purpose of this descriptive survey was to investigate the risk perceptions of smoking in a sample of 1,510 Spanish adolescents(49.1% males; mean age = 14.03; SD = 1.28). In addition, the present research categorised adolescents into one of the fourstages of smoking acquisition, as described by the Transtheoretical Model of Change (TMC): Precontemplation (notthinking about trying smoking in the next 6 months), Contemplation (thinking about trying smoking in the next 6 months), Preparation (thinking about starting smoking in the next 30 days) and Action (smokers), by gender and age. The results showed that age and risk perceptions are important variables in the progression through the stages of change towards regular tobacco consumption (Action stage). These results clearly demonstrate the importance of starting antismoking campaigns at an early age to prevent smoking acquisition or the thought of starting in the near future. These findings also highlight the need to continuously remind adolescents about the negative consequences of smoking
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The emergence and pandemic spread of a new strain of influenza A (H1N1) virus in 2009 resulted in a serious alarm in clinical and public health services all over the world. One distinguishing feature of this new influenza pandemic was the different profile of hospitalized patients compared to those from traditional seasonal influenza infections. Our goal was to analyze sociodemographic and clinical factors associated to hospitalization following infection by influenza A(H1N1) virus. We report the results of a Spanish nationwide study with laboratory confirmed infection by the new pandemic virus in a case-control design based on hospitalized patients. The main risk factors for hospitalization of influenza A (H1N1) 2009 were determined to be obesity (BMI≥40, with an odds-ratio [OR] 14.27), hematological neoplasia (OR 10.71), chronic heart disease, COPD (OR 5.16) and neurological disease, among the clinical conditions, whereas low education level and some ethnic backgrounds (Gypsies and Amerinds) were the sociodemographic variables found associated to hospitalization. The presence of any clinical condition of moderate risk almost triples the risk of hospitalization (OR 2.88) and high risk conditions raise this value markedly (OR 6.43). The risk of hospitalization increased proportionally when for two (OR 2.08) or for three or more (OR 4.86) risk factors were simultaneously present in the same patient. These findings should be considered when a new influenza virus appears in the human population
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[spa]La intención de este artículo es explorar la relación entre poesía, filosofía y el concepto de "lo imposible". Para ello, me propongo revisar no sólo ciertos textos de Zambrano, sino también algunos momentos de la obra de Georges Bataille, en los que estos autores estudiaron, desde dos perspectivas muy distintas, la categoría mencionada.
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Las Señoras del Rosario inauguraron su Sociedad de Beneficencia el 25 de junio de 1854. El objetivo de las mujeres rosarinas fue garantizar la supervivencia de los enfermos y de las enfermas de la sociedad civil, y por ello decidieron crear un hospital en la zona más alejada del núcleo urbano, que hoy corresponde a la zona macrocéntrica de la ciudad. Esta Sociedad fue la primera de la República Argentina que se dedicó a la atención de la salud, y por ello en octubre del año siguiente las socias decidieron fundar el primer Hospital de Caridad de la ciudad destinado a los habitantes carentes de recursos y no militares de profesión.