Productividad Laboral en Arándanos: Rol del Género

52 p.El propósito de esta investigación fue determinar los niveles de productividad de trabajadores agrícolas de temporada con un enfoque en el rol del género. Para ello se evaluaron las principales variables socio-económicas que inciden sobre la productividad. Se aplicó una encuesta dirigida a trabajadores que realizaban labores de cosecha en el cultivo del arándano. Tales consultas se desarrollaron en nueve comunas de la Región del Maule durante los meses de diciembre de 2013 y abril de 2014. Las variables consideradas para evaluar la productividad son tres; el promedio de kilos cosechados, la velocidad de trabajo (kilos/hora) y el ingreso diario (pesos). Se agrupó la población objetivo con respecto a las siguientes variables; género; edad; nivel de educación; experiencia agrícola; jefa de hogar (mujeres). Para el análisis de los datos se utilizaron pruebas no paramétrica de Kruskal- Wallis y análisis de varianza ANOVA a través del programa estadístico SPSS (Statistical Package for the Social Sciences). La productividad laboral se ve afectada por diversos factores, entre los cuales destacan la edad, el género y la experiencia previa. Además se encontró que la educación y el rol como jefe de hogar no afectan de forma significativa la productividad, a diferencia de lo que otros autores indican./ABSTRACT:The main aim of this investigation was to determine the productivity levels of agricultural hired labor with an emphasis on the role of gender. For this purpose the main socio-economic variables that affect in the productivity were evaluated. A socio-economic survey was applied to five hundred forty blueberry workers in nine comunas belonging to Maule region central Chile. Three variables were considered in order to assess the labor productivity; average harvested (in kilograms), working speed (kilograms per/hour) and the daily income (Chilean pesos). The sample was grouped with respect to the variables; gender; age (women); level of education; farming experience; head of household (women). For data analysis purposes, a nonparametric Kruskal-Wallis test and ANOVA analysis were performed using SPSS (Statistical Package for Social Sciences) statistical program. Labor Productivity is affected by several factors, among the main results obtained show that the productivity of workers is affected by age, gender and previous experience in agriculture. It was also found that education and women head of household does not affect significantly to the labor productivity, unlike those others researchs suggest

Mast cell-mediated splanchnic cholestatic inflammation

Introduction Splanchnic mast cells increase in chronic liver and in acute-on-chronic liver diseases. We administered Ketotifen, a mast cell stabilizer, and measured the mast cells in the splanchnic organs of cholestatic rats. Material and Methods These groups were studied: sham-operated rats (S; n = 15), untreated microsurgical cholestasic rats (C; n = 20) and rats treated with Ketotifen: early (SK-e; n = 20 and CKe; n = 18), and late (SK-l; n = 15 and CK-l; n = 14). Results The cholestatic rats showed systemic and splanchnic impairments, such as ascites, portal hypertension, and biliary proliferation and fibrosis. The rats also showed a splanchnic increase of TNF-α, IL-1β and MCP-1, and a reduction of IL-4, IL-10 and antioxidants. An increase of VEGF in the ileum and mesenteric lymphatic complex was associated with a liver reduction of TGF-β1. Ketotifen reduces the degree of hepatic insufficiency and the splanchnic inflammatory mediators, as well as VEGF and TGF-ß1 levels. Ketotifen also reduces the connective tissue mast cells in the mesenteric lymphatic complex of cholestatic rats, while increases the hepatic mucosal mast cells. Conclusions In cholestatic rats, Ketotifen improves liver function and ascites, and also reduces pro-inflammatory mediators in the splanchnic area. The decrease in connective tissue mast cells in the mesenteric lymphatic complex due to the administration of Ketotifen would lead to the improvement of the inflammatory splanchnic response, and consequently the abovementioned complications

Uso de los nuevos anticoagulantes orales en el síndrome antifosfolipidico: revisión bibliográfica

Antecedentes. El síndrome antifosfolipídico es considerado a nivel mundial la trombofilia adquirida más abundante, con una prevalencia de 40 a 50 casos por cada 100.000 habitantes en general, con mayor predisposición en mujeres, con una relación 5:1 en contraste con pacientes varones. El tratamiento alternativo utilizado para esta patología en la última década se basa en la anticoagulación mediante anticoagulantes orales directos (ACOD), los cuales presenta una eficacia similar frente a los anticoagulantes tradicionales como las heparinas de bajo peso molecular (HBPM)  o los antagonistas de la vitamina K (AVK), esta nueva terapéutica resulta muy atractiva, debido a que no se requiere monitorización, posee menos interacciones con otros fármacos o alimentos, se prescriben en una dosis fija con un efecto anticoagulante más predecible, un inicio de acción rápida, con lo que se pretende mejorar la calidad de vida de los pacientes. Metodología. El presente estudio es una revisión bibliográfica de tipo Scoping review con metodología PRISMA utilizando las bases de datos SCOPUS, PUBMED y WEB OF SCIENCE a través de descriptores bibliográficos con la utilización de palabras clave aplicando criterios de elegibilidad de inclusión y exclusión. Objetivo. Describir el uso de los nuevos anticoagulantes orales directos en el síndrome antifosfolipídico. Discusión y Resultados. Con un total de 16 artículos seleccionados se demostró que el uso de los nuevos anticoagulantes orales en la prevención secundaria es igual de efectiva a comparación de los anticoagulantes clásicos Conclusión. Los ACOD brindan características que pretenden brindar una mejorar calidad de vida de los pacientes sin embargo solo se recomienda en la proxifalis secundaria, luego de un primer evento tromboembólico y no se recomienda usar en trombosis arterial o pacientes doble o triple positivo

Generation of NKX2.5(GFP) Reporter Human iPSCs and Differentiation Into Functional Cardiac Fibroblasts

Direct cardiac reprogramming has emerged as an interesting approach for the treatment and regeneration of damaged hearts through the direct conversion of fibroblasts into cardiomyocytes or cardiovascular progenitors. However, in studies with human cells, the lack of reporter fibroblasts has hindered the screening of factors and consequently, the development of robust direct cardiac reprogramming protocols.In this study, we have generated functional human NKX2.5(GFP) reporter cardiac fibroblasts. We first established a new NKX2.5(GFP) reporter human induced pluripotent stem cell (hiPSC) line using a CRISPR-Cas9-based knock-in approach in order to preserve function which could alter the biology of the cells. The reporter was found to faithfully track NKX2.5 expressing cells in differentiated NKX2.5(GFP) hiPSC and the potential of NKX2.5-GFP + cells to give rise to the expected cardiac lineages, including functional ventricular- and atrial-like cardiomyocytes, was demonstrated. Then NKX2.5(GFP) cardiac fibroblasts were obtained through directed differentiation, and these showed typical fibroblast-like morphology, a specific marker expression profile and, more importantly, functionality similar to patient-derived cardiac fibroblasts. The advantage of using this approach is that it offers an unlimited supply of cellular models for research in cardiac reprogramming, and since NKX2.5 is expressed not only in cardiomyocytes but also in cardiovascular precursors, the detection of both induced cell types would be possible. These reporter lines will be useful tools for human direct cardiac reprogramming research and progress in this field.This work was supported by PID 2019-107150RB-I00/AEI/ 10.13039/501100011033 to XC-V; by the “Ramón y Cajal” State Program, Ministry of Economy and Competitivenes

COVID-19 : Age, Interleukin-6, C-reactive protein, and lymphocytes as key clues from a multicentre retrospective study

Background: The SARS-CoV-2 infection has widely spread to become the greatest public health challenge to date, the COVID-19 pandemic. Different fatality rates among countries are probably due to non-standardized records being carried out by local health authorities. The Spanish case-fatality rate is 11.22%, far higher than those reported in Asia or by other European countries. A multicentre retrospective study of demographic, clinical, laboratory and immunological features of 584 Spanish COVID-19 hospitalized patients and their outcomes was performed. The use of renin-angiotensin system blockers was also analysed as a risk factor. Results: In this study, 27.4% of cases presented a mild course, 42.1% a moderate one and for 30.5% of cases, the course was severe. Ages ranged from 18 to 98 (average 63). Almost 60 % (59.8%) of patients were male. Interleukin 6 was higher as severity increased. On the other hand, CD8 lymphocyte count was significantly lower as severity grew and subpopulations CD4, CD8, CD19, and NK showed concordant lowering trends. Severity-related natural killer percent descents were evidenced just within aged cases. A significant severity-related decrease of CD4 lymphocytes was found in males. The use of angiotensin-converting enzyme inhibitors was associated with a better prognosis. The angiotensin II receptor blocker use was associated with a more severe course. Conclusions: Age and age-related comorbidities, such as dyslipidaemia, hypertension or diabetes, determined more frequent severe forms of the disease in this study than in previous literature cohorts. Our cases are older than those so far reported and the clinical course of the disease is found to be impaired by age. Immunosenescence might be therefore a suitable explanation for the hampering of immune system effectors. The adaptive immunity would become exhausted and a strong but ineffective and almost deleterious innate response would account for COVID-19 severity. Angiotensin-converting enzyme inhibitors used by hypertensive patients have a protective effect in regards to COVID-19 severity in our series. Conversely, patients on angiotensin II receptor blockers showed a severer disease

Participación y diversidad. Avanzando en la participación de las personas inmigrantes en la sociedad civil de Andalucía. Libro del proyecto y transcripción de las sesiones

Hasta el momento actual, la Inmigración ha venido abordándose bajo un enfoque estrictamente laboral o administrativo, fundamentado en los flujos que el mercado de trabajo demandaba. En menor medida desde la perspectiva del ejercicio de la ciudadanía de las personas inmigrantes, que han venido a buscar una nueva vida en Andalucía, ni en la consideración de que, además, ello le supone ejercer derechos básicos y contribuir a enriquecer y dar nuevas perspectivas y valores a nuestra sociedad civil. Desde este enfoque, el capital social que supone la Inmigración resulta necesario e imprescindible en los procesos de participación y empoderamiento de la sociedad civil de nuestra democracia. Para determinar una estrategia y encontrar las herramientas más adecuadas que nos permitan avanzar en este sentido, es para lo que hemos impulsado el proyecto "Participación y Diversidad" y los dos foros de indagación y debate participativo, que se han celebrado en Sevilla y en Granada entre octubre y noviembre de 2013 y cuyos resultados tienen ustedes en este libro. Por lo general, las personas inmigrantes sólo son llamadas a participar de los asuntos públicos cuando éstos tienen que ver con el tema específico de la inmigración. Pero, en este caso, hemos querido ir más allá abordando la cuestión de la inmigración no en términos particulares sino en relación con su papel en el conjunto de nuestra sociedad, en el procomún; trabajando sobre ese capital social que aportan y sobre el papel ciudadano que desempeñan -o que queremos que aporten y desempeñen las personas inmigrantes. En definitiva, trabajar sobre la participación real y efectiva en nuestra sociedad civil, de las personas que vienen de otros países (de la UE, países desarrollados o en vías de desarrollo) y con otras visiones del mundo, a compartir espacio y vida con nosotros, en igualdad con los andaluces y las andaluzas de origen.Pp. (1-129

Seminario de Economía Mexicana

Serie de ponencias referentes al Seminario de Economía Mexicana. Memorias del Seminario de Economía Mexicana de 199

Programa piloto de uso del portafolio como herramienta docente en el Grado de Biología

Memoria final del proyecto de Innovación educativa "Programa piloto de uso del portafolio como herramienta docente en el Grado de Biología

Reporte de Mercados Financieros - primer trimestre de 2016

El Banco de la República (BR) genera información para la toma de decisiones, la rendición de cuentas y la difusión al público. En particular, el Reporte de Mercados Financieros está enmarcado dentro del principio de difusión al público y contribuye a cumplir con el servicio que presta el Banco de ofrecer información e investigación económica de calidad

The direct effect of fibroblast growth factor 23 on vascular smooth muscle cell phenotype and function

[Background] In chronic kidney disease (CKD) patients, increased levels of fibroblast growth factor 23 (FGF23) are associated with cardiovascular mortality. The relationship between FGF23 and heart hypertrophy has been documented, however, it is not known whether FGF23 has an effect on vasculature. Vascular smooth muscle cells VSMCs may exhibit different phenotypes; our hypothesis is that FGF23 favours a switch from a contractile to synthetic phenotype that may cause vascular dysfunction. Our objective was to determine whether FGF23 may directly control a change in VSMC phenotype.[Methods] This study includes in vitro, in vivo and ex vivo experiments and evaluation of patients with CKD stages 2–3 studying a relationship between FGF23 and vascular dysfunction.[Results] In vitro studies show that high levels of FGF23, by acting on its specific receptor FGFR1 and Erk1/2, causes a change in the phenotype of VSMCs from contractile to synthetic. This change is mediated by a downregulation of miR-221/222, which augments the expression of MAP3K2 and PAK1. miR-221/222 transfections recovered the contractile phenotype of VSMCs. Infusion of recombinant FGF23 to rats increased vascular wall thickness, with VSMCs showing a synthetic phenotype with a reduction of miR-221 expression. Ex-vivo studies on aortic rings demonstrate also that high FGF23 increases arterial stiffening. In CKD 2–3 patients, elevation of FGF23 was associated with increased pulse wave velocity and reduced plasma levels of miR-221/222.[Conclusion] In VSMCs, high levels of FGF23, through the downregulation of miR-221/222, causes a change to a synthetic phenotype. This change in VSMCs increases arterial stiffening and impairs vascular function, which might ultimately worsen cardiovascular disease.This work was supported by a Spanish government grant from the Programa Nacional I+D+I 2013–2016 and Instituto de Salud Carlos III (ISCIII) grants PI18/0138 and PI21/0654 co-financing from European Funds (FEDER), Consejería de Salud (grants PI-0136 and PI-0169-2020) from the Junta de Andalucía, Framework Programme 7 Syskid UE grant FP7-241544, and EUTOX and REDinREN from the ISCIII. N.V. and J.M.D.-T. were supported by Consejería de Economía, Innovación, Ciencia y Empleo (grant CVI-7925) from the Junta de Andalucía. Y.A. and J.R.M.-C. are senior researchers supported by the Nicolás Monardes Programme, Consejería de Salud-Servicio Andaluz de Salud (Junta de Andalucía).Peer reviewe