28 research outputs found

    Differential-mode to common-mode conversion detector based on rat-race hybrid couplers : analysis and application to differential sensors and comparators

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    Altres ajuts: M. Gil acknowledges the Universidad Politécnica de Madrid Young Researchers Support Program (VJIDOCUPM18MGB) for its suppor

    Dynamic interaction of SARAF with STIM1 and orai1 to modulate store-operated calcium entry

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    El flujo de Ca2+ por almacenado por canales de Ca2+ es un mecanismo importante para la homeostasis intracelular de Ca2+ y la función celular. Aquí presentamos la evidencia de la interacción dinámica entre el factor regulador asociado SOCE (SARAF), STIM1 y Orai1. La expresión atenuada SARAF y la interacción SOCE STIM1-Orai1 en células expresan endógenamente a STIM1 y Orai1 mientras RNAi está condicionada por silenciamiento de SARAF induciendo efectos opuestos. SARAF menoscaba la asociación entre Orai1 y la activación de Orai1 del pequeño fragmento de STIM1 expresada en la STIM1-L115-401NG deficiente de células. En tratamiento de la celda con agonistas o thapsigargin fisiológico resulta en asociación directa de SARAF con Orai1. La interacción de ESTIMI1 independiente de SARAF con Orai1 conduce a la activación de este canal. Las células expresan endógenamente STIM1 y el agotamiento del almacenado de Orai1, Ca2+ conduce a la disociación de SARAF de STIM1 a los 30 segundos después del tratamiento con thapsigargin, paralelo al aumento de SARAF en la interacción con Orai1, seguido por reinteracción con STIM1 y la disociación desde Orai1. La expresión de SARAF y Orai1 o la supresión de diversos N-terminal de mutantes de Orai1 no altera la interacción de SARAF-Orai1; sin embargo, la expresión de eliminación de C-terminal y los mutantes de Orai1 bloquean la C-terminal de Orai1 y menoscaban la interacción con SARAF. Estas observaciones sugieren que SARAF ejerce un papel positivo inicial en la activación de SOCE seguida por la facilitación del SCDI de Orai1.Ca2+ influx by store-operated Ca2+ channels is a major mechanism for intracellular Ca2+ homeostasis and cellular function. Here we present evidence for the dynamic interaction between the SOCE associated regulatory factor (SARAF), STIM1 and Orai1. SARAF overexpression attenuated SOCE and the STIM1-Orai1 interaction in cells endogenously expressing STIM1 and Orai1 while RNAi-mediated SARAF silencing induced opposite effects. SARAF impaired the association between Orai1 and the Orai1-activating small fragment of STIM1 co-expressed in the STIM1-deficient NG115-401L cells. Cell treatment with thapsigargin or physiological agonists results in direct association of SARAF with Orai1. STIM1-independent interaction of SARAF with Orai1 leads to activation of this channel. In cells endogenously expressing STIM1 and Orai1, Ca2+ store depletion leads to dissociation of SARAF withSTIM1 approximately 30s after treatment with thapsigargin, which paralleled the increase in SARAFOrai1 interaction, followed by reinteraction with STIM1 and dissociation from Orai1. Co-expression of SARAF and either Orai1 or various N-terminal deletion Orai1 mutants did not alter SARAF-Orai1 interaction; however, expression of C-terminal deletion Orai1 mutants or blockade of the C-terminus of Orai1 impair the interaction with SARAF. These observations suggest that SARAF exerts an initial positive role in the activation of SOCE followed by the facilitation of SCDI of Orai1.• Ministerio de Economía y Competitividad. Becas BFU2013-45564-C2-1-P, BFU2013-45564-C2-2-P, BFU2011-24365 and RD12-0043-0016 (RETICEF) • Ministerio de Economía y Competitividad. Programa Juan de la Cierva para José Javier López Barba • Ministerio de Economía y Competitividad. Beca BES-2011-043356 para Letizia Albarrán Alonso • Junta de Extremadura y Fondos FEDERpeerReviewe

    Heart Failure Is a Poor Prognosis Risk Factor in Patients Undergoing Cholecystectomy: Results from a Spanish Data-Based Analysis

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    Background: The incidence of cholecystectomy is increasing as the result of the aging worldwide. Our aim was to determine the influence of heart failure on in-hospital outcomes in patients undergoing cholecystectomy in the Spanish National Health System (SNHS). Methods: We conducted a retrospective study using the Spanish National Hospital Discharge Database. Patients older than 17 years undergoing cholecystectomy in the period 2007–2015 were included. Demographic and administrative variables related to patients’ diseases as well as procedures were collected. Results: 478,111 episodes of cholecystectomy were identified according to the data from SNHS hospitals in the period evaluated. From all the episodes, 3357 (0.7%) were excluded, as the result the sample was represented by 474,754 episodes. Mean age was 58.3 (+16.5) years, and 287,734 (60.5%) were women (p < 0.001). A primary or secondary diagnosis of HF was identified in 4244 (0.89%) (p < 0.001) and mean age was 76.5 (+9.6) years. A higher incidence of all main complications studied was observed in the HF group (p < 0.001), except stroke (p = 0.753). Unadjusted in-hospital mortality was 1.1%, 12.9% in the group with HF versus 1% in the non HF group (p < 0.001). Average length of hospital stay was 5.4 (+8.9) days, and was higher in patients with HF (16.2 + 17.7 vs. 5.3 + 8.8; p < 0.001). Risk-adjusted in-hospital mortality models’ discrimination was high in both cases, with AUROC values = 0.963 (0.960–0.965) in the APRG-DRG model and AUROC = 0.965 (0.962–0.968) in the CMS adapted model. Median odds ratio (MOR) was high (1.538 and 1.533, respectively), stating an important variability of risk-adjusted outcomes among hospitals. Conclusions: The presence of HF during admission increases in hospital mortality and lengthens the hospital stay in patients undergoing cholecystectomy. However, mortality and hospital stay have significantly decreased during the study period in both groups (HF and non HF patients)

    Impact of Heart Failure on In-Hospital Outcomes after Surgical Femoral Neck Fracture Treatment

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    Background: Femoral neck fracture (FNF) is a common condition with a rising incidence, partly due to aging of the population. It is recommended that FNF should be treated at the earliest opportunity, during daytime hours, including weekends. However, early surgery shortens the available time for preoperative medical examination. Cardiac evaluation is critical for good surgical outcomes as most of these patients are older and frail with other comorbid conditions, such as heart failure. The aim of this study was to determine the impact of heart failure on in-hospital outcomes after surgical femoral neck fracture treatment. Methods: We performed a retrospective study using the Spanish National Hospital Discharge Database, 2007–2015. We included patients older than 64 years treated for reduction and internal fixation of FNF. Demographic characteristics of patients, as well as administrative variables, related to patient’s diseases and procedures performed during the episode were evaluated. Results: A total of 234,159 episodes with FNF reduction and internal fixation were identified from Spanish National Health System hospitals during the study period; 986 (0.42%) episodes were excluded, resulting in a final study population of 233,173 episodes. Mean age was 83.7 (±7) years and 179,949 (77.2%) were women (p < 0.001). In the sample, 13,417 (5.8%) episodes had a main or secondary diagnosis of heart failure (HF) (p < 0.001). HF patients had a mean age of 86.1 (±6.3) years, significantly older than the rest (p < 0.001). All the major complications studied showed a higher incidence in patients with HF (p < 0.001). Unadjusted in-hospital mortality was 4.1%, which was significantly higher in patients with HF (18.2%) compared to those without HF (3.3%) (p < 0.001). The average length of stay (LOS) was 11.9 (±9.1) and was also significantly higher in the group with HF (16.5 ± 13.1 vs. 11.6 ± 8.7; p < 0.001). Conclusions: Patients with HF undergoing FNF surgery have longer length of stay and higher rates of both major complications and mortality than those without HF. Although their average length of stay has decreased in the last few years, their mortality rate has remained unchanged

    Educación para el desarrollo en Castilla y León: cómo vemos el mundo

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    439 p.Quienes creemos que son necesarios cambios en el sistema económico, político y financiero mundial que permitan avanzar en el desarrollo humano sostenible de los pueblos, superando las injusticias y las brechas de desigualdad en el acceso a los recursos, siempre hemos considerado la educación como una pieza clave para conducir ese cambio, y a la universidad como un agente fundamental que puede y debe desarrollarla. Es difícil reflexionar sobre la “Educación para el Desarrollo” distanciándose de los acontecimientos que durante los últimos meses están ocurriendo en Europa y España. Estamos viendo y viviendo cómo la crisis financiera y económica es utilizada para justificar decisiones políticas que reducen nuestro nivel de bienestar. Es inevitable la comparación con los planes de ajuste estructural (PAE) que desde los años 80 se impusieron al dictado del FMI y el BM a los países empobrecidos como respuesta a la crisis de la Deuda Externa, así como sus nefastas consecuencias sociales y económicas para los pueblos afectado

    Association Between Preexisting Versus Newly Identified Atrial Fibrillation and Outcomes of Patients With Acute Pulmonary Embolism

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    Background Atrial fibrillation (AF) may exist before or occur early in the course of pulmonary embolism (PE). We determined the PE outcomes based on the presence and timing of AF. Methods and Results Using the data from a multicenter PE registry, we identified 3 groups: (1) those with preexisting AF, (2) patients with new AF within 2 days from acute PE (incident AF), and (3) patients without AF. We assessed the 90-day and 1-year risk of mortality and stroke in patients with AF, compared with those without AF (reference group). Among 16 497 patients with PE, 792 had preexisting AF. These patients had increased odds of 90-day all-cause (odds ratio [OR], 2.81; 95% CI, 2.33-3.38) and PE-related mortality (OR, 2.38; 95% CI, 1.37-4.14) and increased 1-year hazard for ischemic stroke (hazard ratio, 5.48; 95% CI, 3.10-9.69) compared with those without AF. After multivariable adjustment, preexisting AF was associated with significantly increased odds of all-cause mortality (OR, 1.91; 95% CI, 1.57-2.32) but not PE-related mortality (OR, 1.50; 95% CI, 0.85-2.66). Among 16 497 patients with PE, 445 developed new incident AF within 2 days of acute PE. Incident AF was associated with increased odds of 90-day all-cause (OR, 2.28; 95% CI, 1.75-2.97) and PE-related (OR, 3.64; 95% CI, 2.01-6.59) mortality but not stroke. Findings were similar in multivariable analyses. Conclusions In patients with acute symptomatic PE, both preexisting AF and incident AF predict adverse clinical outcomes. The type of adverse outcomes may differ depending on the timing of AF onset.info:eu-repo/semantics/publishedVersio

    Now, the part of intuition. Research, Art and Creation, 2018

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    Catálogo de Exposición del Máster en Investigación en Arte y Creación de la UCM. Muestra celebrada del 25 de septiembre al 10 de octubre de 2018 en la Sala de Exposiciones de la Facultad de Bellas Artes. C / Pintor el Greco 2, Ciudad Universitaria. 28040 Madrid. Comisariado de Javier Mañero Rodicio.Exhibition catalog of the Master in Art and Creation Research of the UCM. September 25 to October 10, 2018 in the Exhibition Hall of the Faculty of Fine Arts. C / Pintor El Greco 2, University City. 28040 Madrid. Curated by Javier Mañero Rodicio.Fac. de Bellas ArtesFALSEFacultad de Bellas Artes. Universidad Complutense de Madrid.pu

    Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

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    The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

    Derecho ex cathedra. 1847-1936 Diccionario de catedráticos españoles

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    Edición revisada 2020.Publicación de las entradas biográficas del Diccionario de catedráticos españoles de Derecho, accesible en http://www.uc3m.es/diccionariodecatedraticos. Al dar forma de libro al material hemos prescindido de algunos elementos informativos, que se mantienen en la página electrónica indicada. Se recogen ahora solamente a los ingresados en el cuerpo con anterioridad a la guerra civil.Publication of the biographical entries of the Diccionario de catedráticos españoles de Derecho, accessible at http://www.uc3m.es/diccionariodecatedraticos. By giving those material book form, we have dispensed with some informative elements, however kept on the web page. Only professors apointed prior to the Civil War are now included.Esta publicación forma parte del proyecto “La memoria del jurista español: génesis y desarrollo de las disciplinas jurídicas” (ref. DER2014-55035-C2-1-P/DER2014-55035-C2-2-P), financiado por el Ministerio de Economía, Industria y Competitividad (España)
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