Buscador

Encontrado(s) 2202151 resultado(s)
Encontrada(s) 220216 página(s)

The Transcriptional factor ZEB1 represses Syndecan 1 expression in prostate cancer

  • Farfán, Nancy
  • Ocarez, Nallatt
  • Castellón, Enrique A.
  • Mejía, Nilo
  • García de Herreros, Antonio
  • Contreras, Héctor R.
Syndecan 1 (SDC-1) is a cell surface proteoglycan with a significant role in cell adhesion, maintaining epithelial integrity. SDC1 expression is inversely related to aggressiveness in prostate cancer (PCa). During epithelial to mesenchymal transition (EMT), loss of epithelial markers is mediated by transcriptional repressors such as SNAIL, SLUG, or ZEB1/2 that bind to E-box promoter sequences of specific genes. The effect of these repressors on SDC-1 expression remains unknown. Here, we demonstrated that SNAIL, SLUG and ZEB1 expressions are increased in advanced PCa, contrarily to SDC-1. SNAIL, SLUG and ZEB1 also showed an inversion to SDC-1 in prostate cell lines. ZEB1, but not SNAIL or SLUG, represses SDC-1 as demonstrated by experiments of ectopic expression in epithelial prostate cell lines. Inversely, expression of ZEB1 shRNA in PCa cell line increased SDC-1 expression. The effect of ZEB1 is transcriptional since ectopic expression of this gene represses SDC-1 promoter activity and ZEB1 binds to the SDC-1 promoter as detected by ChIP assays. An epigenetic mark associated to transcription repression H3K27me3 was bound to the same sites that ZEB1. In conclusion, this study identifies ZEB1 as a key repressor of SDC-1 during PCa progression and point to ZEB1 as a potentially diagnostic marker for PCa., This work was supported by the following grants: FONDECYT N° 1110269 and 1151214 (HRC), FONDECYT N° 1140417 (EAC), Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional-FEDER (SAF2016-76461-R) (AGH). MECESUP scholarship, CONICYT scholarship N° 21140772 and the Scholarship for short residencies of the University of Chile (2014).
Proyecto:


Depressive mood ratings are reduced by MDMA in female polydrug ecstasy users homozygous for the l-allele of the serotonin transporter

  • Kuypers, Kim PC
  • Torre Fornell, Rafael de la
  • Farré, Magí
  • Xicota Vila, Laura, 1987-
  • de Sousa Fernandes Perna, E. B.
  • Theunissen, E. L.
  • Ramaekers, Johannes G.
MDMA exerts its main effects via the serotonergic system and the serotonin transporter. The gene coding for this transporter determines the expression rate of the transporter. Previously it was shown that healthy individuals with the short allelic variant (‘s-group’) of the 5-HTTLPR-polymorphism displayed more anxiety and negative mood, and had a lower transcriptional efficiency compared to individuals who are homozygous for the l-allele (‘l-group’). The present study aimed to investigate the role of the 5-HTTLPR polymorphism in MDMA-induced mood effects. Four placebo-controlled, within-subject studies were pooled, including in total 63 polydrug ecstasy users (Ns-group = 48; Nl-group = 15) receiving MDMA 75 mg and placebo on two test days, separated by minimally 7 days. Mood was assessed by means of the Profile of Mood States. Findings showed that MDMA induced –independent of sex- a positive mood state, and as a side effect also increased two negative affect states, anxiety and confusion. Anxiety ratings were higher in the l-group and independent of treatment or sex. Depression ratings were lowered by MDMA in the female l-group. Findings indicate that the MDMA-induced reduction in self-rated depressive feelings is sex- and genotype-dependent, with females homozygous for the l-allele showing this beneficial effect.
Proyecto:


Whole genome sequencing in the search for genes associated with the control of SIV infection in the Mauritian macaque model

  • de Manuel, Marc
  • Shiina, Takashi
  • Suzuki, Shingo
  • Dereuddre-Bosquet, Nathalie
  • Garchon, Henri-Jean
  • Tanaka, Masayuki
  • Congy-Jolivet, Nicolas
  • Aarnink, Alice
  • Le Grand, Roger
  • Marquès i Bonet, Tomàs, 1975-
  • Blancher, Antoine
In the Mauritian macaque experimentally inoculated with SIV, gene polymorphisms potentially associated with the plasma virus load at a set point, approximately 100 days post inoculation, were investigated. Among the 42 animals inoculated with 50 AID50 of the same strain of SIV, none of which received any preventive or curative treatment, nine individuals were selected: three with a plasma virus load (PVL) among the lowest, three with intermediate PVL values and three among the highest PVL values. The complete genomes of these nine animals were then analyzed. Initially, attention was focused on variants with a potential functional impact on protein encoding genes (non-synonymous SNPs (NS-SNPs) and splicing variants). Thus, 424 NS-SNPs possibly associated with PVL were detected. The 424 candidates SNPs were genotyped in these 42 SIV experimentally infected animals (including the nine animals subjected to whole genome sequencing). The genes containing variants most probably associated with PVL at a set time point are analyzed herein., This work was supported by the “Investissements d’Avenir” programs managed by the ANR under reference ANR-11-INBS-0008 funding the Infectious Disease Models and Innovative Therapies (IDMIT, Fontenay-aux-Roses, France) infrastructure, and ANR-10-EQPX-02-01 funding the FlowCyTech facility (IDMIT, Fontenay-aux-Roses, France). We warmly thank all members of ASW and L2I core lab facility from IDMIT center. TMB is supported by MINECO BFU2014-55090-P (FEDER), U01 MH106874 grant, Howard Hughes International Early Career, Obra Social “La Caixa” and Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement de la Generalitat de Catalunya.
Proyecto:


Considering saliency in a perception inspired gamut reduction algorithm

  • Vazquez-Corral, Javier
  • Zamir, Syed Waqas
  • Bertalmío, Marcelo
Comunicació presentada al congrés CIC22, Color and Imaging Conference celebrat a Boston, Massachusetts, del 3 al 7 de novembre de 2014., Gamut reduction transforms the colors of an input image within the range of a target device. A good gamut reduction algorithm will preserve the experience felt by the viewer of the original image. Saliency algorithms predict the image regions where an observer first focuses. Therefore, there exists a connection between both concepts since modifying the saliency of the image will modify the viewer’s experience. However, very little attention has been given to relate saliency and gamut mapping. In this paper we propose to modify a recent gamut reduction algorithm proposed by Zamir et al. [32] in order to better respect the saliency of the original image in the reproduced one. Our results show that the proposed approach presents a gamut-mapped image whose saliency map is closer to that of the original image with a minor loss in the accuracy of perceptual reproduction.
Proyecto:


Estudi i anàlisi de la cultura de la ciberseguretat dins la Policia de la Generalitat-Mossos d'Esquadra: reptes actuals i futurs

  • Tortellà i Muns, Marc
La cultura en ciberseguretat és un concepte relativament nou de no fa més d’una dècada. Arran de l’aparició de normativa en referència a les obligacions de les administracions envers la seguretat digital en les seves infraestructures i l’aplicació de la protecció de dades envers el servei que es dona al ciutadà tant en l’àmbit públic com el privat, així com la creació d’estructures estatals per enfortir l’administració pública enfront els nous reptes digitals, ha fet que les organitzacions d’arreu de l’estat, on s’inclouen el cos dels Mossos d’Esquadra, hagin fet un esforç per situar-se dins uns alts nivells de competència per, d’una banda protegir les seves infraestructures i les dades amb informació sensible que gestionen i d’altra banda enfortir la resiliència de l’organització envers un ciberatac dirigit. Aquest nou escenari d’operacions on les ciberamenaces i la criminalitat mitjançant el món virtual creixen exponencialment any rere any, ha fet que dins la policia catalana es creï una cultura de ciberseguretat pròpia. Per tal d’estudiar-la, s’ha analitzat el context professional on es fa necessària la creació, la normativa que li aplica des d’una vessant pràctica, com es genera, quin elements la conformen, cap a on està orientada, quina conscienciació crea i quines perspectives estratègiques de futur té per mantenir-la. Alhora també s’ha analitzat i comparat sota el prisma dels tres nivells de cultura organitzacional que defineix l’autor Edgar Schein i mitjançant un qüestionari s’ha determinat si la cultura en ciberseguretat ha arrelat a la organització i si s’ha adequat a les premisses i nivells que assenyala l’autor., The culture in cybersecurity is a relatively new concept, existing for less than a decade. Following the appearance of regulations, in reference to the obligations of the administrations towards digital security in their infrastructures and the application of the protection of data regarding the service, that is given to citizens both in the public and private fields, the creation of state structures to strengthen the public administration against the new digital challenges have made organizations from all over the state, which include catalan police-Mossos d'Esquadra, make an effort to situate at high levels of competition to, on the one hand, protect their infrastructures and data with sensitive information that they manage and on the other hand strengthen the resilience of the organization towards a targeted cyber attack. This new stage of operations where cyber threats and criminality through the virtual world grow exponentially year after year has led to the creation of a culture of cybersecurity within the catalan police. In order to study it, the professional context where creations is necessary has been analyzed where we, the regulators who apply it from a practical point of view, how it is generated, what elements become part of, where it is oriented, what kind of awareness is created and what future strategic perspectives have to keep it. At the same time, it has also been analyzed and compared under the prism of the three levels of organizational culture defined by author Edgar Schein. Through a questionnaire, it has also been determined whether the culture in cybersecurity has rooted in the organization, and whether it has been adapted to premises and levels that the author mentioned.
Proyecto:


Visualizing punctuation restoration in speech transcripts with prosograph

  • Öktem, Alp
  • Farrús, Mireia
  • Bonafonte, Antonio
Comunicació presentada a: Interspeech 2018, celebrat del 2 al 6 de setembre de 2018 a Hyderabad, Índia., We have developed a neural architecture that tests the effect of lexical, morphosyntactic and prosodic features in restoring punctuation in speech transcriptions. Having outperformed a baseline model in terms of precision and recall, we further extend our performance tests by attaching it in a speech recognition pipeline. The visual and interactive testing environment that we prepared helps us observe how our models generalizes in unseen data and also plan our next steps for improvement., The first author has received Maria de Maeztu Reproducibility Award from Department of Information and Communication Technologies of Universitat Pompeu Fabra in 2018 through presentation of this work. The second author is funded by the Spanish Ministry of Economy, Industry and Competitiveness through the Ram´on y Cajal program.
Proyecto:


El silenci d'Agustí Pisaca

  • Barberà Miró, Júlia
Treball de fi de grau d'Humanitats. Curs 2017-2018, Director: Antonio Monegal, Agustí Pisaca i Pujadas (1850-1918) va ser un fotògraf amateur barceloní de principis de segle. Seguint els passos del seu pare, va interessar-se per la fotografia artística i es va convertir, així, en un dels fundadors i impulsors del pictorialisme català gràcies a la seva exposició pionera a la Sala Parés l’abril de 1905. La seva producció fotogràfica la localitzem durant els primers quinze anys de segle XX en la que va arribar a ser conegut com un ferm defensor de la tècnica de la goma bicromatada.
Proyecto:


Eric Blair nació en India. George Orwell nació en Birmania: la posición de Orwell en relación a su experiencia del imperialismo británico

  • Añaños Hernández, Carolina
Treball de fi de grau d'Humanitats. Curs 2017-2018, Director: Miquel Berga
Proyecto:


Business plan: the creation of an inclusive hostel

  • Calafell Albó, Blanca
  • Fernández Blanco, Iris
The purpose behind this Bachelor Thesis is the creation of a new and, most important, inclusive touristic concept build upon the needs, capacities and expectations of people with intellectual disabilities. A project specially conceived and customized for the most vulnerable segment of the labour market, and where the main focus is set on creating an appealing working environment where people with disabilities are perceived as the main core of the organization. The objective of this Bachelor Thesis is to develop an inclusive lodging model that, being feasible and profitable, allows the creation of labour opportunities for a collective traditionally excluded and marginalized from the employment market. In order to develop a framework for disabled people, a business plan will be created having in mind the principles that well define a social economy and the overall structure will be conceived with a common goal: the welfare and integration of people with intellectual disabilities. The elaboration of this business plan will lead to the creation of a hostel in which part of the labour force will be constituted by people with intellectual disabilities. This is, consequently, a new inclusive tourism concept where the employees, and their respective capacities and abilities, represent the core essence of the organization. The overall corporate structure within the lodging will be built upon the capabilities and talents of a diverse and interdisciplinary group of people coordinated to achieve a common objective: providing accommodation to guests.
Proyecto:


Grandes errores en la prensa política española en el año 2012: de la gloria al ridículo en veinticuatro horas, Grans errades en la premsa política espanyola l’any 2012: de la glòria al ridícul en vint-i-quatre hores, Big mistakes in the Spanish political press in 2012: from glory to ridicule in 24 hours

  • Lamelas, Marcos
A menudo lo que la prensa de calidad ofrece a sus lectores como una exclusiva acaba siendo un error. Este trabajo analiza los grandes desaciertos que publicaron los cinco mayores diarios de España en el año 2012 en sus secciones de política. La reacción de los principales rotativos ante estas equivocaciones refleja tanto la crisis de credibilidad que sufren los grandes medios como el relativismo con el que se aplican los códigos deontológicos de los que disponen estas cabeceras. También, que la verdadera detección de estos fallos no va a llevar a la rectificación del propio medio sino, la mayoría de las veces, a la réplica de los competidores o a como los perpetradores del desaguisado optan por dejar sin continuidad posterior unos temas que, de haber sido verdaderas exclusivas, hubiesen tenido un mayor recorrido mediático en días posteriores., Sovint el que la premsa de qualitat ofereix als seus lectors com una exclusiva acaba sent una errada. Aquest treball analitza els grans desencerts que van publicar els cinc primers diaris d’Espanya l’any 2012 a les seves seccions de política. La reacció dels principals rotatius davant d’aquestes equivocacions reflecteix tant la crisi de credibilitat que pateixen els grans mitjans com el relativisme amb què s’apliquen els codis deontològics de què disposen aquestes capçaleres. També, que la veritable detecció d’aquestes pífies no portarà a la rectificació del mateix mitjà sinó, la majoria de les vegades, a la rèplica dels competidors o a com els perpetradors del desgavell opten per deixar sense continuïtat posterior uns temes que, si haguessin estat veritables exclusives, haurien tingut un major recorregut mediàtic en els dies següents., Often what the quality press offers to its readers as a scoop ends up being a mistake. This paper analyzes the major errors published in the politics sections of the five main Spanish newspapers in 2012. The reaction of these newspapers to mistakes reflects as much the credibility crisis of the mainstream media as the relativism with which the ethical codes of these papers are implemented. It reflects also that the real detection of these errors will not lead to the rectification of the newspaper itself but, most of the time, to the reply of competitors or even to the subsequent silence of the authors of the mess with respect to issues which, had they been real scoops, would have had major media coverage over the following days.
Proyecto:


Buscador avanzado