182 research outputs found

    Imagen y simbología del poder en la dramaturgia de Álvaro Cubillo de Aragón

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    Para la cartelera teatral de los Autos Sacramentales de Calderón en el siglo XVIII

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    La presencia del teatro calderoniano en el siglo XVIII queda demostrada a través de diferentes carteleras teatrales, especialmente durante la primera mitad del siglo y, particularmente, cuando hablamos sobre las representaciones de los autos sacramentales. El presente artículo acomete un análisis detallado y sistemático sobre el género sacramental en las carteleras teatrales. Proporciona información, a través de diferentes fuentes documentales, sobre algunos de los más importantes teatros de toda la península ibérica. De este modo, este estudio nos permite comprender mejor las preferencias del público durante el siglo XVIII hasta su prohibición en 1765.The presence of Calderonian theatre in the 18th century is verified through the different theatre programmes, especially during the first half of the century, and, particularly, when we talk about autos sacramentales performances. The present article undertakes a detailed and systematic analysis about the sacramental genre in the theatre programmes. It provides information, through different sources, about some of the most important theatres all over the Iberian Peninsula. In this way, this study allows us to obtain a better understanding of the audience preferences during the 18th century until its prohibition in 1765

    La comicidad de un enredo: “Con quien vengo, vengo”, de Calderón de la Barca

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    Con quien vengo, vengo es una de las comedias de Calderón que ha pasado prácticamente desapercibida para la crítica. Se trata de una comedia de enredo amoroso desarrollado en un argumento de equívocos, cambios de identidades, disfraces, nocturnidad. El presente artículo analiza los diferentes recursos que emplea el dramaturgo para producir la comicidad y su funcionalidad en el desarrollo argumental. Además, se somete a análisis el papel del personaje gracioso, sus rasgos característicos en la comedia y los diversos medios expresivos de que se vale como agente cómico.Con quien vengo, vengo is one of Calderon’s comedies practically unnoticed by critics. It is an urban love comedy developing in a plot where misunderstandings, identity changes, disguises, and the nocturnal are present. In this article, different resources used by the playwright to create a comedy and its functionality in the thematic thread are reviewed. Furthermore, the role of the gracioso character, his distinctive features and different linguistic resources are analysed

    Sigma-2 receptor agonist derivatives of 1-Cyclohexyl-4-[3-(5-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)propyl]piperazine (PB28) induce cell death via mitochondrial superoxide production and caspase activation in pancreatic cancer

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    Abstract Background Despite considerable efforts by scientific research, pancreatic cancer is the fourth leading cause of cancer related mortalities. Sigma-2 receptors, which are overexpressed in several tumors, represent promising targets for triggering selective pancreatic cancer cells death. Methods We selected five differently structured high-affinity sigma-2 ligands (PB28, PB183, PB221, F281 and PB282) to study how they affect the viability of diverse pancreatic cancer cells (human cell lines BxPC3, AsPC1, Mia PaCa-2, and Panc1 and mouse Panc-02, KCKO and KP-02) and how this is reflected in vivo in a tumor model. Results Important cytotoxicity was shown by the compounds in the aggressive Panc02 cells, where cytotoxic activity was caspase-3 independent for four of the five compounds. However, both cytotoxicity and caspase-3 activation involved generation of Reactive Oxygen Species (ROS), which could be partially reverted by the lipid antioxidant \u3b1-tocopherol, but not by the hydrophilic N-acetylcysteine (NAC) indicating crucial differences in the intracellular sites exposed to oxidative stress induced by sigma-2 receptor ligands. Importantly, all the compounds strongly increased the production of mitochondrial superoxide radicals except for PB282. Despite a poor match between in vitro and the in vivo efficacy, daily treatment of C57BL/6 mice bearing Panc02 tumors resulted in promising effects with PB28 and PB282 which were similar compared to the current standard-of-care chemotherapeutic gemcitabine without showing signs of systemic toxicities. Conclusions Overall, this study identified differential sensitivities of pancreatic cancer cells to structurally diverse sigma-2 receptor ligands. Of note, we identified the mitochondrial superoxide pathway as a previously unrecognized sigma-2 receptor-activated process, which encourages further studies on sigma-2 ligand-mediated cancer cell death for the targeted treatment of pancreatic tumors

    Management of patients with vulvovaginal atrophy and cytological abnormalities

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    The data on managing patients with vulvovaginal atrophy and abnormal cytological results are provided for obstetrician-gynecologists

    Microscopy-BIDS: An extension to the brain imaging data structure for microscopy data

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    The Brain Imaging Data Structure (BIDS) is a specification for organizing, sharing, and archiving neuroimaging data and metadata in a reusable way. First developed for magnetic resonance imaging (MRI) datasets, the community-led specification evolved rapidly to include other modalities such as magnetoencephalography, positron emission tomography, and quantitative MRI (qMRI). In this work, we present an extension to BIDS for microscopy imaging data, along with example datasets. Microscopy-BIDS supports common imaging methods, including 2D/3D, ex/in vivo, micro-CT, and optical and electron microscopy. Microscopy-BIDS also includes comprehensible metadata definitions for hardware, image acquisition, and sample properties. This extension will facilitate future harmonization efforts in the context of multi-modal, multi-scale imaging such as the characterization of tissue microstructure with qMRI

    Sigma-2 Receptor Ligand Binding Modulates Association between TSPO and TMEM97

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    Sigma-2 receptor (S2R) is a S2R ligand-binding site historically associated with reportedly 21.5 kDa proteins that have been linked to several diseases, such as cancer, Alzheimer's disease, and schizophrenia. The S2R is highly expressed in various tumors, where it correlates with the proliferative status of the malignant cells. Recently, S2R was reported to be the transmembrane protein TMEM97. Prior to that, we had been investigating the translocator protein (TSPO) as a potential 21.5 kDa S2R candidate protein with reported heme and sterol associations. Here, we investigate the contributions of TMEM97 and TSPO to S2R activity in MCF7 breast adenocarcinoma and MIA PaCa-2 (MP) pancreatic carcinoma cells. Additionally, the role of the reported S2R-interacting partner PGRMC1 was also elucidated. Proximity ligation assays and co-immunoprecipitation show a functional association between S2R and TSPO. Moreover, a close physical colocalization of TMEM97 and TSPO was found in MP cells. In MCF7 cells, co-immunoprecipitation only occurred with TMEM97 but not with PGRMC1, which was further confirmed by confocal microscopy experiments. Treatment with the TMEM97 ligand 20-(S)-hydroxycholesterol reduced co-immunoprecipitation of both TMEM97 and PGRMC1 in immune pellets of immunoprecipitated TSPO in MP cells. To the best of our knowledge, this is the first suggestion of a (functional) interaction between TSPO and TMEM97 that can be affected by S2R ligands

    Impaired Mitophagy and Protein Acetylation Levels in Fibroblasts from Parkinson's Disease Patients

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    Parkinson's disease (PD) is a chronic and progressive neurodegenerative disorder. While most PD cases are idiopathic, the known genetic causes of PD are useful to understand common disease mechanisms. Recent data suggests that autophagy is regulated by protein acetylation mediated by histone acetyltransferase (HAT) and histone deacetylase (HDAC) activities. The changes in histone acetylation reported to be involved in PD pathogenesis have prompted this investigation of protein acetylation and HAT and HDAC activities in both idiopathic PD and G2019S leucine-rich repeat kinase 2 (LRRK2) cell cultures. Fibroblasts from PD patients (with or without the G2019S LRRK2 mutation) and control subjects were used to assess the different phenotypes between idiopathic and genetic PD. G2019S LRRK2 mutation displays increased mitophagy due to the activation of class III HDACs whereas idiopathic PD exhibits downregulation of clearance of defective mitochondria. This reduction of mitophagy is accompanied by more reactive oxygen species (ROS). In parallel, the acetylation protein levels of idiopathic and genetic individuals are different due to an upregulation in class I and II HDACs. Despite this upregulation, the total HDAC activity is decreased in idiopathic PD and the total HAT activity does not significantly vary. Mitophagy upregulation is beneficial for reducing the ROS-induced harm in genetic PD. The defective mitophagy in idiopathic PD is inherent to the decrease in class III HDACs. Thus, there is an imbalance between total HATs and HDACs activities in idiopathic PD, which increases cell death. The inhibition of HATs in idiopathic PD cells displays a cytoprotective effect
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