1,455 results on '"Hervás P"'
Search Results
52. 20907. MANEJO DE ANEURISMAS INTRACRANEALES NO ROTOS: RESULTADOS DE 10 AÑOS EXPERIENCIA DE UN COMITÉ MULTIDISCIPLINAR
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P. López-Grueiro Valcarce, L. Pulido Fraiz, C. Hervás Testal, M. Alonso de Leciñana Cases, B. Fuentes Gimeno, G. Ruiz Ares, A. Fernández Prieto, B. Martín Aguilera, R. Frutos Martínez, P. Navia Álvarez, A. Álvarez Muelas, Á. Gómez de la Riva, B. Hernández García, R. Rigual Bobillo, E. de Celis Ruiz, L. Casado Fernández, L. González Martín, J. Rodríguez Pardo de Donlebún, and A. Barrios López
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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53. 20214. IMPACTO DEL NIVEL SOCIOECONÓMICO EN LA SUPERVIVENCIA DE PACIENTES CON ELA
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J. Vázquez Costa, I. Gómez Hernández, M. Soler, P. García Casanova, and D. Hervás
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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54. 20517. INFARTO CEREBRAL TRAS IMPLANTACIÓN DE VÁLVULA AÓRTICA TRANSCATÉTER (TAVI): ANÁLISIS RETROSPECTIVO DE FACTORES DE RIESGO, CARACTERÍSTICAS CLÍNICAS Y PRONÓSTICO
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E. Mariño Trillo, A. Adán Gurpegui, Ó. Camejo Más, S. García Roldan, G. Galeote García, G. Ruiz Ares, C. Hervás Testal, E. de Celis Ruiz, A. Jurado Román, S. Jiménez Valero, R. Moreno Gómez, B. Fuentes Gimeno, and R. Rigual Bobillo
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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55. 20122. IMPLICACIÓN DE LA CAPACIDAD ANTIOXIDANTE EN PACIENTES CON EM DE BUENA EVOLUCIÓN CLÍNICA
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A. Gil Sánchez, H. Gonzalo Benito, L. Nogueras Penabad, M. Canuedes Solans, C. González Mingot, J. Hervás García, P. Valcheva, M. Solana Moga, S. Peralta Moncusí, A. Sancho Saldaña, P. Torres Cabestany, L. Quibus Requena, J. Serrano Casasola, and L. Brieva Ruiz
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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56. 21639. PERFIL DE CITOCINAS ASOCIADOS CON PERSISTENCIA DE SEROPOSITIVIDAD PARA SARS-COV-2 A LOS 6 MESES EN PACIENTES CON ESCLEROSIS MÚLTIPLE E INFECCIÓN POR COVID-19
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A. Sancho Saldaña, A. Gil Sánchez, B. Quirant Sánchez, S. Peralta, M. Solana, C. González Mingot, L. Quibus, E. Martínez Cáceres, P. Torres, J. Hervás, M. Canudes, and L. Brieva
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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57. 20733. HISTORIA NATURAL DE PACIENTES CON ATROFIA MUSCULAR ESPINAL CON 3 Y 4 COPIAS DEL GEN SMN2. DATOS DEL REGISTRO NACIONAL ESPAÑOL (CUIDAME)
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L. Puig Cruz, K. Aragón Gawinska, M. Fernández García, A. Nacimiento Osorio, C. Paradas, J. Sotoca, M. Povedano, A. Moreno Escribano, M. Henao, C. Gil Polo, R. Rojas García, M. Gómez Caravaca, M. Grimalt, R. Fernández Torron, I. Jericó, Ó. García Campos, L. Toledo Bravo de Laguna, D. Hervás, E. Tizzano, and J. Vázquez Costa
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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58. The proteomic signature of circulating extracellular vesicles following intracerebral hemorrhage: Novel insights into mechanisms underlying recovery
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Laura Casado-Fernández, Fernando Laso-García, Dolores Piniella, Mari Carmen Gómez-de Frutos, Laura Otero-Ortega, Susana-Belén Bravo, Blanca Fuentes-Gimeno, Félix Docando, Elisa Alonso-López, Gerardo Ruiz-Ares, Jorge Rodríguez-Pardo, Ricardo Rigual, Elena de Celis-Ruiz, Carlos Hervás, Exuperio Díez-Tejedor, María Gutiérrez-Fernández, and María Alonso de Leciñana
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Intracerebral hemorrhage ,Extracellular vesicles ,Proteomics ,Pathophysiology ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Circulating extracellular vesicles (EVs) can participate in innate repair processes triggered after intracerebral hemorrhage (ICH). We aimed to describe changes in the proteomic profile of circulating EVs between the acute and subacute phases of ICH and to compare the findings depending on outcomes, as an approach to unraveling such repair mechanisms.This was a prospective observational study including patients with non-traumatic supratentorial ICH. Exclusion criteria were previous disability, signs of herniation on baseline computed tomography, or limited life expectancy. EVs were isolated from blood samples at 24 h and 7 days after symptom onset. After 6-months' follow-up, patients were dichotomized into poor and good outcomes, defining good as an improvement of >10 points or > 50 % on the National Institutes of Health Stroke Scale and a modified Rankin Scale of 0–2. The protein cargo was analyzed by quantitative mass spectrometry and compared according to outcomes.Forty-four patients completed follow-up, 16 (35.5 %) having good outcomes. We identified 1321 proteins in EVs, 37 with differential abundance. In patients with good outcomes, proteins related to stress response (DERA, VNN2, TOMM34) and angiogenesis (RHG01) had increased abundance at 7 days. EVs from patients with poor outcomes showed higher levels of acute-phase reactants (CRP, SAA2) at 7 days compared with 24 h.In conclusion, the protein content of circulating EVs in patients with ICH changes over time, the changes varying depending on the clinical outcome, with greater abundance of proteins potentially involved in the repair processes of patients with good outcomes.
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- 2024
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59. Neutrinoless Double Beta Decay
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Adams, C., Alfonso, K., Andreoiu, C., Angelico, E., Arnquist, I. J., Asaadi, J. A. A., Avignone, F. T., Axani, S. N., Barabash, A. S., Barbeau, P. S., Baudis, L., Bellini, F., Beretta, M., Bhatta, T., Biancacci, V., Biassoni, M., Bossio, E., Breur, P. A., Brodsky, J. P., Brofferio, C., Brown, E., Brugnera, R., Brunner, T., Burlac, N., Caden, E., Calgaro, S., Cao, G. F., Cao, L., Capelli, C., Cardani, L., Fernandez, R. Castillo, Cattadori, C. M., Chana, B., Chernyak, D., Christofferson, C. D., Chu, P. -H., Church, E., Cirigliano, V., Collister, R., Comellato, T., Dalmasson, J., D'Andrea, V., Daniels, T., Darroch, L., Decowski, M. P., Demarteau, M., Peixoto, S. De Meireles, Detwiler, J. A., DeVoe, R. G., Di Domizio, S., Di Marco, N., di Vacri, M. L., Dolinski, M. J., Efremenko, Yu., Elbeltagi, M., Elliott, S. R., Engel, J., Fabris, L., Fairbank, W. M., Farine, J., Febbraro, M., Figueroa-Feliciano, E., Fields, D. E., Formaggio, J. A., Foust, B. T., Franke, B., Fu, Y., Fujikawa, B. K., Gallacher, D., Gallina, G., Garfagnini, A., Gingras, C., Gironi, L., Giuliani, A., Gold, M., Gornea, R., Grant, C., Gratta, G., Green, M. P., Grinyer, G. F., Gruszko, J., Guan, Y., Guinn, I. S., Guiseppe, V. E., Gutierrez, T. D., Hansen, E. V., Hardy, C. A., Hauptman, J., Heffner, M., Heeger, K. M., Henning, R., Hergert, H., Aguilar, D. Hervas, Hodak, R., Holt, J. D., Hoppe, E. W., Horoi, M., Huang, H. Z., Inoue, K., Jamil, A., Jochum, J., Jones, B. J. P., Kaizer, J., Karapetrov, G., Kharusi, S. Al, Kidd, M. F., Kishimoto, Y., Klein, J. R., Kolomensky, Yu. G., Kontul, I., Kornoukhov, V. N., Krause, P., Krucken, R., Kumar, K. S., Lang, K., Leach, K. G., Lenardo, B. G., Leonhardt, A., Li, A., Li, G., Li, Z., Licciardi, C., Lindsay, R., Lippi, I., Liu, J., Macko, M., MacLellan, R., Macolino, C., Majidi, S., Mamedov, F., Masbou, J., Massarczyk, R., Mastbaum, A. T., Mayer, D., Mazumdar, A., Mei, D. M., Mei, Y., Meijer, S. J., Mereghetti, E., Mertens, S., Mistry, K., Mitsui, T., Moore, D. C., Morella, M., Nattress, J. T., Neuberger, M., Ngwadla, X. E., Nones, C., Novosad, V., Nygren, D. R., Ondze, J. C. Nzobadila, O'Donnell, T., Gann, G. D. Orebi, Orrell, J. L., Ortega, G. S., Ouellet, J. L., Overman, C., Pagani, L., Palusova, V., Para, A., Pavan, M., Perna, A., Pertoldi, L., Pettus, W., Piepke, A., Piseri, P., Pocar, A., Povinec, P., Psihas, F., Pullia, A., Radford, D. C., Ramonnye, G. J, Rasiwala, H., Redchuk, M., Riboldi, S., Richardson, G., Rielage, K., Rogers, L., Rowson, P. C., Rukhadze, E., Saakyan, R., Sada, C., Salamanna, G., Salamida, F., Saldanha, R., Salvat, D. J., Sangiorgio, S., Schaper, D. C., Schoenert, S., Schwarz, M., Schwartz, S. E., Shitov, Y., Simkovic, F., Singh, V., Slavickova, M., Sousa, A. C., Spadoni, F. L., Speller, D. H., Stekl, I., Sumathi, R. R., Surukuchi, P. T., Tayloe, R., Tornow, W., Torres, J. A., Totev, T. I., Triambak, S., Tyuka, O. A., Vasilyev, S. I., Velazquez, M., Viel, S., Vogl, C., von Strum, K., Wang, Q., Waters, D., Watkins, S. L., Watts, M., Wei, W. -Z., Welliver, B., Wen, Liangjian, Wichoski, U., Wilde, S., Wilkerson, J. F., Winslow, L., Wiseman, C., Wu, X., Xu, W., Yang, H., Yang, L., Yu, C. H., Zeman, J., Zennamo, J., and Zuzel, G.
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Nuclear Experiment ,Nuclear Theory - Abstract
This White Paper, prepared for the Fundamental Symmetries, Neutrons, and Neutrinos Town Meeting related to the 2023 Nuclear Physics Long Range Plan, makes the case for double beta decay as a critical component of the future nuclear physics program. The major experimental collaborations and many theorists have endorsed this white paper., Comment: white paper submitted for the Fundamental Symmetries, Neutrons, and Neutrinos Town Meeting in support of the US Nuclear Physics Long Range Planning Process
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- 2022
60. Temperature Dependence of the Electron-Drift Anisotropy and Implications for the Electron-Drift Model
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Abt, Iris, Gooch, Chris, Hagemann, Felix, Hauertmann, Lukas, Aguilar, David Hervas, Liu, Xiang, Schulz, Oliver, Schuster, Martin, and Zsigmond, Anna Julia
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Physics - Instrumentation and Detectors ,Nuclear Experiment - Abstract
The electron drift in germanium detectors is modeled making many assumptions. Confronted with data, these assumptions have to be revisited. The temperature dependence of the drift of electrons was studied in detail for an n-type segmented point-contact germanium detector. The detector was mounted in a temperature controlled, electrically cooled cryostat. Surface events were induced with collimated 81 keV photons from a $^{133}$Ba source. A detailed analysis of the rise time of pulses collected in surface scans, performed at different temperatures, is presented. The longitudinal anisotropy of the electron drift decreases with rising temperature. A new approach, making use of designated rise-time windows determined by simulations using SolidStateDetectors.jl, was used to isolate the longitudinal drift of electrons along different axes to quantify this observation. The measured temperature dependence of the longitudinal drift velocities combined with the standard electron drift model as widely used in relevant simulation packages results in unphysical predictions. A first suggestion to modify the electron-drift model is motivated and described. The results of a first implementation of the modified model in SolidStateDetectors.jl are shown. They describe the data reasonably well. A general review of the model and the standard input values for mobilities is suggested.
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- 2022
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61. Distributed mobile CEP for collaborative social computing
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Pérez-Vereda, Alejandro, Canal, Carlos, and Hervás, Ramón
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- 2024
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62. Influence of meteorological variables on the frequency of visits and hospital admission for epistaxis in a city with a cold semi-arid climate (Lorca, Spain)
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Gómez-Hervás, Javier and Merino-Galvez, Esteban
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- 2024
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63. Urinary excretion of calcium, phosphate, magnesium, and uric acid in healthy infants and young children. Influence of feeding practices in early infancy
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Peris Vidal, Amelia, Ferrando Monleón, Susana, Marín Serra, Juan, Quiñones-Torrelo, Carmen, Hervás Andrés, Aurelio, Fons Moreno, Jaime, and Hernández Marco, Roberto
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- 2024
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64. Spectroscopical Analysis of Andean Plant Species with Anti-inflammatory, Antioxidant, and Antibacterial Activities
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Apaza Ticona, Luis, Hervás Povo, Belén, and Rumbero Sánchez, Ángel
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- 2024
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65. Global trends of pyrolysis research: a bibliometric analysis
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Márquez, Alejandro, Ortiz, Isabel, Sánchez-Hervás, José María, Monte, María Concepción, Negro, Carlos, and Blanco, Ángeles
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- 2024
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66. Effectiveness and Safety of Teriflunomide in Relapsing–Remitting Multiple Sclerosis and Improvements in Quality of Life: Results from the Real-World TERICARE Study
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Meca-Lallana, José E., Prieto González, José M., Caminero Rodríguez, Ana B., Olascoaga Urtaza, Javier, Alonso, Ana M., Durán Ferreras, Eduardo, Espinosa, Raúl, Dotor, Julio, Romera, Mercedes, Ares Luque, Adrián, Pérez Ruiz, Domingo, Calles, Carmen, Hernández, Miguel A., Hervás García, Miguel, Mendoza Rodríguez, Amelia, Berdei Montero, Yasmina, Téllez, Nieves, Herrera Varó, Nicolás, Sotoca, Javier, Presas-Rodríguez, Silvia, Querol Gutierrez, Luis A., Hervás Pujol, Mariona, Batlle Nadal, Jordi, Martín Ozaeta, Gisela, Gubieras Lillo, Laura, Martínez Yélamos, Sergio, Ramió-Torrentà, Lluís, Mallada Frechin, Javier, Belenguer Benavides, Antonio, Gascón-Giménez, Francisco, Casanova, Bonaventura, Landete Pascual, Lamberto, Berenguer, Leticia, Navarro, Laura, Gómez Gutierrez, Montserrat, Durán, Carmen, Rodríguez Regal, Ana, Álvarez, Elena, García-Estévez, Daniel A., López Real, Ana M., Llaneza González, Miguel A., Marzo Sola, María E., Sánchez-Menoyo, José L., Oterino, Agustín, Villaverde González, Ramón, Castillo-Triviño, Tamara, Álvarez de Arcaya, Amaya, and Llarena, Cristina
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- 2023
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67. Uncovering Differences: A Study on Loyalty in Esports Mobile Apps by Gender
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Amor Jaime SC, Alguacil Mario, Crespo-Hervás Josep, and Calabuig Ferran
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esports ,gender equality ,branding ,consumer behaviour ,sport management ,Sports ,GV557-1198.995 - Abstract
The aim of this research is to assess the existence or absence of differences in brand perceptions of users of an esports mobile app according to gender. In addition, it intends to discover the explanatory capacity of brand variables for the prediction of user loyalty, to understand how these variables influence perceptions according to gender, and to contribute to the creation of strategies more aligned with the interests and needs of each target audience.
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- 2024
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68. New mitogenomes of Runcinidae and Facelinidae: two understudied heterobranch families (Mollusca: Gastropoda)
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Carles Galià-Camps, Ana Karla Araujo, Leila Carmona, María del Rosario Martín-Hervás, Marta Pola, Ferran Palero, and Juan Lucas Cervera
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Mitochondrial genome ,phylogenomics ,neglected taxa ,type taxon ,systematics ,GC content ,Genetics ,QH426-470 - Abstract
Here, we present the mitochondrial sequences of two sea slugs (Heterobranchia): Runcina aurata and Facelina auriculata, the latter being the type species of the family. The mitochondrial genomes are 14,282 and 14,171bp in length, respectively, with a complete set of 13 PCGs, 2 rRNAs, and 22 tRNAs. None of the mitogenomes show gene reorganization, keeping the standard mitogenomic structure of Heterobranchia. Nucleotide composition differs significantly between them, with R. aurata showing the most AT-rich mitogenome (25.7% GC content) reported to date in Heterobranchia, and F. auriculata showing a rich GC content (35%) compared with other heterobranch mitochondrial genomes.
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- 2024
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69. Equivalence of variance components between standard and recursive genetic models using LDL′ transformations
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Luis Varona, David López-Carbonell, Houssemeddine Srihi, Carlos Hervás-Rivero, Óscar González-Recio, and Juan Altarriba
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Animal culture ,SF1-1100 ,Genetics ,QH426-470 - Abstract
Abstract Background Recursive models are a category of structural equation models that propose a causal relationship between traits. These models are more parameterized than multiple trait models, and they require imposing restrictions on the parameter space to ensure statistical identification. Nevertheless, in certain situations, the likelihood of recursive models and multiple trait models are equivalent. Consequently, the estimates of variance components derived from the multiple trait mixed model can be converted into estimates under several recursive models through LDL′ or block-LDL′ transformations. Results The procedure was employed on a dataset comprising five traits (birth weight—BW, weight at 90 days—W90, weight at 210 days—W210, cold carcass weight—CCW and conformation—CON) from the Pirenaica beef cattle breed. These phenotypic records were unequally distributed among 149,029 individuals and had a high percentage of missing data. The pedigree used consisted of 343,753 individuals. A Bayesian approach involving a multiple-trait mixed model was applied using a Gibbs sampler. The variance components obtained at each iteration of the Gibbs sampler were subsequently used to estimate the variance components within three distinct recursive models. Conclusions The LDL′ or block-LDL′ transformations applied to the variance component estimates achieved from a multiple trait mixed model enabled inference across multiple sets of recursive models, with the sole prerequisite of being likelihood equivalent. Furthermore, the aforementioned transformations simplify the handling of missing data when conducting inference within the realm of recursive models.
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- 2024
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70. Dietary combination of linseed and hazelnut skin as a sustainable strategy to enrich lamb with health promoting fatty acids
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Martino Musati, Pilar Frutos, Antonino Bertino, Gonzalo Hervás, Giuseppe Luciano, Claudio Forte, Alessandro Priolo, Massimiliano Lanza, Marco Bella, Luisa Biondi, and Antonio Natalello
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By-product ,Phenolic compounds ,Tannins ,Omega-3 ,Rumen ,Meat ,Medicine ,Science - Abstract
Abstract This study investigated the effect of the inclusion of extruded linseed and hazelnut skin on fatty acid (FA) metabolism in finishing lambs. Forty lambs were divided into 4 groups and fed for 60 d with: a conventional cereal-based diet, or the same diet with 8% of extruded linseed, or 15% of hazelnut skin, or 4% of linseed plus 7.5% of hazelnut skin as partial replacement of maize. Dietary treatments did not affect growth performances, carcass traits, and ruminal fermentation. The combined effect of linseed and hazelnut skin enriched the intramuscular fat with health promoting FA. Particularly, increases in α-linolenic acid (3.75-fold), and very long-chain n-3 poly-unsaturated FA (+ 40%) were attributed to the supplementation with linseed, rich in α-linolenic acid. In addition, increases in rumenic (+ 33%), and vaccenic (+ 59%) acids were attributed to hazelnut skin tannins modulating ruminal biohydrogenation and accumulating intermediate metabolites. The simultaneous inclusion of linseed and hazelnut skin can be a profitable strategy for enriching the intramuscular fat of lambs with health promoting FA, without adverse effects on ruminal fermentation and animal performance.
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- 2024
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71. Nigrostriatal degeneration determines dynamics of glial inflammatory and phagocytic activity
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Leyre Ayerra, Miguel Angel Abellanas, Leyre Basurco, Ibon Tamayo, Enrique Conde, Adriana Tavira, Amaya Trigo, Clara Vidaurre, Amaia Vilas, Patxi San Martin-Uriz, Esther Luquin, Pedro Clavero, Elisa Mengual, Sandra Hervás-Stubbs, and Maria S. Aymerich
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Parkinson´s disease ,Microglia ,Neurodegeneration ,Phagocytosis ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Glial cells are key players in the initiation of innate immunity in neurodegeneration. Upon damage, they switch their basal activation state and acquire new functions in a context and time-dependent manner. Since modulation of neuroinflammation is becoming an interesting approach for the treatment of neurodegenerative diseases, it is crucial to understand the specific contribution of these cells to the inflammatory reaction and to select experimental models that recapitulate what occurs in the human disease. Previously, we have characterized a region-specific activation pattern of CD11b+ cells and astrocytes in the α-synuclein overexpression mouse model of Parkinson´s disease (PD). In this study we hypothesized that the time and the intensity of dopaminergic neuronal death would promote different glial activation states. Dopaminergic degeneration was induced with two administration regimens of the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), subacute (sMPTP) and chronic (cMPTP). Our results show that in the sMPTP mouse model, the pro-inflammatory phenotype of striatal CD11b+ cells was counteracted by an anti-inflammatory astrocytic profile. In the midbrain the roles were inverted, CD11b+ cells exhibited an anti-inflammatory profile and astrocytes were pro-inflammatory. The overall response generated resulted in decreased CD4 T cell infiltration in both regions. Chronic MPTP exposure resulted in a mild and prolonged neuronal degeneration that generated a pro-inflammatory response and increased CD4 T cell infiltration in both regions. At the onset of the neurodegenerative process, microglia and astrocytes cooperated in the removal of dopaminergic terminals. With time, only microglia maintained the phagocytic activity. In the ventral midbrain, astrocytes were the main phagocytic mediators at early stages of degeneration while microglia were the major phagocytic cells in the chronic state. In this scenario, we questioned which activation pattern recapitulates better the features of glial activation in PD. Glial activation in the cMPTP mouse model reflects many pathways of their corresponding counterparts in the human brain with advanced PD. Altogether, our results point toward a context-dependent cooperativity of microglia/myeloid cells and astrocytes in response to neuronal damage and the relevance of selecting the right experimental models for the study of neuroinflammation. Graphical abstract
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- 2024
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72. Modeling Backgrounds for the MAJORANA DEMONSTRATOR
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Haufe, C. R., Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Nuclear Experiment - Abstract
The MAJORANA DEMONSTRATOR is a neutrinoless double-beta decay ($0\nu\beta\beta$) experiment containing $\sim$30 kg of p-type point contact germanium detectors enriched to 88% in 76Ge and $\sim$14 kg of natural germanium detectors. The detectors are housed in two electroformed copper cryostats and surrounded by a graded passive shield with active muon veto. An extensive radioassay campaign was performed prior to installation to insure the use of ultra-clean materials. The DEMONSTRATOR achieved one of the lowest background rates in the region of the $0\nu\beta\beta$ Q-value, 15.7 $\pm$ 1.4 cts/(FWHM t y) from the low-background configuration spanning most of the 64.5 kg-yr active exposure. Nevertheless this background rate is a factor of five higher than the projected background rate. This discrepancy arises from an excess of events from the 232Th decay chain. Background model fits aim to understand this deviation from assay-based projections, potentially determine the source(s) of observed backgrounds, and allow a precision measurement of the two-neutrino double-beta decay half-life. The fits agree with earlier simulation studies, which indicate the origin of the 232Th excess is not from a near-detector component and have informed design decisions for the next-generation LEGEND experiment. Recent findings have narrowed the suspected locations for the excess activity, motivating a final simulation and assay campaign to complete the background model., Comment: 8 pages, 6 figures, Proceedings from the Low Radioactivity Techniques Workshop 2022 in Rapid City, SD, USA
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- 2022
73. Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR
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Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Physics - Instrumentation and Detectors - Abstract
P-type point contact (PPC) high-purity germanium detectors are an important technology in astroparticle and nuclear physics due to their superb energy resolution, low noise, and pulse shape discrimination capabilities. Analysis of data from the MAJORANA DEMONSTRATOR, a neutrinoless double-beta decay experiment deploying PPC detectors enriched in $^{76}$Ge, has led to several novel improvements in the analysis of PPC signals. In this work we discuss charge trapping in PPC detectors and its effect on energy resolution. Small dislocations or impurities in the crystal lattice result in trapping of charge carriers from an ionization event of interest, attenuating the signal and degrading the measured energy. We present a modified digital pole-zero correction to the signal energy estimation that counters the effects of charge trapping and improves the energy resolution of the MAJORANA DEMONSTRATOR by approximately 30% to around 2.4 keV FWHM at 2039 keV, the $^{76}$Ge $Q$-value. An alternative approach achieving similar resolution enhancement is also presented., Comment: 12 pages, 13 figures
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- 2022
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74. Interpretable Boosted Decision Tree Analysis for the Majorana Demonstrator
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Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y -D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez-Castano, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., and Yu, C. -H.
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Physics - Data Analysis, Statistics and Probability ,Computer Science - Machine Learning ,Nuclear Experiment - Abstract
The Majorana Demonstrator is a leading experiment searching for neutrinoless double-beta decay with high purity germanium detectors (HPGe). Machine learning provides a new way to maximize the amount of information provided by these detectors, but the data-driven nature makes it less interpretable compared to traditional analysis. An interpretability study reveals the machine's decision-making logic, allowing us to learn from the machine to feedback to the traditional analysis. In this work, we have presented the first machine learning analysis of the data from the Majorana Demonstrator; this is also the first interpretable machine learning analysis of any germanium detector experiment. Two gradient boosted decision tree models are trained to learn from the data, and a game-theory-based model interpretability study is conducted to understand the origin of the classification power. By learning from data, this analysis recognizes the correlations among reconstruction parameters to further enhance the background rejection performance. By learning from the machine, this analysis reveals the importance of new background categories to reciprocally benefit the standard Majorana analysis. This model is highly compatible with next-generation germanium detector experiments like LEGEND since it can be simultaneously trained on a large number of detectors., Comment: 13 pages, 9 figures
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- 2022
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75. Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double-$\beta$ Decay in $^{76}$Ge
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Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Barton, P. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Nuclear Experiment ,High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
The MAJORANA DEMONSTRATOR searched for neutrinoless double-$\beta$ decay ($0\nu\beta\beta$) of $^{76}$Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-background shield. The arrays operated with up to 40.4 kg of detectors (27.2 kg enriched to $\sim$88\% in $^{76}$Ge). From these measurements, the DEMONSTRATOR has accumulated 64.5 kg yr of enriched active exposure. With a world-leading energy resolution of 2.52 keV FWHM at the 2039 keV $Q_{\beta\beta}$ (0.12\%), we set a half-life limit of $0\nu\beta\beta$ in $^{76}$Ge at $T_{1/2}>8.3\times10^{25}$ yr (90\% C.L.). This provides a range of upper limits on $m_{\beta\beta}$ of $(113-269)$ meV (90\% C.L.), depending on the choice of nuclear matrix elements., Comment: 8 pages, 2 figures
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- 2022
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76. 20124. REPERCUSIÓN DE LA NUTRICIÓN EN LA COGNICIÓN DE PACIENTES CON EM DE BUENA EVOLUCIÓN CLÍNICA
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A. Gil Sánchez, M. Canudes Solans, H. Gonzalo Benito, L. Nogueras Penabad, C. González Mingot, J. Hervás García, P. Valcheva, S. Peralta Moncusí, M. Solana Moga, P. Torres Cabestany, A. Sancho Saldaña, L. Quibus Requena, J. Serrano Casasola, and L. Brieva Ruiz
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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77. 20803. INFLUENCIA DE LOS FACTORES SOCIALES Y DEMOGRÁFICOS EN LOS TIEMPOS DE ATENCIÓN AL CÓDIGO ICTUS: ANÁLISIS MULTIDIMENSIONAL DE 131 BARRIOS DE UN NÚCLEO URBANO
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R. Alonso Castillo, N. Riera López, A. Lorente Moro, E. de Celis Ruiz, A. Higuera Ruiz de la Hermosa, M. Lorenzo Diéguez, M. Alonso de Leciñana Cases, C. Gómez-Escalonilla Escobar, C. Estebas Armas, C. Hervás Testal, R. Rigual Bobillo, L. Casado Fernández, L. González Martín, A. Ruiz Ares, P. Calleja Castaño, A. García Pastor, A. García Torres, A. Cruz Culebras, Á. Ximénez-Carrillo Rico, N. Rodríguez Rodil, J. Martínez Gómez, B. Fuentes Gimeno, and J. Rodríguez-Pardo de Donlebún
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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78. 20275. SITUACIÓN DE LA FISIOTERAPIA NEUROLÓGICA EN ESPAÑA. UNA ENCUESTA NACIONAL
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A. Lerín Calvo, S. Peláez Hervás, M. Moreno Verdú, C. Rodríguez López, and I. Sanz Esteban
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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79. 20780. RESULTADOS DEL TRATAMIENTO DE LA ESTENOSIS CAROTÍDEA SEGÚN DECISIÓN DE UN COMITÉ MULTIDISCIPLINAR DE PATOLOGÍA CEREBROVASCULAR
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C. Hervás Testal, A. Adán Gurpegui, P. López Grueiro, M. Alonso de Leciñana, L. Casado, E. de Celis, B. Fuentes, L. González, R. Rigual, G. Ruíz Ares, Á. Fernández Heredero, P. Navia Álvarez, A. Fernández Prieto, A. Álvarez Muelas, R. Frutos Martínez, B. Marín Aguilera, A. Barrios, and J. Rodríguez-Pardo
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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80. 21427. LA INCANSABLE BÚSQUEDA DE LA ENDOCARDITIS INFECCIOSA
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R. González Sarmiento, B. Díaz Pollán, C. Marcelo, E. Prieto Moriche, U. Ramírez, B. Hernández, P. Navia, B. Fuentes, R. Rigual, and C. Hervás
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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81. Atrial Imaging and Cardiac Rhythm in Cryptogenic Embolic Stroke: The ARIES Study
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Ricardo Rigual, Sergio Castrejón‐Castrejón, Lucía Fernández‐Gassó, Jesús García‐Castro, Jorge Rodríguez‐Pardo, Marcel Martínez‐Cossiani, Elena de Celis‐Ruiz, Laura Casado‐Fernández, Carlos Hervás, Elisa Alonso‐López, María Alonso de Leciñana, Exuperio Díez‐Tejedor, Esther Pérez‐David, Gerardo Ruiz‐Ares, José L. Merino, and Blanca Fuentes
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advanced echocardiography ,atrial cardiopathy ,atrial fibrillation ,cardiac rhythm monitoring ,ischemic stroke ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Unknown cardioembolic sources are frequent causes of cryptogenic stroke. We analyzed the risk of atrial fibrillation (AF) or high burden of ectopic atrial activity (HBEA) in patients with cryptogenic stroke, assessing atrial function and 1‐year outcomes. Methods and Results The ARIES (Atrial Imaging and Cardiac Rhythm in Cryptogenic Embolic Stroke) study is an observational study including patients with cryptogenic stroke. We analyzed the frequency of AF and HBEA (>3000 atrial ectopic beats/day or >2 bursts or atrial tachycardia between 3 beats and ≤30 seconds) in two 30‐day Holter‐ECGs, comparing advanced echocardiography signs of left atrial (LA) dysfunction according to rhythm: AF, HBEA, and normal sinus rhythm. We also evaluated 1‐year stroke recurrence and mortality. The study included 109 patients; 35 (32.1%) patients had AF, 27 (24.8%) HBEA, and 47 (43.1%) normal sinus rhythm. Compared with those with normal sinus rhythm, patients with AF presented higher 2‐dimensional and 3‐dimensional LA indexed volumes (38.8±11.2 versus 27.3±11.8 mL/m2, and 50.6±17.2 versus 34.0±15.4 mL/m2, respectively, P
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- 2024
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82. Glycaemia and ischaemia-reperfusion brain injury in patients with ischaemic stroke treated with mechanical thrombectomy (GLIAS-MT): an observational, unicentric, prospective study protocol
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Laura González, Pedro Navia, Ricardo Rigual, Blanca Fuentes, María Alonso de Leciñana, Remedios Frutos, Elena de Celis-Ruiz, Maria Gutiérrez-Fernández, Jorge Rodríguez-Pardo, Carlos Hervás, Irene Peirotén, Elisa Alonso-López, Laura Casado, Andrés Francisco Fernández Prieto, Rebeca Gallego-Ruiz, Noemí González Pérez de Villar, Laura Otero-Ortega, Javier Pozo-Novoa, and Gerardo Ruiz
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Medicine - Abstract
Introduction Poststroke hyperglycaemia is an independent risk factor for poorer outcomes in patients treated with mechanical thrombectomy (MT) and is associated with a lower probability of functional recovery and higher mortality at 3 months. This study aims to evaluate the association between glucose levels during cerebral reperfusion with MT and functional recovery at 3 months, measured by subcutaneous continuous glucose monitoring (CGM) devices.Methods This prospective observational study aims to recruit 100 patients with ischaemic stroke and large anterior circulation vessel occlusion, in whom MT is indicated. CGM will be performed using a Freestyle Libre ProIQ device (FSL-CGM, Abbott Diabetes Care, Alameda, California, USA), which will be implanted on admission to the emergency department, to monitor glucose levels before, during and after reperfusion. The study’s primary endpoint will be the functional status at 3 months, as measured by the dichotomised modified Rankin Scale (0–2 indicating good recovery and 3–6 indicating dependency or death). We will analyse expression profiles of microRNA (miRNA) at the time of reperfusion and 24 hours later, as potential biomarkers of ischaemic-reperfusion injury. The most promising miRNAs include miR-100, miR-29b, miR-339, miR-15a and miR-424. All patients will undergo treatment according to current international recommendations and local protocols for the treatment of stroke, including intravenous thrombolysis if indicated.Ethics and dissemination This study (protocol V.1.1, dated 29 October 2021, code 6017) has been approved by the Clinical Research Ethics Committee of La Paz University Hospital (Madrid, Spain) and has been registered in ClinicalTrials.gov (NCT 05871502). Study results will be disseminated through peer-reviewed publications in Open Access format and at conference presentations.Trial registration number NCT05871502.
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- 2024
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83. Milk transcriptome biomarker identification to enhance feed efficiency and reduce nutritional costs in dairy ewes
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A. Suárez-Vega, B. Gutiérrez-Gil, P.A.S. Fonseca, G. Hervás, R. Pelayo, P.G. Toral, H. Marina, P. de Frutos, and J.J. Arranz
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Biomarkers ,Dairy sheep ,Feed Efficiency ,Machine Learning ,Transcriptomics ,Animal culture ,SF1-1100 - Abstract
In recent years, rising prices for high-quality protein-based feeds have significantly increased nutrition costs. Consequently, investigating strategies to reduce these expenses and improve feed efficiency (FE) have become increasingly important for the dairy sheep industry. This research investigates the impact of nutritional protein restriction (NPR) during prepuberty and FE on the milk transcriptome of dairy Assaf ewes (sampled during the first lactation). To this end, we first compared transcriptomic differences between NPR and control ewes. Subsequently, we evaluated gene expression differences between ewes with divergent FE, using feed conversion ratio (FCR), residual feed intake (RFI), and consensus classifications of high− and low-FE animals for both indices. Lastly, we assess milk gene expression as a predictor of FE phenotype using random forest. No effect was found for the prepubertal NPR on milk performance or FE. Moreover, at the milk transcriptome level, only one gene, HBB, was differentially expressed between the NPR (n = 14) and the control group (n = 14). Further, the transcriptomic analysis between divergent FE sheep revealed 114 differentially expressed genes (DEGs) for RFI index (high-FERFI = 10 vs low-FERFI = 10), 244 for FCR (high-FEFCR = 10 vs low-FEFCR = 10), and 1 016 DEGs between divergent consensus ewes for both indices (high-FEconsensus = 8 vs low-FEconsensus = 8). These results underscore the critical role of selected FE indices for RNA-Seq analyses, revealing that consensus divergent animals for both indices maximise differences in transcriptomic responses. Genes overexpressed in high-FEconsensus ewes were associated with milk production and mammary gland development, while low-FEconsensus genes were linked to higher metabolic expenditure for tissue organisation and repair. The best prediction accuracy for FE phenotype using random forest was obtained for a set of 44 genes consistently differentially expressed across lactations, with Spearman correlations of 0.37 and 0.22 for FCR and RFI, respectively. These findings provide insights into potential sustainability strategies for dairy sheep, highlighting the utility of transcriptomic markers as FE proxies.
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- 2024
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84. Tethered IL15-IL15Rα augments antitumor activity of CD19 CAR-T cells but displays long-term toxicity in an immunocompetent lymphoma mouse model
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Felipe Prosper, Sandra Hervás-Stubbs, Juan Jose Lasarte, Noelia Casares, Teresa Lozano, Celia Martín-Otal, Aritz Lasarte-Cia, Flor Navarro, Inés Sánchez-Moreno, Marta Gorraiz, Patricia Sarrión, Juan Roberto Rodriguez-Madoz, Jesús San Miguel, and Lorea Jordana
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background Adoptive cell therapy using genetically modified T cells to express chimeric antigen receptors (CAR-T) has shown encouraging results, particularly in certain blood cancers. Nevertheless, over 40% of B cell malignancy patients experience a relapse after CAR-T therapy, likely due to inadequate persistence of the modified T cells in the body. IL15, known for its pro-survival and proliferative properties, has been suggested for incorporation into the fourth generation of CAR-T cells to enhance their persistence. However, the potential systemic toxicity associated with this cytokine warrants further evaluation.Methods We analyzed the persistence, antitumor efficacy and potential toxicity of anti-mouse CD19 CAR-T cells which express a membrane-bound IL15-IL15Rα chimeric protein (CD19/mbIL15q CAR-T), in BALB/c mice challenged with A20 tumor cells as well as in NSG mice.Results Conventional CD19 CAR-T cells showed low persistence and poor efficacy in BALB/c mice treated with mild lymphodepletion regimens (total body irradiation (TBI) of 1 Gy). CD19/mbIL15q CAR-T exhibits prolonged persistence and enhanced in vivo efficacy, effectively eliminating established A20 B cell lymphoma. However, this CD19/mbIL15q CAR-T displays important long-term toxicities, with marked splenomegaly, weight loss, transaminase elevations, and significant inflammatory findings in some tissues. Mice survival is highly compromised after CD19/mbIL15q CAR-T cell transfer, particularly if a high TBI regimen is applied before CAR-T cell transfer.Conclusion Tethered IL15-IL15Rα augments the antitumor activity of CD19 CAR-T cells but displays long-term toxicity in immunocompetent mice. Inducible systems to regulate IL15-IL15Rα expression could be considered to control this toxicity.
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- 2024
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85. Maternal genetic effects throughout the life of the dam in Pirenaica beef cattle. a random regression model approach
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A. Ruzzon, D. López-Carbonell, C. Hervás-Rivero, H. Srihi, R. Mantovani, J. Altarriba, and L. Varona
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Age changes ,Genetic correlation ,Heritability ,Maternal environment ,Weight at 90 days ,Animal culture ,SF1-1100 - Abstract
In beef cattle, dams play a crucial role in shaping the pre- and postnatal environment for the growth of their offspring. Acknowledging the substantial impact of maternal influence on the early development of calves, researchers utilize maternal animal models. These models take into account both maternal genetic and permanent environmental effects, operating under the assumption that these influences remain constant throughout the productive life of the cow. Nevertheless, it cannot be ruled out that these genetic and environmental effects may evolve throughout the lifespan of the cows. Therefore, this study aims to describe the changes in genetic and environmental maternal effects over the productive lifespan of cows. To accomplish this goal, we utilized random regression models, incorporating the age of the dam effect, maternal genetic effects, and environmental permanent effects using Legendre orthogonal polynomials. Additionally, the analytical model incorporated a covariate to adjust for the calf’s age at recording, a two-level sex effect, a random herd-year-season effect, and an additive direct genetic effect associated linked to the calf. The dataset comprised information from dams aged between 2 and 16 years, resulting in a final database that comprised weight records of 58 332 calves from 21 673 dams. The average weight at 90 days was 135.0 ± 39.3 kg, and the mean age of the dam at calving was 7.03 ± 3.41 years. We evaluated models incorporating 2, 3, 4, 5, and 6 orthogonal polynomials alongside the standard maternal animal model. Afterward, we selected the model with five orthogonal polynomials based on the Akaike Information Criteria. The Restricted Maximum Likelihood estimates within this model indicated a direct heritability of around 0.50, and a maternal heritability ranging between 0.15 and 0.25, exhibiting a consistent increase between 4, 5 to 13 years. The genetic correlation estimates between direct and maternal genetic effects remained stable at approximately −0.55 across the lifespan of the cows. Furthermore, maternal genetic correlations between different ages of the dam decreased to around 0.7 for more distant age points. The maternal permanent correlations were notably lower, occasionally even reaching negative values, suggesting variability in environmental influence on maternal effects over the productive lifespan of the cow. Finally, the model enables the prediction of breeding values for the maternal genetic effects of the cow across its lifespan, providing opportunities for innovative selection strategies on the maternal side.
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- 2024
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86. Exotic dark matter search with the Majorana Demonstrator
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Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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High Energy Physics - Experiment ,High Energy Physics - Phenomenology - Abstract
With excellent energy resolution and ultra-low level radiogenic backgrounds, the high-purity germanium detectors in the Majorana Demonstrator enable searches for several classes of exotic dark matter (DM) models. In this work, we report new experimental limits on keV-scale sterile neutrino DM via the transition magnetic moment from conversion to active neutrinos, $\nu_s \rightarrow \nu_a$. We report new limits on fermionic dark matter absorption ($\chi + A \rightarrow \nu + A$) and sub-GeV DM-nucleus 3$\rightarrow$2 scattering ($\chi + \chi + A \rightarrow \phi + A$), and new exclusion limits for bosonic dark matter (axionlike particles and dark photons). These searches utilize the (1--100)-keV low energy region of a 37.5-kg y exposure collected by the Demonstrator between May 2016 and November 2019, using a set of $^{76}$Ge-enriched detectors whose surface exposure time was carefully controlled, resulting in extremely low levels of cosmogenic activation., Comment: 7 pages, 6 figures
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- 2022
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87. Search for solar axions via axion-photon coupling with the Majorana Demonstrator
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Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Nuclear Experiment ,High Energy Physics - Experiment - Abstract
Axions were originally proposed to explain the strong-CP problem in QCD. Through the axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of $^{76}$Ge-enriched high purity germanium detectors using a 33 kg-yr exposure collected between Jan. 2017 and Nov. 2019. A temporal-energy analysis gives a new limit on the axion-photon coupling as $g_{a\gamma}<1.45\times 10^{-9}$ GeV$^{-1}$ (95% C.I.) for axions with mass up to 100 eV/$c^2$. This improves laboratory-based limits between about 1 eV/$c^2$ and 100 eV/$c^2$., Comment: Minor updates to match published version
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- 2022
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88. Perceptions of University Students towards Digital Transformation during the Pandemic
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Hervás-Gómez, Carlos, Díaz-Noguera, María Dolores, De la Calle-Cabrera, Ana María, and Guijarro-Cordobés, Olga
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The aim of this study is to determine the perceptions of university students toward teaching-learning processes during the COVID-19 pandemic. This research gathers inquiries made worldwide on the perceptions of students in higher education during a state of alarm. The proposed objectives were (a) to analyse the perception of students toward teaching-learning processes in university; (b) to determine the assessment given by students about the changes that took place in university teaching as a result of COVID-19; and (c) to explore resources (hardware and software), professional collaboration, digital pedagogy and student empowerment (motivation) regarding digital education and recent changes in university teaching due to the pandemic. This study used a non-experimental, descriptive design based on opinion polls or surveys. The results show a positive correlation between digital pedagogy, student motivation and digital environments. As a conclusion, we encourage the scientific community to continue delving into the motivation, collaboration and reflective exchange of experiences, self-learning and promotion of initiatives that foster the development of competencies in future teachers. It is also important to continue the research on integrated designs in training processes in university, tutoring and continuous evaluation, as they are key for digital transformation in universities.
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- 2021
89. University Students' Perceptions toward the Use of an Online Student Response System in Game-Based Learning Experiences with Mobile Technology
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Perera, Víctor H. and Hervás-Gómez, Carlos
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The progressive integration of mobile technology in the classroom is generating new scenarios to innovate teaching methods. The aim of this study was to analyse the perceptions of university students toward the use of Socrative and its implications in gamified learning situations. This is a descriptive-survey investigation, complemented with content analysis techniques. The data were collected using a questionnaire designed ad hoc by Quiroga-Estévez et al. and structured interviews. The sample consisted of undergraduate students (n=472) of the degree of Primary Education from the Faculty of Education Sciences of a Spanish university. The results show significant changes in the learning process of the students, in social relations and in the teaching methodology.
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- 2021
90. Teaching Innovation in the Development of Professional Practices: Use of the Collaborative Blog
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Corujo-Vélez, Carmen, Barragán-Sánchez, Raquel, Hervás-Gómez, Carlos, and Palacios-Rodríguez, Antonio
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The development of professional practices during the university stage is a fundamental factor for quality skills development. For many students, it is the first real experience in a professional context, so continuous monitoring by teachers is necessary. This article presents an innovative proposal to develop the follow-up of the professional practices of the degree in Primary Education, and two Masters' in Psychopedagogy and Special Educational Needs using a learning management system (LMS) (Blackboard). The experience was developed by a team of teachers from the departments of Didactics and Educational Organization and Research Methods and Educational Diagnosis of the University of Seville (Spain). The aspects to be studied are the development of communication, reflection, and collaborative learning processes during the internship period. After an explicit agreement, 24 students (10 from the course "Professional Practices I" in undergraduate students; and the others from the Master's) committed to periodically using the blog designed ad hoc for this experience. A content analysis of the speeches posted on the blog was carried out, examining the changes, the advantages, and the disadvantages that this model entailed. It allowed observing similarities and differences between both groups of students. As the main conclusion, there were some differences between the two groups of students, regarding the number, type, and contents of interventions; there were no differences in the assessment of the methodology, all the students thought that it was a very positive assessment of the experience for generating information exchange networks among colleagues and teachers. Finally, the relevance of constant monitoring of the academic tutor was highlighted.
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- 2021
91. Effectiveness and Safety of Teriflunomide in Relapsing–Remitting Multiple Sclerosis and Improvements in Quality of Life: Results from the Real-World TERICARE Study
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José E. Meca-Lallana, José M. Prieto González, Ana B. Caminero Rodríguez, Javier Olascoaga Urtaza, Ana M. Alonso, Eduardo Durán Ferreras, Raúl Espinosa, Julio Dotor, Mercedes Romera, Adrián Ares Luque, Domingo Pérez Ruiz, Carmen Calles, Miguel A. Hernández, Miguel Hervás García, Amelia Mendoza Rodríguez, Yasmina Berdei Montero, Nieves Téllez, Nicolás Herrera Varó, Javier Sotoca, Silvia Presas-Rodríguez, Luis A. Querol Gutierrez, Mariona Hervás Pujol, Jordi Batlle Nadal, Gisela Martín Ozaeta, Laura Gubieras Lillo, Sergio Martínez Yélamos, Lluís Ramió-Torrentà, Javier Mallada Frechin, Antonio Belenguer Benavides, Francisco Gascón-Giménez, Bonaventura Casanova, Lamberto Landete Pascual, Leticia Berenguer, Laura Navarro, Montserrat Gómez Gutierrez, Carmen Durán, Ana Rodríguez Regal, Elena Álvarez, Daniel A. García-Estévez, Ana M. López Real, Miguel A. Llaneza González, María E. Marzo Sola, José L. Sánchez-Menoyo, Agustín Oterino, Ramón Villaverde González, Tamara Castillo-Triviño, Amaya Álvarez de Arcaya, and Cristina Llarena
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Annualised relapse rate ,Clinical practice ,Disability ,Health-related quality of life ,Multiple sclerosis ,Teriflunomide ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Introduction Teriflunomide is a once-daily oral immunomodulator approved for relapsing forms of multiple sclerosis (MS) or relapsing–remitting multiple sclerosis (RRMS; depending on the local label), based on extensive evidence from clinical trials and a real-world setting on efficacy, tolerability and patient-reported benefits. The TERICARE study assessed the impact of teriflunomide treatment over 2 years on health-related quality of life (HRQoL) and some of the most common and disabling symptoms of MS, such as fatigue and depression. Methods This prospective observational study in Spain included RRMS patients treated with teriflunomide for ≤ 4 weeks. The following patient-reported outcomes (PROs) were collected at baseline and every 6 months for 2 years: the 29-item Multiple Sclerosis Impact Scale version 2 (MSIS-29), the 21-item Modified Fatigue Impact Scale (MFIS-21), the Beck Depression Inventory (BDI-II), the Short Form (SF)-Qualiveen and the Treatment Satisfaction Questionnaire for Medication v1.4 (TSQM). Annualised relapse rate (ARR), disability progression according to the Expanded Disability Status Scale (EDSS), and no evidence of disease activity (NEDA-3) were also assessed. Results A total of 325 patients were analysed. Patients had a mean (SD) age of 43.2 years (10.4), a mean baseline EDSS score of 1.75 (1.5), a mean number of relapses in the past 2 years of 1.5 (0.7), and 64% had received prior disease-modifying therapy (DMT). Patients showed significant improvements in the psychological domain of MSIS-29 from 35.9 (26.6) at baseline to 29.4 (25.5) at 18 months (p = 0.004) and 29.0 (24.6) at 24 months (p = 0.002). Levels of fatigue and depression were also reduced. After 2 years of treatment with teriflunomide, ARR was reduced to 0.17 (95% CI 0.14–0.21) from the baseline of 0.42 (95% CI 0.38–0.48), representing a 60.1% reduction. Mean EDSS scores remained stable during the study, and 79.9% of patients showed no disability progression. 54.7% of patients achieved NEDA-3 in the first 12 months, which increased to 61.4% during months 12–24. Patients reported increased satisfaction with treatment over the course of the study, regardless of whether they were DMT naive or not. Conclusion Teriflunomide improves psychological aspects of HRQoL and maintains low levels of fatigue and depression. Treatment with teriflunomide over 2 years is effective in reducing ARR and disability progression.
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- 2023
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92. A memetic dynamic coral reef optimisation algorithm for simultaneous training, design, and optimisation of artificial neural networks
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Francisco Bérchez-Moreno, Antonio M. Durán-Rosal, César Hervás Martínez, Pedro A. Gutiérrez, and Juan C. Fernández
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Artificial neural networks ,Neuroevolution ,Coral reef optimisation algorithm ,Local search ,Classification ,Robust estimators ,Medicine ,Science - Abstract
Abstract Artificial Neural Networks (ANNs) have been used in a multitude of real-world applications given their predictive capabilities, and algorithms based on gradient descent, such as Backpropagation (BP) and variants, are usually considered for their optimisation. However, these algorithms have been shown to get stuck at local optima, and they require a cautious design of the architecture of the model. This paper proposes a novel memetic training method for simultaneously learning the ANNs structure and weights based on the Coral Reef Optimisation algorithms (CROs), a global-search metaheuristic based on corals’ biology and coral reef formation. Three versions based on the original CRO combined with a Local Search procedure are developed: (1) the basic one, called Memetic CRO; (2) a statistically guided version called Memetic SCRO (M-SCRO) that adjusts the algorithm parameters based on the population fitness; (3) and, finally, an improved Dynamic Statistically-driven version called Memetic Dynamic SCRO (M-DSCRO). M-DSCRO is designed with the idea of improving the M-SCRO version in the evolutionary process, evaluating whether the fitness distribution of the population of ANNs is normal to automatically decide the statistic to be used for assigning the algorithm parameters. Furthermore, all algorithms are adapted to the design of ANNs by means of the most suitable operators. The performance of the different algorithms is evaluated with 40 classification datasets, showing that the proposed M-DSCRO algorithm outperforms the other two versions on most of the datasets. In the final analysis, M-DSCRO is compared against four state-of-the-art methods, demonstrating its superior efficacy in terms of overall accuracy and minority class performance.
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- 2024
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93. Fatty acid synthase (FASN) signalome: A molecular guide for precision oncology
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Javier A. Menendez, Elisabet Cuyàs, Jose Antonio Encinar, Travis Vander Steen, Sara Verdura, Àngela Llop‐Hernández, Júlia López, Eila Serrano‐Hervás, Sílvia Osuna, Begoña Martin‐Castillo, and Ruth Lupu
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cell fate ,ferroptosis ,immunotherapy ,metastasis ,mitochondrial priming ,molecular glues ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
The initial excitement generated more than two decades ago by the discovery of drugs targeting fatty acid synthase (FASN)‐catalyzed de novo lipogenesis for cancer therapy was short‐lived. However, the advent of the first clinical‐grade FASN inhibitor (TVB‐2640; denifanstat), which is currently being studied in various phase II trials, and the exciting advances in understanding the FASN signalome are fueling a renewed interest in FASN‐targeted strategies for the treatment and prevention of cancer. Here, we provide a detailed overview of how FASN can drive phenotypic plasticity and cell fate decisions, mitochondrial regulation of cell death, immune escape and organ‐specific metastatic potential. We then present a variety of FASN‐targeted therapeutic approaches that address the major challenges facing FASN therapy. These include limitations of current FASN inhibitors and the lack of precision tools to maximize the therapeutic potential of FASN inhibitors in the clinic. Rethinking the role of FASN as a signal transducer in cancer pathogenesis may provide molecularly driven strategies to optimize FASN as a long‐awaited target for cancer therapeutics.
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- 2024
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94. Retinal dysfunction in Huntington’s disease mouse models concurs with local gliosis and microglia activation
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Fátima Cano-Cano, Francisco Martín-Loro, Andrea Gallardo-Orihuela, María del Carmen González-Montelongo, Samanta Ortuño-Miquel, Irati Hervás-Corpión, Pedro de la Villa, Lucía Ramón-Marco, Jorge Navarro-Calvo, Laura Gómez-Jaramillo, Ana I. Arroba, and Luis M. Valor
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Medicine ,Science - Abstract
Abstract Huntington’s disease (HD) is caused by an aberrant expansion of CAG repeats in the HTT gene that mainly affects basal ganglia. Although striatal dysfunction has been widely studied in HD mouse models, other brain areas can also be relevant to the pathology. In this sense, we have special interest on the retina as this is the most exposed part of the central nervous system that enable health monitoring of patients using noninvasive techniques. To establish the retina as an appropriate tissue for HD studies, we need to correlate the retinal alterations with those in the inner brain, i.e., striatum. We confirmed the malfunction of the transgenic R6/1 retinas, which underwent a rearrangement of their transcriptome as extensive as in the striatum. Although tissue-enriched genes were downregulated in both areas, a neuroinflammation signature was only clearly induced in the R6/1 retina in which the observed glial activation was reminiscent of the situation in HD patient’s brains. The retinal neuroinflammation was confirmed in the slow progressive knock-in zQ175 strain. Overall, these results demonstrated the suitability of the mouse retina as a research model for HD and its associated glial activation.
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- 2024
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95. La historia como teoría crítica. La historia intelectual de Dominick LaCapra
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Alfonso Galindo Hervás
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historia intelectual ,teoría crítica ,lacapra ,agamben ,impolítico ,trauma ,Philosophy. Psychology. Religion ,Philosophy (General) ,B1-5802 - Abstract
Este artículo tiene dos objetivos. El principal es mostrar la concepción de la historiografía como teoría crítica en la obra de Dominick LaCapra. El secundario es exponer las consecuencias impolíticas de la teoría crítica contemporánea que subestima la atención a la historia. Con tal fin, enmarco la historia intelectual de LaCapra en el contexto de la renovación de la metodología historiográfica y muestro la relevancia del estudio del trauma en su concepción del conocimiento histórico. Posteriormente, muestro que la clave que convierte su concepto de historia en una teoría crítica es la idea de que la historia debe contribuir a elaborar el trauma y capacitar para la acción, así como la relación entre esta idea y el vínculo entre experiencia e identidad política. Después expongo la crítica de LaCapra a una corriente contemporánea de teoría crítica que renuncia a la elaboración del trauma. Por último, propongo tres categorías para identificar y analizar dicha corriente: diferencia histórica, viraje ético e impoliticidad.
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- 2024
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96. Evaluation of Nasal Obstruction Following Septoturbinoplasty Using the VAS and NOSE Scale
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Esteban Merino-Galvez and Javier Gómez-Hervás
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airway obstruction ,nasal obstruction ,nasal septum ,visual analogue scale ,Otorhinolaryngology ,RF1-547 - Abstract
Introduction: Patient satisfaction with septoturbinoplasty was measured using the subjective visual analogue scale (VAS) and Nasal Obstruction Symptom Evaluation (NOSE) scale. In addition, those factors that impacted satisfaction were confirmed. Materials and Methods: We conducted an observational study of patients who underwent septoturbinoplasty. Age, sex, smoking habit, duration of improvement, postoperative complications, type of packing and surgeon were analysed. The results were compared using the VAS and NOSE scale.Results: The improvement experienced with surgery corresponded to 69.80±26.97 points on the VAS 42.65±22.9 points (p
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- 2024
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97. Experimental study of 13C({\alpha},n)16O reactions in the Majorana Demonstrator calibration data
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MAJORANA Collaboration, Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., Lopez-Castano, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Nuclear Experiment ,High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied $^{13}$C($\alpha,n)^{16}$O reactions induced by $\alpha$-particles emitted within the calibration sources of the \textsc{Majorana Demonstrator}. These sources are thorium-based calibration standards enclosed in carbon-rich materials. The reaction rate was estimated by using the 6129-keV $\gamma$-rays emitted from the excited $^{16}$O states that are populated when the incoming $\alpha$-particles exceed the reaction Q-value. Thanks to the excellent energy performance of the \textsc{Demonstrator}'s germanium detectors, these characteristic photons can be clearly observed in the calibration data. Facilitated by \textsc{Geant4} simulations, a comparison between the observed 6129-keV photon rates and predictions by a TALYS-based software was performed. The measurements and predictions were found to be consistent, albeit with large statistical uncertainties. This agreement provides support for background projections from ($\alpha,n$)-reactions in future double-beta decay search efforts., Comment: Published version
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- 2022
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98. Search for charge nonconservation and Pauli exclusion principle violation with the Majorana Demonstrator
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MAJORANA Collaboration, Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M. L., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Oli, T. K., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X.
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Nuclear Experiment ,High Energy Physics - Experiment - Abstract
Charge conservation and the Pauli exclusion principle (PEP) result from fundamental symmetries in the Standard Model, and are typically taken as axiomatic. High-precision tests for small violations of these symmetries could point to new physics. In this work we consider three models for violation of these processes which would produce detectable ionization in the high-purity germanium detectors of the Majorana Demonstrator. Using a 37.5 kg-yr exposure, we report a new lower limit on the electron mean lifetime of $\tau_e > 3.2 \times 10^{25}$ yr (90\% CL), the best result for this decay channel ($e \rightarrow \nu_e \overline{\nu_e} \nu_e$ or more generally $e \rightarrow \mathrm{invisibles}$) in more than two decades. We also present searches for two types of violation of the PEP, setting new limits on the probability of two electrons forming a symmetric quantum state. Using our $^{228}$Th calibration data set, which introduces electrons new to the system through electron-positron pair production, we obtain a world-leading model-independent limit for a terrestrial experiment of $\beta^2/2 < 1.0 \times 10^{-3}$ (99.7\% CL). Our 37.5 kg-yr exposure is also used to search for a process where an electron in an atomic system spontaneously violates the PEP, resulting in a model-dependent upper limit of $\beta^2/2 < 1.0 \times 10^{-48}$ (90\% CL).
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- 2022
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99. The Phase-I Trigger Readout Electronics Upgrade of the ATLAS Liquid Argon Calorimeters
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Aad, G., Akimov, A. V., Khoury, K. Al, Aleksa, M., Andeen, T., Anelli, C., Aranzabal, N., Armijo, C., Bagulia, A., Ban, J., Barillari, T., Bellachia, F., Benoit, M., Bernon, F., Berthold, A., Bervas, H., Besin, D., Betti, A., Bianga, Y., Biaut, M., Boline, D., Boudreau, J., Bouedo, T., Braam, N., Bret, M. Cano, Brooijmans, G., Cai, H., Camincher, C., Camplani, A., Cap, S., Carbone, A., Carter, J. W. S., Chekulaev, S. V., Chen, H., Chen, K., Chevillot, N., Citterio, M., Cleland, B., Constable, M., de Jong, S., Deiana, A. M., Delmastro, M., Deng, B., Deschamps, H., Diaconu, C., Dik, A., Dinkespiler, B., Dayot, N. Dumont, Emerman, A., Enari, Y., Falke, P. J., Farrell, J., Fielitz, W., Fortin, E., Fragnaud, J., Franchino, S., Gantel, L., Gigliotti, K., Gong, D., Grabas, A., Grohs, P., Guettouche, N., Guillemin, T., Guo, D., Guo, J., Hasley, L., Hayes, C., Hentges, R., Hervas, L., Hils, M., Hobbs, J., Hoffman, A., Hoffmann, D., Horn, P., Hryn'ova, T., Iconomidou-Fayard, L., Iguchi, R., James, T., Johns, K., Junkermann, T., Kahra, C., Kay, E. F., Keeler, R., Haghighat, S. Ketabchi, Kinget, P., Knoops, E., Kolbasin, A., Krieger, P., Kuppambatti, J., Kurchaninov, L. L., Ladygin, E., Lafrasse, S., Landon, M. P. J., Lanni, F., Latorre, S., Laugier, D., Lazzaroni, M., Le, X., Bourlout, P. Le, Lee, C. A., Lefebvre, M., Leite, M. A. L., Leroy, C., Li, X., Li, Z., Liang, F., Liu, H., Liu, C., Liu, T., Ma, H., Ma, L. L., Mahon, D. J., Mallik, U., Mansoulie, B., Maslennikov, A. L., Matsuzawa, N., McPherson, R. A., Menke, S., Milic, A., Minami, Y., Molina, E., Monnier, E., Morange, N., Morvaj, L., Mueller, J., Mwewa, C., Narayan, R., Nikiforou, N., Ochoa, I., Oishi, R., Damazio, D. Oliveira, Owen, R. E., Pancake, C., Panchal, D. K., Perrot, G., Pleier, M. -A., Poffenberger, P., Porter, R., Quan, S., Rabel, J., Roy, A., Rutherfoord, J. P., Sabatini, F., Salomon, F., Sauvan, E., Schaffer, A. C., Schamberger, R. D., Schwemling, Ph., Secord, C., Selem, L., Sexton, K., Shafto, E., Oliveira, M. V. Silva, Simion, S., Singh, S., Sippach, W., Snesarev, A. A., Snyder, S., Spalla, M., Stärz, S., Straessner, A., Strizenec, P., Stroynowski, R., Sulin, V. V., Tanaka, J., Tang, S., Tapprogge, S., Tartarelli, G. F., Tateno, G., Terashi, K., Tisserant, S., Tompkins, D., Unal, G., Unal, M., Uno, K., Vallier, A., de Souza, S. Vieira, Walker, R., Wang, Q., Wang, C., Wang, R., Wessels, M., Wingerter-Seez, I., Wolniewicz, K., Wu, W., Xiandong, Z., Xu, R., Xu, H., Yamamoto, S., Yang, Y., Ye, J., Zaghia, H., Zang, J., Zhang, T., Zhu, H. L., Zhulanov, V., Zonca, E., and Zuk, G.
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Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
The Phase-I trigger readout electronics upgrade of the ATLAS Liquid Argon calorimeters enhances the physics reach of the experiment during the upcoming operation at increasing Large Hadron Collider luminosities. The new system, installed during the second Large Hadron Collider Long Shutdown, increases the trigger readout granularity by up to a factor of ten as well as its precision and range. Consequently, the background rejection at trigger level is improved through enhanced filtering algorithms utilizing the additional information for topological discrimination of electromagnetic and hadronic shower shapes. This paper presents the final designs of the new electronic elements, their custom electronic devices, the procedures used to validate their proper functioning, and the performance achieved during the commissioning of this system., Comment: 56 pages, 41 figures, 6 tables
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- 2022
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100. A novel wide-angle Compton Scanner setup to study bulk events in germanium detectors
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Abt, I., Gooch, C., Hagemann, F., Hauertmann, L., Aguilar, D. Hervas, Liu, X., Schulz, O., Schuster, M., and Zsigmond, A. J.
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Physics - Instrumentation and Detectors - Abstract
A novel Compton Scanner setup has been built, commissioned and operated at the Max-Planck-Institute for Physics in Munich to collect pulses from bulk events in high-purity germanium detectors for pulse shape studies. In this fully automated setup, the detector under test is irradiated from the top with 661.660 keV gammas, some of which Compton scatter inside the detector. The interaction points in the detector can be reconstructed when the scattered gammas are detected with a pixelated camera placed at the side of the detector. The wide range of accepted Compton angles results in shorter measurement times in comparison to similar setups where only perpendicularly scattered gammas are selected by slit collimators. In this paper, the construction of the Compton Scanner, its alignment and the procedure to reconstruct interaction points in the germanium detector are described in detail. The creation of a first pulse shape library for an n-type segmented point-contact germanium detector is described. The spatial reconstruction along the beam axis is validated by a comparison to measured surface pulses. A first comparison of Compton Scanner pulses to simulated pulses is presented to demonstrate the power of the Compton Scanner to test simulation inputs and models., Comment: 15 pages, 18 figures
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- 2022
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