25,593 results on '"Arbona A"'
Search Results
152. Space-Scale Hybrid Continuous-Discrete Sliding Frank-Wolfe Method
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Lage, Clara, primary, Pustelnik, Nelly, additional, Arbona, Jean Michel, additional, and Audit, Benjamin, additional
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- 2024
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153. Chlamydia muridarum Associated Pulmonary and Urogenital Disease and Pathology in a Colony of Enzootically Infected Il12rb2 Deficient and Stat1 Knockout Mice
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Mishkin, Noah, primary, Miranda, Ileana C, additional, Carrasco, Sebastian E, additional, Cheleuitte-Nieves, Christopher, additional, Ricart Arbona, Rodolfo J, additional, Wingert, Claire, additional, Sun, Joseph C, additional, and Lipman, Neil S, additional
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- 2024
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154. Career decision‐making difficulties among career‐decided college students
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Arbona, Consuelo, primary, Fan, Weihua, additional, de Dios, Marcel A., additional, and Olvera, Norma, additional
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- 2023
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155. Del agravio a la emulación. Análisis del efecto tractor en el traspaso de competencias en el Estado de las autonomías
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Novo-Arbona, Ainhoa, primary, Abete-García, Nora, additional, and Peña-Fernández, Simón, additional
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- 2023
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156. La escritura creativa y el estímulo de la voz. El ejemplo del máster de la Universidad Complutense de Madrid
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Arbona-Abascal, Guadalupe, primary
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- 2023
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157. Sostenibilidad y branding: del greenwashing a las marcas con propósito
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Canavese Arbona, Ana, primary, Heras Evangelio, David, additional, Lleonart García, Melani, additional, and Sanchis García, Álvaro, additional
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- 2023
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158. Censorship Files Regarding the Three First Novels of José Jiménez Lozano
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Guadalupe Arbona Abascal
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censorship ,francoism ,jiménez lozano ,historia de un otoño ,el sambenito ,la salamandra ,Philology. Linguistics ,P1-1091 - Abstract
The present study analyses the arbitrariness of censorship during Franco's regime. It is pointed out how the works of José Jiménez Lozano are a challenge to the censorship principles: the stories show the consequences of using authority as a deterrent of freedom,as wel l as, the irreducibility of a free conscience. It is based on the unpublished letters regarding José Jiménez Lozano's writings on 1960. In them appears the muddled warnings issued by the political authority, following the advice of the ecclesial authority,against his articles. Secondly, the present work studies the censo rship files regarding the three first novels of the writer: Historia de un otoño (1971), El sambenito (1972) and La salamandra (1973), which are kept at Archivo General de la Administración. The censorshipau thority urges to maintain Spain's image of a country of one faith and one thought.
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- 2020
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159. DETERMINACIÓN DE PROPUESTA TECNOLÓGICA PARA REDUCIR EL IMPACTO DEL MATERIAL PARTICULADO GENERADO EN LA TEXTILERA 'DESEMBARCO DEL GRANMA'
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Mercedes Arbona Cabrera, Isabel Cabrera Estrada, Mayra Caridad Morales Pérez, and María de los Ángeles García Hernández
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ciclones ,factores de emisión ,fuentes fijas ,material particulado ,Special industries and trades ,HD9000-9999 - Abstract
Introducción: La presencia en la atmósfera del material particulado ocasiona variedad de impactos a la vegetación, materiales y el hombre. Las emisiones principales de la textilera “Desembarco del Granma” provienen de la quema de fuel oil en los calentadores de aceite y en las calderas generadoras de vapor. Las emisiones se pueden estimar por medio de los factores de emisión. Objetivo: Determinar la propuesta tecnológica necesaria para reducir el impacto a la calidad del aire provocado por el material particulado generado por los procesos auxiliares de combustión en la UB “Desembarco del Granma”. Materiales y Métodos: Se emplearon los factores de emisión. La modelación de la dispersión de PM10 se realizó mediante el software especializado del Centro Meteorológico Provincial, basado en un modelo de pluma Gaussiano. Se utilizó el software Aspen Plus 8.0. Resultados y Discusión: Se estimaron las emisiones de PM10 y PM2.5. Las inmisiones de PM10 alcanzan valores máximos de 100 μg/m3, para una categoría de calidad del aire de mala al superar lo establecido por la NC 1020 (2014). Con el Aspen Plus se determinaron las características que tendrán los ciclones a agregar a las fuentes fijas consideradas. Se seleccionó el tipo Stairmand-HE. Conclusiones: La propuesta para mitigar el impacto ambiental del material particulado consiste en instalar dos ciclones, uno en el generador de vapor y otro en el calentador de aceite de la planta de servicios de Ingeniería de la UB “Desembarco del Granma”.
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- 2020
160. Manejo diagnóstico y terapéutico actual de la fractura de los primeros pasos
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Sandra Llorente Pelayo, Juan Rodríguez Fernández, M. Teresa Leonardo Cabello, Mónica Rubio Lorenzo, M. Dolores García Alfaro, and Carmelo Arbona Jiménez
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Toddler's fracture ,Tibia fracture ,Diagnosis ,Management ,Pediatrics ,RJ1-570 - Abstract
Resumen: Introducción: La fractura de los primeros pasos o fractura de toddler es una fractura espiroidea de tibia propia de la primera infancia. El objetivo es analizar su incidencia y el manejo diagnóstico y terapéutico actual. Pacientes y métodos: Estudio descriptivo retrospectivo de los pacientes de 0 a 3 años diagnosticados en un hospital terciario entre los años 2013 y 2017. Resultados: Registrados 53 pacientes (10,6 casos/año), con una mediana de edad de 2 años y ligero predominio masculino. La radiografía inicial resultó normal en el 24,5%. Con la aproximación inicial, el 69,8% de los pacientes se diagnosticaron de fractura, el 11,3% de sospecha de fractura y el 18,9% de contusión. El 22% precisaron prueba de control; 10 radiografía (patológica 90%) y 5 ecografía (patológica 80%, 3 de ellos con radiografía inicial normal). El 80,8% de los pacientes se inmovilizaron con férula frente al 19,2% en los que se realizó inmovilización flexible o no inmovilización. Se encontraron complicaciones en el 21,4% de los pacientes inmovilizados con férula, fundamentalmente úlceras por presión (19%), que fueron más frecuentes en este grupo que en los no inmovilizados (21,4 vs. 0%; p = 0,006), sin diferencias significativas en cuanto a tiempo hasta carga. Conclusiones: La radiografía simple tiene una sensibilidad limitada para el diagnóstico de la fractura de los primeros pasos. En el grupo de pacientes con radiografía normal el uso de ecografía puede contribuir al diagnóstico y a evitar radiación adicional. Aunque el tratamiento más común de esta fractura sigue siendo la inmovilización con férula, la alternativa sin inmovilización rígida no parece obtener peores resultados, incluso parece presentar menor morbilidad asociada al tratamiento. Abstract: Introduction: Toddler's fracture is an accidental spiral tibial fracture, characteristic of the early childhood. The objective of this study is to determine the incidence and current diagnosis and management of this disorder. Patients and methods: A retrospective study was conducted on a sample of patients aged 0-3 years diagnosed with a toddler's fracture in a tertiary hospital between years 2013 and 2017. Results: A total of 53 patients were registered (10.6 cases per year). The median age was 2 years, with a slight male predominance. The initial radiograph was normal in 24.5% of patients. With the initial approach, 69.8% of patients were diagnosed with fracture, 11.3% with suspected fracture, and 18.9% with contusion. A follow-up was required in 22% required a control test, using radiographs in 10 patients (pathological 90%), and ultrasound in 5 (pathological 80%, 3 of them with normal initial radiography). The large majority (80.8%) of the patients were immobilised with a cast, while flexible immobilisation or non-immobilisation was used in 19.2%. Complications were found in a 21.4% of patients immobilised with splint, mainly skin injuries (19%). These were more frequent in this group than in those that were not immobilised (21.4% vs. 0%, P = .006); with no significant differences in time to weight-bearing. Conclusions: Radiography has a limited sensitivity for the diagnosis of toddler's fracture. In the group of patients with normal radiography, the use of ultrasound can be helpful to the diagnosis and avoid additional radiation. Even though the most common treatment continues to be immobilisation with a splint, the alternative without rigid immobilisation does not seem to give worse results, even with lower morbidity associated with the treatment.
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- 2020
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161. Current diagnosis and management of toddler's fracture
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Sandra Llorente Pelayo, Juan Rodríguez Fernández, M. Teresa Leonardo Cabello, Mónica Rubio Lorenzo, M. Dolores García Alfaro, and Carmelo Arbona Jiménez
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Fractura de los primeros pasos ,Fractura de tibia ,Diagnóstico ,Manejo terapéutico ,Pediatrics ,RJ1-570 - Abstract
Introduction: Toddler's fracture is an accidental spiral tibial fracture, characteristic of the early childhood. The objective of this study is to determine the incidence and current diagnosis and management of this disorder. Patients and methods: A retrospective study was conducted on a sample of patients aged 0–3 years diagnosed with a toddler's fracture in a tertiary hospital between years 2013 and 2017. Results: A total of 53 patients were registered (10.6 cases per year). The median age was 2 years, with a slight male predominance. The initial radiograph was normal in 24.5% of patients. With the initial approach, 69.8% of patients were diagnosed with fracture, 11.3% with suspected fracture, and 18.9% with contusion. A follow-up was required in 22% through a control test, using radiographs in 10 patients (pathological 90%), and ultrasound in 5 (pathological 80%, 3 of them with normal initial radiography). The large majority (80.8%) of the patients were immobilised with a cast, while flexible immobilisation or non-immobilisation was used in 19.2%. Complications were found in a 21.4% of patients immobilised with splint, mainly skin injuries (19%). These were more frequent in this group than in those that were not immobilised (21.4% vs. 0%, P = .006); with no significant differences in time to weight-bearing. Conclusions: Radiography has a limited sensitivity for the diagnosis of toddler's fracture. In the group of patients with normal radiography, the use of ultrasound can be helpful to the diagnosis and avoid additional radiation. Even though the most common treatment continues to be immobilisation with a splint, the alternative without rigid immobilisation does not seem to give worse results, even with lower morbidity associated with the treatment. Resumen: Introducción: La fractura de los primeros pasos o fractura de toddler es una fractura espiroidea de tibia propia de la primera infancia. El objetivo es analizar su incidencia y el manejo diagnóstico y terapéutico actual. Pacientes y métodos: Estudio descriptivo retrospectivo de los pacientes de 0 a 3 años diagnosticados en un hospital terciario entre los años 2013 y 2017. Resultados: Registrados 53 pacientes (10,6 casos/año), con una mediana de edad de 2 años y ligero predominio masculino. La radiografía inicial resultó normal en el 24,5%. Con la aproximación inicial, el 69,8% de los pacientes se diagnosticaron de fractura, el 11,3% de sospecha de fractura y el 18,9% de contusión. El 22% precisaron prueba de control; 10 radiografía (patológica 90%) y 5 ecografía (patológica 80%, 3 de ellos con radiografía inicial normal). El 80,8% de los pacientes se inmovilizaron con férula frente al 19,2% en los que se realizó inmovilización flexible o no inmovilización. Se encontraron complicaciones en el 21,4% de los pacientes inmovilizados con férula, fundamentalmente úlceras por presión (19%), que fueron más frecuentes en este grupo que en los no inmovilizados (21,4 vs. 0%; p = 0,006), sin diferencias significativas en cuanto a tiempo hasta carga. Conclusiones: La radiografía simple tiene una sensibilidad limitada para el diagnóstico de la fractura de los primeros pasos. En el grupo de pacientes con radiografía normal el uso de ecografía puede contribuir al diagnóstico y a evitar radiación adicional. Aunque el tratamiento más común de esta fractura sigue siendo la inmovilización con férula, la alternativa sin inmovilización rígida no parece obtener peores resultados, incluso parece presentar menor morbilidad asociada al tratamiento.
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- 2020
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162. FORK-seq: replication landscape of the Saccharomyces cerevisiae genome by nanopore sequencing
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Magali Hennion, Jean-Michel Arbona, Laurent Lacroix, Corinne Cruaud, Bertrand Theulot, Benoît Le Tallec, Florence Proux, Xia Wu, Elizaveta Novikova, Stefan Engelen, Arnaud Lemainque, Benjamin Audit, and Olivier Hyrien
- Subjects
DNA replication ,Nanopore sequencing ,Bromodeoxyuridine ,Single-molecule analysis ,S. cerevisiae ,Convolutional neural network ,Biology (General) ,QH301-705.5 ,Genetics ,QH426-470 - Abstract
Abstract Genome replication mapping methods profile cell populations, masking cell-to-cell heterogeneity. Here, we describe FORK-seq, a nanopore sequencing method to map replication of single DNA molecules at 200-nucleotide resolution. By quantifying BrdU incorporation along pulse-chased replication intermediates from Saccharomyces cerevisiae, we orient 58,651 replication tracks reproducing population-based replication directionality profiles and map 4964 and 4485 individual initiation and termination events, respectively. Although most events cluster at known origins and fork merging zones, 9% and 18% of initiation and termination events, respectively, occur at many locations previously missed. Thus, FORK-seq reveals the full extent of cell-to-cell heterogeneity in DNA replication.
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- 2020
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163. From Classical to Modern Computational Approaches to Identify Key Genetic Regulatory Components in Plant Biology
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Juan Manuel Acién, Eva Cañizares, Héctor Candela, Miguel González-Guzmán, and Vicent Arbona
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quantitative trait loci ,metabolomics ,network analysis ,plant breeding ,proteomics ,transcriptomics ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
The selection of plant genotypes with improved productivity and tolerance to environmental constraints has always been a major concern in plant breeding. Classical approaches based on the generation of variability and selection of better phenotypes from large variant collections have improved their efficacy and processivity due to the implementation of molecular biology techniques, particularly genomics, Next Generation Sequencing and other omics such as proteomics and metabolomics. In this regard, the identification of interesting variants before they develop the phenotype trait of interest with molecular markers has advanced the breeding process of new varieties. Moreover, the correlation of phenotype or biochemical traits with gene expression or protein abundance has boosted the identification of potential new regulators of the traits of interest, using a relatively low number of variants. These important breakthrough technologies, built on top of classical approaches, will be improved in the future by including the spatial variable, allowing the identification of gene(s) involved in key processes at the tissue and cell levels.
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- 2023
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164. Deep viral blood metagenomics reveals extensive anellovirus diversity in healthy humans
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Cebriá-Mendoza, María, Arbona, Cristina, Larrea, Luís, Díaz, Wladimiro, Arnau, Vicente, Peña, Carlos, Bou, Juan Vicente, Sanjuán, Rafael, and Cuevas, José M.
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- 2021
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165. Regulatory circuits involving bud dormancy factor PpeDAM6
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Lloret, Alba, Quesada-Traver, Carles, Conejero, Ana, Arbona, Vicent, Gómez-Mena, Concepción, Petri, César, Sánchez-Navarro, Jesús A., Zuriaga, Elena, Leida, Carmen, Badenes, María Luisa, and Ríos, Gabino
- Published
- 2021
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166. COVID‐19 encephalopathy, Bayes rule, and a plea for case–control studies
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Esther Arbona‐Haddad, Ivo W. Tremont‐Lukats, Bhanu Gogia, Prashant K. Rai, and for the Bayesian Neurology Group‐Texas (BNG‐TX)
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2021
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167. Active phlorotannins from seven brown seaweeds commercially harvested in Brittany (France) detected by 1H NMR and in vitro assays: temporal variation and potential valorization in cosmetic applications
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Gager, Leslie, Connan, Solène, Molla, Magali, Couteau, Céline, Arbona, Jean-François, Coiffard, Laurence, Cérantola, Stéphane, and Stiger-Pouvreau, Valérie
- Published
- 2020
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168. Early responses of maize seedlings to Cu stress include sharp decreases in gibberellins and jasmonates in the root apex
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Matayoshi, Carolina L., Pena, Liliana B., Arbona, Vicent, Gómez-Cadenas, Aurelio, and Gallego, Susana M.
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- 2020
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169. Host adaptation and specialization in Tetranychidae mites
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Government of Canada, Ontario Research Fund, Natural Sciences and Engineering Research Council of Canada, Bruinsma, Kristie [0000-0001-7913-7920], Rioja, Cristina [0000-0001-9713-1944], Zhurov, Vladimir [0000-0002-7120-4655], Santamaria, M. Estrella [0000-0003-4999-6227], Arbona, Vicent [0000-0003-2232-106X], Navarro, Marie [0009-0003-8441-3653], Cazaux, Marc [0009-0008-2329-0852], Auger, P. [0000-0002-2671-9561], Migeon, Alain [0000-0003-4041-5158], Wybouw, Nicky [0000-0001-7874-9765], Van Leeuwen, Thomas [0000-0003-4651-830X], Díaz, Isabel [0000-0001-9865-902X], Gómez-Cadenas, Aurelio [0000-0002-4598-2664], Sáenz-Navajas, María-Pilar [0000-0002-0702-4238], Bruinsma, Kristie, Rioja, Cristina, Zhurov, Vladimir, Santamaria, M. Estrella, Arbona, Vicent, Navarro, Marie, Cazaux, Marc, Auger, P., Migeon, Alain, Wybouw, Nicky, Van Leeuwen, Thomas, Díaz, Isabel, Gómez-Cadenas, Aurelio, Grbic, Miodrag, Sáenz-Navajas, María-Pilar, Grbić, Vojislava, Government of Canada, Ontario Research Fund, Natural Sciences and Engineering Research Council of Canada, Bruinsma, Kristie [0000-0001-7913-7920], Rioja, Cristina [0000-0001-9713-1944], Zhurov, Vladimir [0000-0002-7120-4655], Santamaria, M. Estrella [0000-0003-4999-6227], Arbona, Vicent [0000-0003-2232-106X], Navarro, Marie [0009-0003-8441-3653], Cazaux, Marc [0009-0008-2329-0852], Auger, P. [0000-0002-2671-9561], Migeon, Alain [0000-0003-4041-5158], Wybouw, Nicky [0000-0001-7874-9765], Van Leeuwen, Thomas [0000-0003-4651-830X], Díaz, Isabel [0000-0001-9865-902X], Gómez-Cadenas, Aurelio [0000-0002-4598-2664], Sáenz-Navajas, María-Pilar [0000-0002-0702-4238], Bruinsma, Kristie, Rioja, Cristina, Zhurov, Vladimir, Santamaria, M. Estrella, Arbona, Vicent, Navarro, Marie, Cazaux, Marc, Auger, P., Migeon, Alain, Wybouw, Nicky, Van Leeuwen, Thomas, Díaz, Isabel, Gómez-Cadenas, Aurelio, Grbic, Miodrag, Sáenz-Navajas, María-Pilar, and Grbić, Vojislava
- Abstract
Composite generalist herbivores are comprised of host-adapted populations that retain the ability to shift hosts. The degree and overlap of mechanisms used by host-adapted generalist and specialist herbivores to overcome the same host plant defenses are largely unknown. Tetranychidae mites are exceptionally suited to address the relationship between host adaptation and specialization in herbivores as this group harbors closely related species with remarkably different host ranges-an extreme generalist the two-spotted spider mite (Tetranychus urticae Koch [Tu]) and the Solanaceous specialist Tetranychus evansi (Te). Here, we used tomato-adapted two-spotted spider mite (Tu-A) and Te populations to compare mechanisms underlying their host adaptation and specialization. We show that both mites attenuate induced tomato defenses, including protease inhibitors (PIs) that target mite cathepsin L digestive proteases. While Te solely relies on transcriptional attenuation of PI induction, Tu and Tu-A have elevated constitutive activity of cathepsin L proteases, making them less susceptible to plant anti-digestive proteins. Tu-A and Te also rely on detoxification of tomato constitutive defenses. Te uses esterase and P450 activities, while Tu-A depends on the activity of all major detoxification enzymatic classes to disarm tomato defensive compounds to a lesser extent. Thus, even though both Tu-A and Te use similar mechanisms to counteract tomato defenses, Te can better cope with them. This finding is congruent with the ecological and evolutionary times required to establish mite adaptation and specialization states, respectively.
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- 2023
170. Statistical complexity measures as telltale of relevant scales in emergent dynamics of spatial systems
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Arbona, A., Bona, C., Miñano, B., and Plastino, A.
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Condensed Matter - Statistical Mechanics ,Mathematical Physics ,82C21 - Abstract
The definition of complexity through Statistical Complexity Measures (SCM) has recently seen major improvements. Mostly, effort is concentrated in measures on time series. We propose a SCM definition for spatial dynamical systems. Our definition is in line with the trend to combine entropy with measures of structure (such as disequilibrium). We study the behaviour of our definition against the vectorial noise model of Collective Motion. From a global perspective, we show how our SCM is minimal at both the microscale and macroscale, while it reaches a maximum at the ranges that define the mesoscale in this model. From a local perspective, the SCM is minimum both in highly ordered and chaotic areas, while it reaches a maximum at the edges between such areas. These characteristics suggest this is a good candidate for detecting the mesoscale of arbitrary dynamical systems as well as regions where the complexity is maximal in such systems., Comment: 13 pages, 5 figures
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- 2013
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171. The Cognitive Demand of a Gifted Student’s Answers to Geometric Pattern Problems : Analysis of Key Moments in a Pre-algebra Teaching Sequence
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Gutierrez, Angel, Benedicto, Clara, Jaime, Adela, Arbona, Eva, Kaiser, Gabriele, Editor-in-Chief, and Singer, Florence Mihaela, editor
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- 2018
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172. College Stress, Minority Status Stress, Depression, Grades, and Persistence Intentions among Hispanic Female Students: A Mediation Model
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Arbona, Consuelo, Fan, Weihua, and Olvera, Norma
- Abstract
The present study examined the mediating role of depression symptoms in the relation of college stress and minority status stress to cumulative grade point average (GPA) and persistence intentions among Hispanic women (n = 426) enrolled in a 4-year major research public institution. Results of path analyses indicated a strong model-data fit for the proposed model. When controlling for each other, both typical college stress and minority status stress positively predicted depression and, in turn, depression negatively predicted college persistence intentions. Tests of indirect effects revealed that depression mediated the relation of college stress and minority status stress to persistence. No mediation effects were present in the relation of the stress variables to cumulative GPA. Findings suggest that depression symptoms is one of the pathways through which college stress and minority status stress may result in lower levels of persistence intentions and, possibly, dropout behavior among Hispanic college women in 4-year institutions.
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- 2018
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173. A Simflowny-based high-performance 3D code for the generalized induction equation
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Viganò, Daniele, Martínez-Gómez, David, Pons, José A., Palenzuela, Carlos, Carrasco, Federico, Miñano, Borja, Arbona, Antoni, Bona, Carles, and Massó, Joan
- Published
- 2019
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174. Cooperativity in the annealing of DNA origamis
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Arbona, Jean-Michel, Aimé, Jean-Pierre, and Elezgaray, Juan
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Condensed Matter - Mesoscale and Nanoscale Physics ,Physics - Biological Physics ,Quantitative Biology - Biomolecules - Abstract
DNA based nanostructures built on a long single stranded DNA scaffold, known as DNA origamis, offer the possibility to organize various molecules at the nanometer scale in one pot experiments. The folding of the scaffold is guaranteed by the presence of short, single stranded DNA sequences (staples), that hold together separate regions of the scaffold. In this paper, we modelize the annealing-melting properties of these DNA constructions. The model captures important features such as the hysteresis between melting and annealing, as well as the dependence upon the topology of the scaffold. We show that cooperativity between staples is critical to quantitatively explain the folding process of DNA origamis.
- Published
- 2011
175. Insights Into the Mechanisms Implicated in Pinus pinaster Resistance to Pinewood Nematode
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Inês Modesto, Lieven Sterck, Vicent Arbona, Aurelio Gómez-Cadenas, Isabel Carrasquinho, Yves Van de Peer, and Célia M. Miguel
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cell wall lignification ,jasmonate ,maritime pine ,pine wilt disease ,resistance genes ,secondary metabolism ,Plant culture ,SB1-1110 - Abstract
Pine wilt disease (PWD), caused by the plant–parasitic nematode Bursaphelenchus xylophilus, has become a severe environmental problem in the Iberian Peninsula with devastating effects in Pinus pinaster forests. Despite the high levels of this species' susceptibility, previous studies reported heritable resistance in P. pinaster trees. Understanding the basis of this resistance can be of extreme relevance for future programs aiming at reducing the disease impact on P. pinaster forests. In this study, we highlighted the mechanisms possibly involved in P. pinaster resistance to PWD, by comparing the transcriptional changes between resistant and susceptible plants after infection. Our analysis revealed a higher number of differentially expressed genes (DEGs) in resistant plants (1,916) when compared with susceptible plants (1,226). Resistance to PWN is mediated by the induction of the jasmonic acid (JA) defense pathway, secondary metabolism pathways, lignin synthesis, oxidative stress response genes, and resistance genes. Quantification of the acetyl bromide-soluble lignin confirmed a significant increase of cell wall lignification of stem tissues around the inoculation zone in resistant plants. In addition to less lignified cell walls, susceptibility to the pine wood nematode seems associated with the activation of the salicylic acid (SA) defense pathway at 72 hpi, as revealed by the higher SA levels in the tissues of susceptible plants. Cell wall reinforcement and hormone signaling mechanisms seem therefore essential for a resistance response.
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- 2021
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176. Alterations in regulatory T cell subpopulations seen in preterm infants
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Dorsey, Morna, Luciano, AA, Arbona-Ramirez, IM, Ruiz, R, Llorens-Bonilla, BJ, Martinez-Lopez, DG, Funderburg, N, and Dorsey, MJ
- Abstract
Regulatory T cells are a population of CD4+ T cells that play a critical role in peripheral tolerance and control of immune responses to pathogens. The purpose of this study was to measure the percentages of two different regulatory T cells subpopulations,
- Published
- 2014
177. Alterations in regulatory T cell subpopulations seen in preterm infants.
- Author
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Luciano, Angel, Arbona-Ramirez, Ileana, Ruiz, Rene, Llorens-Bonilla, Braulio, Martinez-Lopez, Denise, Funderburg, Nicholas, and Dorsey, Morna
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Adult ,Analgesics ,Anti-Bacterial Agents ,Female ,Fetal Blood ,Flow Cytometry ,Humans ,Infant ,Newborn ,Infant ,Premature ,Magnesium Sulfate ,Male ,Platelet Endothelial Cell Adhesion Molecule-1 ,Premature Birth ,Steroids ,T-Lymphocytes ,Regulatory - Abstract
Regulatory T cells are a population of CD4+ T cells that play a critical role in peripheral tolerance and control of immune responses to pathogens. The purpose of this study was to measure the percentages of two different regulatory T cells subpopulations, identified by the presence or absence of CD31 (Recent thymic emigrants and peripherally induced naïve regulatory T cells), in term and preterm infant cord blood. We report the association of prenatal factors, intrauterine exposure to lipopolysaccharide and inflammation and the percentages of these regulatory T cell subpopulations in term and preterm infants. Cord blood samples were collected from both term and preterm infants and mononuclear cells isolated over a Ficoll-Hypaque cushion. Cells were then stained with fluorochrome-labeled antibodies to characterize regulatory T cell populations and analyzed with multi-color flow cytometry. Cord blood plasma C-reactive protein, and lipopolysaccharide were also measured. Placental pathology was also examined. We report a gestational age-dependent difference in the percentage of total regulatory T cells, in which preterm infants of lower gestational ages have an increased percentage of regulatory T cells. We report the presence of two populations of regulatory T cells (CD31+ and CD31-) in cord blood of term and preterm infants and their association with different maternal and fetal characteristics. Factors associated with differences in the percentage of CD31- Tregs included the use of prenatal antibiotics, steroids and magnesium sulfate. In addition, the percentage of CD31- Tregs was significantly higher in cord blood of preterm pregnancies associated with inflammation and prenatal lipopolysaccharide exposure. The peripheral Treg pool of preterm infants could be altered by prenatal exposure to inflammation and chorioamnionitis; however, the clinical implications of this finding are not yet understood.
- Published
- 2014
178. Le Sentiment de puissance dans la philosophie de Friedrich Nietzsche.
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de Haro Arbona, Ana
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PHILOSOPHERS , *AUTHORS - Abstract
The text is a review of two books. The first one is "Le Sentiment de puissance dans la philosophie de Friedrich Nietzsche" by David Simonin, which analyzes the notion of the feeling of power in Nietzsche's philosophy. The author reconstructs historically this notion and explores its relationship with affectivity and action. The second book is "Política, historia, conciencia" by Eric Voegelin, a compilation of essays and fragments that cover the work of the German philosopher. Both books offer a deep and innovative insight into the topics they address. [Extracted from the article]
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- 2024
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179. DETERMINACIÓN DE LA VIABILIDAD DE UTILIZACIÓN DE REACTOR EXISTENTE EN UNA TEXTILERA PARA LA NEUTRALIZACIÓN DEL AGUA RESIDUAL.
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Arbona Cabrera, Mercedes, Cabrera Estrada, Isabel, Fabelo Falcón, José Antonio, García Hernández, María de los Ángeles, and Quiala Armenteros, Yuniey
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- *
WASTE treatment , *TEXTILE factories , *SEWAGE , *WATER purification , *TEXTILE industry - Abstract
Introduction: In the treatment of waste water at the "Desembarco del Granma" textile factory there is a neutralization tank, which resembles a continuous reactor with agitation. This equipment uses H2SO4, which must be replaced by a chemical agent with a lower impact on the environment. Objective: To determine the viability of using the existing reactor at the "Desembarco del Granma" textile factory for the neutralization of residual water when using CO2. Materials and Methods: Continuous stirred reactors were compared at laboratory and industrial levels, where the criterion of geometric similarity was considered. The Aspen Plus program was used to simulate the industrial reactor, considering the kinetics obtained at the laboratory level. The fluid package selected was the UNIQUAC. Results and Discussion: The speed at the tip of the impeller is the same for both reactors and the relationship between the diameter of the impeller and that of the tank remains practically constant, so there is geometric similarity between the reactors. The pH of the residual water neutralized with CO2 was 7.2, showing adequate neutralization. Conclusions: Geometric similarity was evidenced between continuous stirred reactors at laboratory and industrial levels. The pH of the neutralized wastewater in the industrial reactor, determined by simulation, was 7.2. It was proven, with the use of Aspen Plus, that the textile company's industrial reactor can be used for the wastewater neutralization process when CO2 is used instead of H2SO4. [ABSTRACT FROM AUTHOR]
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- 2024
180. Specific ABA‐independent tomato transcriptome reprogramming under abiotic stress combination.
- Author
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Pardo‐Hernández, Miriam, Arbona, Vicent, Simón, Inmaculada, and Rivero, Rosa M.
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- *
ABIOTIC stress , *ABSCISIC acid , *CLIMATE change adaptation , *TRANSCRIPTOMES , *PLANT regulators , *PLANT adaptation , *DROUGHT tolerance , *PLANT identification - Abstract
SUMMARY: Crops often have to face several abiotic stresses simultaneously, and under these conditions, the plant's response significantly differs from that observed under a single stress. However, up to the present, most of the molecular markers identified for increasing plant stress tolerance have been characterized under single abiotic stresses, which explains the unexpected results found when plants are tested under real field conditions. One important regulator of the plant's responses to abiotic stresses is abscisic acid (ABA). The ABA signaling system engages many stress‐responsive genes, but many others do not respond to ABA treatments. Thus, the ABA‐independent pathway, which is still largely unknown, involves multiple signaling pathways and important molecular components necessary for the plant's adaptation to climate change. In the present study, ABA‐deficient tomato mutants (flacca, flc) were subjected to salinity, heat, or their combination. An in‐depth RNA‐seq analysis revealed that the combination of salinity and heat led to a strong reprogramming of the tomato transcriptome. Thus, of the 685 genes that were specifically regulated under this combination in our flc mutants, 463 genes were regulated by ABA‐independent systems. Among these genes, we identified six transcription factors (TFs) that were significantly regulated, belonging to the R2R3‐MYB family. A protein–protein interaction network showed that the TFs SlMYB50 and SlMYB86 were directly involved in the upregulation of the flavonol biosynthetic pathway‐related genes. One of the most novel findings of the study is the identification of the involvement of some important ABA‐independent TFs in the specific plant response to abiotic stress combination. Considering that ABA levels dramatically change in response to environmental factors, the study of ABA‐independent genes that are specifically regulated under stress combination may provide a remarkable tool for increasing plant resilience to climate change. [ABSTRACT FROM AUTHOR]
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- 2024
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181. Development and characterization of a cell donor registry for virus‐specific T cell manufacture in a blood bank.
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Rudilla, Francesc, Carrasco‐Benso, María Paz, Pasamar, Helena, López‐Montañés, María, Andrés‐Rozas, María, Tomás‐Marín, Maria, Company, Desirée, Moya, Cristina, Larrea, Luis, Guerreiro, Manuel, Barba, Pere, Arbona, Cristina, and Querol, Sergio
- Subjects
T cells ,MANUFACTURING cells ,BLOOD banks ,BLOOD cells ,HLA histocompatibility antigens ,BLOOD groups ,SOMATIC cell nuclear transfer ,ALLELES - Abstract
Adoptive cell therapy using virus‐specific T cells (VST) is a strategy for treating common opportunistic viral infections after transplantation, particularly when these infections do not resolve through antiviral drug therapy. The availability of third‐party healthy donors allows for the immediate use of cells for allogeneic therapy in cases where patients lack an appropriate donor. Here, we present the creation of a cell donor registry of human leukocyte antigen (HLA)‐typed blood donors, REDOCEL, a strategic initiative to ensure the availability of compatible cells for donation when needed. Currently, the registry consists of 597 healthy donors with a median age of 29 years, 54% of whom are women. The most represented blood groups were A positive and O positive, with 36.52% and 34.51%, respectively. Also, donors were screened for cytomegalovirus (CMV) and Epstein–Barr virus (EBV). Almost 65% of donors were CMV‐seropositive, while less than 5% were EBV‐seronegative. Of the CMV‐seropositive donors, 98% were also EBV‐seropositive. High‐resolution HLA‐A, ‐B, ‐C, ‐DRB1 and ‐DQB1 allele and haplotype frequencies were determined in the registry. Prevalent HLA alleles and haplotypes were well represented to ensure donor‐recipient HLA‐matching, including alleles reported to present viral immunodominant epitopes. Since the functional establishment of REDOCEL, in May 2019, 87 effective donations have been collected, and the effective availability of donors with the first call has been greater than 75%. Thus, almost 89% of patients receiving an effective donation had available at least 5/10 HLA‐matched cell donors (HLA‐A, ‐B, ‐C, ‐DRB1, and ‐DQB1). To summarize, based on our experience, a cell donor registry from previously HLA‐typed blood donors is a useful tool for facilitating access to VST therapy. [ABSTRACT FROM AUTHOR]
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- 2024
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182. 2707. Complications of Babesiosis in Immunocompromised and Asplenic/Hyposplenic Patients
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Harris, Courtney E, primary, Kakoullis, Loukas, additional, Aleissa, Muneerah M, additional, Haddad, Esther Arbona, additional, Kim, Andy J, additional, Rooks, Rebecca, additional, Yates, Bridget, additional, Kanwal, Urwah, additional, Izaguirre, Natalie E, additional, Little, Jessica S, additional, Hammond, Sarah P, additional, Montgomery, Mary W, additional, Sherman, Amy C, additional, Maguire, James, additional, Woolley, Ann E, additional, Baden, Lindsey R, additional, and Issa, Nicolas C, additional
- Published
- 2023
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183. Dynamic modes of Notch transcription hubs conferring memory and stochastic activation revealed by live imaging the co-activator Mastermind
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deHaro-Arbona, F Javier, primary, Roussos, Charalambos, additional, Baloul, Sarah, additional, Townson, Jonathan, additional, Gomez-Lamarca, Maria J., additional, and Bray, Sarah, additional
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- 2023
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184. Weight Concern and Body Image Dissatisfaction among Hispanic and African American Women
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Olvera, Norma, primary, Matthews-Ewald, Molly, additional, Zhang, Rongfang, additional, Scherer, Rhonda, additional, Fan, Weihua, additional, and Arbona, Consuelo, additional
- Published
- 2023
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185. F30. MENTAL HEALTH RISK AND RESILIENCE DURING THE COVID-19 PANDEMIC AMONG INDIVIDUALS AT HIGH GENETIC RISK FOR BIPOLAR DISORDER
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Freifeld, Ally, primary, McMahon, Francis J., additional, Besancon, Emily, additional, Kassem, Layla, additional, Hosey, Katherine, additional, Arbona-Lampaya, Alejandro, additional, and D'Amico, Alex, additional
- Published
- 2023
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186. Stomata, a vulnerability in the plant defence against phytophagous mites that ABA can overcome
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Rosa-Diaz, Irene, primary, Rowe, James, additional, Cayuela-Lopez, Ana, additional, Arbona, Vicent, additional, Diaz, Isabel, additional, and Jones, Alexander M, additional
- Published
- 2023
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187. Rationale for combined therapies in severe-to-critical COVID-19 patients
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Gonzaga, Aitor, primary, Andreu, Etelvina, additional, Hernández-Blasco, Luis M., additional, Meseguer, Rut, additional, Al-Akioui-Sanz, Karima, additional, Soria-Juan, Bárbara, additional, Sanjuan-Gimenez, Jose Carlos, additional, Ferreras, Cristina, additional, Tejedo, Juan R., additional, Lopez-Lluch, Guillermo, additional, Goterris, Rosa, additional, Maciá, Loreto, additional, Sempere-Ortells, Jose M., additional, Hmadcha, Abdelkrim, additional, Borobia, Alberto, additional, Vicario, Jose L., additional, Bonora, Ana, additional, Aguilar-Gallardo, Cristobal, additional, Poveda, Jose L., additional, Arbona, Cristina, additional, Alenda, Cristina, additional, Tarín, Fabian, additional, Marco, Francisco M., additional, Merino, Esperanza, additional, Jaime, Francisco, additional, Ferreres, José, additional, Figueira, Juan Carlos, additional, Cañada-Illana, Carlos, additional, Querol, Sergio, additional, Guerreiro, Manuel, additional, Eguizabal, Cristina, additional, Martín-Quirós, Alejandro, additional, Robles-Marhuenda, Ángel, additional, Pérez-Martínez, Antonio, additional, Solano, Carlos, additional, and Soria, Bernat, additional
- Published
- 2023
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188. Assessment of Safety and Biodistribution of AAVrh.10hCLN2 Following Intracisternal Administration in Nonhuman Primates for the Treatment of CLN2 Batten Disease
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De, Bishnu P., primary, Rosenberg, Jonathan B., additional, Selvan, Nithya, additional, Wilson, Isabelle, additional, Yusufzai, Nadir, additional, Greco, Alessandria, additional, Kaminsky, Stephen M., additional, Heier, Linda A., additional, Ricart Arbona, Rodolfo J., additional, Miranda, Ileana C., additional, Monette, Sebastien, additional, Nair, Anju, additional, Khanna, Richie, additional, Crystal, Ronald G., additional, and Sondhi, Dolan, additional
- Published
- 2023
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189. Attenuated accumulation of jasmonates modifies stomatal responses to water deficit
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DeOllas, Carlos, Arbona, Vicent, Gómez-Cadenas, Aurelio, and Dodd, Ian C.
- Published
- 2018
190. CREENCIAS Y EXPECTATIVAS EN EL MÁSTER UNIVERSITARIO DE PROFESORADO DE EDUCACIÓN SECUNDARIA
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Arbona, Anna Devís, primary and Olivares, Eva Morón, additional
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- 2020
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191. Contributors
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Agustí, Manuel, primary, Aleza, Pablo, additional, Alferez, Fernando, additional, Arbona, Vicent, additional, Barry, Graham H., additional, Batuman, Ozgur, additional, Biswas, Manosh Kumar, additional, Boaretto, Rodrigo Marcelli, additional, Bowman, Kim D., additional, Cano, Liliana M., additional, Caruso, Marco, additional, Catara, Vittoria, additional, Cen, Yijing, additional, Colmenero-Flores, José M., additional, Cronje, Paul J.R., additional, Cuenca, Jose, additional, Curk, Franck, additional, da Graça, John V., additional, Deng, Xiuxin, additional, Duran-Vila, Nuria, additional, Dutt, Manjul, additional, Fabroni, Simona, additional, Feng, Shi, additional, Fernandes, Waldir, additional, Freitas-Astúa, Juliana, additional, Froelicher, Yann, additional, Gabriel, Dean, additional, Gao, Zhifeng, additional, Germanà, Maria Antonietta, additional, Gmitter, Frederick G., additional, Gómez-Cadenas, Aurelio, additional, Gottwald, Timothy R., additional, Gravena, Santin, additional, Grosser, Jude W., additional, Grout, Tim G., additional, Hyun, Jae-Wook, additional, Joubert, Johan, additional, Kadyampakeni, Davie M., additional, Kato, Masaya, additional, Kaur, Prabhjot, additional, Krueger, Robert, additional, Lavagi, Irene, additional, Li, Hongye, additional, Licciardello, Concetta, additional, Lopes, Silvio A., additional, Ma, Gang, additional, Ma, Haijie, additional, Mattos, Dirceu, additional, Morgan, Kelly T., additional, Morillon, Raphaël, additional, Oliver, Ana Quiñones, additional, Ollitrault, Patrick, additional, Palou, Lluís, additional, Primo-Millo, Eduardo, additional, Quaggio, Jose Antonio, additional, Rapisarda, Paolo, additional, Ritenour, Mark, additional, Rodrigo, María J., additional, Rokhsar, Daniel S., additional, Rouseff, Russell, additional, Russo, Giuseppe, additional, Sadka, Avi, additional, Shimizu, Tokurou, additional, Smith, Malcolm W., additional, Spreen, Thomas H., additional, Stansly, Philip A., additional, Sugiura, Minoru, additional, Tadeo, Francisco R., additional, Talon, Manuel, additional, Terol, Javier, additional, Urbaneja, Alberto, additional, Vicent, Antonio, additional, Vidalakis, Georgios, additional, Vincent, Christopher, additional, Wang, Nian, additional, Wang, Siyu, additional, Wang, Yu, additional, Wu, Fengnian, additional, Wu, Guohong Albert, additional, Wulff, Nelson A., additional, Yamamoto, Masashi, additional, Yang, Xiaoming, additional, Zacarias, Lorenzo, additional, Zansler, Marisa L., additional, Zhang, Lancui, additional, and Zhou, Changyong, additional
- Published
- 2020
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192. Citrus in changing environments
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Vincent, Christopher, primary, Morillon, Raphaël, additional, Arbona, Vicent, additional, and Gómez-Cadenas, Aurelio, additional
- Published
- 2020
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193. Salinity and water deficit
- Author
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Colmenero-Flores, José M., primary, Arbona, Vicent, additional, Morillon, Raphaël, additional, and Gómez-Cadenas, Aurelio, additional
- Published
- 2020
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194. Examination of Horizontal Transmission of Nippostrongylus brasiliensis in Mice to Assess Biosecurity Risks
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Rebecca J Floyd, Rodolfo J Ricart Arbona, Sebastian E Carrasco, and Neil S Lipman
- Subjects
Animal Science and Zoology - Abstract
Mice are commonly infected with Nippostrongylus brasiliensis (Nb) to study their immune responses. However, biosecurity measures have not been established for housing Nb-infected mice and rats. Transmission reportedly does not occur when infected mice are cohoused with naive mice. To test this, we inoculated female NOD. Cg-Prkdcscid Il2rgtm1Wjl /Sz(NSG;n = 12) and C57BL/6J (B6;n = 12) mice with 750 Nb L3 larvae. These mice were then cohoused with naïve NSG ( n = 24) and B6 ( n = 24) mice (1 infected and 2 naïve mice per cage (24 cages) for 28 d in static microisolation cages that were changed every 14 d. We also did several studies to determine the conditions that favor horizontal transmission. First, we assessed in vitro development to the L3 stage of Nb egg-containing fecal pellets maintained under 4 environmental conditions (dry, moist, soiled bedding, and control). Second, we assessed infection of naïve NSG mice ( n = 9) housed in microisolation cages that contained soiled bedding spiked with infective L3 larvae (10,000/cage). Third, we gavaged NSG mice ( n = 3) with Nb eggs to model the potential for infection after coprophagy. We found that naïve NSG (9 of 24) and B6 (10 of 24) mice cohoused with an infected cagemate passed Nb eggs in feces as early as 1 d after cohousing and intermittently thereafter for varying periods. This shedding was presumably the result of coprophagy because adult worms were not detected in the shedding mice at euthanasia. Although eggs developed in vitro into L3 larvae under moist and control environmental conditions, none of the NSG mice housed in cages with L3 -spiked bedding or gavaged with eggs became infected with Nb. These findings indicate that infectious horizontal transmission does not occur when mice are housed with Nb-shedding cage mates in static microisolation cages with a 14-d cage-changing interval. Results from this study can be used to inform biosecurity practices when working with Nb-infected mice.
- Published
- 2023
195. Effects of Mouse Kidney Parvovirus on Pharmacokinetics of Chemotherapeutics and the Adenine Model of Chronic Kidney Disease
- Author
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Amanda C Ritter, Rodolfo Ricart J Arbona, Robert S Livingston, Sébastien Monette, and Neil S Lipman
- Subjects
General Veterinary ,General Biochemistry, Genetics and Molecular Biology - Abstract
Mouse kidney parvovirus (MKPV) causes inclusion body nephropathy in severely immunocompromised mice and renal interstitial inflammation in immunocompetent mice. Here we sought to determine the effects of MKPV on pre-clinical murine models that depend on renal function. To assess the effects of MKPV infection on the pharmacokinetics of 2 renally excreted chemotherapeutic agents, methotrexate and lenalidomide, we measured drug concentrations in the blood and urine of MKPV-infected or uninfected immunodeficient NOD.Cg-PrkdcscidIl2rgtm1Wjl/SzJ (NSG) and immunocompetent C57BL/6NCrl (B6) female mice. No differences in plasma pharmacokinetics were observed for lenalidomide. However, the AUC of methotrexate was 1.5-fold higher in uninfected NSG mice compared with infected NSG mice, 1.9-fold higher in infected B6 mice compared with uninfected B6 mice, and 4.3-fold higher in uninfected NSG mice compared with uninfected B6 mice. MKPV infection did not significantly affect the renal clearance of either drug. To assess effects of MKPV infection on the adenine diet model of chronic kidney disease, MKPV-infected and uninfected B6 female mice were fed a 0.2% adenine diet, and clinical and histopathologic features of disease were assessed over 8 wk. MKPV infection did not significantly alter urine chemistry results, hemogram findings, or serum concentrations of BUN, creatinine, or symmetric dimethylarginine. However, infection did influence histologic outcomes. As compared with uninfected mice, MKPV-infected mice had more interstitial lymphoplasmacytic infiltrates after 4 and 8 wk of diet consumption and less interstitial fibrosis at week 8. Macrophage infiltrates and renal tubular injury were similar between in infected and uninfected mice. These findings indicate that MKPV infection had minimal effects on the renal excretion of 2 chemotherapeutics and on serum biomarkers of renal function. However, infection significantly influenced two histologic features of the adenine diet model of chronic renal disease. MKPV-free mice are critically important in studies evaluating renal histology as an experimental outcome.
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- 2023
196. An evolutionarily conserved pacemaker role for HCN ion channels in smooth muscle
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Lei Yang, Rodolfo J. Ricart Arbona, Carl S. Smith, Kelly M. Banks, V. Kaye Thomas, Lawrence Palmer, Todd Evans, and Romulo Hurtado
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Physiology - Abstract
Although HCN ion channels are well established to underlie cardiac pacemaker activity, their role in smooth muscle organs remains controversial. HCN expressing cells are localized to renal pelvic smooth muscle (RPSM) pacemaker tissues of the murine upper urinary tract and HCN channel conductance is required for peristalsis. To date, however, the Ih pacemaker current conducted by HCN channels has never been detected in these cells, raising questions on the identity of RPSM pacemakers. Indeed, the RPSM pacemaker mechanisms of the unique multicalyceal upper urinary tract exhibited by humans remains unknown. Here, we developed immunopanning purification protocols and demonstrate that 96% of isolated HCN+ cells exhibit Ih. Single molecule STORM to whole-tissue imaging showed HCN+ cells express single HCN channels on their plasma membrane and integrate into the muscular syncytium. By contrast, PDGFR-α+ cells exhibiting the morphology of ICC gut pacemakers were shown to be vascular mural cells. Translational studies in the homologous human and porcine multicalyceal upper urinary tracts showed that contractions and pacemaker depolarizations originate in proximal calyceal RPSM. Critically, HCN+ cells were shown to integrate into calyceal RPSM pacemaker tissues, and HCN channel block abolished electrical pacemaker activity and peristalsis of the multicalyceal upper urinary tract. Cumulatively, these studies demonstrate that HCN ion channels play a broad, evolutionarily conserved pacemaker role in both cardiac and smooth muscle organs and have implications for channelopathies as putative etiologies of smooth muscle disorders.
- Published
- 2023
197. Pathogen inactivation methods to prevent transfusion‐transmissible arboviruses: A systematic review and meta‐analysis
- Author
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Ángel Giménez‐Richarte, María Isabel Ortiz de Salazar, María‐Paz Giménez‐Richarte, Luís Larrea, Cristina Arbona, Pascual Marco, and José‐Manuel Ramos‐Rincón
- Subjects
Infectious Diseases ,Public Health, Environmental and Occupational Health ,Parasitology - Published
- 2023
198. Mechanical Washing Prevents Transmission of Bacterial, Viral, and Protozoal Murine Pathogens from Cages
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Amanda C Ritter, Rodolfo J Ricart Arbona, Anthony J Mourino, Michael B Palillo, Mert Aydin, James R Fahey, and Neil S Lipman
- Subjects
Animal Science and Zoology - Abstract
Infectious agents have varying susceptibilities to thermal inactivation and/or mechanical removal from cages by the use of heated, pressurized water. In this study, we tested whether 5 specific infectious organisms (Candidatus savagella [segmented filamentous bacterium (SFB)], Helicobacter sp., mouse norovirus (MNV), Tritrichomonas sp., and Entamoeba muris) could survive the cage wash process and still infect naïve mice. These 5 organisms were chosen due to their prevalence in rodent colonies, environmental stability, and/or potential to influence experimental outcomes. Cages that had housed mice shedding all 5 organisms were assigned to 1 of 3 treatment groups: 1) sanitization in a tunnel washer followed by autoclaving (121 °C [250 °F] for 20 min; n = 40 cages); 2) sanitization in a tunnel washer (82 °C [180 °F] for an average of 30 s; n = 40 cages); or 3) control (bedding change only; n = 40 cages). The presence of these agents in the cage was assessed by performing PCR on swabs of the empty soiled cage interior before and after the treatment. In addition, to determine if any residual nucleic acid was infectious, 2 Swiss outbred (J:ARC(S)) female mice were housed for 7 d in cages from each treatment group. The above procedures were then repeated so that every week each pair of J:ARC(S) mice ( n = 10 pairs of mice/treatment group) were housed in another cage that underwent the same treatment; this was done for a total of 4 consecutive, 1-wk-long periods. Swabs collected from soiled cages were PCR-positive for SFB, Helicobacter, MNV, Tritrichomonas, and Entamoeba in 99%, 97%, 39%, 63%, and 73% of the cages tested, respectively. Cages in the tunnel wash group that were PCR-positive for SFB, Helicobacter, Tritrichomonas, and Entamoeba before treatment remained PCR-positive in 8%, 15%, 43%, and 10% of positive cages, respectively. None of the cages from the autoclave group were PCR-positive for any of the agents after treatment. None of the mice housed in cages in either the autoclave or tunnel wash groups became infected with any of the agents. However, 80%, 60%, and 100% of the pairs of mice housed in untreated cages were PCR-positive for SFB, MNV, and Entamoeba, respectively. None of the mice housed in untreated cages were positive for Helicobacter or Tritrichomonas. Our results suggest that nucleic acids from these bacterial and protozoal organisms may remain in cages after mechanical cage washing, but these nucleic acids are not infectious, and autoclaving is not necessary to prevent transmission.
- Published
- 2023
199. Abscisic Acid as an Emerging Modulator of the Responses of Plants to Low Oxygen Conditions
- Author
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Miguel González-Guzmán, Aurelio Gómez-Cadenas, and Vicent Arbona
- Subjects
abscisic acid ,anoxia ,ethylene ,gibberellins ,hypoxia ,nitric oxide ,Plant culture ,SB1-1110 - Abstract
Different environmental and developmental cues involve low oxygen conditions, particularly those associated to abiotic stress conditions. It is widely accepted that plant responses to low oxygen conditions are mainly regulated by ethylene (ET). However, interaction with other hormonal signaling pathways as gibberellins (GAs), auxin (IAA), or nitric oxide (NO) has been well-documented. In this network of interactions, abscisic acid (ABA) has always been present and regarded to as a negative regulator of the development of morphological adaptations to soil flooding: hyponastic growth, adventitious root emergence, or formation of secondary aerenchyma in different plant species. However, recent evidence points toward a positive role of this plant hormone on the modulation of plant responses to hypoxia and, more importantly, on the ability to recover during the post-hypoxic period. In this work, the involvement of ABA as an emerging regulator of plant responses to low oxygen conditions alone or in interaction with other hormones is reviewed and discussed.
- Published
- 2021
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200. Identification of ABA-Mediated Genetic and Metabolic Responses to Soil Flooding in Tomato (Solanum lycopersicum L. Mill)
- Author
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Carlos De Ollas, Miguel González-Guzmán, Zara Pitarch, José Tomás Matus, Héctor Candela, José Luis Rambla, Antonio Granell, Aurelio Gómez-Cadenas, and Vicent Arbona
- Subjects
abscisic acid ,hypoxia ,metabolism ,signaling ,soil flooding ,tomato ,Plant culture ,SB1-1110 - Abstract
Soil flooding is a compound abiotic stress that alters soil properties and limits atmospheric gas diffusion (O2 and CO2) to the roots. The involvement of abscisic acid (ABA) in the regulation of soil flooding-specific genetic and metabolic responses has been scarcely studied despite its key importance as regulator in other abiotic stress conditions. To attain this objective, wild type and ABA-deficient tomatoes were subjected to short-term (24 h) soil waterlogging. After this period, gas exchange parameters were reduced in the wild type but not in ABA-deficient plants that always had higher E and gs. Transcript and metabolite alterations were more intense in waterlogged tissues, with genotype-specific variations. Waterlogging reduced the ABA levels in the roots while inducing PYR/PYL/RCAR ABA receptors and ABA-dependent transcription factor transcripts, of which induction was less pronounced in the ABA-deficient genotype. Ethylene/O2-dependent genetic responses (ERFVIIs, plant anoxia survival responses, and genes involved in the N-degron pathway) were induced in hypoxic tissues independently of the genotype. Interestingly, genes encoding a nitrate reductase and a phytoglobin involved in NO biosynthesis and scavenging and ERFVII stability were induced in waterlogged tissues, but to a lower extent in ABA-deficient tomato. At the metabolic level, flooding-induced accumulation of Ala was enhanced in ABA-deficient lines following a differential accumulation of Glu and Asp in both hypoxic and aerated tissues, supporting their involvement as sources of oxalacetate to feed the tricarboxylic acid cycle in waterlogged tissues and constituting a potential advantage upon long periods of soil waterlogging. The promoter analysis of upregulated genes indicated that the production of oxalacetate from Asp via Asp oxidase, energy processes such as acetyl-CoA, ATP, and starch biosynthesis, and the lignification process were likely subjected to ABA regulation. Taken together, these data indicate that ABA depletion in waterlogged tissues acts as a positive signal, inducing several specific genetic and metabolic responses to soil flooding.
- Published
- 2021
- Full Text
- View/download PDF
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