66 results on '"Óscar González"'
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2. Provoked exercise desaturation in patients with patent foramen ovale, infrequent or underdiagnosed?
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Víctor M. Juárez Olmos, Óscar González-Fernández, Alfonso Jurado Román, Santiago Jiménez Valero, Cristina Contreras Lorenzo, and Almudena Castro Conde
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Medicine - Abstract
To the Editor, The patent oval foramen (PFO) is present in nearly 1 out of every 4 people, and for the vast majority of them, it has no clinical implications.1 In others, however, it can trigger strokes, migraines or the orthostatic decompression or desaturation syndrome (known as platypnea-orthodeoxia syndrome).2 An even rarer presentation of PFO that can occur in the adult age is exercise-induced desaturation, which has been described in very few literature reviews and with a term not fully coined.3,4 This is the case of a 79-year-old woman with a past medical history of hypertension and diabetes referred to the cardiac rehabilitation unit due to dyspnea and poor functional capacity. The patient had previously undergone various tests including transthoracic echocardiography, pulmonary function tests, computed tomography pulmonary angiography, and coronary catheterization, all of which showed no significant findings. The physical examination revealed oxygen saturation levels around 98%, blood test results were normal, and N-terminal pro-brain natriuretic peptide levels, 255 pg/mL. Atthe office, she complained of exertional dyspnea that had just appeared after walking from the waiting room to the office. Then, a pulse oximeter was placed on her, and she was told to go for a walk. Oxygen saturation progressively dropped down to...
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- 2023
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3. Cardiopatías congénitas, ¿cómo prepararnos para el trasplante?: Aspectos quirúrgicos
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Luz Polo López, Álvaro González Rocafort, Bunty Ramchandani Ramchandani, Juvenal Rey Lois, Raúl Sánchez Pérez, María Jesús Lamas Hernández, Tomasa Centella Hernández, Carlos Labrandero de Lera, Óscar González Fernández, and Ángel Aroca Peinado
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Heart transplant ,Congenital heart disease ,ECMO ,Medicine ,Surgery ,RD1-811 - Abstract
Resumen: Introducción y objetivos: La insuficiencia cardíaca congestiva aparece en cardiopatías congénitas (CC) tras agotar los tratamientos convencionales médico-quirúrgicos. En adecuados candidatos, el trasplante cardíaco mejora su calidad y cantidad de vida.Presentamos los resultados a corto-medio plazo de nuestros trasplantes cardíacos en CC durante los últimos 20 años, centrándonos en las modificaciones técnicas que requiere el trasplante. Material y métodos: Revisión retrospectiva de 44 pacientes con CC trasplantados durante 2001-2021 en nuestro centro especializado en CC. Estudio estadístico: SPSS-15.0. Resultados: Edad mediana, 17,5 años (RIC: 3,2-40,6); 22 niños y 22 adultos. Tienen cirugías previas el 93% y asistencia ventricular previa el 25%. Diagnósticos iniciales más frecuentes: ventrículo único (45%) y trasposición de grandes vasos (20%).Trasplante bicavo 43 (98%), biatrial 1 (2%). Técnicas quirúrgicas adicionales requeridas con más frecuencia: retirada de material protésico (marcapasos-desfibriladores-asistencia ventricular-stents) y reconstrucción de ramas pulmonares. Mediana de tiempos de circulación extracorpórea 208 min (RIC: 160-245), e isquemia del órgano 271 min (RIC: 220-302).Mortalidad hospitalaria, 9 (20%). Las cirugías previas (p = 0,01), el ECMO (p = 0,007) y hemofiltro por fallo renal postoperatorios (p = 0,003) asocian mayor mortalidad hospitalaria.Seguimiento mediano 21 meses (RIC: 9-72), 4 fallecimientos tardíos. La supervivencia tras el alta hospitalaria es del 93% al año, 87% a los 3 años y 80% a partir de los 5 años. Conclusiones: El trasplante de pacientes con CC en nuestro entorno especializado tiene buenos resultados. Frecuentemente son reintervenciones que prolongan los tiempos quirúrgicos y requieren modificaciones técnicas.Las cirugías previas y la necesidad de ECMO o hemofiltro en el postoperatorio inmediato asocian significativamente una mayor mortalidad al trasplante de CC. La supervivencia tras el alta hospitalaria es favorable. Abstract: Introduction and objectives: Congestive heart failure develops in congenital heart disease (CHD) after failure of conventional medical-surgical treatments. In suitable candidates, heart transplantation improves their quality and quantity of life.We present our heart transplants in CHD performed in the last 20 years, focusing on technical modifications required, and transplant short-medium-term results. Material and methods: Retrospective analysis of 44 patients with CHD transplanted during 2001-2021 in our specialized CHD hospital. Statistical study: SPSS-15.0. Results: Median age 17.5 years (IQR: 3.2-40.6), 22 children and 22 adults. Previous surgeries: 93% and mechanical circulatory support: 25%. Most frequent initial diagnoses: single ventricle-45%, and transposition of the great vessels-20%.Transplant was bicaval: 43 (98%), biatrial: 1 (2%). Additional surgical techniques needed more frequently: removal of prosthetic material (pacemakers-defibrillators-ventricular assist-stents) and reconstruction of pulmonary arteries. Median cardiopulmonary bypass time: 208 min (IQR: 160-245), and heart ischemia 271 min (IQR: 220-302).Inhospital mortality: 9 (20%). Previous surgeries (p = 0.01), postoperative ECMO (p = 0.007) and hemofiltration for acute renal failure (p = 0.003) are statistically associated with inhospital mortality.Median follow-up: 21 months (IQR: 9-72), 4 late deaths. Survival after hospital discharge is 93% at 1 year, 87% at 3 years, and 80% after 5 years. Conclusions: Transplantation of patients with CHD with our multidisciplinary approach in a specialized setting has good results. Reoperations that prolong surgical times and transplant with technical modifications are frequent.Previous surgeries, postoperative need of ECMO or hemofiltration are significantly associated with higher inhospital mortality in these patients. Survival after hospital discharge is favourable.
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- 2022
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4. Establishment of a fish model to study gas-bubble lesions
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Alicia Velázquez-Wallraf, Antonio Fernández, María José Caballero, Marina Arregui, Óscar González Díaz, Mónica B. Betancor, and Yara Bernaldo de Quirós
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Medicine ,Science - Abstract
Abstract Decompression sickness (DCS) is a clinical syndrome caused by the formation of systemic intravascular and extravascular gas bubbles. The presence of these bubbles in blood vessels is known as gas embolism. DCS has been described in humans and animals such as sea turtles and cetaceans. To delve deeper into DCS, experimental models in terrestrial mammals subjected to compression/decompression in a hyperbaric chamber have been used. Fish can suffer from gas bubble disease (GBD), characterized by the formation of intravascular and extravascular systemic gas bubbles, similarly to that observed in DCS. Given these similarities and the fact that fish develop this disease naturally in supersaturated water, they could be used as an alternative experimental model for the study of the pathophysiological aspect of gas bubbles. The objective of this study was to obtain a reproducible model for GBD in fish by an engineering system and a complete pathological study, validating this model for the study of the physiopathology of gas related lesions in DCS. A massive and severe GBD was achieved by exposing the fish for 18 h to TDG values of 108–109%, characterized by the presence of severe hemorrhages and the visualization of massive quantities of macroscopic and microscopic gas bubbles, systemically distributed, circulating through different large vessels of experimental fish. These pathological findings were the same as those described in small mammals for the study of explosive DCS by hyperbaric chamber, validating the translational usefulness of this first fish model to study the gas-bubbles lesions associated to DCS from a pathological standpoint.
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- 2022
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5. Integrated in silico MS-based phosphoproteomics and network enrichment analysis of RASopathy proteins
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Javier-Fernando Montero-Bullón, Óscar González-Velasco, María Isidoro-García, and Jesus Lacal
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Phosphoproteomics ,Interactomics ,RASopathies ,Neurofibromatosis ,Noonan syndrome ,Mass spectrometry ,Medicine - Abstract
Abstract Background RASopathies are a group of syndromes showing clinical overlap caused by mutations in genes affecting the RAS-MAPK pathway. Consequent disruption on cellular signaling leads and is driven by phosphoproteome remodeling. However, we still lack a comprehensive picture of the different key players and altered downstream effectors. Methods An in silico interactome of RASopathy proteins was generated using pathway enrichment analysis/STRING tool, including identification of main hub proteins. We also integrated phosphoproteomic and immunoblotting studies using previous published information on RASopathy proteins and their neighbors in the context of RASopathy syndromes. Data from Phosphosite database ( www.phosphosite.org ) was collected in order to obtain the potential phosphosites subjected to regulation in the 27 causative RASopathy proteins. We compiled a dataset of dysregulated phosphosites in RASopathies, searched for commonalities between syndromes in harmonized data, and analyzed the role of phosphorylation in the syndromes by the identification of key players between the causative RASopathy proteins and the associated interactome. Results In this study, we provide a curated data set of 27 causative RASopathy genes, identify up to 511 protein–protein associations using pathway enrichment analysis/STRING tool, and identify 12 nodes as main hub proteins. We found that a large group of proteins contain tyrosine residues and their biological processes include but are not limited to the nervous system. Harmonizing published RASopathy phosphoproteomic and immunoblotting studies we identified a total of 147 phosphosites with increased phosphorylation, whereas 47 have reduced phosphorylation. The PKB signaling pathway is the most represented among the dysregulated phosphoproteins within the RASopathy proteins and their neighbors, followed by phosphoproteins implicated in the regulation of cell proliferation and the MAPK pathway. Conclusions This work illustrates the complex network underlying the RASopathies and the potential of phosphoproteomics for dissecting the molecular mechanisms in these syndromes. A combined study of associated genes, their interactome and phosphorylation events in RASopathies, elucidates key players and mechanisms to direct future research, diagnosis and therapeutic windows.
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- 2021
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6. Influence of genetic background and dietary oleic acid on gut microbiota composition in Duroc and Iberian pigs.
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Adrián López-García, Rita Benítez, Yolanda Núñez, Emilio Gómez-Izquierdo, Eduardo de Mercado, Juan M García-Casco, Óscar González-Recio, Clemente López-Bote, Jordi Estellé, and Cristina Óvilo
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Medicine ,Science - Abstract
BackgroundPhenotypic variability for productive and meat quality traits has been largely studied in Iberian pigs, especially in genetic selection and nutritional experiments. Complex interactions among genetic background, diet composition and gut microbiota hinder the correct assessment of each factor's contribution on phenotypes. In order to disentangle these interactions, we evaluated changes in gut microbiota composition comparing 48 Iberian and Duroc pigs fed diets with different energy source (standard diet with carbohydrates vs sunflower oil-enriched diet with high oleic acid content).ResultsA higher richness was observed for Iberian pigs (p < 0.05) and compositional analysis was applied for beta-diversity, differential abundance and pairwise log-ratio analyses. We found significant differences in overall microbiota composition between breeds, and also between diets inside breeds, to a lesser extent. Differential abundance analysis revealed that Duroc animals have more proportion of Actinobacteria and Prevotella, while Iberian replace those microorganisms with other more variable taxa. According to dietary differences, high-oleic fed animals were richer in Prevotella. We also found microbial ratios capable of separating animals by breeds and diets, mostly related to Actinobacteria.ConclusionThis study reveals that both genetic background and diet composition might have a relevant impact in gut microbiota composition. The application of compositional data analysis has facilitated the identification of microorganisms and ratios as possibly related to metabolic changes due to genetic background and, to a lower extent, to dietary changes. This may lead to a relevant progress in the knowledge of interactions between pig genetics, environment and gut microbiota.
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- 2021
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7. CONTROL Y VIGILANCIA EN FRONTERAS. PAPEL DE SANIDAD EXTERIOR DURANTE LAS FASES DE CONTENCIÓN DE LA PANDEMIA (H1 N1) 2009
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Miguel Dávila Cornejo, Carmen Aramburu Celigueta, Susana Morte Esteban, Inmaculada Vera Gil, Mª José Iglesias García, and Óscar González Gutiérrez-Solana
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Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Los controles sanitarios en fronteras, establecidos con el objetivo de retrasar la entrada del virus pandémico en España, constituyen una de las actividades propias de las fases de contención de la enfermedad. Su puesta en práctica como estrategia de salud pública en respuesta a epidemias es responsabilidad de la Dirección General de Salud Pública y Sanidad Exterior del Ministerio de Sanidad y Política Social, a través de la Subdirección General de Sanidad Exterior, y para ello se requiere una actuación coordinada con otros organismos implicados. Este trabajo tiene como finalidad describir las actuaciones realizadas en los aeropuertos internacionales durante dichas fases, así como evaluar su efectividad en la consecución del objetivo para el que fueron diseñadas. En este sentido, se establece una hipótesis que trata de explicar cómo las medidas adoptadas por Sanidad Exterior y la colaboración con los Servicios de Vigilancia Epidemiológica de las Comunidades Autónomas podrían haber contribuido a retrasar la propagación del virus en nuestro país. Se destaca la necesidad de consolidar los sistemas de vigilancia en fronteras potenciando dicha colaboración, así como la importancia de diseñar una estrategia clara de comunicación a la población en estos escenarios, que debe acompañar a la implementación de las demás medidas para evitar situaciones de incertidumbre.
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- 2010
8. Corrigendum to 'Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion'
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Óscar González-Espasandín, Teresa J. Leo, and Emilio Navarro-Arévalo
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Technology ,Medicine ,Science - Published
- 2015
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9. Effects of GA3 Pregerminative Treatment on Gentiana lutea L. var. aurantiaca Germination and Seedlings Morphology
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Óscar González-López and Pedro A. Casquero
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Technology ,Medicine ,Science - Abstract
Gentiana lutea L. is widely used in bitter beverages and in medicine; Gentianae Radix is the pharmaceutical name of the root of G. lutea. These uses have generated a high demand. The wild populations of Gentiana lutea var. aurantiaca (M. Laínz) M. Laínz have been decimated; it is necessary to establish guidelines for its cultivation. Gentian as most alpine species has dormant seeds. Dormancy can be removed by cold and by means of a gibberellic acid (GA3) treatment. However, cold treatments produce low germination percentages and GA3 treatments may produce off-type seedlings. So, the objective was to determine, for the first time, the presowing treatments that allow high germination rate and good seedling morphology. The best pregerminative doses of GA3 to break seed dormancy were 100, 500, and 1000 ppm, while the best doses to optimize the seedling habit were 50 and 100 ppm. This study provides, for the first time, a 100 ppm GA3 dose that led to a high germination rate and good seedling morphology, as the starting point for gentian regular cultivation.
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- 2014
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10. Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion
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Óscar González-Espasandín, Teresa J. Leo, and Emilio Navarro-Arévalo
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Technology ,Medicine ,Science - Abstract
The possibility of implementing fuel cell technology in Unmanned Aerial Vehicle (UAV) propulsion systems is considered. Potential advantages of the Proton Exchange Membrane or Polymer Electrolyte Membrane (PEMFC) and Direct Methanol Fuel Cells (DMFC), their fuels (hydrogen and methanol), and their storage systems are revised from technical and environmental standpoints. Some operating commercial applications are described. Main constraints for these kinds of fuel cells are analyzed in order to elucidate the viability of future developments. Since the low power density is the main problem of fuel cells, hybridization with electric batteries, necessary in most cases, is also explored.
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- 2014
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11. Tratamiento a distancia de la insuficiencia cardiaca mediante el algoritmo HeartLogic. Registro RE-HEART
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Juan Gabriel Martínez, Rocío Cózar León, Nuria Rivas Gándara, Paula Sánchez-Aguilera, Nicasio Pérez Castellano, Ana B. Méndez Fernández, Olga Medina Moreno, Luis González Torres, Javier de Juan Bagudá, Óscar González Fernández, Pablo Ramos Ruiz, Carlos de Diego Rus, Virgilio Martínez Mateo, como representantes del grupo del registro Re-Heart, Juan F. Jimenez, Natalia Marrero Negrín, Josebe Goirigolzarri Artaza, Alfonso Macías Gallego, María F. Arcocha Torres, Gonzalo Luis Alonso Salinas, Juan José Gavira Gómez, Marta Pachón Iglesias, David Cordero Pereda, Manuel J. Fernández-Anguita, Inés Madrazo Delgado, Fernando Arribas Ynsaurriaga, Ignacio García Bolao, Rafael Salguero Bodes, Laura Peña Conde, Ernesto Díaz Infante, José Manuel López, Beatriz Díaz Molina, and Vanessa Escolar Pérez
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business.industry ,Medicine ,Cardiology and Cardiovascular Medicine ,business ,Humanities - Abstract
Resumen Introduccion y objetivos HeartLogic es un algoritmo multiparametrico incorporado a desfibriladores automaticos implantables (DAI). La alerta asociada predice descompensaciones de insuficiencia cardiaca (IC). Nuestro objetivo es analizar la asociacion entre alertas y eventos clinicos bajo un protocolo de seguimiento comun en un registro multicentrico. Metodos Se evaluaron la fase 1 (investigadores ciegos al estado de la alerta) y las fases 2 y 3 (tras la activacion de HeartLogic, segun practica local y un protocolo comun respectivamente). Resultados Se incluyo a 288 pacientes en 15 centros. En fase 1, tras una media de observacion de 10 meses, hubo 73 alertas (0,72 alertas/paciente-ano), con 8 hospitalizaciones y 2 visitas a urgencias por IC (0,10 eventos/ano-paciente). No hubo hospitalizaciones fuera del periodo de alerta. Las fases activas tuvieron una media de seguimiento de 16 (IC95%, 15-22) meses, con 277 alertas (0,89 alertas/ano-paciente); 33 se asociaron con hospitalizaciones o muerte por IC, 46 con descompensaciones menores y 78 con otros eventos. La tasa de alertas inexplicables fue 0,39/ano-paciente. Fuera del estado de alerta solo hubo una hospitalizacion y una descompensacion menor. La mayoria de las alertas (el 82% en fase 2 y el 81% en fase 3; p = 0,861) se gestionaron a distancia. La mediana de NT-proBNP fue superior en estado de alerta que fuera de el (7.378 frente a 1.210 pg/ml; p Conclusiones El indice HeartLogic se asocio con descompensaciones de IC y otros eventos relevantes, con baja tasa de alertas inexplicables. Un protocolo estandarizado permitio detectar y actuar a distancia con seguridad sobre las alertas.
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- 2022
12. Water‐soluble polymers in agriculture: xanthan gum as eco‐friendly alternative to synthetics
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Teresa Berninger, Natalie Dietz, and Óscar González López
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Materials science ,Polymers ,Bioengineering ,Polysaccharide ,Applied Microbiology and Biotechnology ,Biochemistry ,medicine ,Water soluble polymers ,chemistry.chemical_classification ,business.industry ,Polysaccharides, Bacterial ,Water ,Agriculture ,Polymer ,Pulp and paper industry ,Environmentally friendly ,chemistry ,Homogeneous ,Microbial polysaccharides ,business ,Plastics ,Xanthan gum ,TP248.13-248.65 ,medicine.drug ,Biotechnology - Abstract
Summary Water‐soluble polymers (WSPs) are a versatile group of chemicals used across industries for different purposes such as thickening, stabilizing, adhesion and gelation. Synthetic polymers have tailored characteristics and are chemically homogeneous, whereas plant‐derived biopolymers vary more widely in their specifications and are chemically heterogeneous. Between both sources, microbial polysaccharides are an advantageous compromise. They combine naturalness with defined material properties, precisely controlled by optimizing strain selection, fermentation operational parameters and downstream processes. The relevance of such bio‐based and biodegradable materials is rising due to increasing environmental awareness of consumers and a tightening regulatory framework, causing both solid and water‐soluble synthetic polymers, also termed ‘microplastics’, to have come under scrutiny. Xanthan gum is the most important microbial polysaccharide in terms of production volume and diversity of applications, and available as different grades with specific properties. In this review, we will focus on the applicability of xanthan gum in agriculture (drift control, encapsulation and soil improvement), considering its potential to replace traditionally used synthetic WSPs. As a spray adjuvant, xanthan gum prevents the formation of driftable fine droplets and shows particular resistance to mechanical shear. Xanthan gum as a component in encapsulated formulations modifies release properties or provides additional protection to encapsulated agents. In geotechnical engineering, soil amended with xanthan gum has proven to increase water retention, reduce water evaporation, percolation and soil erosion – topics of high relevance in the agriculture of the 21st century. Finally, hands‐on formulation tips are provided to facilitate exploiting the full potential of xanthan gum in diverse agricultural applications and thus providing sustainable solutions.
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- 2021
13. Parathormone levels add prognostic ability to N‐terminal pro‐brain natriuretic peptide in stable coronary patients
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Jesús Egido, Carlos Gutiérrez-Landaluce, Juan Martínez-Milla, Luis Alonso-Pulpón, Marta López-Castillo, Ignacio Mahillo-Fernández, Lorenzo López Bescós, Ana Huelmos, Carmen Cristóbal, Óscar González-Lorenzo, José Luis Martín-Ventura, José Tuñón, María Luisa González-Casaus, Emilio González-Parra, Nieves Tarín, Álvaro Aceña, Ana Maria Pello, Óscar Lorenzo, Luis Miguel Blanco-Colio, Joaquín Alonso, and UAM. Departamento de Medicina
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Fibroblast growth factor 23 ,medicine.medical_specialty ,Acute coronary syndrome ,Mineral metabolism ,Medicina ,medicine.drug_class ,Renal function ,030204 cardiovascular system & hematology ,Gastroenterology ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Original Research Articles ,Internal medicine ,Fibroblast growth factor‐23 ,Natriuretic Peptide, Brain ,Troponin I ,medicine ,Natriuretic peptide ,Humans ,Diseases of the circulatory (Cardiovascular) system ,Original Research Article ,030212 general & internal medicine ,Klotho ,Aged ,business.industry ,Middle Aged ,Prognosis ,medicine.disease ,Parathormone ,Peptide Fragments ,Parathyroid Hormone ,Heart failure ,RC666-701 ,Fibroblast growth factor-23 ,Cardiology and Cardiovascular Medicine ,business - Abstract
Aims: There are controversial data on the ability of the components of mineral metabolism (vitamin D, phosphate, parathormone [PTH], fibroblast growth factor-23 [FGF23], and klotho) to predict cardiovascular events. In addition, it is unknown whether they add any prognostic value to other well-known biomarkers. Methods and results: In 969 stable coronary patients, we determined plasma levels of all the aforementioned components of mineral metabolism with a complete set of clinical and biochemical variables, including N-terminal pro-brain natriuretic peptide (NT-proBNP), high-sensitivity troponin I (hs-TnI), and high-sensitivity C-reactive protein. Secondary outcomes were ischaemic events (any acute coronary syndrome, stroke, or transient ischaemic attack) and heart failure or death. The primary outcome was a composite of the secondary outcomes. Median follow-up was 5.39 years. Age was 60 (52–72) years. Median glomerular filtration rate was 80.4 (65.3–93.1) mL/min/1.73 m2. One-hundred and eighty-five patients developed the primary outcome. FGF23, PTH, hs-TnI, and NT-proBNP were directly related with the primary outcome on univariate Cox analysis, while Klotho and calcidiol were inversely related. On multivariate analysis, only PTH (HR 1.058 [CI 1.021–1.097]; P = 0.002) and NT-proBNP (HR 1.020 [CI 1.012–1.028]; P 85.5 RU/mL) (P, This work was supported by grants from Instituto de Salud Carlos III (ISCIII) and Fondos FEDER (Fondo Europeo de Desarrollo Regional) European Union (PI05/0451, PI14/1567, PI17/01615, and PI17/01495); Spanish Society of Cardiology; Spanish Society of Arteriosclerosis; RECAVA (Red Temática de Investigación Cooperativa en Enfermedades Cardiovasculares) (RD06/0014/0035); and Instituto de Salud Carlos III FEDER (FJD biobank: RD09/0076/00101). The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.
- Published
- 2021
14. Posteromedial Hypothalamic Deep Brain Stimulation for Refractory Aggressiveness in a Patient With Weaver Syndrome: Clinical, Technical Report and Operative Video
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Óscar González Aduna, Elena Ezquiaga Terrazas, José Luis Ayuso-Mateos, Alvaro Bocos Portillo, Cristina V. Torres, Marta Navas García, Guillermo Blasco García de Andoain, Jesús Pastor, and Lorena Vega-Zelaya
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Male ,Pediatrics ,medicine.medical_specialty ,Deep brain stimulation ,Deep Brain Stimulation ,AcademicSubjects/MED00930 ,medicine.medical_treatment ,Hypothalamus ,Pharmacological treatment ,Craniofacial Abnormalities ,03 medical and health sciences ,0302 clinical medicine ,Refractory ,Intellectual disability ,Congenital Hypothyroidism ,medicine ,Humans ,Effective treatment ,Abnormalities, Multiple ,030304 developmental biology ,Weaver syndrome ,0303 health sciences ,business.industry ,Neuros/16 ,Genetic disorder ,medicine.disease ,Aggression ,Commentary ,Surgery ,Neurology (clinical) ,business ,Hand Deformities, Congenital ,030217 neurology & neurosurgery ,Psychosurgery - Abstract
Background and importance Deep brain stimulation of the posteromedial hypothalamus (PMH DBS) appears to be an effective treatment for drug-resistant aggressiveness. Weaver syndrome (WS) is a rare genetic disorder in which patients develop some degree of intellectual disability and rarely severe behavioral alterations that may benefit from this procedure. Clinical presentation We present the case of a 26-yr-old man diagnosed with WS presenting with uncontrollable self and heteroaggressiveness and disruptive behavior refractory to pharmacological treatment and under severe physical and mechanical restraining measures. The patient was successfully treated with bilateral PMH DBS resulting in affective improvement, greater tolerance for signs of affection, regularization in his sleep pattern and appetite disturbances at 12-mo follow-up. A detailed description and video of the procedure are presented, and a review of the clinical characteristics of WS and the utility and benefits of PMH DBS for refractory aggressiveness are reviewed. Conclusion To our knowledge, this is the first case of refractory aggressiveness described in WS as well as the first patient with WS successfully treated with PMH DBS.
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- 2021
15. Statin use is associated with reduced mortality after respiratory viral infection
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Óscar González-Lorenzo, Ana Rodriguez, Ana María Pello-Lázaro, Borja Ibanez, Álvaro Aceña, José Tuñón, Andrea María Kallmeyer Mayor, Maria De Los Angeles Zambrano Chacon, Ricardo Fernández Roblas, Juan Antonio Franco-Peláez, Felipe Villar Álvarez, Laura Esteban-Lucía, Camila Sofia García-Talavera, and Luis Nieto Roca
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Statin ,medicine.drug_class ,Population ,lcsh:Medicine ,Disease ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,cardiovascular diseases ,030212 general & internal medicine ,education ,education.field_of_study ,business.industry ,Proportional hazards model ,Respiratory viral infection ,lcsh:R ,nutritional and metabolic diseases ,Retrospective cohort study ,Original Articles ,Statin treatment ,Respiratory Infections ,lipids (amino acids, peptides, and proteins) ,Observational study ,business - Abstract
Background Several studies suggest that statins, besides reducing cardiovascular disease, have anti-inflammatory properties which might provide a benefit in downregulating the immune response after a respiratory viral infection (RVI) and, hence, decreasing subsequent complications. We aim to analyse the effect of statins on mortality after RVI. Methods A single-centre, observational and retrospective study was carried out including all adult patients with a RVI confirmed by PCR tests from October 2, 2017 to May 20, 2018. Patients were divided between statin users and non-statin users and followed-up for 1 year, and all causes of death were recorded. In order to analyse the effect of statin treatment on mortality after RVI we planned two different approaches, a multivariate Cox regression model with the overall population and a univariate Cox model with a propensity-score matched population. Results We included 448 patients, 154 (34.4%) of whom were under statin treatment. Statin users had a worse clinical profile (older population with more comorbidities). During the 1-year follow-up, 67 patients died, 17 (11.0%) in the statin group and 50 (17.1%) in the non-statin group. Multivariate Cox analysis showed that statins were associated with mortality benefit (HR 0.47, 95% CI 0.26–0.83; p=0.01). In a matched population (101 statins users and 101 non-statins users) statins also remained associated with mortality benefit (HR 0.32, 95% CI 0.14–0.72; p=0.006). Differences were mainly driven by non-cardiovascular mortality (HR 0.31, 95% CI 0.13–0.73; p=0.004). Conclusions Chronic statin treatment was associated with reduced 1-year mortality in patients with laboratory-confirmed RVI. Further studies are needed to determine the exact role of statin therapy after RVI., Statin treatment is associated with reduced 1-year mortality after respiratory viral infections, despite the higher risk profile of patients on statins. Statins seem a good candidate to be tested during the current global pandemic. https://bit.ly/36t0tDh
- Published
- 2020
16. Periprocedural Direct Oral Anticoagulant Management: The RA-ACOD Prospective, Multicenter Real-World Registry
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Blanca Tapia, Patricia Guilabert, Vanessa Suárez, Óscar González-Larrocha, Cristina Martínez-Escribano, Javier F. Sanz, Elena Duro, Consuelo García-Cebrián, Antoni Pérez, Juan-Carlos Álvarez, Juan V. Llau, Manuel Llácer, Ángeles M. Villanueva, A. Gómez-Luque, Concepción Cassinello, Sergi Sabaté, Julia Martín, Esperanza Fernández-Bañuls, Marta Barquero, R. Ferrandis, Beatriz Castaño, Salomé M. Matoses, Nuria Montón, Pilar Sierra, Francisco Cañadillas Hidalgo, Luís-Miguel Torres, Rubén Rodríguez, and Gabriel Yanes
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lcsh:Diseases of the circulatory (Cardiovascular) system ,medicine.medical_specialty ,Rivaroxaban ,medicine.drug_class ,business.industry ,anticoagulant ,perioperative period ,Anticoagulant ,apixaban ,Perioperative ,Odds ratio ,dabigatran etexilate ,Confidence interval ,Dabigatran ,chemistry.chemical_compound ,chemistry ,lcsh:RC666-701 ,Edoxaban ,Internal medicine ,medicine ,Original Article ,Apixaban ,business ,rivaroxaban ,medicine.drug - Abstract
Introduction There is scarce real-world experience regarding direct oral anticoagulants (DOACs) perioperative management. No study before has linked bridging therapy or DOAC-free time (pre-plus postoperative time without DOAC) with outcome. The aim of this study was to investigate real-world management and outcomes. Methods RA-ACOD is a prospective, observational, multicenter registry of adult patients on DOAC treatment requiring surgery. Primary outcomes were thrombotic and hemorrhagic complications. Follow-up was immediate postoperative (24–48 hours) and 30 days. Statistics were performed using a univariate and multivariate analysis. Data are presented as odds ratios (ORs [95% confidence interval]). Results From 26 Spanish hospitals, 901 patients were analyzed (53.5% major surgeries): 322 on apixaban, 304 on rivaroxaban, 267 on dabigatran, 8 on edoxaban. Fourteen (1.6%) patients suffered a thrombotic event, related to preoperative DOAC withdrawal (OR: 1.57 [1.03–2.4]) and DOAC-free time longer than 6 days (OR: 5.42 [1.18–26]). Minor bleeding events were described in 76 (8.4%) patients, with higher incidence for dabigatran (12.7%) versus other DOACs (6.6%). Major bleeding events occurred in 17 (1.9%) patients. Bridging therapy was used in 315 (35%) patients. It was associated with minor (OR: 2.57 [1.3–5.07]) and major (OR: 4.2 [1.4–12.3]) bleeding events, without decreasing thrombotic events. Conclusion This study offers real-world data on perioperative DOAC management and outcomes in a large prospective sample size to date with a high percentage of major surgery. Short-term preprocedural DOAC interruption depending on the drug, hemorrhagic risk, and renal function, without bridging therapy and a reduced DOAC-free time, seems the safest practice.
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- 2020
17. Long term clinical outcomes in survivors after out-of-hospital cardiac arrest
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Laura Rodríguez Sotelo, Laura Peña Conde, Esteban López-de-Sá, Juan R. Rey, Juan Caro-Codón, Jaime Fernández de Bobadilla, Isabel Antorrena Miranda, Ángel M. Iniesta, Jose Lopez-Sendon, José Ruiz Cantador, Óscar González Fernández, Sandra Rosillo, and Eduardo Armada
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Adult ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Targeted temperature management ,Out of hospital cardiac arrest ,Cohort Studies ,03 medical and health sciences ,High morbidity ,0302 clinical medicine ,Internal Medicine ,medicine ,Hospital discharge ,Humans ,Survivors ,030212 general & internal medicine ,Time to onset ,Aged ,Retrospective Studies ,Ejection fraction ,Proportional hazards model ,business.industry ,Middle Aged ,Hypothermia ,Cardiopulmonary Resuscitation ,Patient Discharge ,Hospitalization ,Emergency medicine ,medicine.symptom ,business ,Out-of-Hospital Cardiac Arrest - Abstract
Introduction and objectives Information regarding long-term outcomes in patients surviving out-of-hospital cardiac arrest (OHCA) is scarce. Our aim was to study the long-term clinical outcomes of a large cohort of OHCA patients surviving until hospital discharge and to identify predictors of mortality and cardiovascular events. Methods Consecutive OHCA patients admitted in the Acute Cardiac Care Unit who survived at least until hospital discharge between 2007 and 2019 were included. All received therapeutic hypothermia according to the local protocol. Pre- and intra-hospital clinical and analytical variables were analyzed, as well as the clinically relevant events during follow-up. Results A total of 201 patients were included, with a mean age of 57.6 ± 14.2 years, 168 (83.6%) were male. Thirty-six (17.9%) died during a median follow-up of 40.3 months (18.9–69.1), the most frequent causes of death being cardiovascular and neurological, followed by cancer. We calculated a predictive model for mortality during follow-up using Cox regression that included the following variables: poor neurological outcome [HR 3.503 (1.578–7.777)], non-shockable rhythm [HR 2.926 (1.390–6.163)], time to onset of CPR [HR 1.063 (0.997–1.134)], older age [1.036 (1.008–1.064)) and worse ejection fraction at discharge [1.033 (1.009–1.058)]. Conclusions Even though few patients experience recurrent cardiac arrest events, survivors after OHCA face high morbidity and mortality during long-term follow-up. Therefore, they may benefit from multidisciplinary teams providing an integral management and ensuring continuity of care.
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- 2020
18. Calcium channel blockers and beta-blockers could increased mortality of patients with COVID-19
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R Fernandez-Roblas, Óscar González-Lorenzo, A M Venegas Rodriguez, M A Zambrano Chacon, F Villar-Alvarez, Laura Esteban-Lucía, J Tunon, L Maure-Blesa, A Acena Navarro, Juan Antonio Franco-Peláez, M Gonzalez-Rodriguez, A Devesa-Arbiol, Ana María Pello-Lázaro, P Avila-Barahona, and A M Kallmeyer-Mayor
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Coronavirus disease 2019 (COVID-19) ,Surrogate endpoint ,business.industry ,Calcium channel ,Endpoint Determination ,Medicine ,AcademicSubjects/MED00200 ,Pharmacology ,Calcium Channel Blockers ,Cardiology and Cardiovascular Medicine ,Beta (finance) ,business ,Abstract Supplement - Abstract
Background High incidence of cardiovascular events has been described among patients with COVID-19 and since the beginning of the pandemic concerns have been expressed with medical treatments for cardiovascular disease, as they could contribute to the severity of illness in patients with COVID-19. We aim to analyze the effect of chronic treatment with calcium channel blockers and beta-blockers on COVID 19 severity in a Spanish cohort during the 2020 pandemic. Methods Observational study including all consecutive patients (≥40 years old) diagnosed with SARS-CoV-2 through PCR in the microbiology laboratory of our hospital, from March 2nd to 20th 2020. Clinical characteristics and drugs were recorded. The Primary end-point (PE) was all-cause death and the secondary end-point (SE) was the combined of death or the need for orotracheal intubation until 30 days of infection symptoms onset. Results We included 704 patients in our study. Baseline characteristics of the overall cohort can be seen in the table. Median age was 61 years old (IQR 52.9–72.9); 52.7% were female. 34.7% and 12.6% had hypertension and diabetes respectively. After a median follow-up of 111.5 days, 58 patients (8.2%) needed orotracheal intubation and 133 patients (18.9%) died. Secondary endpoint (all-cause death or need for orotracheal intubation) was reached by 164 patients (23.3%). The table described clinical differences between survivors and deceased patients. After multivariate Cox modeling, age, male gender, diabetes, previous lung disease, BMI and the chronic intake of calcium channel blockers (HR 1.74, 95% CI (1.11–2.75), p=0.016) and beta-blockers (HR 1.71, 95% CI (1.07–2.76), p=0.026) were independently related with mortality. Other cardiovascular drugs (Antiplatelets, anticoagulants, diuretics, mineralcorticoid-receptor antagonists, angiotensin-receptor blockers, angiotensin-converting enzyme inhibitors and statins) did not influence survival after SARS-CoV 2 infection (Figure). The secondary outcome was reached by 164 patients (23.3%) and chronic treatment with calcium channel blockers remains as an independent predictor of mortality (HR 1.55, 95% CI (1.01–2.37), p=0.044). Conclusions Chronic treatment with calcium channel blockers and beta-blockers are independent predictors of mortality after SARS-CoV-2 infection. Further studies are needed to confirm these results. Funding Acknowledgement Type of funding sources: None. Description of studied populationOdds-ratio and CI for all-cause death
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- 2021
19. Cardiovascular predictors associated with poor short-term prognosis in patients diagnosed with SARS-CoV-2 in Spain
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R Fernandez-Roblas, L Maure-Blesa, M Gonzalez-Rodriguez, J A Franco Pelaez, Óscar González-Lorenzo, J Tunon, Ana María Pello-Lázaro, A Devesa-Arbiol, A M Venegas Rodriguez, M A Zambrano Chacon, Borja Ibanez, A Acena Navarro, P Avila-Barahona, Laura Esteban-Lucía, and F Villar-Alvarez
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medicine.medical_specialty ,business.industry ,Internal medicine ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,medicine ,In patient ,Cardiology and Cardiovascular Medicine ,business ,Term (time) - Abstract
Background On January 2020, the first patient with coronavirus 2 (SARS-CoV-2) was detected in Spain. Since then, 3 280 000 cases have been confirmed and 75.305 people have died. We aimed to clarify the epidemiological and clinical characteristics related with poor short-term prognosis in patients diagnosed with SARS-CoV-2. Methods Observational, retrospective single-center study including consecutive patients (≥40yo) diagnosed with SARS-CoV-2 through PCR, since March 2nd to 20th 2020 in our center in Spain. The primary endpoint (PE) was the combined of all-cause death or need for orotracheal intubation within the first 30 days of infection symptoms. Results 704 patients were included (table). A follow-up period of thirty-days was fully completed in 692 of 704 patients (98.3%). At the end of this period, 148 patients (21.4%) met the PE; they were older, more frequently male, obese and smokers. Patients who met the PE had a higher prevalence of hypertension, diabetes, dyslipidemia, ischemic heart disease, heart failure, peripheral and cerebrovascular disease, cancer and lung pathologies. They received more frequently therapies with renin-angiotensin system inhibitors, betablockers, calcium channel blockers and statins, as well as antiplatelet and anticoagulant therapies Multivariate analysis showed that age (OR 1.99 for every 10 years, 95% CI [1.637–2.4], p Conclusion In our group of patients with SARS-CoV-2, age, male sex, diabetes, lung disease and obesity were found to be independent predictors of the combined of all case death or need for orotracheal intubation within the first 30 days of infection symptoms. Larger studies are needed to confirm these results. Funding Acknowledgement Type of funding sources: None. Description of studied populationOdds-ratio and CI for the combined PE
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- 2021
20. Effect of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers on the short-term prognosis of COVID-19 infection
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R Fernandez-Roblas, F Villar-Alvarez, Óscar González-Lorenzo, Laura Esteban-Lucía, M Gonzalez-Rodriguez, P Avila-Barahona, A M Venegas Rodriguez, M A Zambrano Chacon, A Acena Navarro, A M Kallmeyer-Mayor, J Tunon, A Devesa-Arbiol, Juan Antonio Franco-Peláez, L Maure-Blesa, and Ana María Pello-Lázaro
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Angiotensin Receptor Antagonists ,Myocardial ischemia ,Coronavirus disease 2019 (COVID-19) ,biology ,business.industry ,Bradykinin ,Angiotensin-converting enzyme ,Pharmacology ,medicine.disease ,chemistry.chemical_compound ,chemistry ,Heart failure ,Diabetes mellitus ,medicine ,biology.protein ,Angiotensin Receptor Blockers ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background Questions emerged about safety renin-angiotensin system (RAS) inhibitors (angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs)) in patients diagnosed with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Our objective was to evaluate the safety of this treatment in a Spanish cohort during 2020 pandemic. Methods Observational study including all consecutive patients (≥40 years old) diagnosed with SARS-CoV-2 through PCR in the microbiology laboratory of our hospital, since March 2nd to 20th 2020. Clinical characteristics and drugs were recorded. Primary end-point (PE) was the combined of all-cause death or need for orotracheal intubation until 30 days of infection symptoms onset. To assess the effect of RAS inhibitors, we performed a double statistical approach, with multivariate logistic regression and propensity-score matching. Results We included 704 patients (table). Median age was 61 years old (IQR 52.9–72.9); 52.7% were female. 34.7% and 12.6% had hypertension (HTA) and diabetes (DM) respectively. 92 patients (13.1%) and 87 patients (12.4%) were taking ACEI and ARB respectively. Baseline characteristics of both subgroups are shown in the table. Patients on RAS inhibitors treatment had a worse clinical profile: were older, more males and with higher prevalence of HTA, DM, dyslipemia, ischemic heart disease and heart failure. There were no differences in terms of respiratory nor neoplasic disease. After 30 days, 112 patients (15.9%) had died, 148 (21.4%) had died or had required invasive mechanical ventilation (PE); 390 patients (55.4%) had needed hospital admission. PE was reached in 33.3% patients under ACEI treatment (vs. 19.6% in control group, p=0.005) and in 41.9% patients under ARB treatment (vs. 18.5% in control group, p Using a propensity-score approach 79 patients under ACEI treatment and 72 patients under ARB treatment were matched 1:1 with control patients (characteristics of matched population are described in the table) Logistic binary regression showed no significant differences on incidence of the PE in patients under ACEI treatment (OR 0.84, 95% CI [0.43–1.63], p=0.613) nor ARB treatment (OR 1.82, 95% CI [0.92–3.60], p=0.085). Nevertheless, there was a trend towards worse prognosis in ARB patients. Kaplan-Meier curves of survival free of death or need for mechanical ventilation in matched population (ACEI and ARB treatment) are shown in the figure. Conclusions We have not found any correlation between the severity of the disease and the treatment with ACEI nor ARB. We do not recommend the withdrawal of these drugs during the current epidemic situation. Further studies are needed to assess this finding. Funding Acknowledgement Type of funding sources: None. Description of studied populationKaplan-Meier curve in matched population
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- 2021
21. N-Terminal Pro-Brain Natriuretic Peptide Plasma Levels Are Associated with Intermediate-Term Follow-Up Cancer in Coronary Patients
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Lorenzo López Bescós, Joaquín Alonso, Carlos Gutiérrez-Landaluce, Ana Huelmos, Álvaro Aceña, Carmen Cristóbal, Ana Maria Pello, Marta López-Castillo, Jesús Egido, Nieves Tarín, Sergio Ramos-Cillán, Óscar González-Lorenzo, Luis Miguel Blanco-Colio, Óscar Lorenzo, Juan Martínez-Milla, Ignacio Mahillo-Fernández, José Luis Martín-Ventura, José Tuñón, and Jesús Fuentes-Antrás
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medicine.medical_specialty ,tumor ,business.industry ,medicine.drug_class ,Cancer ,Atrial fibrillation ,General Medicine ,medicine.disease ,Gastroenterology ,Article ,Coronary artery disease ,N-terminal pro-brain natriuretic peptide ,Internal medicine ,Heart failure ,Vitamin D and neurology ,Natriuretic peptide ,Medicine ,Biomarker (medicine) ,cancer ,biomarker ,business ,coronary artery disease ,Subclinical infection - Abstract
N-terminal pro-brain natriuretic peptide (NT-proBNP) plasma levels are increased in patients with cancer. In this paper, we test whether NT-proBNP may identify patients who are going to receive a future cancer diagnosis (CD) in the intermediate-term follow-up. We studied 962 patients with stable coronary artery disease and free of cancer and heart failure at baseline. This sample represents a re-analysis of a previous work expanding the sample size and the follow-up. NT-proBNP, galectin-3, monocyte chemoattractant protein-1, high-sensitivity C-reactive protein, high-sensitivity cardiac troponin I (hsTnI), and calcidiol (vitamin D) plasma levels were assessed. The primary outcome was new CD. After 5.40 (2.81–6.94) years of follow-up, 59 patients received a CD. NT-proBNP [HR 1.036 CI (1.015–1.056) per increase in 100 pg/mL, p = 0.001], previous atrial fibrillation (HR 3.140 CI (1.196–8.243), p = 0.020), and absence of previous heart failure (HR 0.067 CI (0.006–0.802), p = 0.033) were independent predictors of receiving a CD in the first three years of follow-up. None of the variables analyzed predicted a CD beyond this time. The number of patients developing heart failure during follow-up was 0 (0.0%) in patients receiving CD in the first three years of follow-up, 2 (6.9%) in those receiving a CD diagnosis beyond this time, and 40 (4.4%) in patients not developing cancer (p = 0.216). These numbers suggest that future heart failure was not a confounding factor. In patients with coronary artery disease, NT-proBNP was an independent predictor of CD in the first three years of follow-up but not later, suggesting that it could be detecting subclinical undiagnosed cancers.
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- 2021
22. Mcp-1 predicts recurrent cardiovascular events in patients with persistent inflammation
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Carlos Gutiérrez-Landaluce, Ana María Pello Lázaro, Óscar González-Lorenzo, José Luis Martín-Ventura, Ana Huelmos, Carmen Cristóbal, Ester Canovas, Álvaro Aceña, Óscar Lorenzo, Lorenzo López Bescós, Juan Martínez-Milla, Andrea Kallmeyer, Jesús Egido, Nerea Méndez-Barbero, Marta López-Castillo, Luis Miguel Blanco-Colio, Joaquín Alonso, José Tuñón, Nieves Tarín, UAM. Departamento de Medicina, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), and Servicio de Cardiología. Hospital Universitario de Fuenlabrada
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Acute coronary syndrome ,medicine.medical_specialty ,Medicina ,lcsh:Medicine ,Inflammation ,Disease ,030204 cardiovascular system & hematology ,Gastroenterology ,Article ,C-reactive protein ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,030212 general & internal medicine ,cardiovascular diseases ,Stroke ,Chemokine CCL2 ,Quimiocina CCL2 ,Enfermedades Cardiovasculares ,biology ,Inflamación ,business.industry ,lcsh:R ,General Medicine ,medicine.disease ,Brain natriuretic peptide ,Cardiovascular Diseases ,NT-proBNP ,Heart failure ,biology.protein ,medicine.symptom ,business ,MCP-1 - Abstract
Clinical data indicate that patients with C-reactive protein (CRP) levels higher than 2 mg per liter suffer from persistent inflammation, which is associated with high risk of cardiovascular disease (CVD). We determined whether a panel of biomarkers associated with CVD could predict recurrent events in patients with low or persistent inflammation and coronary artery disease (CAD). We followed 917 patients with CAD (median 4.59 ± 2.39 years), assessing CRP, galectin-3, monocyte chemoattractant protein-1 (MCP-1), N-terminal fragment of brain natriuretic peptide (NT-proBNP) and troponin-I plasma levels. The primary outcome was the combination of cardiovascular events (acute coronary syndrome, stroke or transient ischemic event, heart failure or death). Patients with persistent inflammation (n = 343) showed higher NT-proBNP and MCP-1 plasma levels compared to patients with CRP <, 2 mg/L. Neither MCP-1 nor NT-proBNP was associated with primary outcome in patients with CRP <, 2 mg/L. However, NT-proBNP and MCP-1 plasma levels were associated with increased risk of the primary outcome in patients with persistent inflammation. When patients were divided by type of event, MCP-1 was associated with an increased risk of acute ischemic events. A significant interaction between MCP-1 and persistent inflammation was found (synergy index: 6.17 (4.39–7.95)). In conclusion, MCP-1 plasma concentration is associated with recurrent cardiovascular events in patients with persistent inflammation.
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- 2021
23. Dataset regarding baseline and follow-up characteristics of out-of-hospital cardiac arrest patients focused on neurological outcomes
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Óscar González Fernández, Eduardo Armada, Ángel M. Iniesta, Laura Rodríguez Sotelo, Juan Caro-Codón, Juan R. Rey, Pablo Merás Colunga, Sandra Rosillo, Esteban López-de-Sá, Jose Lopez-Sendon, Jaime Fernández de Bobadilla, Verónica Rial Bastón, Francisco Javier Irazusta, and José Ruiz Cantador
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education.field_of_study ,medicine.medical_specialty ,Multidisciplinary ,business.industry ,Population ,030204 cardiovascular system & hematology ,Medicine and Dentistry ,lcsh:Computer applications to medicine. Medical informatics ,Out of hospital cardiac arrest ,03 medical and health sciences ,0302 clinical medicine ,Text mining ,Flow chart ,Emergency medicine ,Medicine ,lcsh:R858-859.7 ,Research article ,030212 general & internal medicine ,business ,education ,Personal interview ,Baseline (configuration management) ,lcsh:Science (General) ,lcsh:Q1-390 - Abstract
This data article contains the data related to the research article entitled “Long-term neurological outcomes in out-of-hospital cardiac arrest patients treated with targeted-temperature management” (Caro-Codon et al., 2018). In this dataset, we report details regarding the flow chart of the included patients and the specific exclusion criteria. We also include information on the difference between the patients who attended the structured personal interview (and therefore were finally included in the study) and those who did not attend. Neuropsychiatric and functional data before and after cardiac arrest are also reported. Finally, we list all the “de novo” focal neurological deficits identified after cardiac arrest in the related population.
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- 2018
24. Influence of the temperature on the moment of awakening in patients treated with therapeutic hypothermia after cardiac arrest
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Juan Caro, Jose Lopez-Sendon, Esteban López-de-Sá, Sandra Rosillo, Óscar González, Zorba Blazquez, Maria del Carmen Monedero, Juan R. Rey, Ines Ponz, and Eduardo Armada
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Male ,Time Factors ,medicine.medical_treatment ,Brain damage ,030204 cardiovascular system & hematology ,Emergency Nursing ,Body Temperature ,03 medical and health sciences ,0302 clinical medicine ,Hypothermia, Induced ,Odds Ratio ,Humans ,Medicine ,In patient ,Prospective Studies ,Cardiopulmonary resuscitation ,Rewarming ,Wakefulness ,Prospective cohort study ,Aged ,Retrospective Studies ,business.industry ,030208 emergency & critical care medicine ,Retrospective cohort study ,Odds ratio ,Middle Aged ,Hypothermia ,Cardiopulmonary Resuscitation ,Treatment Outcome ,Anesthesia ,Emergency Medicine ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Out-of-Hospital Cardiac Arrest - Abstract
Target temperature management (TTM) has shown to reduce brain damage after an out-of-hospital cardiac arrest (CA), but the time to neurological recovery is not defined yet. We sought to determine the time these patients need to regain consciousness, as well as factors associated with a late post-arrest awakening.We performed a retrospective analysis of patients cooled to 32-34°C during 24h after CA, who regained neurological responsiveness after rewarming. We measured the time until awakening, defined as obedience to verbal commands.We included 163 CA survivors (84.7% male, 60.2 years) who regained consciousness after TTM: target temperature was either 32°C (36.2%), 33°C (56.4%) or 34°C (6.7%). Mean time of awakening was 3.8 days. Thirty-four patients (20.9%) regained neurological responsiveness after 5 days after CA. All of them had been cooled to either 32°C (18 patients) or 33°C (16), and no patient cooled to 34°C awakened after day 5. A lower target temperature was associated with a later awakening (p0.001). The time to advanced cardiopulmonary resuscitation (CPR) was shorter among the early awakers (p=0.04), but we found no other predictors of an earlier awakening.A high proportion of CA survivors induced to TTM regained consciousness after 5 days, and cooling to a lower target temperature may influence on a late neurological recovery. Therefore, withdrawal of life supporting treatment should be delayed to more than 5 days in patients cooled to 33°C or less. Time to advanced CPR was found to be a predictor of early awakening.
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- 2016
25. Galectin-3 is Associated with Cardiovascular Events in Post-Acute Coronary Syndrome Patients with Type-2 Diabetes
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Óscar González-Lorenzo, Lorenzo López Bescós, Ana Lorenzo-Almorós, Nieves Tarín, Ester Canovas, Luis Miguel Blanco-Colio, Óscar Lorenzo, Jesús Egido, Juan Martínez-Milla, Carmen Cristóbal, Andrea Kallmeyer, Álvaro Aceña, Carlos Gutiérrez-Landaluce, José Luis Martín-Ventura, Joaquín Alonso, Ana Maria Pello, José Tuñón, Ana Huelmos, and Marta López-Castillo
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medicine.medical_specialty ,Acute coronary syndrome ,endocrine system diseases ,Population ,lcsh:Medicine ,Type 2 diabetes ,030204 cardiovascular system & hematology ,Lower risk ,Article ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Diabetes mellitus ,medicine ,Galectin-3 ,education ,030304 developmental biology ,0303 health sciences ,education.field_of_study ,business.industry ,lcsh:R ,nutritional and metabolic diseases ,General Medicine ,medicine.disease ,Clopidogrel ,cardiovascular event ,stable coronary artery disease ,Heart failure ,Cardiology ,business ,medicine.drug - Abstract
Introduction: Type-2 diabetes mellitus (T2DM) is associated with early and severe atherosclerosis. However, few biomarkers can predict cardiovascular events in this population. Methods: We followed 964 patients with coronary artery disease (CAD), assessing plasma levels of galectin-3, monocyte chemoattractant protein-1 (MCP-1), and N-terminal fragment of brain natriuretic peptide (NT-proBNP) at baseline. The secondary outcomes were acute ischemia and heart failure or death. The primary outcome was the combination of the secondary outcomes. Results. Two hundred thirty-two patients had T2DM. Patients with T2DM showed higher MCP-1 (144 (113&ndash, 195) vs. 133 (105&ndash, 173) pg/mL, p = 0.006) and galectin-3 (8.3 (6.5&ndash, 10.5) vs. 7.8 (5.9&ndash, 9.8) ng/mL, p = 0.049) levels as compared to patients without diabetes. Median follow-up was 5.39 years (2.81&ndash, 6.92). Galectin-3 levels were associated with increased risk of the primary outcome in T2DM patients (Hazard ratio (HR) 1.57 (1.07&ndash, 2.30), p = 0.022), along with a history of cerebrovascular events. Treatment with clopidogrel was associated with lower risk. In contrast, NT-proBNP and MCP-1, but not galectin-3, were related to increased risk of the event in nondiabetic patients (HR 1.21 (1.04&ndash, 1.42), p = 0.017 and HR 1.23 (1.05&ndash, 1.44), p = 0.012, respectively), along with male sex and age. Galectin-3 was also the only biomarker associated with the development of acute ischemic events and heart failure or death in T2DM patients, while, in nondiabetics, MCP-1 and NT-proBNP, respectively, were related to these events. Conclusion: In CAD patients, galectin-3 plasma levels are associated with cardiovascular events in patients with T2DM, and MCP-1 and NT-proBNP in those without T2DM.
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- 2020
26. Long-term neurological outcomes in out-of-hospital cardiac arrest patients treated with targeted-temperature management
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Esteban López-de-Sá, Jose Lopez-Sendon, Óscar González Fernández, Juan R. Rey, Laura Rodríguez Sotelo, Jaime Fernández de Bobadilla, Eduardo Armada, Sandra Rosillo, Juan Caro-Codón, Francisco Javier Irazusta, Pablo Merás Colunga, Verónica Rial Bastón, Ángel M. Iniesta, and José Ruiz Cantador
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Adult ,Male ,Pediatrics ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Emergency Nursing ,Targeted temperature management ,Out of hospital cardiac arrest ,03 medical and health sciences ,Executive Function ,0302 clinical medicine ,Modified Rankin Scale ,Hypothermia, Induced ,Outcome Assessment, Health Care ,medicine ,Prevalence ,Humans ,Cognitive Dysfunction ,Prospective Studies ,Survivors ,Aged ,Memory Disorders ,business.industry ,Depression ,Age Factors ,030208 emergency & critical care medicine ,Cognition ,Middle Aged ,Executive functions ,Mental Status and Dementia Tests ,Aggression ,Structured interview ,Emergency Medicine ,Quality of Life ,Female ,Cardiology and Cardiovascular Medicine ,business ,Neurocognitive ,Psychometric tests ,Out-of-Hospital Cardiac Arrest - Abstract
Background This study aimed to assess long-term cognitive and functional outcomes in out-of-hospital cardiac arrest (OHCA) patients treated with targeted-temperature management, investigate the existence of prognostic factors that could be assessed during initial admission and evaluate the usefulness of classic neurological scales in this clinical scenario. Methods Patients admitted due to OHCA from August 2007 to November 2015 and surviving at least one year were included. Each patient completed a structured interview focused on the collection of clinical, social and demographic data. All available information in clinical records was reviewed and a battery of neurocognitive and psychometric tests was performed. Results Seventy-nine patients were finally included in the analysis. Forty-three patients (54.4%) scored below the usual cut-off points for the diagnosis of mild cognitive impairment, even though most of these deficits went unnoticed when patients were assessed using CPC and modified Rankin scale. Nineteen (24%) developed certain degree of impairment in their attention capacity and executive functions. A significant proportion developed new memory-related disorders (43%), depressive symptoms (17.7%), aggressive/uninhibited behavior (12.7%) and emotional lability (8.9%). A greater number of weekly hours of intellectual activity and a qualified job were independent protective factors for the development of cognitive impairment. However, being older at the time of the cardiac arrest was identified as a poor prognostic factor. Conclusions There is a high prevalence of long-term cognitive deficits and functional limitations in OHCA survivors. Most commonly used clinical scales in clinical practice are crude and lack sensitivity to detect most of these deficits.
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- 2018
27. Mortality risk factors in critical post-surgical patients treated using continuous renal replacement techniques
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J.C. Estupiñán-Jiménez, D. Lora, Óscar González, F. Pérez-Cerdà, E. López, and J.M. Castro-Rincón
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Mechanical ventilation ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,General Medicine ,Disease ,medicine.disease ,Intensive care unit ,Confidence interval ,Surgery ,law.invention ,Sepsis ,law ,Relative risk ,Internal medicine ,medicine ,Renal replacement therapy ,Risk factor ,business - Abstract
Objective To determine the influence of demographics, medical, and surgical variables on 30-day mortality in patients who need continuous renal replacement therapy (CRRT). Materials and methods A retrospectively-followed study was conducted using the data of 112 patients admitted to the postoperative intensive care unit who required CRRT, between August 2006 and August 2011, and followed-up for 30 days. The following information was collected: age, gender, history of HBP, DM, cardiovascular disease, CKD, urgent surgery, surgical speciality, organic dysfunction according to the SOFA scale, the number of organs with dysfunction, use of mechanical ventilation, diagnostic and origin of sepsis, type of CRRT, and 30-day mortality. General linear models were used for estimating the strength of association (relative risk [RR], and 95% confidence interval [CI]) between variables and 30-day mortality. Results In the univariant analysis, the following variables were identified as risk factors for 30-day mortality: age (RR 1.04; 95% CI 1.01–1.06; p = .0005), and history of cardiovascular disease (RR 1.57; 95% CI 1.02–2.41; p = .039). Among the variables included in the multivariable analysis (age, history of cardiovascular disease, sepsis, and number of organs with dysfunction), only age was identified as an independent risk factor for 30-day mortality (RR 1.03; 95% CI 1.00–1.05; p = .007). Conclusion Thirty-day mortality in postoperative, critically ill patients who require CRRT is high (41.07%). Age has been identified as an independent risk factor, with renal failure as the most common indication for the use of these therapies.
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- 2015
28. Factores de riesgo para mortalidad en pacientes críticos posquirúrgicos tratados con técnicas continuas de reemplazo renal
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J.C. Estupiñán-Jiménez, F. Pérez-Cerdà, Óscar González, J.M. Castro-Rincón, E. López, and D. Lora
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Gynecology ,medicine.medical_specialty ,Anesthesiology and Pain Medicine ,business.industry ,Medicine ,Critical Care and Intensive Care Medicine ,business - Abstract
Resumen Objetivo Determinar la influencia de las variables demograficas, medicas y quirurgicas sobre la mortalidad a 30 dias en pacientes que requieren la aplicacion de tecnicas continuas de reemplazo renal (TCRR) en la Unidad de Cuidados Intensivos Posquirurgicos. Materiales y metodos Estudio de seguimiento retrospectivo. Datos de 112 pacientes admitidos en la Unidad de Cuidados Intensivos que requirieron TCRR, entre agosto de 2006 y agosto de 2011 y seguidos durante 30 dias. Se recogio la siguiente informacion: edad, genero, historia de HTA, DM, enfermedad cardiovascular e IRC, cirugia urgente, especialidad quirurgica, disfuncion organica de acuerdo con la escala SOFA, numero de organos con disfuncion, uso de ventilacion mecanica, diagnostico y origen de la sepsis, modalidad de TCRR y mortalidad a 30 dias. Se utilizaron modelos lineales generales para estimar la fuerza de la asociacion (riesgo relativo [RR] e intervalo de confianza [IC] al 95%) entre las diferentes variables y la mortalidad a 30 dias. Resultados En el analisis univariante se identificaron como factores de riesgo para la mortalidad a 30 dias la edad (RR 1,04; IC 95% 1,01-1,06; p = 0,0005) y la presencia de enfermedad cardiovascular previa (RR 1,57; IC 95% 1,02-2,41; p = 0,039). Entre las variables incluidas en el analisis multivariante (edad, historia de enfermedad cardiovascular previa, presencia de sepsis y numero de organos con disfuncion), solo la edad se identifico como factor de riesgo independiente para mortalidad a 30 dias (RR 1,03; IC 95% 1,00-1,05; p = 0,007). Conclusion La mortalidad a 30 dias en los pacientes criticos posquirurgicos que necesitan TCRR es alta (41,07%), identificandose la edad como factor de riesgo independiente, siendo la insuficiencia renal aguda la principal indicacion para el uso de estas terapias.
- Published
- 2015
29. In vitro effects of Trichoderma secondary metabolites on Phaeoacremonium aleophilum
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Óscar González-López, V Suárez Villanueva, Santiago Gutiérrez, Pedro A. Casquero, S Mayo, Guzmán Carro-Huerga, and Álvaro Rodríguez-González
- Subjects
Chemical engineering ,biology ,business.industry ,Trichoderma ,Medicine ,business ,biology.organism_classification ,In vitro ,Microbiology ,Phaeoacremonium aleophilum - Published
- 2017
30. Maintenance and assessment of cell viability in formulation of non-sporulating bacterial inoculants
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Óscar González López, Ana Bejarano, Teresa Berninger, Angela Sessitsch, and Claudia Preininger
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0301 basic medicine ,Agricultural Inoculants ,Agrochemical ,Microorganism ,030106 microbiology ,Bioengineering ,Biology ,Applied Microbiology and Biotechnology ,Biochemistry ,03 medical and health sciences ,medicine ,Viability assay ,Desiccation ,Microbial inoculant ,Cell damage ,Bacteriological Techniques ,Microbial Viability ,business.industry ,Agriculture ,medicine.disease ,Biotechnology ,Minireview ,business - Abstract
Summary The application of beneficial, plant‐associated microorganisms is a sustainable approach to improving crop performance in agriculture. However, microbial inoculants are often susceptible to prolonged periods of storage and deleterious environmental factors, which negatively impact their viability and ultimately limit efficacy in the field. This particularly concerns non‐sporulating bacteria. To overcome this challenge, the availability of protective formulations is crucial. Numerous parameters influence the viability of microbial cells, with drying procedures generally being among the most critical ones. Thus, technological advances to attenuate the desiccation stress imposed on living cells are key to successful formulation development. In this review, we discuss the core aspects important to consider when aiming at high cell viability of non‐sporulating bacteria to be applied as microbial inoculants in agriculture. We elaborate the suitability of commonly applied drying methods (freeze‐drying, vacuum‐drying, spray‐drying, fluidized bed‐drying, air‐drying) and potential measures to prevent cell damage from desiccation (externally applied protectants, stress pre‐conditioning, triggering of exopolysaccharide secretion, ‘helper’ strains). Furthermore, we point out methods for assessing bacterial viability, such as colony counting, spectrophotometry, microcalorimetry, flow cytometry and viability qPCR. Choosing appropriate technologies for maintenance of cell viability and evaluation thereof will render formulation development more efficient. This in turn will aid in utilizing the vast potential of promising, plant beneficial bacteria as sustainable alternatives to standard agrochemicals.
- Published
- 2017
31. Clinical outcomes in myocardial infarction and multivessel disease after a cardiac rehabilitation programme: Partial versus complete revascularization
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Ricardo Mori Junco, Raúl Moreno Gómez, Carlos Álvarez Ortega, Regina Dalmau González-Gallarza, Almudena Castro Conde, Luis Furuya-Kanamori, Esteban López de Sa Arreses, Óscar González Fernández, and Zorba Blázquez Bermejo
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Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Coronary Artery Disease ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,Revascularization ,Culprit ,Patient Readmission ,Severity of Illness Index ,Medical Records ,Coronary artery disease ,Hospitals, University ,03 medical and health sciences ,0302 clinical medicine ,Percutaneous Coronary Intervention ,Risk Factors ,Angioplasty ,Internal medicine ,medicine ,Humans ,cardiovascular diseases ,030212 general & internal medicine ,Myocardial infarction ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Cardiac Rehabilitation ,Chi-Square Distribution ,business.industry ,Hazard ratio ,Coronary Stenosis ,Percutaneous coronary intervention ,General Medicine ,Middle Aged ,medicine.disease ,Treatment Outcome ,Spain ,Conventional PCI ,Retreatment ,Cardiology ,Linear Models ,ST Elevation Myocardial Infarction ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
Summary Background Current guideline recommendations encourage culprit vessel only percutaneous coronary intervention (PCI) in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease. However, recent studies have shown a better clinical outcome in patients who receive multivessel PCI. Aim To measure and compare clinical outcomes between partial revascularization (PR) versus complete revascularization (CR) in patients with STEMI and multivessel disease who underwent a cardiac rehabilitation programme. Methods We retrospectively reviewed the medical records of 282 patients with STEMI and multivessel disease who received PR or CR and were subsequently enrolled in a cardiac rehabilitation programme between July 2006 and November 2013 at La Paz University Hospital. The incidences of cardiovascular events, new PCI, hospital admissions for cardiovascular reasons and mortality were compared between the PR and CR groups. Results Overall, 143 patients received PR and 139 received CR. Baseline characteristics were similar in both groups, except for mean age (59.3 vs. 56.7 years; P = 0.02), diabetes mellitus prevalence (34.3% vs. 20.1%; P = 0.01) and number of arteries with stenosis (2.6 vs. 2.3; P = 0.001). During the mean follow-up of 48.0 ± 25.9 months, a cardiovascular event occurred in 23 (16.1%) PR patients and 20 (14.4%) CR patients, with no statistically significant differences in the early (hazard ratio: 0.61, 95% confidence interval: 0.19–1.89) or late (hazard ratio: 1.40, 95% confidence interval: 0.62–3.14) follow-up periods. Cox regression, adjusted for age, sex, presence of diabetes mellitus and number of affected coronary vessels, showed no difference in new cardiovascular event risk. Conclusions There were no statistical differences in clinical outcomes between PR and CR among patients who received cardiac rehabilitation.
- Published
- 2016
32. Comparison of 1-Year Outcome in Patients With Severe Aorta Stenosis Treated Conservatively or by Aortic Valve Replacement or by Percutaneous Transcatheter Aortic Valve Implantation (Data from a Multicenter Spanish Registry)
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Hugo González-Saldivar, Carlos Rodriguez-Pascual, Gonzalo de la Morena, Covadonga Fernández-Golfín, Carmen Amorós, Mario Baquero Alonso, Luis Martínez Dolz, Albert Ariza Solé, Gabriela Guzmán-Martínez, Juan José Gómez-Doblas, Antonio Arribas Jiménez, María Eugenia Fuentes, Laura Galian Gay, Martin Ruiz Ortiz, Pablo Avanzas, Emad Abu-Assi, Tomás Ripoll-Vera, Oscar Díaz-Castro, Eduardo P. Osinalde, Manuel Martínez-Sellés, Hugo González Saldivar, Teresa Parajes-Vazquez, Marina Montero-Magan, Gonzalo De la Morena, Pedro J. Flores-Blanco, Cristina Lozano, Luis Miguel Rincón, Xavier Borras, Eva García Camacho, Andrés Sánchez Pérez, Herminio Morillas Climent, Jorge Sanz Sánchez, María Ferré Vallverdú, Óscar González-Fernández, Maria Jesús Garcia Sánchez, Pedro Luis Sánchez Fernandez, María Victoria Millán, Isaac Pascual, César Morís, Tomás Ripoll Vera, Yolanda Gómez Pérez, Oscar Diaz-Castro, Jesús Jimenez Borreguero, Eduardo Pozo, Paula Antuña, Dafne Viliani, María Victoria Mogollón Jiménez, Gonzalo Marcos Gómez, Marcelino Cortés García, Miguel Orejas Orejas, Juan Quiles, Clara Gunturiz, Javier Castrodeza, Javier Tobar, Javier López, Martin Jesús Garcia Gonzalez, Eva Bernal Labrador, Jorge López Ayerbe, Sonia María Barros, Antoni Carol Ruiz, Javier Botas, Alberto Núñez García, Esther Sanz Girgas, Alfredo Bardají Ruiz, Cesar S. Caro Martinez, Alicia Gómez Aguera, Teresa Pareja Sierra, Fiorella Quinte Yarcuri, Irene Mateo Rodriguez, Maria del Pilar Zuazola Martínez, Teresa Pérez, Vicente Ignacio Arrarte Esteban, Francisco Sogorb Garri, Miguel A. Ramirez-Marrero, Sonia Ibars Campaña, Ferrán Padilla Marchan, Jorge Rodríguez-Capitán, Ramón Andion, Leopoldo Pérez de Isla, Patricia Mahía Casado, José Plaza Carrera, Bernardo García de la Villa Redondo, Félix M. Valencia-Serrano, Daniel Bravo Bustos, Isaac Lacambra-Blasco, Guillermo Isasti, Alicia Bautista Paves, Eduardo Pereyra, Eva Pueo, Luis Cornide Santos, Ana Garrido Martín, Clara Bonanad Lozano, Javier Lopez Diaz, Javier Castrodeza Calvo, and Javier Tobar Ruiz
- Subjects
Aortic valve ,Male ,medicine.medical_specialty ,Percutaneous ,Estenosis aórtica ,Enfermedad cardiovascular ,Clinical Decision-Making ,Comorbidity ,030204 cardiovascular system & hematology ,Conservative Treatment ,Asymptomatic ,Severity of Illness Index ,Tertiary Care Centers ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Aortic valve replacement ,Internal medicine ,medicine ,Odds Ratio ,Humans ,030212 general & internal medicine ,Registries ,Survival rate ,Aged ,Aged, 80 and over ,Heart Failure ,business.industry ,Stroke Volume ,Odds ratio ,Aortic Valve Stenosis ,medicine.disease ,Prognosis ,Surgery ,Cardiac surgery ,Survival Rate ,Stenosis ,medicine.anatomical_structure ,Treatment Outcome ,Echocardiography ,Spain ,Asymptomatic Diseases ,Cardiology ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
The factors that influence decision making in severe aortic stenosis (AS) are unknown. Our aim was to assess, in patients with severe AS, the determinants of management and prognosis in a multicenter registry that enrolled all consecutive adults with severe AS during a 1-month period. One-year follow-up was obtained in all patients and included vital status and aortic valve intervention (aortic valve replacement [AVR] and transcatheter aortic valve implantation [TAVI]). A total of 726 patients were included, mean age was 77.3 ± 10.6 years, and 377 were women (51.8%). The most common management was conservative therapy in 468 (64.5%) followed by AVR in 199 (27.4%) and TAVI in 59 (8.1%). The strongest association with aortic valve intervention was patient management in a tertiary hospital with cardiac surgery (odds ratio 2.7, 95% confidence interval 1.8 to 4.1, p
- Published
- 2016
33. Loss of starch synthase IIIa changes starch molecular structure and granule morphology in grains of hexaploid bread wheat
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Brendan Fahy, Oscar Gonzalez, George M. Savva, Jennifer H. Ahn-Jarvis, Frederick J. Warren, Jack Dunn, Alison Lovegrove, and Brittany A. Hazard
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Medicine ,Science - Abstract
Abstract Starch synthase III plays a key role in starch biosynthesis and is highly expressed in developing wheat grains. To understand the contribution of SSIII to starch and grain properties, we developed wheat ssIIIa mutants in the elite cultivar Cadenza using in silico TILLING in a mutagenized population. SSIIIa protein was undetectable by immunoblot analysis in triple ssIIIa mutants carrying mutations in each homoeologous copy of ssIIIa (A, B and D). Loss of SSIIIa in triple mutants led to significant changes in starch phenotype including smaller A-type granules and altered granule morphology. Starch chain-length distributions of double and triple mutants indicated greater levels of amylose than sibling controls (33.8% of starch in triple mutants, and 29.3% in double mutants vs. 25.5% in sibling controls) and fewer long amylopectin chains. Wholemeal flour of triple mutants had more resistant starch (6.0% vs. 2.9% in sibling controls) and greater levels of non-starch polysaccharides; the grains appeared shrunken and weighed ~ 11% less than the sibling control which was partially explained by loss in starch content. Interestingly, our study revealed gene dosage effects which could be useful for fine-tuning starch properties in wheat breeding applications while minimizing impact on grain weight and quality.
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- 2022
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34. Effects of fire and vegetation cover on hydrological characteristics of a Mediterranean shrubland soil
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Vicente Andreu, Julián Campo, Eugenia Gimeno-García, José Luis Rubio, Óscar González-Pelayo, Generalitat Valenciana, and Consejo Superior de Investigaciones Científicas (España)
- Subjects
Hydrology ,geography ,geography.geographical_feature_category ,Infiltration ,Vegetation cover ,Mediterranean ,Shrubland ,Water retention ,Infiltration (hydrology) ,Experimental fires ,Soil water ,medicine ,Mini-disk infiltrometer (MDI) ,Environmental science ,Infiltrometer ,medicine.symptom ,Surface runoff ,Water content ,Calcareous ,Water Science and Technology - Abstract
10 páginas, 7 figuras, 7 tablas., An experimental study based on the effects of fire on soil hydrology was developed at the Experimental Station of 'La Concordia' (Valencia, Spain). It is located on a calcareous hillside facing SSE and composed of nine erosion plots (4 x 20 m). In summer 2003, after eight years of soil and vegetation recovery from previous fires in 1995 (with three fire treatments: T1 high-intensity fire, T2 moderate intensity, and T3 not burnt), experimental fires of low intensity were again conducted on the plots already burnt, to study the effects of repeated fires on the soil water infiltration, soil water content and runoff. Infiltration rates and capacities were measured by the mini-disk infiltrometer method (MDI), assessing the effects of vegetation cover by comparing the under-canopy microenvironment (UC) and its absence on bare soil (BS), immediately before and after the fire experiments. Soil properties like water retention capacity (SWRC) and water content (SWC) were also determined for the different fire treatments (T1, T2 and T3) and microsites (UC and BS). Hydrological parameters, such as runoff and infiltration rate, were monitored at plot scale from July 2002 to July 2004. In the post-fire period, data displayed a 20% runoff increase and a decrease in infiltration (18%). Differences in the steady-state infiltration rate (SSI) and infiltration capacity (IC) were tested with the MDI on the different treatments (T1, T2 and T3), and between the UC and BS microsites of each treatment. After fire, the SSI of the UC soil declined from 16 mm h(-1) to 12 mm h(-1) on T1, and from 24 mm h(-1) to 19 mm h(-1) on T2. The IC was reduced by 2/3 in the T1 UC soil, and by half on T2 UC soil. On the BS of T1 and T2, the fire effect was minimal, and higher infiltration rates and capacities were reached. Therefore, the presence/absence of vegetation when burnt influenced the post-burnt infiltration patterns at soil microscale. On the T3, different rates and capacities were obtained depending on the microsites (UC and BS), with higher SSI (25 mm h(-1)) and IC (226 mm h(-1)) on BS than on UC (SSI of 18 mm h(-1) and IC of 136 mm h(-1)). The SWRC and SWC were recovered from 1995 to 2003 (prior to the fires). The 2003 fire promoted high variability on the SWC at pF 0.1, 2 and 2.5, and the SWRC on burnt soils were reduced. To summarize, the IC and SSI post-fire decreases were related to the lower infiltration rate at plot scale, the significant differences in the SWRC between burnt and control treatments, and the increase in the runoff yield (20%). According to the results, the MDI was a useful tool to characterize the soil infiltration on the vegetation patches of the Mediterranean maquia, and contrary to other studies, on the UC soil, the infiltration rate and IC, when soil was dry, were lower than that obtained on BS. Once the soil gets wet, similar values were found on both microenvironments., We thank the financial support from the Agreement Generalitat Valenciana - CSIC (2005020112) ‘Impacto de los incendios forestales repetidos sobre los procesos de erosión hídrica del suelo y la recuperación de la cubierta vegetal. Seguimiento y evaluación en una estación permanente de campo’, and the Ministerio de Educación y Ciencia of the Spanish Government project ‘Procesos y balances hidrológicos y de sedimentos a diferentes escalas espaciales en ambientes mediterráneos: Efectos de la variabilidad climática y los cambios de uso del suelo’ (PROBASE CGL2006-11619).
- Published
- 2010
35. Identification of loci associated with pathological outcomes in Holstein cattle infected with Mycobacterium avium subsp. paratuberculosis using whole-genome sequence data
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Maria Canive, Gerard Badia-Bringué, Patricia Vázquez, Oscar González-Recio, Almudena Fernández, Joseba M. Garrido, Ramón A. Juste, and Marta Alonso-Hearn
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Medicine ,Science - Abstract
Abstract Bovine paratuberculosis (PTB), caused by Mycobacterium avium subsp. paratuberculosis (MAP), is a chronic granulomatous enteritis that affects cattle worldwide. According to their severity and extension, PTB-associated histological lesions have been classified into the following groups; focal, multifocal, and diffuse. It is unknown whether these lesions represent sequential stages or divergent outcomes. In the current study, the associations between host genetic and pathology were explored by genotyping 813 Spanish Holstein cows with no visible lesions (N = 373) and with focal (N = 371), multifocal (N = 33), and diffuse (N = 33) lesions in gut tissues and regional lymph nodes. DNA from peripheral blood samples of these animals was genotyped with the bovine EuroG MD Bead Chip, and the corresponding genotypes were imputed to whole-genome sequencing (WGS) data using the 1000 Bull genomes reference population. A genome-wide association study (GWAS) was performed using the WGS data and the presence or absence of each type of histological lesion in a case–control approach. A total of 192 and 92 single nucleotide polymorphisms (SNPs) defining 13 and 9 distinct quantitative trait loci (QTLs) were highly-associated (P ≤ 5 × 10−7) with the multifocal (heritability = 0.075) and the diffuse (heritability = 0.189) lesions, respectively. No overlap was seen in the SNPs controlling these distinct pathological outcomes. The identified QTLs overlapped with some QTLs previously associated with PTB susceptibility, bovine tuberculosis susceptibility, clinical mastitis, somatic cell score, bovine respiratory disease susceptibility, tick resistance, IgG level, and length of productive life. Pathway analysis with candidate genes overlapping the identified QTLs revealed a significant enrichment of the keratinization pathway and cholesterol metabolism in the animals with multifocal and diffuse lesions, respectively. To test whether the enrichment of SNP variants in candidate genes involved in the cholesterol metabolism was associated with the diffuse lesions; the levels of total cholesterol were measured in plasma samples of cattle with focal, multifocal, or diffuse lesions or with no visible lesions. Our results showed reduced levels of plasma cholesterol in cattle with diffuse lesions. Taken together, our findings suggested that the variation in MAP-associated pathological outcomes might be, in part, genetically determined and indicative of distinct host responses.
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- 2021
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36. Resultados visuales en pacientes con macroprolactinoma tratados con agonistas de dopamina
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Óscar González, David Rojas, Esteban Torche, Verónica Fernández, José Luis Cuevas, and Nelson Wohllk
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Gynecology ,medicine.medical_specialty ,Visual acuity ,genetic structures ,business.industry ,Dopamine agonist ,Visual fields ,Medicine ,Prolactinoma ,General Medicine ,business ,eye diseases - Abstract
Introduccion: Los agonistas de dopamina (AD) son actualmente la primera linea de tratamiento en macroprolactinomas y han desplazado a la cirugia como manejo primario de esta condicion, aun en presencia de compromiso visual. Varios estudios han demostrado la efectividad de los AD en reducir el tamano tumoral, con la consiguiente mejoria visual. Objetivo: Estudiar los resultados visuales en pacientes con macroprolactinomas tratados exclusivamente con AD. Material y metodo: Estudio de cohorte retrospectivo que incluyo a pacientes con macroprolactinoma controlados en la Unidad de Neuroendocrinologia y Neuro-oftalmologia del Instituto de Neurocirugia Asenjo entre 1997 y 2011, y que fueron tratados exclusivamente con AD (bromocriptina y/o cabergolina). Se excluyeron pacientes con cirugia o radioterapia previa y aquellos con seguimiento incompleto. Se analiza y compara el estado visual antes y posterior al inicio del tratamiento con AD. Resultados: Se incluyeron 31 pacientes cuya edad promedio fue de 32 anos (8-59). Dieciocho pacientes (58%) tenian compromiso visual al momento del diagnostico (Grupo 1) y 13 estaban sin deterioro (Grupo 2). El seguimiento promedio fue de 36,5 meses. Quince pacientes del Grupo 1 (83%) tuvieron mejoria visual, 2 se mantuvieron estables (11%) y 1 tuvo deterioro visual (6%). En el Grupo 2, solo 1 paciente presento deterioro visual, atribuible a mala adhesion a la terapia. Conclusiones: Los AD son efectivos en el manejo de las complicaciones neuro-oftalmologicas asociadas a macroprolactinomas y deben considerarse como terapia de primera eleccion en este tipo de tumores.
- Published
- 2013
37. Flow cytometric analysis of the encystment process induced by paraquat exposure in Haematococcus pluvialis (Chlorophyceae)
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Carmen Rioboo, Óscar González-Barreiro, Julio Abalde, and Ángeles Cid
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chemistry.chemical_classification ,Haematococcus pluvialis ,biology ,Superoxide ,Astaxanthin ,Chlorophyceae ,Plant Science ,Aquatic Science ,biology.organism_classification ,medicine.disease_cause ,Encystment ,chemistry.chemical_compound ,Biochemistry ,chemistry ,Paraquat ,Oxidative stress ,Chlorophyll ,medicine ,Microalgae ,Flow cytometry ,Carotenoid - Abstract
The freshwater microalga Haematococcus pluvialis exhibits a unique morphological response to environmental stress, accumulating carotenoid pigment during encystment. The complexity of characterizing the different cell stages and monitoring the pigment cell content during the life cycle of this microalga is one of the main problems reported when assessing astaxanthin accumulation and degradation. Therefore, with the aim of studying the potential encystment response in this microalga by means of flow cytometry (FCM), we induced oxidative stress in cultures of vegetative growing cells by treating them with paraquat, a known generator of superoxide anion radicals. Two flow cytometric approaches were successfully used to monitor the effect of oxidative stress on morphological changes and genesis of carotenoids in H. pluvialis: (1) a cytometric characterization of different cell types based on analysis of the fluorescence of chlorophyll a vs the fluorescence of astaxanthin, and (2) staining with the fluorochromes hydroethidium (HE) and dihydrorhodamine 123 (DHR), in order to measure the in vivo intracellular levels of reactive oxygen species (ROS). FCM data showed that astaxanthin accumulation during encystment hampers the production of ROS. Furthermore, the cell content of astaxanthin seems to be a good indicator of the extent to which H. pluvialis cells undergo oxidative stress, and also of how the cells defend themselves under stress conditions. Xunta de Galicia; INCITE08ENA103032ES
- Published
- 2011
38. Hemorragia digestiva baja masiva como manifestación de una lesión de la arteria epigástrica
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Manel Armengol-Carrasco, Jordi Escoll-Rufino, Sandra Castro-Boix, Josep Salvador-Civil, and Óscar González-López
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Gynecology ,medicine.medical_specialty ,business.industry ,Medicine ,Surgery ,business - Published
- 2009
39. Age as risk factor associated with mortality in critical postoperative patients who need continuous renal replacement therapy
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D. Lora, F. Martínez Torrente, Óscar González, E. López, J. C. Estupiñán Jiménez, and J. M. Castro Rincón
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medicine.medical_specialty ,Anesthesiology and Pain Medicine ,business.industry ,medicine.medical_treatment ,Medicine ,Renal replacement therapy ,Risk factor ,business ,Intensive care medicine - Published
- 2012
40. Statin use is associated with reduced mortality after respiratory viral infection
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Juan Antonio Franco-Peláez, Laura Esteban-Lucia, María de los Ángeles Zambrano Chacón, Ana María Pello-Lázaro, Ana María Venegas Rodriguez, Luis Nieto Roca, Camila Sofia García-Talavera, Andrea Kallmeyer Mayor, Felipe Villar Alvarez, Ricardo Fernandez Roblas, Oscar Gonzalez-Lorenzo, José Tuñón, Borja Ibañez, and Alvaro Aceña
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Medicine - Abstract
Background Several studies suggest that statins, besides reducing cardiovascular disease, have anti-inflammatory properties which might provide a benefit in downregulating the immune response after a respiratory viral infection (RVI) and, hence, decreasing subsequent complications. We aim to analyse the effect of statins on mortality after RVI. Methods A single-centre, observational and retrospective study was carried out including all adult patients with a RVI confirmed by PCR tests from October 2, 2017 to May 20, 2018. Patients were divided between statin users and non-statin users and followed-up for 1 year, and all causes of death were recorded. In order to analyse the effect of statin treatment on mortality after RVI we planned two different approaches, a multivariate Cox regression model with the overall population and a univariate Cox model with a propensity-score matched population. Results We included 448 patients, 154 (34.4%) of whom were under statin treatment. Statin users had a worse clinical profile (older population with more comorbidities). During the 1-year follow-up, 67 patients died, 17 (11.0%) in the statin group and 50 (17.1%) in the non-statin group. Multivariate Cox analysis showed that statins were associated with mortality benefit (HR 0.47, 95% CI 0.26–0.83; p=0.01). In a matched population (101 statins users and 101 non-statins users) statins also remained associated with mortality benefit (HR 0.32, 95% CI 0.14–0.72; p=0.006). Differences were mainly driven by non-cardiovascular mortality (HR 0.31, 95% CI 0.13–0.73; p=0.004). Conclusions Chronic statin treatment was associated with reduced 1-year mortality in patients with laboratory-confirmed RVI. Further studies are needed to determine the exact role of statin therapy after RVI.
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- 2021
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41. Identification of loci associated with susceptibility to Mycobacterium avium subsp. paratuberculosis infection in Holstein cattle using combinations of diagnostic tests and imputed whole-genome sequence data.
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Maria Canive, Oscar González-Recio, Almudena Fernández, Patricia Vázquez, Gerard Badia-Bringué, José Luis Lavín, Joseba M Garrido, Ramón A Juste, and Marta Alonso-Hearn
- Subjects
Medicine ,Science - Abstract
Bovine paratuberculosis (PTB) is a chronic inflammatory disease caused by Mycobacterium avium susbp. paratuberculosis (MAP). Genome-wide association studies (GWAS) have identified single nucleotide polymorphisms (SNPs) significantly associated with susceptibility to bovine PTB. The main objective of this study was to identify quantitative trait loci (QTLs) associated with MAP infection in Spanish Holstein cows (N = 983) using combinations of diagnostic tests and imputed whole-genome sequence (WGS) data. The infection status of these animals was defined by three diagnostic methods including ELISA for MAP-antibodies detection, and tissue culture and PCR for MAP detection. The 983 cows included in this study were genotyped with the Bovine MD SNP50 Bead Chip, and the corresponding genotypes were imputed to WGS using the 1,000 Bull genomes reference population. In total, 33.77 million SNP variants per animal were identified across the genome. Linear mixed models were used to calculate the heritability (h2) estimates for each diagnostic test and test combinations. Next, we performed a case-control GWAS using the imputed WGS datasets and the phenotypes and combinations of phenotypes with h2 estimates > 0.080. After performing the GWAS, the test combinations that showed SNPs with a significant association (PFDR ≤ 0.05), were the ELISA-tissue PCR-tissue culture, ELISA-tissue culture, and ELISA-tissue PCR. A total of twelve quantitative trait loci (QTLs) highly associated with MAP infection status were identified on the Bos taurus autosomes (BTA) 4, BTA5, BTA11, BTA12, BTA14, BTA23, BTA24, and BTA28, and some of these QTLs were linked to immune-modulating genes. The identified QTLs on BTA23 spanning from 18.81 to 22.95 Mb of the Bos taurus genome overlapped with several QTLs previously found to be associated with PTB susceptibility, bovine tuberculosis susceptibility, and clinical mastitis. The results from this study provide more clues regarding the molecular mechanisms underlying susceptibility to PTB infection in cattle and might be used to develop national genetic evaluations for PTB in Spain.
- Published
- 2021
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42. Knowledge about healthcare-associated infections in medical, bioanalysis and nursing students from a Venezuelan university
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Amando Guevara, Oscar González, Pedro Salazar, Rosa Tedesco-Maiullari, and Cheila Gascón
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Cross Infections ,Infection Control ,Health Knowledge Attitudes Practice ,Universal Precautions ,Hand Hygiene ,Medicine ,Medicine (General) ,R5-920 - Abstract
Introduction: Knowledge about healthcare-associated infections (HAIs) among health professionals is fundamental to reduce morbidity and mortality rates attributable to these infections. Objective: To assess the level of knowledge on HAIs in final-year students enrolled in the School of Health Sciences of Universidad de Oriente, Venezuela. Materials and methods: A descriptive study was conducted in a stratified random sample (n=98). A survey was administered to all participants in order to determine their knowledge about 3 specific areas: basics of HAIs, universal precautions and hand hygiene. Students who obtained an average score of 17.5 were considered as having an adequate level of knowledge about HAIs. Results: Participants’ average age was 24.9 years, and 74.9% were female. The average scores of nursing, medical and bioanalysis students were 18, 18.04 and 17.25, respectively; the total average score was 17.87. 59.2% of the respondents obtained a passing score. In terms of the 3 areas of knowledge assessed in the survey, most of the students obtained a failing score in basics of HAIs (n=78) and the Hand hygiene (n=76) components, while the majority (n=91) had a passing score in the Universal precautions area. Conclusions: In general, all respondents have adequate knowledge about HAIs and their prevention. However, regardless of the academic program they were enrolled in, students showed a lack of knowledge regarding specific aspects of HAIs, such as the source of the microorganisms that cause these infections or the proper use of gloves, thus it is necessary that more attention is paid to these issues in their curricula.
- Published
- 2020
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43. Author Correction: Identification of loci associated with pathological outcomes in Holstein cattle infected with Mycobacterium avium subsp. paratuberculosis using whole-genome sequence data
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Maria Canive, Gerard Badia-Bringué, Patricia Vázquez, Oscar González-Recio, Almudena Fernández, Joseba M. Garrido, Ramón A. Juste, and Marta Alonso-Hearn
- Subjects
Medicine ,Science - Published
- 2021
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44. Effect of Bivalent Vaccines against Vibrio anguillarum and Aeromonas salmonicida Subspecie achromogenes on Health and Survival of Turbot
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Yolanda Torres-Corral, Albert Girons, Oscar González-Barreiro, Rafael Seoane, Ana Riaza, and Ysabel Santos
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atypical furunculosis ,vibriosis ,autogenous vaccine ,turbot ,adjuvants ,Medicine - Abstract
The efficacy of intraperitoneal injection of an oil-based bivalent autogenous vaccine and the commercial vaccine AlphaJect 3000 (Pharmaq AS) to prevent atypical furunculosis and vibriosis in turbot was analyzed. The effect of both vaccines on health parameters and survival of fish after challenge with V. anguillarum and A. salmonicida subsp. achromogenes was tested. The autogenous vaccine conferred high levels of protection and long-lasting immunity against both pathogens with a single dose. However, severe side effects were observed in turbot injected with this autovaccine and minor negative effects with the AlphaJect 3000 vaccine and the adjuvant Montanide or Eolane. All vaccinated fish showed remarkable antibody agglutination titers, higher than those of control fish, which were maintained 160 d after vaccination. In conclusion, the autogenous bivalent vaccine induces long-lasting protection against atypical furunculosis and vibriosis in turbot, after administration of a single dose, at the cost of high side effects in fish. Therefore, the development of new vaccines should focus on autovaccines and the use of liquid paraffin adjuvants that increase protection with reduced or no side effects.
- Published
- 2021
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45. Determinar los hábitos bucales deformantes en estudiantes de la Escuela Primaria 'Raúl Gómez', municipio Güines.
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María Emilia Núñez Blanco, Oscar González Areu, Yorlandys Martínez Núñez, and Maritza Madam Ofarrill
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manifestaciones bucales ,anomalías dentarias ,estudiantes ,niños. ,Medicine ,Medicine (General) ,R5-920 - Abstract
Introducción: los hábitos bucales deformantes se definen como una costumbre que se adquiere por su repetición frecuente. No son funcionales ni necesarios y hacen que actúen diferentes fuerzas sobre los dientes que pueden causar alteraciones dentomaxilofaciales en la población infantil.Objetivo: determinar algunos hábitos bucales deformantes en estudiantes de siete a nueve años de edad en la escuela “Raúl Gómez García”, del municipio Güines.Métodos: se realizó un estudio observacional descriptivo transversal para determinar los hábitos bucales deformantes en estudiantes de la Escuela Primaria “Raúl Gómez”, del municipio de Güines, provincia Mayabeque. El universo estuvo integrado por los alumnos de siete a nueve años de edad. Se confeccionó una planilla para la recolección de la información con variables como: edad, sexo, hábitos bucales deformantes y anomalías dentomaxilo-faciales. Resultados: el 78.18 % de los niños estudiados presentan alguno de los hábitos bucales deformantes, los niños de nueve años representaron el 51.87 % y el 54.88 % corresponde al sexo femenino, predominando el disfunción lingual (38.34 %) y succión digital (23.07 %). Las anomalías dentomaxilofa-ciales más frecuentes en los niños examinados fueron vestibuloversión de incisivos superiores (38.34 %) y la adaquia con un (23.07 %).Conclusiones: la disfunción lingual y la succión digital fueron los hábitos bucales deformantes más frecuentes y la vestibuloversión y la adaquia las anomalías dentomaxilofaciales de mayor importancia.
- Published
- 2015
46. Prevalencia de trichomonas vaginalis, candida albicans y gardnerella vaginalis en mujeres sin síntomas de vaginitis
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Marisleidys Llanes Rodríguez, Oscar González Reyes, Lilian Sánchez Miranda, and Octavio Fernández Limia
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infecciones vaginales, prevalencia,gardnerella vaginalis, candida albicans, trichomonas vaginalis ,Medicine ,Medicine (General) ,R5-920 - Abstract
Introducción: la vaginitis puede tener manifestaciones simples o combinaciones de síntomas de diferentes etiologías, siendo frecuente un comportamiento asintomático.Objetivo: determinar la prevalencia deTrichomonas vaginalis, Candida albicans y Gardnerella vaginalis en mujeres sin síntomas de vaginitis que asistieron a consultorios médicos de la familia en los municipios Güines y San José de las Lajas de la provincia Mayabeque.Métodos: estudio descriptivo, transversal y prospectivo Los métodos empleados para identificar los microorganismos fueron: tinción de Gram para Gardnerella vaginalis, cultivo en medio Sabouraud en la detección de Candida albicans y el medio Diamond modificado en la identificación de Trichomonas vaginalis.Resultados: de un total de 179 muestras estudiadas fueron negativas 100 (55,87 %), y 79 resultaron positivas (44,1 %). La infección más frecuente fue la candidiasis, en 45 pacientes, lo que representa el 25,14 % de todos los diagnósticos realizados; a continuación vaginosis bacteriana, diagnosticada en 33 pacientes (18,44 %) y, por último, trichomoniasis en 5 pacientes.Conclusiones: los resultados demostraron un porcentaje significativo de mujeres con infecciones vaginales a pesar de encontrarse asintomáticas, comportándose de forma similar en ambos municipios de estudio.
- Published
- 2014
47. Species interactions in an Andean bird–flowering plant network: phenology is more important than abundance or morphology
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Oscar Gonzalez and Bette A. Loiselle
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Andean birds ,Ecological networks ,Elfin forest ,Nectarivory ,Phenology ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
Biological constraints and neutral processes have been proposed to explain the properties of plant–pollinator networks. Using interactions between nectarivorous birds (hummingbirds and flowerpiercers) and flowering plants in high elevation forests (i.e., “elfin” forests) of the Andes, we explore the importance of biological constraints and neutral processes (random interactions) to explain the observed species interactions and network metrics, such as connectance, specialization, nestedness and asymmetry. In cold environments of elfin forests, which are located at the top of the tropical montane forest zone, many plants are adapted for pollination by birds, making this an ideal system to study plant–pollinator networks. To build the network of interactions between birds and plants, we used direct field observations. We measured abundance of birds using mist-nets and flower abundance using transects, and phenology by scoring presence of birds and flowers over time. We compared the length of birds’ bills to flower length to identify “forbidden interactions”—those interactions that could not result in legitimate floral visits based on mis-match in morphology. Diglossa flowerpiercers, which are characterized as “illegitimate” flower visitors, were relatively abundant. We found that the elfin forest network was nested with phenology being the factor that best explained interaction frequencies and nestedness, providing support for biological constraints hypothesis. We did not find morphological constraints to be important in explaining observed interaction frequencies and network metrics. Other network metrics (connectance, evenness and asymmetry), however, were better predicted by abundance (neutral process) models. Flowerpiercers, which cut holes and access flowers at their base and, consequently, facilitate nectar access for other hummingbirds, explain why morphological mis-matches were relatively unimportant in this system. Future work should focus on how changes in abundance and phenology, likely results of climate change and habitat fragmentation, and the role of nectar robbers impact ecological and evolutionary dynamics of plant–pollinator (or flower-visitor) interactions.
- Published
- 2016
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48. Morbilidad por hipertensión arterial en niños y adolescentes
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Oscar González Reyes, Magda Emilia Alonso Cordero, and Lizette Martín Estévez
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hipertensión arterial ,niños ,adolescentes ,Medicine ,Medicine (General) ,R5-920 - Abstract
Se realizó un estudio descriptivo, longitudinal y prospectivo en el Policlínico Universitario “Luis Li Trigent” del municipio de Güines, provincia Mayabeque, en el período comprendido desde el 1o de octubre de 2008 hasta el 31 de marzo de 2009 con el objetivo de determinar la morbilidad por hipertensión arterial en niños y adolescentes pertenecientes al área de salud del policlínico. Nuestro universo estuvo constituido por la totalidad de niños y adolescentes que se diagnosticaron de hipertensión arterial en el período analizado. Para conocer el diagnóstico se realizó un pesquisaje mediante la toma de la tensión arterial a todos los niños de 5 a 19 años pertenecientes a 6 consultorios del médico de la familia ubicados en el Grupo Básico de Trabajo número 1, escogidos de forma aleatoria al azar, previo consentimiento informado a las madres, de los niños que deseen participar en la investigación. Se realizó una precisa caracterización de los niveles de tensión arterial del paciente en como mínimo 3 mediciones, durante semanas o meses, excepto en presencia de hipertensión arterial severa. Para llegar al diagnóstico se utilizaron las tablas de hipertensión arterial en niños y adolescentes, según el Programa Nacional de Hipertensión Arterial del 2008. Se realizó el cálculo de frecuencias absolutas, proporciones, porciento y se aplicó el test de X2 de Pearson. Predominó ligeramente el sexo masculino, encontrándose el mayor grupo de edad entre 15-19 años y con una prevalencia de la raza blanca. En todos los niños se identificaron factores de riesgo, predominando la historia de Hipertensión arterial familiar y la obesidad. La Hipertensión arterial primaria y de grado I fue la más frecuente. La gran mayoría de los niños recibieron tratamiento no farmacológico, lo que predominó sobre el tratamiento farmacológico. Se recomienda la medición de la tensión arterial a todos los niños y adolescentes como parte del examen físico de rutina para detectar precozmente esta entidad.
- Published
- 2011
49. Conservación de las vacunas
- Author
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Oscar González Reyes and Caridad Reyes Perales
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vacunas ,Medicine ,Medicine (General) ,R5-920 - Abstract
Se realizó una revisión bibliográfica actualizada sobre la conservación de las vacunas, el eslabón más importante del programa de inmunización, porque depende de la misma para mantenerse la eficacia en las vacunas, aspecto que de no lograrse conlleva en múltiples ocasiones a reacciones adversas en los vacunados si no se mantiene una correcta conservación. Se seleccionaron temas en formato electrónico, así como folletos relacionados con la temática.
- Published
- 2009
50. Rare Variants in Transcript and Potential Regulatory Regions Explain a Small Percentage of the Missing Heritability of Complex Traits in Cattle.
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Oscar Gonzalez-Recio, Hans D Daetwyler, Iona M MacLeod, Jennie E Pryce, Phil J Bowman, Ben J Hayes, and Michael E Goddard
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Medicine ,Science - Abstract
The proportion of genetic variation in complex traits explained by rare variants is a key question for genomic prediction, and for identifying the basis of "missing heritability"--the proportion of additive genetic variation not captured by common variants on SNP arrays. Sequence variants in transcript and regulatory regions from 429 sequenced animals were used to impute high density SNP genotypes of 3311 Holstein sires to sequence. There were 675,062 common variants (MAF>0.05), 102,549 uncommon variants (0.01
- Published
- 2015
- Full Text
- View/download PDF
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