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24 results on '"León, Víctor Manuel"'

1. Informe de evolución y estado actual del Mar Menor en relación al proceso de eutrofización y sus causas

Author

Ruiz-Fernández, Juan Manuel, Albentosa, Marina, Aldeguer, B., Álvarez-Rogel, J., Antón, J., Belando-Torrentes, María Dolores, Bernardeau-Esteller, Jaime, Campillo-González, Juan Antonio, Domínguez-Yanes, José Francisco, Ferrera, Isabel, Fraile-Nuez, Eugenio, García-Cancela, Ramón, Gómez-Ballesteros, María, Gómez, F., González-Barcerá, G., Gómez-Jakobsen, Francisco José, León, Víctor Manuel, López-Pascual, C., Marín-Guirao, Lázaro, Martínez-Gómez, Concepción, Mercado-Carmona, Jesús Mariano, Nebot-Colomer, E (Elisabet), Ramos-Cartelle, Ana, Rubio, E., Santos-Echeandía, Juan, Santos, F., Vázquez-Luis, Maite, and Yebra, Lidia

Subjects
Medio Marino y Protección Ambiental, Centro Oceanográfico de Murcia
Published
2020

4. Parte IV. Evaluación del Estado del Medio Marino y definición del GES en la Demarcación Levantino-Balear. Descriptor 8

Author

Campillo-González, Juan Antonio, León, Víctor Manuel, Santos-Echeandía, Juan, Martínez-Gómez, Concepción, Guitart-Ferrarons, Carlos, Fernández-Galindo, Beatriz, García-Aparicio, Víctor, Moreno-González, Rubén, Moreno, Isabel María, Plaza, María, and Pérez-del Sastre, Francisco

Subjects
contaminantes, fish, bivalvos, biomarcadores, research, peces, biomonitoring, Centro Oceanográfico de Murcia, Medio Marino, marinas
Abstract

Informe de Evaluación del estado del Medio Marino y definición del GES en la Demarcación Levantina-Balear en relación al Descriptor 8, Evaluación y seguimiento de la contaminación en las demarcaciones mediterráneas:Estrategias Marinas y Convención de Barcelona., ESMARES2C5A2

Published
2019

12. ESTRATEGIAS MARINAS: INFORME DE ACTUALIZACIÓN DE LA DEMARCACIÓN DEL ESTRECHO Y ALBORÁN (ESAL)

Author

Campillo-González, Juan Antonio, Martínez-Gómez, Concepción, León, Víctor Manuel, Guitart-Ferrarons, Carlos, Fernández-Galindo, Beatriz, García-Aparicio, Víctor, and Moreno-González, Rubén

Subjects
Estrecho y Alborán, Contaminación, Efectos Biológicos, Centro Oceanográfico de Murcia, Estrategia Marina, Medio Marino, Descriptor 8
Abstract

CTUALIZACIÓN DEL DESCRIPTOR 8 CONTAMINANTES Y SUS EFECTOS EVALUACIÓN INICIAL Y BUEN ESTADO AMBIENTAL EN LA DEMARCACIÓN DEL ESTRECHO Y ALBORÁN, Financiado por la Dirección General deSostenibilidad de la Costa y el Mar (MAGRAMA)

Published
2015

13. Metabolomic responses in caged clams, Ruditapes decussatus, exposed to

Author

Campillo-González, Juan Antonio, Sevilla, Ángel, Albentosa, Marina, Bernal, Cristina, Lozano, A.B., Cánovas, Manuel, and León, Víctor Manuel

Subjects
Toxicity, Metabolomics, Centro Oceanográfico de Murcia, Medio Marino, Pollution, Biomarkers
Abstract

The MarMenor is a coastal lagoon affected by the growth of intensive agriculture and urban development in the surrounding area. Large amounts of chemical pollutants fromthese areas are discharged into El Albujón, a permanent water-course flowing into the lagoon. Biomarkers such as the activity of acetylcholinesterase or antioxidant enzymes have been previously tested in this lagoon demonstrating the presence of neurotoxicity and oxidative stress in clams transplanted in sites affected by the dispersion of the effluent from El Albujón. To complete this traditional toxicology work, a metabolomic profiling of these transplanted organisms has been carried out for the detection of metabolic biomarkers induced by agricultural/urban pollutants. More than 70 metabolites have been quantified using a targeting metabolomics platform based on HPLC–MS. The intracellular metabolic pattern was analyzed by PCA from the digestive gland of clams after 7 and 22 days of transplantation. Results showed a different profile of metabolite between organisms collected from control and exposed sites. At the shorter exposure time, there was an increase in several metabolites in the latter when compared with those from control sites, whereas metabolic profiling at 22 days showed that those metabolites were drastically diminished, with even lower levels than at control sites. These metabolites included: (i) 12 amino acids from the 21 proteogenic and HomoSer, (ii) osmotic protectants such as γ-butyrobetaine and taurine and (iii) nucleotides such as ITP. Regarding sulfur-containing molecules, taurine could be highlighted as a potential biomarker since its concentration was reduced by more than 30 times after 22 days of exposure, whereas the antioxidant glutathione remained constant in the organisms from both control and exposed sites. Although targetedmetabolomics has been shown as an early technique of pollutant effect detection, the two-phase pattern could highlight a more complicated metabolite response to pollutants than classical biomarkers., SI

Published
2015

24. Reactividad y mecanismos de transporte del alquilbenceno lineal sulfonatos (LAS) y sus intermedios de degradación en sistemas marinos litorales

Author

León, Víctor Manuel

Subjects
intermedios de degradación, tensioactivo, sorption, linear alkylbenzene sulfonate, surfactant, biodegradation intermediates, distribución, adsorción, biodegradation, comportamiento, coastal systems, behaviour, biodegradación, distribution, Centro Oceanográfico de Murcia, Medio Marino, sistemas litorales, alquilbenceno lineal sulfonato
Abstract

Se han desarrollado métodos de análisis específicos para el alquilbenceno lineal sulfonato y sus intermedios de degradación en agua y sedimentos marinos. Se ha caracterizado su distribución, reactividad y mecanismos de transporte en sistemas litorales de la península Ibérica., Este trabajo ha sido parcialmente financiado por el proyecto: “Priority surfactants and their toxic metabolites in waste effluents discharges: an integrate study” financiado por la Unión Europea (UE/ENV4-CT97-0494)

Published
2001

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