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Título: | Mercury accumulation, structural damages, and antioxidant and immune status changes in the Gilthead Seabream (Sparus aurata L.) exposed to methylmercury |
Fecha de publicación: | 23-feb-2016 |
Editorial: | Springer |
Cita bibliográfica: | Archives of Environmental Contamination and Toxicology, Vol. 70, N. 4, 2016, pp. 734-746 |
ISSN: | Print: 0090-4341 Electronic: 1432-0703 |
Palabras clave: | Water pollution Mercury Human exposure Fish Antioxidants Analysis Studies Skin Apoptosis Enzymes LIver Immune system Toxicity Leukocytes |
Resumen: | In aquatic systems, mercury (Hg) is an environmental contaminant that causes acute and chronic damage to multiple organs. In fish, practically all of the organic Hg found is in the form of methylmercury (MeHg), which has been associated with animal and human health problems. This study evaluates the impact of waterborne-exposure to sublethal concentrations of MeHg (10 [mu]g L^sup -1^) in gilthead seabream (Sparus aurata). Hg was seen to accumulate in liver and muscle, and histopathological damage to skin and liver was detected. Fish exposed to MeHg showed a decreased biological antioxidant potential and increased levels of the reactive oxygen molecules compared with the values found in control fish (nonexposed). Increased liver antioxidant enzyme activities (superoxide dismutase and catalase) were detected in 2 day-exposed fish with respect to the values of control fish. However, fish exposed to MeHg for 10 days showed liver antioxidant enzyme levels similar to those of the control fish but had increased hepato-somatic index and histopathological alterations in liver and skin. Serum complement levels were higher in fish exposed to MeHg for 30 days than in control fish. Moreover, head-kidney leukocyte activities increased, although only phagocytosis and peroxidase activities showed a significant increase after 10 and 30 days, respectively. The data show that 30 days of exposure to waterborne MeHg provokes more significant changes in fish than a short-term exposure of 2 or 10 days. |
Autor/es principal/es: | Guardiola, F. A. Chaves-Pozo, E. Espinosa, C. Romero, D. Meseguer, J. Cuesta, A. Esteban, M. A. |
Facultad/Departamentos/Servicios: | Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Ciencias Sociosanitarias |
Versión del editor: | https://link.springer.com/article/10.1007/s00244-016-0268-6 |
URI: | http://hdl.handle.net/10201/140140 |
DOI: | http://doi.org/10.1007/s00244-016-0268-6 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 13 |
Derechos: | info:eu-repo/semantics/embargoedAccess |
Descripción: | ©2016 Springer. This document is the Published version of a Published Work that appeared in final form in Archives of Environmental Contamination and Toxicology. To access the final edited and published work see https://doi.org/10.1007/s00244-016-0268-6 |
Aparece en las colecciones: | Artículos: Ciencias Sociosanitarias |
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