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Martínez López, Salvadora

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Martínez López, Salvadora
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Universidad de Murcia. Departamento de Química Agrícola, Geología yEdafología
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    Reduced hepcidin 1 of gilthead seabream (Sparus aurata): Immunomodulatory effects and implications in iron homeostasis
    (2026) Marín Parra, Claudia; García, Laura; Serna Duque, John Alberto; Ortiz García, María; Martínez López, Salvadora; R. Coxon, Christopher; Espinosa Ruiz, Cristóbal; Esteban Abad, María de los Ángeles; Esteban Abad, María de los Ángeles; Biología Celular e Histología; María Ángeles Esteban Abad; Facultades de la UMU::Facultad de Biología
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    Anthropogenic electromagnetic fields and their influence on growth, humoral Immunity, and metal concentrations in gilthead seabream (Sparus aurata)
    (Elsevier, 2026-01-27) Ortiz García, María; García Gamuz, José Antonio; Martínez López, Salvadora; Esteban Abad, María de los Ángeles; Biología Celular e Histología; Facultad de Biología
    The increasing presence of extremely low-frequency electromagnetic fields (ELF-EMF) in marine environments, driven by human activities and climate change, poses a potential risk to aquatic organisms. This study investigated the physiological and immunological effects of ELF-EMF exposure on gilthead seabream (Sparus aurata), a key species in Mediterranean aquaculture. Fish were exposed to ELF-EMF for one or three weeks, and their growth, serum immune parameters (peroxidase and lysozyme activities), and tissue chemical elements were compared with those of unexposed controls. No significant differences were observed in fish weight, length, or serum immune parameters between the exposed and control groups at any time point. However, a significant reduction in liver cadmium (Cd) levels was detected in fish exposed to ELF-EMF for three weeks, suggesting potential modulation of metal detoxification pathways. The concentrations of other elements, including arsenic (As), lead (Pb), iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn), showed minor changes in various tissues. The levels of sodium (Na), magnesium (Mg), calcium (Ca), and potassium (K) were altered in some tissues after one week of ELF-EMF exposure but generally returned to control levels after three weeks. These findings indicate that short-term ELF-EMF exposure does not significantly affect growth or innate immunity in gilthead seabream under the tested conditions. The observed alterations in tissue levels of toxic and trace elements, as well as macronutrients, indicate potential interactions between ELF-EMF, metal homeostasis, and detoxification mechanisms, necessitating further investigation. This study contributes to the understanding of the effects of anthropogenic ELF-EMF on marine organisms and highlights the need for continued research to assess the long-term ecological implications of increasing ELF-EMF levels in aquatic environments.
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    Radiation shielding potential of Oyster Shells (Ostrea edulis)
    (2026-07-27) Gómez, Cristina; Esteban Abad, María de los Ángeles; Martínez López, Salvadora; Arnaldos Sanabria, María Isabel; Esteban Abad, María de los Ángeles; Biología Celular e Histología; Facultades de la UMU::Facultad de Biología
    El objetivo de este estudio era analizar la composición elemental y la mineralogía de las conchas de ostras de cultivo (O. edulis, Linnaeus, 1758) y explorar la viabilidad de estas conchas para el desarrollo de biomateriales de protección contra la radiación. Las conchas pueden valorizarse, sustituyendo parcialmente a las fuentes minerales no renovables en algunas aplicaciones actuales, contribuyendo así a la implantación de una economía circular de cero residuos. Además, el uso de carbonato cálcico (CaCO₃) procedente de las conchas en aplicaciones que garanticen su inertización durante largos periodos puede evitar la liberación de dióxido de carbono a la atmósfera, contribuyendo así a la reducción de la huella de carbono de la industria del marisco.
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