METALES PESADOS Y BIOMARCADORES DE ESTRÉS OXIDATIVO EN LA ALMEJA Tivela mactroides (Born, 1778)

Context Bivalve fishery represents an important socio-economic resource in Río Negro province, and Mytilus platensis is the main exploited species. Thus, biomonitoring trace metals in this mussel is particularly relevant for both environmental protection and human consumption. Aim Anthropogenic pollution and its environmental impact on mussels were experimentally evaluated in situ in two coastline sites of northern Patagonia. Methods Trace metal concentrations were quantified in the water of a harbour area (Port of San Antonio Este) and a reference site (Isla Mejillón), an extraction location of M. platensis, were quantified. Metal accumulation and its effects on metabolic parameters were also measured in mussels. Results Higher concentrations of chromium, nickel and zinc in water were registered in the harbour, along with copper and chromium in gills, digestive gland and mantle of M. platensis, were registered in the harbour. Furthermore, superoxide dismutase activity was augmented, whereas glutathione concentration was reduced in the digestive gland and mantle of mussels from that area. Moreover, the highest glutathione-S-transferase activities in mantle and lipid peroxidation, regardless of organ, were also found there. Conclusion The harbour area has a negative effect on M. platensis and its effects on metal accumulation and oxidative imbalance are organ-specific. Implication This work provided new insights into metal uptake of a commercialised mussel in a realistic environment in Río Negro province.

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Effects of metal accumulation on oxidative metabolism of

Sabatini

Abad

Leis

et al. 2023

Mar. Freshw. Res.

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Niveles de Metales Pesados (Cd, Cr, Pb, Mn) en Aulacomya atra (Molina, 1782) “choro” en la Bahía de Paracas

et al. 2021

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El objetivo del presente estudio fue determinar los niveles de metales pesados (Cd, Cr, Pb, Mn) en Aulacomya atra (Molina, 1782) en la bahía de Paracas (Pisco) en las zonas de extracción de Santa Rosa y la Hierba durante el periodo agosto – diciembre 2019. La determinación de estos metales pesados en Aulacomya atra “Choro” fue a través de la metodología de espectrofotometría de absorción atómica, según la norma NOM-117-SSA1, 1994. En la zona de extracción de Santa Rosa se encontraron valores máximos de 0,75 mg/kg Cd; 3,02 mg/kg Pb; 0,50 mg/kg Cr y 1,0 mg/kg Mn y en caso de la zona de extracción La Hierba 1,10 mg/kg Cd; 1,65 mg/kg Pb; y 0,71 mg/Kg Mn, para este caso, las concentraciones de Cromo en las muestras estuvieron por debajo del límite de detección del equipo. Concluyendo que la presencia y las variaciones de los niveles de los metales Cd y Pb, por lo general exceden los niveles permitidos por la Unión Europea (1,0 mg/kg de peso fresco). Palabras claves: Aulacomya atra, Bahía de Paracas, metales pesados, espectrofotometría.

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Heavy metal poisoning: a review of the literature

Arriaga Bravo,

Caudillo Navarro,

Salazar Flores

et al. 2024

CyF

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Despite the efforts made by the World Health Organization to create prevention programs and strategies for heavy metal poisoning, some of these are still frequent, mainly in some work areas. Its effects can range from minimal to lethal for humans, depending on the exposure time and the dose. The health professional is an essential point of contact to detect possible exposure and intoxication with any of these heavy metals, so knowing their symptoms and mechanism of action, metabolism, and treatment is of the utmost importance. In this brief article, some of the most important points to consider as healthcare personnel are summarized.

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METALES PESADOS Y BIOMARCADORES DE ESTRÉS OXIDATIVO EN LA ALMEJA Tivela mactroides (Born, 1778)

Abstract: Heavy metals and biomarkers of oxidative stress in trigonal clam Tivela mactroides (Born, 1778

Cited by 3 publications

References 28 publications

Effects of metal accumulation on oxidative metabolism of

Effects of metal accumulation on oxidative metabolism of

Niveles de Metales Pesados (Cd, Cr, Pb, Mn) en Aulacomya atra (Molina, 1782) “choro” en la Bahía de Paracas

Heavy metal poisoning: a review of the literature

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