Propensity to metal accumulation and oxidative stress responses of two benthic species (Cerastoderma edule and Nephtys hombergii): are tolerance processes limiting their responsiveness?

Marques, Ana; Piló, David; Araújo, Olinda; Pereira, Fábio; Guilherme, Sofia; Carvalho, Susana; Santos, M.A.; Pacheco, Mário; Pereira, Patrícia

doi:10.1007/s10646-016-1625-y

Cited by 38 publications

(23 citation statements)

References 70 publications

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“…It appears that TE uptake could be one of several factors influencing the CI and GI of clams sampled from the MCA and the LCA. Our results agree with several studies carried out on TE accumulation in bivalve tissues (Sabatini et al 2011, Marques et al 2016.…”

Section: Discussionsupporting

confidence: 93%

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Bejaoui

Rabeh

Telahigue

et al. 2020

scimar

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The aim of the present study was to investigate the combined effects of seasonality and anthropogenic pressure on a battery of oxidative stress, lipid peroxidation, protein oxidation, DNA damage and histological alterations in the native clam Ruditapes decussatus collected from a less contaminated area (LCA), Ghar El Melh, a moderately contaminated area (MCA), the North Lake, and a highly contaminated area (HCA), the South Lake, all located in the southern Mediterranean Sea. The accumulation of cadmium, lead, copper, iron and zinc was higher in the digestive glandsof clams collected from the MCA and the HCAthan in those from the LCA, particularly during the warm season. Our results reveal that metallothionein, lipid peroxidation, protein oxidation levels and antioxidant defence systems were higher, while acetylcholinesterase activity was lower, in clams from the MCAand HCAthan in those from the LCA. The results also indicate that clams from the MCA and the HCAare characterized by histological alterations and DNA damage. In conclusion, the evident changes of antioxidant defence systems and macromolecules between the studied lagoons reveal the perturbation of the physiological states of clams from polluted sites thatcope with seasonal changes and trace element accumulations.

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Section: Discussionsupporting

confidence: 93%

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Bejaoui

Rabeh

Telahigue

et al. 2020

scimar

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“…CAT activity was determined in triplicate according to [ 44 ], and adapted to microplates as described by [ 45 ]. Briefly, phosphate buffer (0.05 M, pH 7.0) and hydrogen peroxide (H 2 O 2 ; 0.010 M) were added to the supernatant, and the decrease in absorbance due to the degradation of H 2 O 2 was measured in UV-transparent microplates (flat-bottom microplates, Greiner Bio-One GmbH (Frickenhausen, Germany) at 240 nm during 3 min with intervals of 10 s.…”

Section: Methodsmentioning

confidence: 99%

Effects of Inorganic and Organic Pollutants on the Biomarkers’ Response of Cerastoderma edule under Temperature Scenarios

Mesquita,

Gonçalves,

Gonçalves

2023

Antioxidants

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Currently, there is increased chemical pollution, and climate change is a major concern to scientific, political and social communities globally. Marine systems are very susceptible to changes, and considering the ecological and economic roles of bivalve species, like Cerastoderma edule, studies evaluating the effects of both stressors are of great importance. This study intends to (a) determine the toxicity of copper (Cu) and oxyfluorfen at the lethal level, considering the temperature; (b) assess the changes in the antioxidant defence enzymes as a consequence of the simultaneous exposure to chemical and warming pressures; and (c) determine if lipid peroxidation (LPO) and neurotoxic effects occur after the exposure to chemical and temperature stressors. C. edule was exposed to Cu and oxyfluorfen at different temperatures (15 °C, 20 °C and 25 °C) for 96 h. The ecotoxicological results reveal a higher tolerance of C. edule to oxyfluorfen than to Cu, regardless of the temperature. The antioxidant defence system revealed efficiency in fighting the chemicals’ action, with no significant changes in the thiobarbituric reactive species (TBARS) levels to 15 °C and 20 °C. However, a significant inhibition of acetylcholinesterase (AChE) was observed on the organisms exposed to oxyfluorfen at 20 °C, as well as a decreasing trend on the ones exposed to Cu at this temperature. Moreover, the catalase (CAT) showed a significant increase in the organisms exposed to the two highest concentrations of Cu at 15 °C and in the ones exposed to the highest concentration of oxyfluorfen at 20 °C. Looking at the temperature as a single stressor, the organisms exposed to 25 °C revealed a significant increase in the TBARS level, suggesting potential LPO and explaining the great mortality at this condition.

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“…Coordination of antioxidant systems of individual organs allows you to successfully resist the effects of the environment on the whole organism. A number of studies also demonstrate the specificity of the location of various antioxidant enzymes in the organs of mollusks and the significant effectiveness of the protective systems of bivalve mollusks-biofilters [37,51,53,54].…”

Section: Fig 2 Electrophoretic Profiles Of Extracts Of Various Organs...mentioning

confidence: 99%

Distribution and polymorphism of enzymes involved in antioxidant protection and xenobiotics biotransformation in the mediterranean mussel Mytilus galloprovincialis

Топтіков¹

2022

Ukr.Biochem.J.

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The aim of the work was to determine the tissue distribution, activity and polymorphism of 13 enzymes involved in antioxidative protection and xenobiotics biotransformation in a five bivalve mussel organs (hepatopancreas, ctenidia, mantle, leg, adductor muscles). Iso-allozyme analysis was performed by electrophoresis, correlation relationships between the studied enzymes in the whole mussel body were carried out using Spearman’s correlation analysis. It was found that all studied enzymes are polymorphic, each organ differed in the level of enzyme activity and a set of multiple forms. The coordinated functioning of protective enzymes in various mussel organs was demonstrated. Keywords: antioxidant enzymes, coordination of protective enzymes, enzymes of biotransformation, iso-allozyme analysis, Mytilus galloprovincialis

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Propensity to metal accumulation and oxidative stress responses of two benthic species (Cerastoderma edule and Nephtys hombergii): are tolerance processes limiting their responsiveness?

Cited by 38 publications

References 70 publications

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Assessment of oxidative stress, genotoxicity and histopathological responses in the digestive gland of Ruditapes decussatus collected from northern Tunisian lagoons

Effects of Inorganic and Organic Pollutants on the Biomarkers’ Response of Cerastoderma edule under Temperature Scenarios

Distribution and polymorphism of enzymes involved in antioxidant protection and xenobiotics biotransformation in the mediterranean mussel Mytilus galloprovincialis

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