Will temperature rise change the biochemical alterations induced in Mytilus galloprovincialis by cerium oxide nanoparticles and mercury?
| Autor: | Daniela Maggioni, Francesca Coppola, Eduarda Pereira, Hady Hamza, Rosa Freitas, Camilla Della Torre, Bianca Morosetti, Madalena Andrade |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Pollution
media_common.quotation_subject chemistry.chemical_element 010501 environmental sciences medicine.disease_cause 01 natural sciences Biochemistry Redox 03 medical and health sciences 0302 clinical medicine Ocean warming medicine Animals Mussels 030212 general & internal medicine Ecosystem 0105 earth and related environmental sciences General Environmental Science media_common Mytilus Pollutant biology Temperature Neurotoxicity Cerium Mercury Metabolism biology.organism_classification medicine.disease Mercury (element) chemistry Metabolic capacity Metals Environmental chemistry Nanoparticles Water Pollutants Chemical Oxidative stress |
| Popis: | It is known that, for marine coastal ecosystems, pollution and global warming are among the most threatening factors. Among emerging pollutants, nanoparticles (NPs) deserve particular attention as their possible adverse effects are significantly influenced by environmental factors such as salinity, pH and temperature, as well as by their ability to interact with other contaminants. In this framework, the present study aimed to evaluate the potential interactions between CeO2 NPs and the toxic classic metal mercury (Hg), under current and warming conditions. The marine bivalve Mytilus galloprovincialis was used as biological model and exposed to CeO2 NPs and Hg, either alone or in combination, for 28 day at 17 °C and 22 °C. A suite of biomarkers related to energetic metabolism, oxidative stress/damage, redox balance, and neurotoxicity was applied in exposed and non-exposed (control) mussels. The Hg and Ce accumulation was also assessed. Results showed that the exposure to CeO2 NPs alone did not induce toxic effects in M. galloprovincialis. On the contrary, Hg exposure determined a significant loss of energetic metabolism and a general impairment in biochemical performances. Hg accumulation in mussels was not modified by the presence of CeO2 NPs, while the biochemical alterations induced by Hg alone were partially canceled upon co-exposure with CeO2 NPs. The temperature increase induced loss of metabolic and biochemical functions and the effects of temperature prevailed on mussels exposed to pollutants acting alone or combined. |
| Databáze: | OpenAIRE |
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