Cited by 49Microplastics and Plastic PollutionEnvironmental Toxicology and EcotoxicologyToxic Organic Pollutants Impact

Effects of Pollutants and Microplastics Ingestion on Oxidative Stress and Monoaminergic Activity of Seabream Brains

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Hoyo-Alvarez, Esther, Arechavala-Lopez, Pablo, Jiménez-García, Manuel, Solomando, Antònia, Alomar, Carmen, Sureda, Antoni, Moranta, David, Deudero, Salud·2022·Aquatic Toxicology

Abstract

Nowadays, microplastics (MPs) and adsorbed pollutants are considered a global thread to marine ecosystems. This study describes the effects of pollutants and MPs ingestion on fish brains through the assessment of oxidative stress biomarkers and monoaminergic neurotransmitters using gilthead seabream (Sparus aurata) as fish model. Juveniles were experimentally exposed to three different dietary treatments for 90 days: Control treatment (C) consisted of standard feed; Virgin treatment (V) contained feed enriched with 10% of MPs; and Exposed treatment (E) consisted of feed with 10% of MPs that were exposed to seawater in an anthropogenically impacted area for 2 months in order to enrich the plastic with the pollutants within the water column. Sampling was made at the start of the experiment (T0), at the end of the dietary treatments (T90) and after a posterior detoxification period of 30 days (T120). Results evidenced that a MPs and pollutants enriched diet increases the activity of some of the oxidative stress biomarkers (e.g. CAT and GST), and it was shown for the first time alterations on dopaminergic and serotonergic system activity on seabream brains, indicating potential neurofunctional effects associated to MPs and pollutants ingestion. In addition, results showed a tendency to recover enzymatic and brain monoaminergic neurotransmitter levels after a 30-day detoxification period. In conclusion, MPs and pollutants exposure for 90 days induced oxidative stress and changes on monoaminergic activity in the brain of S. aurata.

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Crossref · 10.1016/j.aquatox.2021.106048

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  • Hoyo-Alvarez et al. reported that in Sparus aurata fed with MPs and a pollutants-enriched diet, the activity of some oxidative stress biomarkers increased and there were alterations in dopaminergic- and serotonergic-system activities, highlighting neuro-functional effects associated with ingestion of MPs and pollutants.

    “Finally, Hoyo-Alvarez et al. [34] reported that, in Sparus aurata specimens fed with MPs and a pollutants-enriched diet, the activity of some of the oxidative stress biomarkers increased; moreover, they showed the alterations in dopaminergic- and serotonergic-system activities, highlighting the neuro-functional effects associated with the ingestion of MPs and pollutants.”

    From Is Wild Marine Biota Affected by Microplastics? (2022) · cites this paper as [34]

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Authors
Hoyo-Alvarez, E., Arechavala-Lopez, P., Jiménez-García, M., Solomando, A., Alomar, C., Sureda, A., Moranta, D., & Deudero, S.
Affiliations
  • Universitat de les Illes Balears (ES)
  • Instituto de Salud Carlos III (ES)
  • Instituto Español de Oceanografía (ES)
Corresponding author
Hoyo-Alvarez, Esther
Venue
Aquatic Toxicology
Publisher
Elsevier BV
Published
2022-01
Volume
242
Pages
106048
ISSN
0166-445X (ISSN-L)
OpenAlex
W3214866643
Cited by
49
References
100
Citations by year
2026: 5 · 2025: 13 · 2024: 14 · 2023: 8 · 2022: 9
FWCI
1.92
Type
journal article
Language
en
Open access
Locations
  • Aquatic Toxicology (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by-nc-nd)
Funders
Plan Estatal de Investigación Científica y Técnica y de Innovación
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
Keywords
microplastics, marine contaminants, Sparus aurata, oxidative stress, monoamines, dopaminergic system, serotonergic system, brain, dietary exposure, detoxification, antioxidant enzymes
MeSH terms
Microplastics, Animals, Brain, Eating, Water Pollutants, Chemical, Biogenic Monoamines, Ecosystem, Neurotransmitter Agents, Oxidative Stress, Sea Bream

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