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Evaluation of oxidative stress caused by virgin and environmental microplastics in gilthead seabream (sparus aurata)
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Researchers evaluated oxidative stress responses in gilthead seabream (Sparus aurata) exposed to both virgin and environmentally collected microplastics, comparing the ecotoxicological effects of laboratory-grade particles against real-world contaminated samples to better reflect actual marine exposure conditions.
Oxidative stress arises when there is an imbalance between the production of reactive oxygen species and the body's antioxidant defenses. Microplastics (MPs), which are widespread plastic particles less than 5 mm in size, can potentially induce oxidative stress due to their physical and chemical hazards. While this issue has been explored in numerous studies over recent years, most research has concentrated on the effects of virgin or artificially contaminated MPs. Consequently, there is still much to learn about the impact of environmental microplastics (EMPs). Here, we investigated the effects of EMPs and virgin MPs on Sparus aurata juveniles. For this purpose, an 80-day experiment was conducted. Three different diets were supplied in triplicate: A (control), B (diet with 10 Also see: https://micro2024.sciencesconf.org/559457/document
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Evaluation of oxidative stress caused by virgin and environmental microplastics in gilthead seabream (sparus aurata)
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Researchers investigated oxidative stress responses in gilthead seabream (Sparus aurata) exposed to both virgin microplastics and environmentally collected microplastics, comparing the antioxidant defense responses triggered by each particle type. The study found that environmental microplastics induced distinct oxidative stress patterns relative to virgin particles, highlighting the importance of using field-collected plastics in ecotoxicological studies to better reflect real-world exposure conditions.
Effects of pollutants and microplastics ingestion on oxidative stress and monoaminergic activity of seabream brains
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Researchers examined how microplastics and adsorbed pollutants affect gilthead seabream brains over 90 days, finding that pollutant-enriched microplastics caused increased oxidative stress and altered monoaminergic neurotransmitter activity compared to virgin microplastics.
Assessment of the effect of long-term exposure to microplastics and depuration period in Sparus aurata Linnaeus, 1758: Liver and blood biomarkers
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Researchers assessed the effects of 90-day microplastic exposure followed by a 30-day recovery period on gilthead sea bream (Sparus aurata). The study found that long-term ingestion of low-density polyethylene microplastics induced oxidative stress and inflammatory responses in the liver and blood, and that some biomarkers did not fully recover during the depuration period, suggesting persistent biological effects.
Environmentally derived nanoplastics induce oxidative and genotoxic responses in gilthead seabream (Sparus aurata)
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Scientists created tiny plastic particles from real ocean pollution and exposed fish to them for four days. The plastic particles didn't kill the fish, but they damaged the fish's DNA and caused harmful stress inside their cells. This matters because these same tiny plastics are building up in our oceans and food chain, potentially affecting the seafood we eat.
Quantification of differential tissue biomarker responses to microplastic ingestion and plasticizer bioaccumulation in aquaculture reared sea bream Sparus aurata
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Researchers quantified biomarker responses to microplastic ingestion and plasticizer bioaccumulation in aquaculture-reared sea bream (Sparus aurata) over 120 days. The study analyzed microplastic intake in the gastrointestinal tract and measured oxidative stress responses in blood, liver, and muscle tissue at different time points. The findings suggest that microplastic exposure in aquaculture settings induces measurable oxidative stress and plasticizer accumulation in commercially important fish species.
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