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Oxidative and inflammatory responses to virgin and beached microplastics in marine fish liver
Summary
This study compared oxidative stress and inflammation responses in marine organisms exposed to virgin microplastics versus weathered, beach-collected microplastics. Beached particles, which have undergone environmental aging, triggered different and in some cases stronger toxic responses than their pristine counterparts.
Microplastics (MPs) pose a threat to marine organisms which mistake them for food leading to ingestion-related toxicological effects. Exposure to virgin MPs triggers activation of oxidative stress pathways and increases intestinal and hepatic inflammation. Beached MPs suffer an ageing process that enhances their ability to adsorb pollutants and therefore accentuates their toxicity. Prior studies in Dicentrarchus labrax determined that chemical pollutants act synergistically with MPs in triggering inflammatory responses and dysbiosis in fish intestine, and that plastic additives and contaminants bioaccumulate in fish muscle and liver and can be subject to trophic transfer. Here we assess the effects of beached MP ingestion in Sparus aurata juveniles fed a diet containing either 10 Also see: https://micro2024.sciencesconf.org/558983/document