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Potential Toxicological Consequences of Silver Nanoparticles Coexposed With Polyvinyl Chloride Nanoplastics on Oreochromis niloticus
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Scientists found that when tiny plastic particles (from PVC) and silver nanoparticles—both common pollutants from products like water bottles and antibacterial coatings—mix together in water, they become more harmful to fish than either one alone, damaging their organs, blood, and liver function. The plastic particles actually acted like a "delivery truck," helping silver penetrate deeper into fish tissue. Since these fish are a food source and these pollutants can end up in waterways, this research is an early warning sign that combinations of everyday pollutants may be more dangerous together than scientists previously realized—a concern worth watching as we learn more
Further investigation into the combined harmful effects of contaminants is needed, particularly regarding limited studies on interactions between nanoplastics and nanoparticles in fish, especially those involving polyvinyl chloride nanoplastics (PVC-NPs) and silver nanoparticles (Ag-NPs). Thus, this study investigates the potential cumulative toxicological effects of PVC-NPs and Ag-NPs on Nile tilapia (Oreochromis niloticus) by assessing multiple biomarkers. Four groups of fish were given 10 mg/L PVC-NPs, 4 mg/L Ag-NPs, 10 mg/L PVC-NPs plus 4 mg/L Ag-NPs, alongside a control group (no exposure) for 96 h. The data showed that Ag content in the gills, liver, and kidney of Nile tilapia increased in the Ag-NPs and combined exposure groups. The remarkable reduction in all hematological parameters and albumin, with elevation in total protein, globulin, liver enzymes, creatinine, and uric acid levels, was observed in all exposure groups. Furthermore, PVC-NPs and Ag-NPs, single or combined, increase lipid peroxidation and alter antioxidant levels (catalase and glutathione reduced) in all tissues. The deleterious histological effects were pronounced in the gills, liver, and kidney in all exposure groups compared with the control. In conclusion, Ag-NPs exhibit greater toxicity than PVC-NPs, with significant toxic effects on fish resulting from interactions that suggest a synergistic effect, as PVC serves as a transporter of Ag to fish and tissues. The findings will enhance understanding of the hazards posed by the combination of PVC-NPs and Ag-NPs to freshwater fish and can improve environmental risk assessment and aquaculture methods.
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Researchers tested the combined effects of different-sized plastic particles with silver nanoparticles on marine microorganisms and found that the mixture was more toxic than either pollutant alone. Smaller nanoplastics combined with silver nanoparticles caused the most severe damage, disrupting energy and fat metabolism and causing DNA and protein damage. This study shows how microplastics can amplify the toxicity of other environmental pollutants in marine food chains.
Neurological Outcomes of Joint Exposure to Polystyrene Micro/Nanospheres and Silver Nanoparticles in Zebrafish
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This zebrafish study found that tiny nanoplastics made the brain-damaging effects of silver nanoparticles worse, while larger microplastics had less of an impact. The findings suggest that when nanoplastics combine with other common pollutants, they may create greater risks to the nervous system than either pollutant alone.
Synergistic toxicity of abamectin with nanoplastics in rainbow trout mediated by gut-liver axis disruption: Insights into oxidative stress, metabolic dysregulation, and microbiota change
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Scientists found that when a common pesticide (used in fish farming) combines with tiny plastic particles called nanoplastics, the mix causes far more damage to fish than either one alone—harming gut health, triggering liver inflammation, and disrupting the balance of good and bad gut bacteria. This matters because it shows how pollutants can team up to create bigger health problems than expected, raising concerns about how the growing mix of plastics and chemicals in our water might similarly affect other animals—and potentially humans—who are exposed to combinations of contaminants rather than just one at a time.
Individual and Combined Toxic Effects of Nano-ZnO and Polyethylene Microplastics on Mosquito Fish (Gambusia holbrooki)
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Researchers studied the individual and combined effects of polyethylene microplastics and zinc oxide nanoparticles on mosquito fish. The combination caused greater damage to liver tissue, blood parameters, and antioxidant systems than either pollutant alone. The findings suggest that microplastics interacting with other environmental contaminants can amplify toxic effects in aquatic organisms.
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