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Eco-toxicological effects of polyethylene microplastics on DNA damage in erythrocytes of common carp (Cyprinus carpio)
Summary
Scientists exposed carp (a common fish) to microplastic pollution and found it caused increasing DNA damage in their blood cells the longer and more heavily they were exposed. While this study was done in fish, not humans, it adds to growing evidence that microplastics in our water can cause genetic damage in living creatures, raising questions about what similar exposure might mean for people, since we're also consuming microplastics through food, water, and the environment.
This study evaluated the genotoxic effects of polyethylene microplastics (PE-MPs) on Cyprinus carpio using the micronucleus assay.Fish were exposed to different concentrations of PE-MPs (0, 5, 25, and 50 mg/L) for 7 and 14 days.After 7 days, MN frequency increased from 5.0% in the control to 24.0% at 50 mg/L.Prolonged exposure for 14 days further intensified DNA damage, with MN frequency rising from 8.0% in the control to 28.0% at 50 mg/L.Comparative analysis showed a clear concentration-and time-dependent increase in MN frequency, indicating that higher doses and longer exposure durations of PE-MPs significantly enhance genotoxic stress in C. carpio.These findings highlight the potential risk of microplastic pollution in aquatic ecosystems.These findings provide important insights into the biological hazards of microplastic contamination, emphasizing the need for stricter environmental regulations and offering a scientific basis for future research on mitigating microplastic-induced genotoxicity in aquatic ecosystems.