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• W3203850116 endingPage "112837" @default.
• W3203850116 startingPage "112837" @default.
• W3203850116 abstract "Nanoplastics, including polystyrene nanoplastics (PS-NPs), are widely existed in the atmosphere, which can be directly and continuously inhaled into the human body, posing a serious threat to the respiratory system. Therefore, it is urgent to estimate the potential pulmonary toxicity of airborne NPs and understand its underlying mechanism. In this research, we used two types of human lung epithelial cells (bronchial epithelium transformed with Ad12-SV40 2B, BEAS-2B) and (human pulmonary alveolar epithelial cells, HPAEpiC) to investigate the association between lung injury and PS-NPs. We found PS-NPs could significantly reduce cell viability in a dose-dependent manner and selected 7.5, 15 and 30 μg/cm2 PS-NPs as the exposure dosage levels. Microarray detection revealed that 770 genes in the 7.5 μg/cm2 group and 1951 genes in the 30 μg/cm2 group were distinctly altered compared to the control group. Function analysis suggested that redox imbalance might play central roles in PS-NPs induced lung injury. Further experiments verified that PS-NPs could break redox equilibrium, induce inflammatory effects, and triggered apoptotic pathways to cause cell death. Importantly, we found that PS-NPs could decrease transepithelial electrical resistance by depleting tight junctional proteins. Result also demonstrated that PS-NPs-treated cells increased matrix metallopeptidase 9 and Surfactant protein A levels, suggesting the exposure of PS-NPs might reduce the repair ability of the lung and cause tissue damage. In conclusion, nanoplastics could induce oxidative stress and inflammatory responses, followed by cell death and epithelial barrier destruction, which might result in tissue damage and lung disease after prolonged exposure." @default.
• W3203850116 created "2021-10-11" @default.
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• W3203850116 date "2021-12-01" @default.
• W3203850116 modified "2023-10-16" @default.
• W3203850116 title "In vitro evaluation of nanoplastics using human lung epithelial cells, microarray analysis and co-culture model" @default.
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• W3203850116 doi "https://doi.org/10.1016/j.ecoenv.2021.112837" @default.
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