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Mechanistic Insights into PET-MPs-Aggravated Ischemic Stroke via Integrated Computational–Experimental Approaches
Original title: Mechanistic Insights into PET-MPs-Aggravated Ischemic Stroke via Integrated Computational–Experimental Approaches
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Scientists found that tiny plastic particles called PET microplastics—common pollutants that can end up in our bodies, including the brain—made strokes worse in mice by increasing brain inflammation and cell damage. Using a mix of computer modeling and lab experiments, they pinpointed specific biological pathways that explain how these plastics harm the brain during a stroke. While this study was done in mice and cells, not humans, it adds to growing evidence that everyday plastic pollution could be a hidden risk factor for serious health conditions like stroke.
Microplastics, especially the environmentally pervasive polyethylene terephthalate microplastics (PET-MPs), are important environmental pollutants, and their potential risks to the health of the nervous system are increasingly a concern. Evidence indicates the presence of PET-MPs in human tissues, including the brain; however, their specific role in cerebrovascular diseases such as ischemic stroke remains poorly understood. This study applied an integrated multidisciplinary framework combining network toxicology, machine learning, molecular docking, as well as experimental validation to investigate how PET-MP exposure exacerbates ischemic stroke and delineates the underlying mechanisms. Computational analyses identified 15 core target genes linking PET-MP exposure to key pathological pathways involved in neuroinflammation and oxidative stress. Experimental validation using established models of cerebral ischemia, specifically, middle cerebral artery occlusion in mice and oxygen-glucose deprivation/reperfusion (OGD/R) in BV2 microglial cells, demonstrated that PET-MP exposure significantly exacerbates cerebral infarction, neurological deficits, microglia-mediated neuroinflammation, and oxidative damage. These findings establish PET-MPs as an environmental risk factor capable of worsening ischemic stroke pathology and provide crucial mechanistic evidence for the environmental health risk assessment related to microplastic pollution.
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Mechanistic Insights into PET-MPs-Aggravated Ischemic Stroke via Integrated Computational–Experimental Approaches
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Scientists found that PET microplastics—tiny plastic particles from common plastic bottles and packaging that have been detected in human brains—can make strokes worse by increasing inflammation and cell damage in the brain, based on tests in mice and lab-grown cells. This matters because it suggests everyday plastic pollution exposure could be an added risk factor for stroke severity, though more research is needed to confirm this happens the same way in humans.
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