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Maternal exposure to polystyrene nanoplastics causes brain abnormalities in progeny
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When pregnant mice were exposed to polystyrene nanoplastics, their offspring showed abnormal brain development including changes in neural stem cell function, altered brain structure, and cognitive problems. The effects were gender-specific, with some deficits appearing more strongly in one sex. This study raises concerns that nanoplastic exposure during pregnancy could increase the risk of neurodevelopmental problems in children.
As global plastic production continues to grow, microplastics released from a massive quantity of plastic wastes have become a critical environmental concern. These microplastic particles are found in a wide range of living organisms in a diverse array of ecosystems. In this study, we investigated the biological effects of polystyrene nanoplastic (PSNP) on development of the central nervous system using cultured neural stem cells (NSCs) and mice exposed to PSNP during developmental stages. Our study demonstrates that maternal administration of PSNP during gestation and lactating periods altered the functioning of NSCs, neural cell compositions, and brain histology in progeny. Similarly, PSNP-induced molecular and functional defects were also observed in cultured NSCs in vitro. Finally, we show that the abnormal brain development caused by exposure to high concentrations of PSNP results in neurophysiological and cognitive deficits in a gender-specific manner. Our data demonstrate the possibility that exposure to high amounts of PSNP may increase the risk of neurodevelopmental defects.
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Maternal exposure to polystyrene nanoplastics impacts developmental milestones and brain structure in mouse offspring
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Researchers exposed pregnant mice to polystyrene nanoplastics and studied the effects on their offspring's brain development. The study found that maternal nanoplastic exposure affected developmental milestones and brain structure in the young mice. The findings suggest that nanoplastic exposure during pregnancy may pose risks to fetal brain development, though more research is needed to understand the implications for humans.
Maternal exposure to polystyrene nanoplastics causes brain abnormalities in progeny
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Researchers found that maternal exposure to polystyrene nanoplastics caused brain abnormalities in offspring, demonstrating that nanoplastics can cross maternal barriers and affect neurological development in progeny with implications for developmental toxicology.
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Researchers exposed parent mice to polystyrene nanoplastics before and during pregnancy and found that offspring exhibited skeletal and visceral malformations, impaired neonatal reflexes, learning deficits, and structural brain changes — including reduced hippocampal neurons — demonstrating transgenerational neurodevelopmental harm from nanoplastic exposure.
Effects of nanoplastic exposure during pregnancy and lactation on neurodevelopment of rat offspring
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When pregnant and nursing rats were exposed to polystyrene nanoplastics, their offspring showed thinner brain cortexes, disrupted neurotransmitter levels, damaged connections between brain cells, and problems with anxiety and spatial memory. This study suggests that maternal exposure to nanoplastics during pregnancy and breastfeeding could affect brain development in offspring.
Polystyrene nanoplastic exposure leads to abnormal brain development by dysregulation of neural stem cell functions
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A new study suggests that tiny plastic particles called nanoplastics, so small they can potentially cross into the brain, may interfere with how brain stem cells grow and develop, particularly during critical early development stages. While this research was likely done in animal models rather than humans, it raises important questions about whether everyday plastic pollution could affect brain development, especially in fetuses and young children whose brains are still forming. More research is needed to confirm these effects occur in humans and to understand what levels of exposure might pose real risks.
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