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Effects of exposure to nano-plastic drinking during pregnancy on cognitive related proteins in offspring of SD rats
Summary
Researchers exposed pregnant rats to nanoplastics and then analyzed protein expression in the hippocampus of their offspring. They found reduced levels of proteins important for neural development and increased levels of inhibitory proteins, with pathway analysis highlighting ferroptosis as a key mechanism. The study suggests that prenatal nanoplastic exposure may contribute to cognitive deficits in offspring by disrupting brain protein expression during development.
Nanoplastics, an emerging contaminant, pose risks to fetal neural development, transferring from mother to offspring via placenta and breast milk. Assessing these risks, hippocampal CA3 samples from nanopolystyrene-exposed rat offspring were proteomically analyzed. Findings revealed reduced expression of neural developmental proteins (KIF21A, STMN2, DMTN, DLG1) and increased inhibitory proteins (PZP, α-2M, FN1, SERPINA1, ALOX15) in the hippocampus. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis highlighted ferroptosis enrichment, validated by significantly expressed ALOX15 and TF proteins. These alterations suggest nanopolystyrene’s potential contribution to cognitive deficits and neurodevelopmental disorders, emphasizing its hazardous impact on neural development. This study provides novel insights into nanopolystyrene’s risks.