Assessing the Impact of Polyethylene Nano/Microplastic Exposure on Human Vaginal Keratinocytes

The global rise of single-use throw-away plastic products has elicited a massive increase in the nano/microplastics (N/MPLs) exposure burden in humans. Recently, it has been demonstrated that disposable period products may release N/MPLs with usage, which represents a potential threat to women'...

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Veröffentlicht in:International journal of molecular sciences 2023-07, Vol.24 (14), p.11379
Hauptverfasser: Pontecorvi, Paola, Ceccarelli, Simona, Cece, Fabrizio, Camero, Simona, Lotti, Lavinia Vittoria, Niccolai, Elena, Nannini, Giulia, Gerini, Giulia, Anastasiadou, Eleni, Scialis, Elena Sofia, Romano, Enrico, Venneri, Mary Anna, Amedei, Amedeo, Angeloni, Antonio, Megiorni, Francesca, Marchese, Cinzia
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container_issue 14
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container_title International journal of molecular sciences
container_volume 24
creator Pontecorvi, Paola
Ceccarelli, Simona
Cece, Fabrizio
Camero, Simona
Lotti, Lavinia Vittoria
Niccolai, Elena
Nannini, Giulia
Gerini, Giulia
Anastasiadou, Eleni
Scialis, Elena Sofia
Romano, Enrico
Venneri, Mary Anna
Amedei, Amedeo
Angeloni, Antonio
Megiorni, Francesca
Marchese, Cinzia
description The global rise of single-use throw-away plastic products has elicited a massive increase in the nano/microplastics (N/MPLs) exposure burden in humans. Recently, it has been demonstrated that disposable period products may release N/MPLs with usage, which represents a potential threat to women's health which has not been scientifically addressed yet. By using polyethyl ene (PE) particles (200 nm to 9 μm), we showed that acute exposure to a high concentration of N/MPLs induced cell toxicity in vaginal keratinocytes after effective cellular uptake, as viability and apoptosis data suggest, along with transmission electron microscopy (TEM) observations. The internalised N/MPLs altered the expression of junctional and adherence proteins and the organisation of the actin cortex, influencing the level of genes involved in oxidative stress signalling pathways and that of miRNAs related to epithelial barrier function. When the exposure to PE N/MPLs was discontinued or became chronic, cells were able to recover from the negative effects on viability and differentiation/proliferation gene expression in a few days. However, in all cases, PE N/MPL exposure prompted a sustained alteration of DNA methyltransferase and DNA demethylase expression, which might impact epigenetic regulation processes, leading to accelerated cell ageing and inflammation, or the occurrence of malignant transformation.
doi_str_mv 10.3390/ijms241411379
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source MDPI - Multidisciplinary Digital Publishing Institute; MEDLINE; PubMed Central; EZB Electronic Journals Library
subjects Apoptosis
Cell cycle
Cosmetics
Cyclin-dependent kinases
Epigenesis, Genetic
Epigenetic inheritance
Female
Gene expression
Humans
Keratinocytes - chemistry
Kinases
Menstrual products
Microplastics - toxicity
Microscopy
Morphology
Muscle proteins
Plastics
Polyethylene
Proteins
Scientific equipment and supplies industry
Senescence
Skin
Vagina
Water Pollutants, Chemical - toxicity
title Assessing the Impact of Polyethylene Nano/Microplastic Exposure on Human Vaginal Keratinocytes
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