Confocal Surface-Enhanced Raman Imaging of the Intestinal Barrier Crossing Behavior of Model Nanoplastics in Daphnia Magna

Environmental Science & Technology, Год журнала: 2024, Номер 58(26), С. 11615 - 11624

Опубликована: Июнь 18, 2024

Nanoplastics (nP) pose hazards to aquatic animals once they are ingested. Significant knowledge gaps exist regarding the nP translocation across animal intestine, which is first barrier between ingested and body. We examined intestinal crossing behavior of in an model (Daphnia magna) determined mechanism with help "core–shell" polystyrene nanoplastics (nPS) confocal surface-enhanced Raman spectroscopy (SERS). The reporter (4-mercaptobenzoic acid)-tagged gold "core" nPS enables sensitive reliable particle imaging by SERS. This method detected SERS signals concentration as low 4.1 × 109 particles/L (equivalent 0.27 μg/L PS "shell" concentration). was observed multilayer stacked maps nPS. With a higher or longer exposure time nPS, uptake plastic particles increased. In addition, we demonstrated that clathrin-dependent endocytosis macropinocytosis were two major mechanisms underlying translocation. study contributes mechanistic understanding using pioneering analytical toolkit, undergird further investigations into health effects species.

Язык: Английский

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Micro(nano)plastics in commercial foods: A review of their characterization and potential hazards to human health

Environmental Research, Год журнала: 2023, Номер 236, С. 116858 - 116858

Опубликована: Авг. 8, 2023

Язык: Английский

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Polystyrene nanoplastics induce vascular stenosis via regulation of the PIWI-interacting RNA expression profile

Environmental Pollution, Год журнала: 2024, Номер 345, С. 123441 - 123441

Опубликована: Янв. 23, 2024

Язык: Английский

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Study on Genomics of the Bisphenol A-Degrading Bacterium Pseudomonas sp. P1

Water, Год журнала: 2023, Номер 15(4), С. 830 - 830

Опубликована: Фев. 20, 2023

As a widespread pollutant, bisphenol A (BPA) has created serious threat to ecosystem and human health. Therefore, expanding the available microbial resources used screen highly efficient BPA-degrading bacteria with BPA as sole carbon source is very important for removal of this pollutant from environment. In study, degradation rate Pseudomonas sp. P1 30 mg/L was 96.89% within 120 h. Whole genome sequencing showed that strain composed single circular chromosome full length 6.17 Mb, which contained 5636 predicted coding genes. Comparative genomic analysis 210 functional genes related degradation. It confirmed ferredoxin (bisdA), P450 (bisdB), CotA Lac in were expressed under induction BPA. Combined identification metabolites, route by proposed. new metabolite, 4-vinylphenol, detected first time pathway Ⅰ. Ⅱ, directly oxidized phenol 4-isopropenyl presence laccase, rarely reported process bacterial This study had good tolerance various environmental factors at gene level enriched mechanism

Язык: Английский

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In Vitro Nano-Polystyrene Toxicity: Metabolic Dysfunctions and Cytoprotective Responses of Human Spermatozoa

Biology, Год журнала: 2023, Номер 12(4), С. 624 - 624

Опубликована: Апрель 20, 2023

The ubiquitous spread of Polystyrene nanoplastics (PS-NPs) has rendered chronic human exposure an unavoidable phenomenon. biodistribution such particles leads to bioaccumulation in target organs including the testis, site sperm maturation. purpose this research been estimate impact PS-NPs (50 and 100 nm) on metabolism mature spermatozoa. analysis semen parameters revealed a higher toxicity smaller sized PS-NPs, which have negatively affected major organelles, leading increased acrosomal damage, oxidative stress with production ROS, DNA fragmentation, decreased mitochondrial activity. nm, other hand, mainly acrosome induced general state stress. An attempt also made highlight possible protective mechanisms as expression HSP70s their correlation among various parameters. results evinced marked samples exposed correlated worsening stress, anomalies. In conclusion, our confirmed spermatozoa but demonstrated presence capable counteracting at least part these injuries.

Язык: Английский

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Recent Advances in Cellulose Nanofiber Modification and Characterization and Cellulose Nanofiber-Based Films for Eco-Friendly Active Food Packaging

Foods, Год журнала: 2024, Номер 13(24), С. 3999 - 3999

Опубликована: Дек. 11, 2024

There is growing interest in the use of bio-based materials as viable alternatives to petrochemical-based packaging. However, practical application films often hampered by their poor barrier and mechanical properties. In this context, cellulose nanofibers (CNFs) have attracted considerable attention owing exceptional biodegradability, high aspect ratio, large surface area. The extraction CNFs from agricultural waste or non-food biomass represents a sustainable approach that can effectively balance cost environmental impacts. functionalization improves economics raw production processes while expanding applications. This paper reviews recent advances nanofibers, including sources, modification, characterization techniques. Furthermore, we systematically discuss interactions with different composites development functional food films. Finally, highlight nanofiber preservation. Due environmentally friendly properties, are promising alternative petroleum-based plastics. aim present latest discoveries exploring future prospects for edible films, thereby encouraging further research field active

Язык: Английский

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Nanoplastics in Wastewater: Monitoring, Ecotoxicity, and Remediation

Опубликована: Янв. 1, 2025

Язык: Английский

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Unveiling the adsorption mechanism of perfluorooctane sulfonate onto polypropylene nanoplastics: A combined theoretical and experimental investigation

Water Research, Год журнала: 2025, Номер 278, С. 123324 - 123324

Опубликована: Фев. 25, 2025

Polypropylene (PP) is a key component of nanoplastics detected globally in water, which can carry pollutants through co-transport. In this regard, the co-transport perfluoroalkyl substances (PFAS) by (NPs) raises significant concern, as NPs act vectors that enhance PFAS uptake and bioaccumulation organisms during co-exposure. context, research has shown interactions between PFAS, but adsorption mechanism remains still unclear. work, powerful synergic approach combining several computational experimental techniques been used to unveil perfluorooctanesulfonate (PFOS), one most widespread contaminants emerging concerns (CECs) on PP nanoparticles. According our DFT results, PFOS adsorbs onto outer inner surface nanoparticle, with maximum energy ≈ 18 kcal/mol an mainly governed dispersion forces two fragments. Batch experiments have confirmed rapidly showing pH reduce capacity thus affecting Moreover, dipole moment PFOS-nanoparticle complex found be significantly larger compared bare resulting more pronounced transport aqueous environment making PFOS-PP nanoparticle much dangerous than nanoparticle. Altogether, results allowed us disentangle nanoparticles, fundamental step understand co-occurrence such environmental matrices, well obtain new information for toxicity risk-models development.

Язык: Английский

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Nanoplastic exposure weakens immunocompetence in the burrowing tarantula (Chilobrachys guangxiensis) following pathogen-associated molecular pattern challenges

Environmental Research, Год журнала: 2025, Номер unknown, С. 121332 - 121332

Опубликована: Март 1, 2025

Язык: Английский

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Nano-Arrayed Cu2S@MoS2 Heterojunction SERS Sensor for Highly Sensitive and Visual Detection of Polystyrene in Environmental Matrices

Talanta, Год журнала: 2025, Номер 292, С. 127934 - 127934

Опубликована: Март 12, 2025

Язык: Английский

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