Microplastics in Cuban freshwaters: diversity, temporal changes, and effects on extracellular enzymatic activity

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 125764 - 125764

Published: Jan. 1, 2025

Language: Английский

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Common issues of data science on the eco-environmental risks of emerging contaminants

Environment International, Journal Year: 2025, Volume and Issue: 196, P. 109301 - 109301

Published: Jan. 27, 2025

Language: Английский

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Distribution and Biological Response of Nanoplastics in Constructed Wetland Microcosms: Mechanistic Insights into the Role of Photoaging

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Concern over nanoplastic contamination of wetland ecosystems has been increasing. However, little is known about the effect photoaging on distribution and biological response nanoplastics. Here, palladium-labeled polystyrene nanoplastics (PS-Pd NPs) at 0.05-50 mg/L were exposed to constructed microcosms containing floating (Eichhornia crassipes) submerged (Vallisneria natans) macrophytes. Results demonstrate that PS-Pd NPs' concentration in surface water after 2-4 weeks exposure was decreased by 98.4% as compared with 1st week. Photoaging enhanced charge colloidal stability NPs, a subsequent increase content NPs middle layer 264.6 207.4%, respectively. Additionally, significantly accumulation E. crassipes roots 6.9-65.0% it V. natans shoots 59.7-123.0%. inhibited growth 43.8% 50 mg/L. Mechanistically, induced oxidative stress natans, leading disruption metabolic pathway. Interestingly, NP nitrification due alteration related bacterial community (Ellin6067 13.19%). These findings deepen our understanding environmental fate risk plastic particles ecosystems.

Language: Английский

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The wheel of time: The environmental dance of aged micro- and nanoplastics and their biological resonance

Eco-Environment & Health, Journal Year: 2025, Volume and Issue: 4(1), P. 100138 - 100138

Published: Feb. 14, 2025

The aging of micro- and nanoplastics (MNPs) significantly affects their environmental behavior ecological impacts in both aquatic terrestrial ecosystems. This review explored the known effects on MNPs identified several key perspectives. Firstly, can alter fate transport due to changes surface properties. alteration accelerates accumulation specific habitats like oceans soils, resulting increased bioaccumulation by organisms. In addition, aged interact differently with living organisms than pristine counterparts influencing attachment biofilms other microorganisms Moreover, processes exhibit adverse via increasing bioavailability potential toxicity as degradation products are released. Last but not least, biodegradation be altered process, thus affecting rates pathways environment. However, there still knowledge gaps regarding natural behaviors MNPs, such mechanisms different types plastic, influence factors, release pollutants, even transformation Therefore, a great contribution made sustainable plastic use preservation studying common subsequent biological effects.

Language: Английский

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Environmental Photodegradation of Commercial Food Containers: Analytical, Quantitative, and Morphological Analysis of Emerged Microplastics and Nanoplastics

Published: Jan. 1, 2025

Language: Английский

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Coupled Influence of Magnetic Biochar and Solution Chemistries on Retention and Release of Nanoplastics in Porous Media

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(5), P. 2207 - 2207

Published: Feb. 28, 2025

Magnetic biochar (MBC), as an environmentally friendly material, has been extensively used for the remediation of soil and groundwater contamination. The retention release nanoplastics (NPs) with carboxyl (NPs-COOH) or amino functionalization (NPs- NH2) in saturated porous media were investigated under varying conditions ionic strength (IS), MBC addition, humic acid (HA) concentration, cation types. reversible irreversible NPs was examined by altering IS, increasing solution pH, inducing exchange. results revealed that enhanced surface roughness media, thereby inhibiting NPs' transport. HA promoted NPs-NH2 transport more effectively than NPs-COOH due to electrostatic repulsion, steric hindrance, competition deposition sites. Under a reduced IS increased portion retained released, showing greater NPs-COOH, indicating retention. Additionally, stronger charge-shielding cation-bridging effects Ca2+ significantly NPs. Cation exchange resulted less being most irreversibly deeper primary minima. However, small number remobilized electrical double layer expansion, deprotonation, exchange, These findings provide valuable insights into fate environment.

Language: Английский

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Gestational exposure to nanoplastics disrupts fetal development by promoting the placental aging via ferroptosis of syncytiotrophoblast

Environment International, Journal Year: 2025, Volume and Issue: 197, P. 109361 - 109361

Published: March 1, 2025

Micro(nano)plastics (MNPs), are emerging environmental pollutants that have garnered widespread attention. Epidemiological and animal studies shown MNPs exposure during pregnancy is associated with adverse outcomes, such as intrauterine growth restriction (IUGR) miscarriage. However, the underlying mechanisms remain poorly understood. In this study, we found to a high dose (1 μg·mL-1) of 100 nm polystyrene nanoparticles (NPs) from gestational day (GD) 0 GD17 significantly decreased fetal weight increased number resorptions compared control group. Moreover, was lower in high-dose group than low-dose (0.1 Meanwhile, ferroptosis senescence were observed placentas mice exposed NPs. vitro experiments using human syncytiotrophoblast (STB) cells differentiated BeWo cells, NPs caused STB cells. Subsequent investigations revealed inhibition signaling by ferrostain-1 (Fer-1) or deferiprone (DFP) ameliorated induced Furthermore, alleviating placental Fer-1 improves loss mice. Taken together, our results demonstrated activated pathway STB, resulting which may attribute NPs-induced IUGR. This study not only elucidated mechanistic link between outcomes but also highlighted necessity for targeted interventions protect health, underscoring broader implications public health policy.

Language: Английский

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Infrared spectroscopic characterization by atomic force microscopy of two model Nano-Samples of Low-Density polyethylene designed by laser ablation and Ultraviolet/Ultrasound

Materials & Design, Journal Year: 2025, Volume and Issue: unknown, P. 113804 - 113804

Published: March 1, 2025

Language: Английский

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Predicting Protein Corona Formation on Polylactic Acid Microplastics Pre- and Post-Photoaging: The Importance of Optimal Imputation Methods

Environmental Science & Technology Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Micro-nanoplastics (MNPs) enter biological systems, forming a protein corona (PC) by adsorbing proteins from bodily fluids, influencing their effects. Mass spectrometry-based proteomics characterizes PC composition, and recent advances have leveraged amino acid sequence-derived features to predict formation using supervised random forest (RF) classifier. However, mass spectrometry often generates substantial missing values (MVs), which may hinder the model's predictive performance understanding of protein–particle interactions. This study assessed impact 20 imputation methods on RF classifier in predicting human plasma polylactic (PLA) photoaged PLA microplastics (MPs), considering rising ecological health concerns. The results showed that five left-censored (Zero, Half-min, Min, QRILC, GSimp) achieved best performance, with high accuracy (0.80–0.82), AUC (0.78–0.84), precision (0.78–0.80), recall (0.97–0.98). Protein spatial features, including secondary sheet structure (negative) absolute solvent-accessible area (positive), were identified as key factors adsorption onto MPs. Additionally, UV aging increased importance ranking frac_aa_S fraction_exposed_exposed_S, highlighting altered protein–MPs interactions, likely through hydrogen bonding electrostatic forces. demonstrates potential enhancing for formation.

Language: Английский

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Photodegradation Controls of Potential Toxicity of Secondary Sunscreen-Derived Microplastics and Associated Leachates

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

The escalating environmental concern over secondary microplastics (SMPs) stems from their physicochemical evolution primary (PMPs), yet the contribution of varying transformations to ultimate risks remains unknown. In this study, a photomechanical degradation process was employed convert sunscreen-derived (SDMPs) into SDMPs. While mechanical caused physical fragmentation, photodegradation induced both and chemical alterations, introducing surface oxidation, bond scission, cross-linking Employing combination alkaline digestion pyrolysis GC-MS techniques, it observed that fragmentation photooxidation led heightened intracellular sequestration MPs. Although bioaccumulated SDMPs could be indicated by enlarged lysosomes fragmented mitochondria, toxicity at cellular level primarily driven post-photodegradation. A nontargeted analysis employing high-resolution mass spectrometry identified 46 plastic-associated compounds in leachate, with photodegradation-induced playing crucial role dissociation hydrophobic additives oxidative conversion leached compounds. leachate exacerbated photodegradation, mitochondrial serving as subcellular biomarker, indicative toxicity. This study elucidates pivotal augmenting cytotoxicity SDMPs, shedding light on intricate interplay between risks.

Language: Английский

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