Emergence of nanoplastics in the aquatic environment and possible impacts on aquatic organisms

The Science of The Total Environment, Год журнала: 2023, Номер 906, С. 167404 - 167404

Опубликована: Сен. 26, 2023

Язык: Английский

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Strategies and Challenges of Identifying Nanoplastics in Environment by Surface-Enhanced Raman Spectroscopy

Environmental Science & Technology, Год журнала: 2022, Номер 57(1), С. 25 - 43

Опубликована: Дек. 28, 2022

Nanoplastics (<1000 nm) have been evidenced to be universal in a variety of environmental media. They pose potential cytotoxicity and health risk due their tiny size, which allows them easily penetrate biological barriers enter cells. Here, we briefly review the various prevalent analytical techniques or tools for identifying nanoplastics, further move focus on advantages disadvantages. Surface-enhanced Raman spectroscopy (SERS) has implemented identification individual nanoparticles because its high sensitivity molecules ease rapid characterization. Therefore, introduce SERS technique following aspects, (1) principles SERS; (2) strategies advances detection nanoplastics; (3) applying real samples. We put our effort into summarization efficient substrates that essentially enable better extend discuss how reported nanoplastics pretreatment methodologies can bring analysis practical applications. A step moving forward is investigate problems challenges currently applied methods look at future research needs employing analysis.

Язык: Английский

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Role of fungi in bioremediation of emerging pollutants

Frontiers in Marine Science, Год журнала: 2023, Номер 10

Опубликована: Март 6, 2023

Advancements in chemical, medical, cosmetic, and plastic producing industries have improved agricultural yields, health human life general. As a negative consequence, plethora of chemicals are intentionally unintentionally released to terrestrial aquatic environments with sometimes devastating effects for entire ecosystems. One mitigation strategy counteract this pollution is bioremediation. Bioremediation an umbrella term biologically mediated processes during which undesired compound transformed, degraded, sequestered and/or entirely removed from the ecosystem. Organisms across all domains may mediate bioremediation; yet, fungi particularly promising candidates. They possess metabolic capabilities break down complex molecules make ultimate degraders recalcitrant organic matter nature. by fungi, also termed mycoremediation, has been more frequently investigated than ecosystems, although thrive lacustrine marine environments. Here, we focus on mycoremediation emerging pollutants In context, draw parallels between fungal taxa, their role mycoremediation. We discuss ability break-down (i) pesticides, (ii) pharmaceuticals personal care products, (iii) plastics, both conventional types (iv) bioplastics, role, (v) heavy metal pollution. Furthermore, (vi) possible strategies applied settings highlight novel enzyme based strategies.

Язык: Английский

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The environmental fate of nanoplastics: What we know and what we need to know about aggregation

NanoImpact, Год журнала: 2023, Номер 29, С. 100453 - 100453

Опубликована: Янв. 1, 2023

The presence of nanoplastics in the environment has been proven. There is now an urgent need to determine how behave and assess risks they may pose. Here, we examine nanoplastic homo- heteroaggregation, with a focus on environmentally relevant particle models. We made systematic analysis experimental studies, ranked environmental relevance 377 different solution chemistries, 163 Since polymer latex spheres are not (due their monodisperse size, spherical shape, smooth surface), aggregation behavior natural conditions transferable nanoplastics. A few recent studies suggest that models more closely mimic incidentally produced follow homoaggregation pathways than sphere However, heteroaggregation seldom studied. Despite this knowledge gap, current evidence suggests be sensitive previously expected. therefore provide updated hypothesis about likely fate Our review demonstrates it essential use models, such as those top-down methods, avoid biased interpretations impact Finally, will necessary kinetics settling rate truly understand nanoplastics' effect environment.

Язык: Английский

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Plastic photodegradation under simulated marine conditions

Marine Pollution Bulletin, Год журнала: 2023, Номер 187, С. 114544 - 114544

Опубликована: Янв. 12, 2023

Ocean plastic pollution is a problem of increasing magnitude; yet, the amount at sea surface much lower than expected. Solar ultraviolet (UV) radiation can induce photodegradation, but its importance in determining longevity floating remains unconstrained. Here, we measured photodegradation rates different types slightly larger microplastics (virgin polymers and debris) under simulated marine conditions. UV irradiation caused all to leach dissolved organic carbon, lesser degree carbon dioxide, monoxide, methane, other hydrocarbon gases. The release products translates degradation 1.7-2.3 % yr-1 tested particles normalized conditions as found subtropical ocean. Modelling accumulation debris, our results show that solar could already have degraded 7 22 has ever been released sea.

Язык: Английский

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Neurotoxicity and endocrine disruption caused by polystyrene nanoparticles in zebrafish embryo

The Science of The Total Environment, Год журнала: 2023, Номер 874, С. 162406 - 162406

Опубликована: Фев. 23, 2023

Nanoplastics (NP) are present in aquatic and terrestrial ecosystems. Humans can be exposed to them through contaminated water, food, air, or personal care products. Mechanisms of NP toxicity largely unknown the Zebrafish embryo poses an ideal model investigate due its high homology with humans. Our objective study was combine a battery behavioral assays endocrine related gene expression, further explore potential neurotoxic effects on animal behavior. Polystyrene nanoplastics (PSNP) were used evaluate toxicity. neurobehavioral profiles include tail coiling assay, light/dark activity two thigmotaxis anxiety (auditory visual stimuli), startle response - habituation assay auditory stimuli. Results show PSNP accumulated eyes, neuromasts, brain, digestive system organs. inhibited acetylcholinesterase altered endocrine-related expression both thyroid glucocorticoid axes. At whole organism level, we observed behaviors such as increased at lower doses lethargy higher dose, which could variety complex mechanisms ranging from sensory organ central nervous others hormonal imbalances. In addition, hypothetical adverse outcome pathway these effects. conclusion, this provides new understanding into toxic zebrafish embryo, emphasizing critical role disruption effects, improving our their health risks human populations.

Язык: Английский

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The impact of microplastics on bivalve mollusks: A bibliometric and scientific review

Marine Pollution Bulletin, Год журнала: 2023, Номер 194, С. 115271 - 115271

Опубликована: Июль 8, 2023

Язык: Английский

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Microplastics and nanoplastics size distribution in farmed mussel tissues

Communications Earth & Environment, Год журнала: 2024, Номер 5(1)

Опубликована: Март 15, 2024

Abstract Microplastics and nanoplastics are hazardous to ecosystems, wildlife, through seafood, also for human health. Due biological, chemical, physical characteristics, can slip cell membranes, being even more toxicologically important than microplastics. Thermal Desorption - Proton Transfer Reaction Mass Spectrometry was used analyze mussels from the Apulian region, Italy. All analyzed organisms have plastics (values ranging 10 187 ng of microplastics per dry weight mg). The highest mass detected in size groups >2.2 µm (218 mg) 20–200 nm (187 Upscaling data we estimated that people Europe could ingest 2 mg year seafood consumption. presence farmed here presented contributes establishing a baseline monitoring these pollutants.

Язык: Английский

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Neurotoxic effects of polystyrene nanoplastics on memory and microglial activation: Insights from in vivo and in vitro studies

The Science of The Total Environment, Год журнала: 2024, Номер 924, С. 171681 - 171681

Опубликована: Март 13, 2024

Nanoplastics, arising from the fragmentation of plastics into environmental pollutants and specialized commercial applications, such as cosmetics, have elicited concerns due to their potential toxicity. Evidence suggests that oral ingestion nanoplastics smaller than 100 nm may penetrate brain induce neurotoxicity. However, comprehensive research in this area has been hampered by technical challenges associated with detection synthesis nanoplastics. This study aimed bridge gap successfully synthesizing fluorescent polystyrene (PSNPs, 30–50 nm) through incorporation IR-813 validating them using various analytical techniques. We administered PSNPs orally (10 20 mg/kg/day) mice observed they reached tissues induced cognitive dysfunction, measured spatial fear memory tests, while locomotor social behaviors remained unaffected. In vitro studies (200 μg/mL) demonstrated a predominant uptake microglia over astrocytes or neurons, leading microglial activation, evidenced immunostaining cellular markers morphological analysis. Transcriptomic analysis indicated altered gene expression microglia, highlighting neuroinflammatory responses contribute deficits. To further explore neurotoxic effects mediated we endogenous neuronal activity multi-electrode array cultured hippocampal neurons. The application conditioned media exposed suppressed activity, which was reversed inhibitors activation. Our findings offer detailed insights mechanisms damage brain, particularly emphasizing risk factors impairment neurodegenerative diseases.

Язык: Английский

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Microplastics and nanoplastics toxicity assays: A revision towards to environmental-relevance in water environment

Journal of Hazardous Materials, Год журнала: 2023, Номер 454, С. 131476 - 131476

Опубликована: Апрель 23, 2023

Язык: Английский

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