Persistence and Recovery of Polystyrene and Polymethyl Methacrylate Microplastic Toxicity on Diatoms DOI Creative Commons
Chongchong Meng,

Huijie Yang,

Yuan Du

et al.

Toxics, Journal Year: 2025, Volume and Issue: 13(5), P. 376 - 376

Published: May 6, 2025

The increasing pollution of polystyrene (PS) and polymethyl methacrylate (PMMA) microplastics (MPs) has become a global marine environmental problem. Diatoms contribute nearly 40% primary productivity shape the nitrogen cycle in oceans. However, persistence phytotoxicity MPs on diatoms, especially assimilation, remains largely unknown. To examine PS PMMA toxicity two subexperiments (a 96 h exposure followed by recovery phase) were conducted Thalassiosira pseudonana at concentrations ranging from 0.001 to 1 mg/L. results showed that inhibited algal growth 3.76–6.49% 4.44–8.37%; increased oxidative stress 10.06–30.51% 30.46–38.12%; caused ultrastructural damage 14.24–25.56% 12.28–20%, respectively, consistent with downregulation glyoxylate, dicarboxylate metabolism, glutathione metabolism. At stage, density induced was significantly recoverable 0.01 mg/L, enhanced carbohydrate metabolisms. After recovery, cell permeability reactive oxygen species (ROS) levels decreased which closely related glycine, serine, threonine metabolism upregulation pantothenate coenzyme A biosynthesis. Moreover, inhibition assimilation enzymic activities recovered mg/L despite This study highlights phenomena mechanisms provides new insights for comprehensive understanding evaluation risks MPs.

Language: Английский

Morphological traits induce differences in energy accumulation in a migratory shorebird in the coastal wetlands of the Yellow Sea, China DOI
Wei Liu, Cheng Zhao, Pengfei Zhang

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137386 - 137386

Published: Jan. 1, 2025

Language: Английский

Citations

1
Airborne Microplastics: Challenges, Prospects, and Experimental Approaches DOI Creative Commons
Aleksey Rednikin, Yulia A. Frank, Artem Rozhin

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(11), P. 1380 - 1380

Published: Nov. 15, 2024

Airborne microplastics are emerging pollutants originating from disposable tableware, packaging materials, textiles, and other consumer goods. Microplastics vary in shape size exposed to external factors break down into even smaller fractions. abundant both urban natural environments, including water bodies glaciers, as particles can travel long distances. The potential toxicity of airborne cannot be underestimated. Microparticles, especially those < 10 µm, entering the human body through inhalation or ingestion have been shown cause serious adverse health effects, such chronic inflammation, oxidation stress, physical damage tissues, etc. adsorb toxic chemicals biopolymers, forming a polymer corona on their surface, affecting overall toxicity. In addition, also affect carbon dynamics ecosystems impact biochemical cycles. approaches improve sampling techniques develop standardized methods assess still far being perfect. mechanisms microplastic intracellular tissue transport not clear, is understood well. Reduced consumption followed by collection, reuse, recycling contribute solving problem. Combinations different filtration membrane bioreactors used optimize removal contaminants wastewater. this review we critically summarize existing literature microplastics, distribution, identification, safety assessment.

Language: Английский

Citations

6
Microplastics at the Ocean-Atmosphere Interface in Coastal Areas of Two Major Oceans DOI

Salvador Reynoso-Cruces,

Carlos Edo, Roberto Rosal

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Global atmospheric distribution of microplastics with evidence of low oceanic emissions DOI Creative Commons
Shanye Yang, Guy Brasseur,

Stacy Walters

et al.

npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 28, 2025

Language: Английский

Citations

0
Comparison of Microplastics between Lung Tissues and Intestinal Contents in Finless Porpoises (Neophocaena asiaeorientalis) DOI
Byeongyong Park, Young-Ran Lee, Tae Won Kim

et al.

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

Published: March 25, 2025

Microplastics are ubiquitous environmental pollutants in terrestrial, marine, and atmospheric ecosystems. Plastic inputs into the atmosphere occur through weathering or abrasion, dispersing microplastics globally, which can enter animals' respiratory systems inhalation. We analyzed lung tissues for first time intestinal contents of 11 dead finless porpoises (Neophocaena asiaeorientalis) to assess intake from prey sources. The contained average concentrations 0.14 ± 0.11 MPs/g 0.35 0.36 MPs/g, respectively. found were similar physical characteristics (e.g., fragment shape, transparent white color, size <100 μm). On other hand, they differed polymer types, with a higher proportion epoxy-type lungs. Epoxy is highly hazardous according hazard index, present study, had plastic index than contents. Hence, system more vulnerable microplastic pollution sources digestive water food intake. These findings underscore growing threat airborne lung-breathing animals including marine mammals.

Language: Английский

Citations

0
Persistence and Recovery of Polystyrene and Polymethyl Methacrylate Microplastic Toxicity on Diatoms DOI Creative Commons
Chongchong Meng,

Huijie Yang,

Yuan Du

et al.

Toxics, Journal Year: 2025, Volume and Issue: 13(5), P. 376 - 376

Published: May 6, 2025

The increasing pollution of polystyrene (PS) and polymethyl methacrylate (PMMA) microplastics (MPs) has become a global marine environmental problem. Diatoms contribute nearly 40% primary productivity shape the nitrogen cycle in oceans. However, persistence phytotoxicity MPs on diatoms, especially assimilation, remains largely unknown. To examine PS PMMA toxicity two subexperiments (a 96 h exposure followed by recovery phase) were conducted Thalassiosira pseudonana at concentrations ranging from 0.001 to 1 mg/L. results showed that inhibited algal growth 3.76–6.49% 4.44–8.37%; increased oxidative stress 10.06–30.51% 30.46–38.12%; caused ultrastructural damage 14.24–25.56% 12.28–20%, respectively, consistent with downregulation glyoxylate, dicarboxylate metabolism, glutathione metabolism. At stage, density induced was significantly recoverable 0.01 mg/L, enhanced carbohydrate metabolisms. After recovery, cell permeability reactive oxygen species (ROS) levels decreased which closely related glycine, serine, threonine metabolism upregulation pantothenate coenzyme A biosynthesis. Moreover, inhibition assimilation enzymic activities recovered mg/L despite This study highlights phenomena mechanisms provides new insights for comprehensive understanding evaluation risks MPs.

Language: Английский

Citations

0