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61,005 resultsShowing papers similar to Single and combined effects of amino polystyrene and perfluorooctane sulfonate on hydrogen-producing thermophilic bacteria and the interaction mechanisms.
ClearDistinct responses of Pseudomonas aeruginosa PAO1 exposed to different levels of polystyrene nanoplastics
Researchers examined the molecular mechanisms by which polystyrene nanoplastics affect Pseudomonas aeruginosa, finding dose-dependent responses in growth, metabolism, and virulence gene expression that reveal how nanoplastics interact with environmentally relevant bacteria.
Nanoplastics drive toxicity under co-exposure with perfluorooctanesulfonic acid in human intestinal cells
Researchers exposed human intestinal cells to nanoplastics, the industrial chemical PFOS, and their combination, and found that co-exposure caused more severe cellular disruption than either substance alone. Nanoplastics primarily damaged mitochondria while PFOS affected cell membranes and internal structures, and their combination triggered broader metabolic changes including disrupted amino acid and lipid metabolism. The study suggests that the interaction between nanoplastics and common environmental chemicals may pose compounding risks to gut health.
When polyethylene terephthalate microplastics meet Perfluorooctane sulfonate in thermophilic biogas upgrading system: Their effect on methanogenesis
This study examined how PET microplastics and PFOS (a forever chemical) interact in a biogas treatment system that converts carbon dioxide to methane. Rather than harming the process, both pollutants actually improved methane production, and some PFOS was broken down when iron was added. While focused on waste treatment rather than health, the findings are relevant because they show how microplastics and forever chemicals behave together in waste streams, which affects how these pollutants are managed before reaching the environment.
Microplastics magnify inhibitive effects of perfluorooctanoic acid on the marine microbial loop
Researchers studied how microplastics interact with a common industrial chemical called PFOA in ocean ecosystems. They found that polystyrene microplastics significantly amplified the harmful effects of PFOA on tiny marine organisms essential to carbon cycling, including bacteria and plankton. The study suggests that when these two pollutants co-exist in seawater, the ecological risks are considerably worse than from either pollutant alone.
Toxicological effects of polystyrene nanoplastics and perfluorooctanoic acid to Gambusia affinis
Researchers found that co-exposure to polystyrene nanoplastics and perfluorooctanoic acid (PFOA) produced interactive toxicological effects in mosquitofish, with nanoplastics altering PFOA bioaccumulation and causing liver damage and oxidative stress.
Uncovering the toxic effects and adaptive mechanisms of aminated polystyrene nanoplastics on microbes in sludge anaerobic digestion system: Insight from extracellular to intracellular
Researchers investigated how nanoplastics with amino functional groups affect the anaerobic digestion process used to treat sewage sludge. They found that these surface-modified nanoplastics reduced methane production and disrupted the microbial communities responsible for breaking down waste. The study reveals that chemically modified nanoplastics may be more disruptive to wastewater treatment processes than unmodified particles.
Polystyrene nanoparticles regulate microbial stress response and cold adaptation in mainstream anammox process at low temperature
Researchers found that polystyrene nanoplastics at concentrations above 0.5 mg/L significantly impair nitrogen removal by anammox bacteria (microbes that convert ammonia to nitrogen gas) in wastewater treatment, with nanoplastics inducing oxidative stress, damaging cell membranes, and binding to cold-shock proteins that are critical for low-temperature bacterial performance.
Polystyrene nanoplastics shape microbiome and functional metabolism in anaerobic digestion
Researchers studied how polystyrene nanoplastics and microplastics affect the microbial communities and biochemical processes in anaerobic digestion systems used for waste treatment. They found that nanoplastics had a more disruptive effect than microplastics, significantly altering the composition and metabolic functions of the microbial community. The study suggests that plastic contamination in waste streams could reduce the efficiency of anaerobic digestion, a widely used waste processing technology.
Interfacial effects of perfluorooctanoic acid and its alternative hexafluoropropylene oxide dimer acid with polystyrene nanoplastics on oxidative stress, histopathology and gut microbiota in Crassostrea hongkongensis oysters
Researchers exposed oysters to polystyrene nanoplastics combined with PFAS chemicals (including the GenX replacement for PFOA) and found that the combination caused worse oxidative stress, tissue damage, and gut bacteria disruption than any single pollutant. The newer GenX chemical was not safer than the older PFOA it was designed to replace when combined with nanoplastics. Since oysters are eaten raw by humans, these findings raise concerns about the combined effects of multiple pollutants accumulating in shellfish.
A tale of two emerging contaminants: Interfacial interactions, co-transport behaviors and ecotoxicological implications between per-and polyfluoroalkyl substances and micro(nano)plastics.
This review examined how PFAS and micro/nanoplastics co-occur in the environment, form interfacial adsorption complexes, and interact synergistically within organisms. The authors found that the two contaminant classes amplify each other's toxicity in co-exposure scenarios and that their shared transport pathways complicate standard risk assessment.
Impact of polystyrene nanoplastics on primary sludge fermentation under acidic and alkaline conditions: Significance of antibiotic resistance genes
Researchers studied how polystyrene nanoplastics affect the fermentation of sewage sludge at different pH levels. They found that low doses stimulated hydrogen gas production while higher concentrations suppressed it, and that nanoplastic exposure promoted the spread of antibiotic resistance genes in the microbial community. The findings raise concerns about nanoplastics in wastewater systems potentially contributing to the broader problem of antibiotic resistance.
The surface groups of polystyrene nanoparticles control their interaction with the methanogenic archaeon Methanosarcina acetivorans
Researchers found that the surface functional groups of polystyrene nanoparticles critically control their interaction with the methanogenic archaeon Methanosarcina acetivorans, influencing membrane integrity and methane production, with implications for understanding nanoplastic effects on global methane cycling.
Insights on the inhibition of anaerobic digestion performances under short-term exposure of metal-doped nanoplastics via Methanosarcina acetivorans
The inhibitory effects of polystyrene nanoplastics on anaerobic digestion performance were investigated at the molecular level, focusing on methanogen-nanoplastic interactions in granular sludge. The study provided direct evidence that nanoplastics disrupt methane-producing archaea, identifying a mechanism by which nanoplastic contamination reduces biogas production from organic waste treatment.
Deciphering the inhibitory mechanisms of polystyrene microplastics on thermophilic methanogens from the insights of microbial metabolite profiling and metagenomic analyses
Researchers studied how polystyrene microplastics affect methane production during the thermophilic anaerobic digestion of food waste. They found that increasing microplastic concentrations reduced methane yield by up to 47.8%, driven by the accumulation of reactive oxygen species that inhibited key enzymes in the digestion process. Metagenomic analysis revealed that microplastics downregulated genes involved in methane metabolism, providing new insights into how plastic contamination can disrupt waste treatment systems.
Polystyrene and polytetrafluoroethylene nanoplastics affect probiotic bacterial characteristics and penetrate their cellular membrane
This study found that polystyrene and PTFE nanoplastics damage the membranes and viability of probiotic bacteria in ways that differ by particle surface chemistry and bacterial strain. Since gut microbiome stability depends on these beneficial bacteria, this research suggests that nanoplastic ingestion could undermine the health benefits of probiotics and more broadly disrupt the gut microbial community.
Interactive effects of polystyrene nanoplastics and 6:2 chlorinated polyfluorinated ether sulfonates on the histomorphology, oxidative stress and gut microbiota in Hainan Medaka (Oryzias curvinotus)
Researchers exposed a freshwater fish species to nanoplastics and a fluorinated chemical pollutant, both alone and in combination, and found that the mixture caused more severe tissue damage than either substance alone. The combined exposure harmed gills, liver, and intestines while disrupting antioxidant systems and gut bacteria. The study suggests nanoplastics can worsen the effects of industrial chemicals on aquatic life.
Trophic transfer and interfacial impacts of micro(nano)plastics and per-and polyfluoroalkyl substances in the environment.
This review examined the co-occurrence, trophic transfer, and interactions of micro(nano)plastics and PFAS (per- and polyfluoroalkyl substances) in the environment, highlighting how their combined persistence and toxicity create compounding risks for ecosystems and human health.
Polystyrene nanoplastics and pathogen plasticity: Toxic threat or tolerated stressor in Salmonella enterica?
Researchers examined how polystyrene nanoplastics affect Salmonella enterica, a major foodborne pathogen, across a range of concentrations. They found that nanoplastics induced oxidative stress, membrane damage, and increased biofilm formation, while also triggering early activation of virulence and stress-response genes. The study suggests that nanoplastic pollution in the environment could alter bacterial survival strategies and potentially influence food safety risks.
Combined toxicity of polystyrene microplastics and ammonium perfluorooctanoate to Daphnia magna: Mediation of intestinal blockage
Researchers evaluated the combined toxicity of polystyrene microplastics and a perfluorinated compound (ammonium perfluorooctanoate) to Daphnia magna using multiple toxicity assessment methods. They found that the interaction between microplastics and the fluorinated chemical produced antagonistic effects at some concentrations and synergistic effects at others, mediated partly by intestinal blockage from the plastic particles. The study reveals that microplastics can alter the bioavailability and toxicity of co-occurring fluorinated contaminants through physical mechanisms in the gut.
Combined toxic effects of polypropylene and perfluorooctanoic acid on duckweed and periphytic microorganisms
Duckweed was exposed to polypropylene microplastics and perfluorooctanoic acid (PFOA) individually and in combination for 14 days, finding that combined treatment increased oxidative stress markers and altered periphytic microbial communities even when plant growth was unaffected. The results reveal interactive toxicity between co-occurring plastic particles and PFAS pollutants.
Effects of unmodified and amine-functionalized polystyrene nanoplastics on nitrogen removal by Pseudomonas stutzeri: strain characteristics, extracellular polymers, and transcriptomics
Researchers investigated how two types of polystyrene nanoplastics — plain and amine-modified — affect the ability of bacteria to remove nitrogen from water, a process important for wastewater treatment. The amine-coated nanoplastics were found to be more disruptive than unmodified ones, altering the bacteria's cell surface, extracellular proteins, and gene expression. This matters because nanoplastics entering wastewater systems could undermine the biological processes that keep treated water safe to release into the environment.
Hydrophobic interaction between nanoplastics and surfactant antagonistically shielding the toxicity of surfactant to syntrophic methanogenesis
Researchers found that polypropylene nanoplastics can partially counteract the toxicity of the surfactant SDS on methane-producing microbial communities by acting as a hydrophobic carrier that sequesters SDS molecules and reduces their ability to damage microbial cell membranes.
Growth and membrane stress responses in E. coli and Acinetobacter sp. upon exposure to functionalized polystyrene microplastics
Researchers exposed E. coli and Acinetobacter bacteria to polystyrene microplastics with different surface chemistries, finding that surface functionalization strongly influenced MP toxicity, with some functionalized particles disrupting bacterial membrane integrity and biofilm formation more than non-functionalized particles.
Toxicities of polystyrene nano- and microplastics toward marine bacterium Halomonas alkaliphila
Polystyrene nano- and microplastics were found to be toxic to the marine bacterium Halomonas alkaliphila, with nanoplastics causing more severe membrane damage and oxidative stress than microplastics of equivalent mass. The results highlight that nanoplastics may pose greater risks to marine microbial communities than larger particles, with potential cascading effects on ocean biogeochemical cycles.