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61,005 resultsShowing papers similar to Polystyrene\nNanoplastics Inhibit the Transformation\nof Tetrabromobisphenol A by the Bacterium Rhodococcus jostii
ClearPolystyrene\nNanoplastics Inhibit the Transformation\nof Tetrabromobisphenol A by the Bacterium Rhodococcus jostii
This study found that polystyrene nanoplastics interfere with a bacterium's ability to break down tetrabromobisphenol A, a common flame retardant and environmental contaminant. Nanoplastics adsorbed the chemical onto their surface, reducing its bioavailability, while also causing oxidative stress in the bacteria and disrupting the enzymes needed for biodegradation.
Polystyrene\nNanoplastics Inhibit the Transformation\nof Tetrabromobisphenol A by the Bacterium Rhodococcus jostii
This study found that polystyrene nanoplastics interfere with a bacterium's ability to break down tetrabromobisphenol A, a common flame retardant and environmental contaminant. Nanoplastics adsorbed the chemical onto their surface, reducing its bioavailability, while also causing oxidative stress in the bacteria and disrupting the enzymes needed for biodegradation.
Polystyrene Nanoplastics Inhibit the Transformation of Tetrabromobisphenol A by the Bacterium Rhodococcus jostii
Researchers found that polystyrene nanoplastics can inhibit the bacterial transformation of the flame retardant tetrabromobisphenol A in a concentration-dependent manner, both by adsorbing the pollutant and by inducing oxidative stress in the bacterium Rhodococcus jostii.
Insights into the influence of polystyrene microplastics on the bio-degradation behavior of tetrabromobisphenol A in soil
Researchers investigated how aged polystyrene microplastics affect the breakdown of the flame retardant TBBPA in soil. The study found that aged microplastics slowed TBBPA degradation by about 22%, reduced beneficial soil enzyme activity, and shifted microbial communities, suggesting that weathered microplastics may worsen soil contamination problems.
Polystyrene nanoparticles induce biofilm formation in Pseudomonas aeruginosa
Researchers found that polystyrene nanoparticles caused the common bacterium Pseudomonas aeruginosa to form thicker biofilms and become more resistant to antibiotics. The nanoplastics damaged bacterial cell membranes and triggered a stress response, prompting the bacteria to produce more protective biofilm as a defense mechanism. This is concerning for human health because it suggests nanoplastic pollution could make disease-causing bacteria harder to treat with existing antibiotics.
Polystyrene nanoplastics foster Escherichia coli O157:H7 growth and antibiotic resistance with a stimulating effect on metabolism
Researchers found that polystyrene nanoplastics promoted the growth and antibiotic resistance of pathogenic E. coli O157:H7 by stimulating bacterial metabolism, raising concerns about increased contamination risks in aquatic environments.
Adsorption behaviors and bioavailability of tetrabromobisphenol A in the presence of polystyrene microplastic in soil: Effect of microplastics aging
Researchers studied how aging changes the ability of polystyrene microplastics to absorb and release a flame retardant chemical called TBBPA in soil. They found that aged microplastics had a greater capacity to adsorb the chemical but also released it more readily, increasing the bioavailability of this toxic compound to soil organisms. The study reveals that as microplastics weather in the environment, they may actually become more effective carriers of harmful chemicals into the food chain.
Association of tetrabromobisphenol A (TBBPA) with micro/nano-plastics: A review of recent findings on ecotoxicological and health impacts
This review examines how tetrabromobisphenol A (TBBPA), a widely used flame retardant found in plastic products, binds to micro and nanoplastics in the environment. When TBBPA hitches a ride on microplastics, the combined effect on organisms and ecosystems is often worse than either contaminant alone. Since TBBPA is an additive in many plastic products, the findings highlight how microplastics can carry harmful chemicals directly into the body.
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.
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.
Pseudomonas Stutzeri may alter the environmental fate of polystyrene nanoplastics by trapping them with increasing extracellular polymers
Researchers found that the denitrifying bacterium Pseudomonas stutzeri physically traps polystyrene nanoplastics within secreted extracellular polymers, which impairs bacterial growth and nitrogen removal gene expression while altering the particles' environmental fate and dispersal.
Nanoplastics impacts on Thiobacillus denitrificans: Effects of size and dissolved organic matter
Researchers found that 100 nm polystyrene nanoplastics inhibited growth and denitrification ability of Thiobacillus denitrificans more than 350 nm particles, and that dissolved organic matter modulated nanoplastic bioavailability and toxicity in sewage systems.
Size-dependent influences of nanoplastics on microbial consortium differentially inhibiting 2, 4-dichlorophenol biodegradation
Researchers investigated how different sizes of polystyrene nanoplastics affect microbial communities responsible for breaking down the pollutant 2,4-dichlorophenol in wastewater. They found that smaller nanoplastics caused greater disruption to the microbial consortium, significantly reducing its ability to biodegrade the chemical contaminant. The study suggests that nanoplastic pollution in wastewater systems could interfere with the natural biological processes used to clean up other pollutants.
Impact of polystyrene nanoplastics on the biodegradation of a polyhydroxyalkanoate and its associated biofilm
Lab experiments in natural seawater found that polystyrene nanoplastics do not significantly slow the biodegradation of a compostable bioplastic (PHA), but they do become physically trapped inside the microbial biofilm that forms on the plastic surface, suggesting marine biofilms act as temporary holding zones for nanoplastics. At lower nanoplastic concentrations, microbial diversity within biofilms was higher, indicating even modest nanoplastic levels can subtly reshape the communities of microbes responsible for breaking down plastic in the ocean.
Sorption of tetrabromobisphenol A onto microplastics: Behavior, mechanisms, and the effects of sorbent and environmental factors
The sorption of the flame retardant tetrabromobisphenol-A (TBBPA) onto four types of microplastics — polyethylene, polypropylene, polystyrene, and polyvinyl chloride — was studied in aqueous environments. Results revealed that polymer type, surface area, and hydrophobic interactions were key factors controlling how much TBBPA accumulates on microplastic surfaces.
Identification of the bacterial community that degrades phenanthrene sorbed to polystyrene nanoplastics using DNA-based stable isotope probing
Researchers used DNA-based stable isotope probing to identify marine bacteria that can break down chemical pollutants sorbed onto polystyrene nanoplastics. They found that specific bacterial taxa in coastal seawater could degrade phenanthrene, a common petrochemical, when it was attached to plastic particle surfaces. The study reveals that the microbial communities colonizing ocean plastics may play an active role in processing harmful chemicals that accumulate on these particles.
Detrimental effects of individual versus combined exposure to tetrabromobisphenol A and polystyrene nanoplastics in fish cell lines
Researchers tested how combined exposure to the flame retardant tetrabromobisphenol A and polystyrene nanoparticles affects freshwater fish cells. They found that co-exposure to even low concentrations of both pollutants caused subtle changes in cell viability and generated oxidative DNA damage. The study suggests that the interaction between nanoplastics and chemical pollutants in aquatic environments may pose compounding risks to fish health.
Binding of Tetrabromobisphenol A and S to Human Serum Albumin Is Weakened by Coexisting Nanoplastics and Environmental Kosmotropes
Researchers studied how polystyrene nanoplastics interact with human serum albumin and brominated flame retardants (TBBPA and TBBPS) under various conditions. The study found that while the protein helped disperse nanoplastics alone, adding flame retardants promoted aggregate formation, with environmental salt conditions further influencing these interactions. These findings suggest that the behavior of nanoplastics and co-occurring pollutants in both biological and natural water systems may be more complex than previously understood.
Impacts of Polystyrene Nanoplastics on Fisheries Biology and Prospective Remediation Approaches in Aquatic Ecosystems
This review examines how polystyrene nanoplastics affect fish biology, including physiology, behavior, and reproductive health. The study highlights that nanoplastics cause oxidative stress, inflammation, endocrine disruption, and bioaccumulation in fish species, and that these effects can be amplified when nanoplastics interact with other environmental stressors such as pesticides and heavy metals.
Distinct 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.
The combined toxicity of polystyrene nano/micro-plastics and triphenyl phosphate (TPHP) on HepG2 cells
This study found that polystyrene nanoplastics and microplastics made a common flame retardant chemical (TPHP) more toxic to human liver cells than the chemical alone. The nanoplastics absorbed the flame retardant and delivered it to cells, causing increased oxidative stress, mitochondrial damage, and cell death. Smaller nanoplastics caused more harm than larger microplastics, suggesting that as plastics break down into smaller pieces, their ability to carry toxic chemicals into human cells increases.
Insights into the interaction mechanism of ofloxacin and functionalized nano-polystyrene.
This study investigated how the antibiotic ofloxacin interacts with functionalized polystyrene nanoplastics, finding that surface charge and functional groups on the nanoplastics strongly influenced binding strength and mechanisms. The results improve understanding of how nanoplastics can act as carriers for antibiotics in the environment, potentially altering their fate and biological effects.
Dose-Dependent Responses of Escherichia coli and Acinetobacter sp. to Micron-Sized Polystyrene Microplastics
Researchers exposed E. coli and Acinetobacter sp. to 1,040 nm polystyrene microplastics across a range of concentrations and assessed growth, oxidative stress, membrane integrity, and biofilm formation. Both species showed concentration-dependent decreases in growth and cell viability, increased oxidative stress markers, impaired membrane integrity, and enhanced biofilm formation, demonstrating microplastic toxicity to environmental and human-associated bacteria.
Does triclosan adsorption on polystyrene nanoplastics modify the toxicity of single contaminants?
Researchers investigated whether triclosan adsorption onto polystyrene nanoplastics modifies the toxicity of each contaminant individually, using a multi-tiered approach to assess how nanoplastic carrier effects alter the combined hazard of this common antimicrobial agent in aquatic environments.