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61,005 resultsShowing papers similar to Toxic effects of tetracycline-adsorbed polystyrene microplastics on E. coli
ClearAssessment of bioavailability of microplastic-sorbed tetracycline to bacteria for activation of antibiotic resistance genes in water environments
Researchers examined whether antibiotics adsorbed onto microplastics retain their biological activity against bacteria in water environments. They found that tetracycline bound to microplastic surfaces remained bioavailable enough to promote the activation of antibiotic resistance genes in aquatic bacteria. The study suggests that microplastics carrying adsorbed antibiotics may contribute to the spread of antimicrobial resistance in water systems rather than simply immobilizing the drugs.
Sorption of tetracycline antibiotics by microplastics, associated mechanisms, and risk assessments
Researchers systematically investigated how three common microplastic types adsorb tetracycline antibiotics. The study found that polystyrene had the highest adsorption capacity at 178.57 micrograms per gram, followed by PVC and polyethylene, and that PVC and polystyrene strongly retained the antibiotics with minimal desorption, raising concerns about compound pollution from microplastic-antibiotic combinations in the environment.
Adsorption characteristics of antibiotics on microplastics: The effect of surface contamination with an anionic surfactant
Researchers found that the common anionic surfactant SDBS coating polystyrene and polyethylene microplastics significantly altered their adsorption of the antibiotics oxytetracycline and norfloxacin. SDBS changed the surface charge and hydrophobicity of MPs in ways that increased antibiotic binding, suggesting surfactant-contaminated MPs pose a greater risk as antibiotic vectors in aquatic environments.
Combined pollution of tetracyclines and microplastics in the aquatic environment: Insights into the occurrence, interaction mechanisms and effects
This review examines how microplastics and tetracycline antibiotics interact in water environments, since microplastics can absorb and carry antibiotics on their surfaces. Factors like pH, heavy metals, and organic matter in water influence how tightly antibiotics bind to microplastics, and the combined pollution is more harmful to aquatic life than either pollutant alone. This is relevant to human health because these microplastic-antibiotic combinations can enter drinking water supplies and promote antibiotic resistance.
Microplastics play a minor role in tetracycline sorption in the presence of dissolved organic matter
Researchers studied the sorption of the antibiotic tetracycline onto microplastics in the presence of dissolved organic matter, finding that dissolved organics competed strongly for binding sites on microplastics, meaning real-world conditions substantially reduce microplastic uptake of tetracycline.
The stress response of tetracycline resistance genes and bacterial communities under the existence of microplastics in typical leachate biological treatment system
Researchers studied how polystyrene and polyethylene microplastics affect tetracycline resistance genes and bacterial communities in a leachate biological treatment system. They found that microplastics served as hotspots for antibiotic resistance genes, with biofilms on the plastic surfaces harboring significantly higher gene abundances than the surrounding liquid. The study suggests that microplastics in waste treatment systems may accelerate the spread of antibiotic resistance.
Tetracycline adsorption trajectories on aged polystyrene in a simulated aquatic environment: A mechanistic investigation
Researchers found that aging of polystyrene microplastics in simulated aquatic environments progressively altered their surface properties and enhanced tetracycline antibiotic adsorption over time, with pseudo-second-order kinetics best describing the process, highlighting how weathered microplastics may increase antibiotic transport in aquatic systems.
Aged microplastics enhance their interaction with ciprofloxacin and joint toxicity on Escherichia coli
Researchers found that aged microplastics showed enhanced adsorption of the antibiotic ciprofloxacin compared to pristine particles, and that their combined exposure produced greater toxicity to E. coli at the molecular level than either pollutant alone.
Insights into behavior and mechanism of tetracycline adsorption on virgin and soil-exposed microplastics
Researchers studied how common microplastics absorb the antibiotic tetracycline, finding that soil-exposed plastics absorbed significantly more than fresh ones, with polylactic acid showing the greatest increase at 88%. The study revealed that environmental weathering changes how microplastics interact with antibiotics through different physical and chemical mechanisms. These findings are important for understanding how microplastics may carry and spread antibiotic contamination in soil environments.
Chlorination-improved adsorption capacity of microplastics for antibiotics: A combined experimental and molecular mechanism investigation
Researchers found that when microplastics go through chlorine disinfection in water treatment plants, they become better at absorbing antibiotics like tetracycline. Chlorination changes the surface of polystyrene microplastics, making them stickier for these drugs through stronger chemical bonding. This means treated wastewater may contain microplastics loaded with antibiotics, potentially increasing health risks when released into the environment.
The Complex Toxicity of Tetracycline with Polystyrene Spheres on Gastric Cancer Cells
Polystyrene nanoplastics and microplastics adsorbed the antibiotic tetracycline, and both the plastics alone and the plastic-tetracycline complexes caused oxidative stress, DNA damage, and cell death in gastric cancer cells, with nanoplastics being more toxic than microplastics. The combined toxicity of antibiotic-loaded nanoplastics warrants attention given the growing co-occurrence of plastics and pharmaceuticals in aquatic environments.
Implications of polystyrene and polyamide microplastics in the adsorption of sulfonamide antibiotics and their metabolites in water matrices
Researchers found that polystyrene and polyamide microplastics can absorb sulfonamide antibiotics from water, with smaller particles and acidic conditions increasing absorption significantly. This means microplastics in the environment can act as carriers for antibiotics, potentially spreading antimicrobial resistance. The finding raises concerns because people may be exposed to both microplastics and the drugs they carry through contaminated water and food.
Ecotoxicological Effects of Microplastics Combined With Antibiotics in the Aquatic Environment: Recent Developments and Prospects
This review examines how microplastics and antibiotics interact in water environments, finding that microplastics can absorb antibiotics onto their surfaces and carry them over long distances. When aquatic organisms encounter these antibiotic-laden microplastics, the combined toxicity can be worse than either pollutant alone. Microplastics also promote the spread of antibiotic resistance genes, which is a growing public health concern.
Adsorption of antibiotics on microplastics
This study examined the adsorption of antibiotics onto different microplastic types, finding that sorption capacity depended on both the antibiotic's chemical properties and the plastic's surface characteristics, with implications for antibiotic transport in aquatic environments.
Interaction of Microplastics with Antibiotics in Aquatic Environment: Distribution, Adsorption, and Toxicity
This review examines how microplastics and antibiotics interact in waterways, finding that microplastics can absorb antibiotics from the water and change their availability and toxicity to aquatic organisms. Critically, microplastics also provide surfaces where antibiotic resistance genes can accumulate and spread among bacteria. This is concerning for human health because it means microplastics in water could be accelerating the spread of antibiotic-resistant infections.
Impact of sequential UV-aging of microplastics on the fate of antibiotic (tetracycline) in riverine, estuarine, and marine systems
Researchers studied how sequential UV aging of polystyrene, polypropylene, and polyethylene microplastics, which mimics natural weathering, affects their ability to adsorb the antibiotic tetracycline under different water chemistry conditions. They found that aged microplastics adsorbed significantly more tetracycline than pristine particles, with the effect varying by water type and plastic polymer. The study suggests that as microplastics weather in the environment, they may become increasingly effective at carrying antibiotic contaminants.
Effect of microplastics on oxytetracycline trophic transfer: Immune, gut microbiota and antibiotic resistance gene responses
When polypropylene microplastics and the antibiotic oxytetracycline were present together in water, the microplastics acted as carriers that increased antibiotic buildup in shrimp and fish through the food chain. This combination caused more gut and liver damage, weakened immune defenses, and promoted the spread of antibiotic-resistant bacteria. The findings highlight that microplastics can make antibiotic pollution worse by helping resistant genes move up the food chain.
Adsorption interactions between typical microplastics and enrofloxacin: Relevant contributions to the mechanism
This study investigated how common microplastics (polyethylene, PVC, and polystyrene) absorb the antibiotic enrofloxacin from the environment. The researchers found that microplastics can effectively bind antibiotics through multiple chemical mechanisms, with the strength of binding depending on water conditions like acidity. This is concerning because microplastics carrying antibiotics could transport them into the food chain, potentially contributing to antibiotic resistance and affecting human health.
Interactions of microplastics and organic compounds in aquatic environments: A case study of augmented joint toxicity
Researchers investigated how polystyrene microplastics interact with the antimicrobial compound triclosan in simulated environmental and cellular conditions. They found that surface-functionalized microplastics adsorbed significantly more triclosan and released it under cellular conditions, with the combination producing greater toxicity to human intestinal cells than either contaminant alone. The study suggests that microplastics can amplify the harmful effects of co-occurring organic pollutants.
Investigation of antibiotic clarithromycin adsorption potential on microplastics
Researchers investigated the adsorption potential of the antibiotic clarithromycin onto various microplastic types under controlled laboratory conditions, examining how surface properties and environmental factors influence pharmaceutical-microplastic interactions. The study found that microplastics can adsorb clarithromycin, raising concern about microplastics acting as vectors for antibiotic transport and spread in aquatic environments.
Adsorption of Macrolide Antibiotics and a Metabolite onto Polyethylene Terephthalate and Polyethylene Microplastics in Aquatic Environments
Researchers studied how four macrolide antibiotics and a metabolite adsorb onto polyethylene terephthalate and polyethylene microplastics in water. They found that antibiotic adsorption followed a linear model, with PET showing higher adsorption capacity than polyethylene. The study suggests that microplastics in aquatic environments may serve as carriers for antibiotics, potentially affecting how these pharmaceutical pollutants are distributed in water systems.
Sorption of antibiotics onto aged microplastics in freshwater and seawater
Aged microplastics were found to sorb antibiotics from fresh and saltwater, with aging processes altering the surface properties of the plastic and increasing antibiotic binding capacity in some cases. The adsorption of antibiotics onto aged microplastics could facilitate their transport and delivery to aquatic organisms, potentially contributing to antibiotic resistance in environmental bacteria.
The impact of chlorination on the tetracycline sorption behavior of microplastics in aqueous solution
Researchers found that chlorination, a common disinfection step in wastewater treatment, alters the surface chemistry of microplastics and changes their capacity to adsorb tetracycline antibiotics, with chlorinated microplastics showing modified sorption behavior that affects their role as antibiotic carriers.
Sorption behavior of oxytetracycline on microplastics and the influence of environmental factors in groundwater: Experimental investigation and molecular dynamics simulation
This study examined how oxytetracycline antibiotic adsorbs onto different types of microplastics and how environmental factors such as pH, salinity, and UV exposure influence sorption behavior. The findings indicate microplastics can act as vectors transporting antibiotics through aquatic environments.