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61,005 resultsShowing papers similar to Microbubble-microplastic interactions in batch air flotation
ClearFrom Interface to Cell: The Complex Interaction and Transfer Process Coupling Mechanism between Microplastics and Antibiotic Resistance Genes
Researchers examined how microplastic surfaces act as vectors for spreading antibiotic resistance genes in wastewater treatment systems. The study found that aged microplastics of PET, PE, and PP promoted bacterial adhesion, enhanced horizontal gene transfer, and triggered overproduction of reactive oxygen species, ultimately amplifying the spread of antimicrobial resistance through multiple molecular mechanisms.
Microplastic pollution increases gene exchange in aquatic ecosystems
Researchers found that microplastics in aquatic environments serve as surfaces where bacteria form biofilms and exchange genes at higher rates than free-living bacteria. The study demonstrated increased transfer of antibiotic resistance genes among a wide range of bacterial species growing on microplastic particles. The findings suggest that microplastic pollution could accelerate the spread of antibiotic resistance in waterways, posing a potential hazard to both ecosystems and human health.
A review focusing on mechanisms and ecological risks of enrichment and propagation of antibiotic resistance genes and mobile genetic elements by microplastic biofilms
This review examines how microplastics in water serve as surfaces for bacterial biofilms that harbor antibiotic resistance genes. The biofilms that form on microplastic surfaces can spread resistance genes to other bacteria and potentially to organisms that ingest them, including fish and ultimately humans. The authors highlight that microplastic-associated antibiotic resistance is an underappreciated public health risk that needs more research.
Microplastic biofilm as hotspots of antibiotic resistance genes and potential pathogens
This review examined how microplastic biofilms—the plastisphere—serve as hotspots for antibiotic resistance gene (ARG) accumulation and potential pathogen enrichment. The authors described mechanisms by which microplastic surfaces promote horizontal gene transfer and bacterial community shifts that favor ARG-carrying strains, raising concern that microplastics accelerate the spread of antibiotic resistance in aquatic environments.
[Influencing Factors and Mechanisms of Antibiotic Resistance Gene Enrichment by Microplastics in the Environment].
This review examines how microplastics in the environment serve as carriers for antibiotic resistance genes, enriching and spreading resistant bacteria across air, soil, water, and sediments. Researchers found that the type, surface characteristics, and aging of microplastics all influence how effectively they accumulate resistance genes and facilitate horizontal gene transfer. The findings highlight the need to consider microplastics as an important vector in the environmental spread of antibiotic resistance.
Microplastics pollution in the ocean: Potential carrier of resistant bacteria and resistance genes
This review examined microplastics in marine environments as carriers of antibiotic-resistant bacteria and resistance genes, finding that plastic surfaces selectively enrich resistance genes through horizontal gene transfer and co-selection pressure, making ocean microplastics a vector for resistance dissemination across ecosystems.
Conjugative antibiotic-resistant plasmids promote bacterial colonization of microplastics in water environments
Antibiotic-resistant bacteria carrying conjugative plasmids were shown to more effectively colonize microplastic surfaces in water environments, with plasmid transfer rates on plastic surfaces exceeding those in the surrounding water. The study identifies microplastics as hotspots for the spread of antibiotic resistance genes through horizontal gene transfer in aquatic systems.
Microplastic biofilms promote the horizontal transfer of antibiotic resistance genes in estuarine environments
Researchers compared how effectively antibiotic resistance genes transfer between bacteria floating freely in water versus bacteria living in biofilms on microplastic surfaces. They found that microplastic biofilms significantly enhanced the transfer of resistance genes compared to free-floating bacteria, with factors like extracellular DNA and cell membrane permeability playing key roles. The study suggests that microplastics in estuaries may act as hotspots for spreading antibiotic resistance in the environment.
Antagonistic effects of microplastic biofilms on antibiotic resistance gene horizontal transfer in water environments
Microplastics in water environments accumulate bacteria on their surfaces, forming biofilms that were long assumed to accelerate the spread of antibiotic resistance genes between microbes. This study challenges that assumption by showing that microplastic biofilms can actually reduce the rate of antibiotic resistance gene transfer compared to free-floating bacteria — dampening both the promoting effect of certain chemicals and the inhibiting effect of others. The finding adds important nuance to the debate about microplastics as vectors for antibiotic resistance, suggesting the relationship is more complex than a simple amplifier.
Biofilms: hot spots of horizontal gene transfer (HGT) in aquatic environments, with a focus on a new HGT mechanism
This review covers horizontal gene transfer in aquatic biofilms, with emphasis on antibiotic resistance gene spread, and introduces membrane vesicles as a newly recognized HGT mechanism by which bacteria share genetic material, with implications for understanding resistance spread on microplastic surfaces.
New insight into the effect of microplastics on antibiotic resistance and bacterial community of biofilm
Researchers found that different types of microplastics promote distinct biofilm communities and enhance antibiotic resistance gene proliferation compared to natural substrates, suggesting microplastics serve as unique platforms for the spread of antimicrobial resistance.
Microplastics are a hotspot for antibiotic resistance genes: Progress and perspective
This review examines growing evidence that microplastics serve as hotspots for antibiotic resistance genes in the environment. Researchers found that microplastics selectively accumulate antibiotic-resistant bacteria and resistance genes on their surfaces across wastewater, aquatic, and terrestrial environments. The dense bacterial communities and concentrated pollutants on microplastic surfaces create favorable conditions for the spread and evolution of antibiotic resistance, raising concerns about potential risks to human health.
Microplastics as emerging reservoirs of antimicrobial resistance: Clinical relevance and environmental mechanisms
This review examines how microplastics act as environmental reservoirs for antibiotic resistance genes, creating selective microenvironments through antibiotic and metal adsorption, biofilm formation, and horizontal gene transfer, with potential pathways to clinical human exposure.
Growth and prevalence of antibiotic-resistant bacteria in microplastic biofilm from wastewater treatment plant effluents
Researchers studied antibiotic-resistant bacteria growing in biofilms on microplastic surfaces in wastewater treatment plant effluent. The study found that microplastic biofilms accumulated antibiotic-resistant bacteria including Pseudomonas, Aeromonas, and Bacillus, and that these biofilms harbored higher concentrations of resistance genes compared to surrounding water, suggesting microplastics may serve as reservoirs for antibiotic resistance.
Horizontal Gene Transfer of Antibiotic Resistance Genes in Biofilms
This review explains how bacteria living in biofilms -- sticky communities attached to surfaces -- can rapidly share antibiotic resistance genes with each other through horizontal gene transfer, spreading resistance faster than free-floating bacteria. This is relevant to microplastic pollution because microplastics provide ideal surfaces for biofilm formation, potentially acting as hotspots for the spread of antibiotic resistance in the environment.
Biofilm formation on microplastics and interactions with antibiotics, antibiotic resistance genes and pathogens in aquatic environment
This review explains how microplastics in waterways develop bacterial biofilms on their surfaces that can harbor antibiotic-resistant bacteria and help spread antibiotic resistance genes to new environments. This is concerning for human health because these resistant microbes could eventually reach people through drinking water or seafood consumption.
Microplastisphere antibiotic resistance genes: A bird's-eye view on the plastic-specific diversity and enrichment
Microplastics in the environment act as surfaces for microbial communities called microplastispheres, which this review finds are enriched with antibiotic resistance genes (ARGs). The type of plastic, surrounding water chemistry, and co-occurring pollutants all influence which resistance genes accumulate, raising concern that microplastics could be spreading antibiotic resistance through aquatic environments worldwide.
Enhanced propagation of intracellular and extracellular antibiotic resistance genes in municipal wastewater by microplastics
Researchers investigated how microplastics in municipal wastewater can carry and promote the spread of antibiotic resistance genes, including those found both inside and outside bacterial cells. They found that microplastics adsorbed both types of resistance genes and enhanced their transfer between bacteria through horizontal gene transfer. The study reveals that microplastics in wastewater systems may act as an underappreciated accelerator of antibiotic resistance spread.
Unraveling the effect of micro/nanoplastics on the occurrence and horizontal transfer of environmental antibiotic resistance genes: Advances, mechanisms and future prospects
This review examines how micro- and nanoplastics promote the spread of antibiotic resistance genes in the environment. The tiny plastic particles create conditions that help bacteria exchange resistance genes more easily by generating oxidative stress, making cell membranes more permeable, and providing surfaces where resistant bacteria can form communities. This is a growing public health concern because antibiotic-resistant infections are increasingly difficult to treat.
Antibiotic resistance in plastisphere
Researchers reviewed antibiotic resistance in the plastisphere — the microbial community colonizing plastic surfaces in aquatic environments — finding that plastic properties and aging influence the enrichment and horizontal transfer of antibiotic resistance genes, and that aged microplastics pose elevated risks due to increased adsorption of resistant bacteria.
Alteration of microbial mediated carbon cycle and antibiotic resistance genes during plastisphere formation in coastal area
Researchers investigated how microplastic surfaces in coastal environments develop biofilm communities, known as the plastisphere, and whether these biofilms enrich antibiotic resistance genes. The study found that incubation time, habitat type, and microplastic aging state all significantly influenced biofilm composition, and that aged microplastics accumulated more antibiotic resistance genes than new ones, suggesting microplastics may serve as vectors for spreading resistant bacteria.
Marine plastisphere selectively enriches microbial assemblages and antibiotic resistance genes during long-term cultivation periods
Researchers placed four types of common microplastics in a marine environment for over 100 days and found that bacterial communities and antibiotic resistance genes accumulated on the plastic surfaces over time. PVC microplastics were particularly effective at concentrating resistance genes, and a key gene-transfer element was found on all plastic types. These results show that microplastics floating in the ocean act as hotspots for antibiotic-resistant bacteria, which could eventually reach humans through seafood or water.
Microplastics mediated antibiotic resistance gene enrichment and transfer in environment: Different types, microplastic antibiotic resistance gene ecological island and nano-size effect
This review examines how microplastics serve as platforms for accumulating and spreading antibiotic resistance genes in the environment. Researchers introduced the concept of a microplastic antibiotic resistance gene ecological island, describing how plastic surfaces create niches where resistant bacteria and mobile genetic elements concentrate. The study found that biodegradable and aged microplastics are particularly effective at promoting resistance gene adhesion and transfer, posing a dual environmental threat.
Microplastic-Mediated Dissemination of Antibiotic Resistance Genes in Marine Environments: Mechanisms, Environmental Modulators, and Emerging Risks
This review examines how microplastics serve as vectors for spreading antibiotic resistance genes in marine environments through biofilm formation and horizontal gene transfer. Researchers found that plastic surfaces promote colonization by resistant bacteria, and environmental factors like salinity, UV exposure, and co-occurring heavy metals further accelerate the spread of resistance genes, posing significant ecological and public health risks.