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20 resultsShowing papers similar to Diversity of antibiotic resistance gene variants at subsequent stages of the wastewater treatment process revealed by a metagenomic analysis of PCR amplicons
ClearA combined metagenomics and metatranscriptomics approach to assess the occurrence and reduction of pathogenic bacteria in municipal wastewater treatment plants
This paper is not relevant to microplastics research — it uses metagenomics and metatranscriptomics to assess pathogenic bacteria, antibiotic-resistant genes, and mobile genetic elements in wastewater treatment plants in South Africa.
Size-dependent effects of microplastics on antibiotic resistance genes fate in wastewater treatment systems: The role of changed surface property and microbial assemblages in a continuous exposure mode
Researchers developed a continuous exposure method to evaluate how different sizes of microplastics affect antibiotic resistance gene fate in wastewater treatment, finding that smaller microplastics had greater impacts on microbial communities and resistance gene proliferation.
The Role of Wastewater Treatment Plants in Dissemination of Antibiotic Resistance: Source, Measurement, Removal and Risk Assessment
This review examines how wastewater treatment plants handle antibiotic-resistant bacteria and their resistance genes, finding that current treatment processes do not fully remove them. Different levels of treatment show varying removal rates, and resistant bacteria can still be found in treated water released into the environment. While not directly about microplastics, the findings are relevant because microplastics in wastewater can carry antibiotic-resistant bacteria into waterways.
Fragmented Microplastics Synergize with Biological Treatment To Potentiate Antibiotic Resistance Dissemination during Sewage Treatment
Researchers used metagenomic sequencing and high-throughput qPCR across a full sewage treatment chain to show that fragmented microplastics preferentially concentrate clinically relevant antibiotic resistance genes, with MP-bound genes contributing up to 43% of intracellular resistance genes detected in treated effluent, and Acinetobacter emerging as a key resistance indicator.
Antibiotic resistance genes, antibiotic residues, and microplastics in influent and effluent wastewater from treatment plants in Norway, Iceland, and Finland
Researchers used Oxford Nanopore metagenomic sequencing, qPCR, HPLC, and µFTIR spectroscopy to simultaneously track antibiotic resistance genes, antibiotic residues, and microplastics in wastewater treatment plant influents and effluents in Norway, Iceland, and Finland. Sequencing identified 193 unique ARGs, with patterns suggesting that treatment processes affect ARG abundance but do not eliminate them, and that MPs co-occur with resistance-promoting conditions.
Impact of wastewater treatment plant effluent discharge on the antibiotic resistome in downstream aquatic environments: a mini review
This review summarizes how wastewater treatment plants release antibiotic-resistant bacteria and resistance genes into rivers and lakes through their treated water. Current treatment processes cannot fully remove these resistance factors, allowing them to spread in downstream water bodies and potentially reach humans through drinking water and the food chain. The review is relevant to microplastics research because microplastics in wastewater can serve as surfaces where resistant bacteria grow and spread.
Antibiotic resistance fate in the full-scale drinking water and municipal wastewater treatment processes: A review
This review examines how antibiotic-resistant bacteria and resistance genes move through drinking water and wastewater treatment processes, finding that conventional treatment does not fully eliminate resistance. Microplastics in water systems act as surfaces that harbor and potentially transfer antibiotic resistance genes, making microplastic removal from water treatment an important co-benefit for antibiotic resistance management.
Research progress on the origin, fate, impacts and harm of microplastics and antibiotic resistance genes in wastewater treatment plants
This review explores how microplastics and antibiotic resistance genes interact in wastewater treatment plants, where they can survive treatment and enter the environment together. The concern for human health is that these contaminants can travel through the food chain, potentially increasing illness from antibiotic-resistant infections.
The impact of various microplastics on bacterial community and antimicrobial resistance genes in Norwegian and South African wastewater
Researchers investigated how various microplastic types affect bacterial community composition and antimicrobial resistance gene prevalence in wastewater treatment plants in Norway and South Africa, examining whether plastic debris promotes antimicrobial resistance dissemination.
Microplastic biofilm, associated pathogen and antimicrobial resistance dynamics through a wastewater treatment process incorporating a constructed wetland
This study tracked how microplastic-associated biofilms, pathogens, and antibiotic resistance genes changed through a wastewater treatment process that included a constructed wetland. While the treatment reduced some pathogens, certain antibiotic resistance genes persisted on microplastic surfaces even after treatment. This means microplastics leaving treatment plants could carry drug-resistant bacteria into rivers and lakes, potentially affecting downstream drinking water sources.
Contribution of microplastic particles to the spread of resistances and pathogenic bacteria in treated wastewaters
Researchers studied microplastic particles collected from treated wastewater effluents and found that MPs harbored significantly higher loads of antibiotic resistance genes and pathogenic bacteria compared to surrounding water, suggesting MPs facilitate their environmental spread.
Abundance and Antimicrobial Resistance of Three Bacterial Species along a Complete Wastewater Pathway
A year-long study of a Swedish wastewater pathway found that antibiotic-resistant bacteria were most abundant in hospital wastewater and that resistance profiles mirrored local antibiotic consumption. Wastewater treatment plants also process microplastics, and understanding how bacteria move through these systems is relevant to the plastisphere's role in spreading resistance.
The dangerous transporters: A study of microplastic-associated bacteria passing through municipal wastewater treatment
This study characterized bacterial communities attached to microplastics sampled from multiple stages of a municipal wastewater treatment plant, finding that diverse bacteria including potential pathogens and antibiotic-resistant strains remained attached to microplastics through all treatment steps. The results suggest microplastics could transport hazardous bacteria through wastewater treatment and into receiving environments.
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.
Unraveling the role of microplastics in antibiotic resistance: Insights from long-read metagenomics on ARG mobility and host dynamics
Researchers used long-read metagenomics to investigate how microplastics serve as vectors for antibiotic resistance genes in aquatic environments. They found that plasmid-encoded resistance genes varied significantly between microplastic biofilms and surrounding water, highlighting horizontal gene transfer as a key mechanism for resistance gene enrichment on plastic surfaces. The study identified specific bacterial taxa driving this enrichment and revealed that enhanced cell adhesion and transporter activity on microplastics facilitate the spread of antibiotic resistance.
Microplastics shape microbial interactions and affect the dissemination of antibiotic resistance genes in different full-scale wastewater treatment plants
A study of three full-scale wastewater treatment plants found that microplastics were associated with increased spread of antibiotic resistance genes (ARGs), with microplastic surfaces appearing to facilitate microbial interactions that promote ARG transfer. This is a significant public health concern because wastewater plants that fail to fully remove microplastics may also be inadvertently accelerating the dissemination of antibiotic resistance into receiving waterways.
Antibiotic resistance genes and virulence factors in the plastisphere in wastewater treatment plant effluent: Health risk quantification and driving mechanism interpretation
Researchers found that microplastics in treated wastewater carry significantly more disease-causing bacteria, antibiotic resistance genes, and virulence factors on their surfaces compared to the surrounding water. This means microplastics released from wastewater treatment plants into rivers and lakes could spread antibiotic-resistant infections, posing a direct risk to communities that rely on these water sources.
Antibiotic resistance genes, antibiotic residues, and microplastics in influent and effluent wastewater from treatment plants in Norway, Iceland, and Finland
Researchers analyzed antibiotic resistance genes, antibiotic residues, and microplastics in wastewater from treatment plants in Norway, Iceland, and Finland. They found that many resistance genes were carried on mobile DNA elements that can spread between bacteria, and that polyethylene microplastics were the dominant plastic type present. The study shows that even in countries with advanced wastewater treatment, microplastics and antibiotic resistance genes can persist and be released into the environment.
Decoding the microplastic Micro-interface: a complex Web of gene transfer and pathogenic threats in wastewater
Researchers used metagenomics to study how microplastic surfaces in wastewater treatment systems serve as hotspots for antibiotic resistance genes and pathogenic bacteria. They found that microplastic micro-interfaces supported more robust microbial networks and facilitated horizontal gene transfer of resistance and virulence genes more actively than surrounding environments. The study suggests that microplastics in wastewater may accelerate the spread of antibiotic resistance and increase pathogenicity risks.
Unveiling the Interactions Between the Antibiotic Resistome and Microplastics Influenced by Trace Elements and PPCPs in Wastewater Treatment Plants
Researchers monitored wastewater treatment plants containing microplastics, trace elements, and pharmaceutical/personal care products, finding that these co-occurring pollutants interact to influence the survival and spread of antibiotic-resistant bacteria and resistance genes through the treatment process.