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Microplastics in ballast water as an emerging source and vector for harmful chemicals, antibiotics, metals, bacterial pathogens and HAB species: A potential risk to the marine environment and human health
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This review examines how microplastics in ballast water can serve as carriers for harmful chemicals, antibiotic-resistant bacteria, toxic metals, and harmful algal bloom species across global shipping routes. Researchers highlight that microplastics create hotspots for the development of drug-resistant pathogens through co-selection mechanisms. The study argues that the current international ballast water management convention needs to be updated to include microplastics as a regulated hazardous material.
Microplastic pollution in marine waters around the globe is increasing exponentially. This is the first comprehensive review which focuses on microplastics as a source and vector for metals, antibiotics, toxic chemicals, pathogenic bacteria (Vibrio cholerae), and Harmful Algal Bloom (HAB)-forming dinoflagellates across the continents through ballast water. Microplastics in ballast waters serve as 'hotspots' for the development and spread of multiple drug-resistant human pathogens through co-selection mechanisms. Microplastic inoculation at distant countries through ballast water may pose a serious threat to human health due to higher incidences of bacterial disease outbreaks and HABs. The 2017 ballast water management convention lacks a provision for on-board treatment of microplastic-contaminated ballast water. We conclude that there is a pressing need to include microplastics in the ballast water management convention as a hazardous material. Efficient on-board ballast water treatment strategies and effective limits for microplastics in ballast waters need to be developed.
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Researchers reviewed how microplastics in aquatic environments act as surfaces where antibiotic-resistant bacteria can grow and swap resistance genes with each other, raising concern that contaminated seafood and water could transfer these hard-to-treat bacteria to humans.
Microplastic-mediated antimicrobial resistance in aquatic environments: plastisphere dynamics, ecological risks, and mitigation strategies
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Tiny plastic particles floating in water aren't just pollution—they act like rafts where bacteria gather and swap genes that make them resistant to antibiotics, potentially making infections harder to treat. This review paper rounds up existing research on how this happens and compares different water treatment methods (like filtration and chemical treatments) that could remove both the plastics and the resistant bacteria at once. The takeaway: tackling microplastic pollution in our water systems may be an important, underappreciated tool for slowing the spread of antibiotic-resistant infections.
Microplastic-associated pathogens and antimicrobial resistance in environment
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This review examines how microplastics in the environment act as surfaces for disease-causing bacteria and antibiotic-resistant microbes to colonize and spread. Researchers found that microplastics can carry pathogens and facilitate the transfer of antimicrobial resistance genes between bacteria in water systems. The findings raise concerns that microplastic pollution may be contributing to the growing global challenge of antibiotic resistance.
An Exploratory Review of Microplastic Pollution, Associated Microbiomes and Pathogens in Water
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This review analyzes over a decade of research on microplastic pollution in surface waters across five continents, focusing on the microorganisms that colonize plastic surfaces. Researchers found that microplastics serve as floating habitats for bacteria, including potential human pathogens and antibiotic-resistant strains. The study highlights that microplastic pollution poses a dual threat by both contaminating water and providing a vehicle for harmful microbes to spread.
Microplastics in fresh- and wastewater are potential contributors to antibiotic resistance - A minireview
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Researchers reviewed the link between microplastic pollution and the spread of antibiotic resistance in freshwater environments, finding that microplastic surfaces host unique bacterial communities enriched in antibiotic-resistant bacteria and the resistance genes they can share with other microbes. The close packing of bacteria in these plastic-surface biofilms may accelerate the spread of drug-resistant pathogens through drinking water sources, though the full health implications remain poorly understood.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.