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Polystyrene and polytetrafluoroethylene nanoplastics affect probiotic bacterial characteristics and penetrate their cellular membrane
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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.
Nanoplastics of different surface chemistries induce strain-specific alterations in bacterial membrane integrity and viability, highlighting potential impacts on gut microbiota stability.
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Could probiotics protect against human toxicity caused by polystyrene nanoplastics and microplastics?
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This review asks whether probiotics could counter the toxicity of polystyrene micro- and nanoplastics. It describes reported effects on gut bacteria, inflammation markers and intestinal leakage. The authors say more studies are required before any clinical recommendation can be made.
Perturbation of gut microbiota plays an important role in micro/nanoplastics-induced gut barrier dysfunction
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Researchers investigated how micro- and nanoplastics disrupt gut barrier function in mice, finding that different surface chemistries caused varying levels of damage. The study suggests that these plastic particles harm the gut by altering the gut microbiome, which then leads to inflammation and weakening of the intestinal barrier that normally keeps harmful substances out of the body.
Polystyrene nanoplastics sequester the toxicity mitigating potential of probiotics by altering gut microbiota in grass carp (Ctenopharyngodon idella)
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Researchers tested whether probiotic pretreatment could protect grass carp from the toxic effects of polystyrene nanoplastics on gut health. While probiotics initially boosted immune responses and reduced intestinal damage, the protective effect was not strong enough to fully counteract nanoplastic toxicity over time. The study suggests that nanoplastics can undermine the gut health benefits of probiotics by disrupting the balance of gut bacteria.
Interactions between polystyrene-derived micro- and nanoplastics and the microbiota: a systematic review of multi-omics mouse studies
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Researchers systematically reviewed 15 mouse studies and found that exposure to polystyrene micro- and nanoplastics consistently disrupted gut bacteria — reducing beneficial species like Lactobacillus and increasing harmful ones — while also altering metabolic pathways throughout the body. Nanoplastics caused more severe microbiome disruption than larger microplastics, highlighting a serious health concern for humans.
Impacts of polystyrene nanoplastics on zebrafish gut microbiota and mechanistic insights
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Zebrafish exposed to polystyrene nanoplastics showed significant changes in their gut bacteria, with beneficial species like Bifidobacterium declining and potentially harmful bacteria increasing. The nanoplastics physically entered intestinal tissues, causing visible damage to gut cells. This study is relevant to human health because our gut microbiome plays a key role in immunity and digestion, and similar disruption from nanoplastic exposure could contribute to digestive and immune problems.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.