We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Nanoplastics amplified the toxicity and intergenerational residue of perfluoroalkyl substances in aquatic environments: Mechanistic insights and environmental modulation
AI summary Read the abstract
New research found that tiny plastic particles (nanoplastics) can act like a "delivery truck" for PFAS—the toxic "forever chemicals" found in nonstick pans and water-resistant products—making them build up more in the body and causing worse effects on movement and reproduction in a test organism, with harm even passing down to offspring. While this study was done in a microscopic worm, not humans, it's a warning sign that plastic pollution and forever chemicals in our water and environment could be more dangerous together than either is alone, especially since both are already found in human blood and tissue.
Nanoplastics (NPs) have been confirmed to act as carrier for per- and polyfluoroalkyl substances (PFAS) in natural aquatic environments, yet the mechanisms of their combined toxicity and intergenerational effects remain unclear. Here, Caenorhabditis elegans were exposed to NPs (10-200 μg/L), PFAS (0.001-1 μM), and their combined scenario at environmentally relevant concentrations. Results showed that NPs co-exposure increased the perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) burden retained in washed nematode by 37.0-98.6% and 81.5-305%, respectively, compared with the corresponding PFAS-only exposure groups. Co-exposure of NPs and PFAS suppressed head swings of nematode by 27.1-29.9%, and decreased egg production by 11.9-21.9%, with reproductive impairment persisting into the F2 generation. NPs co-exposure altered offspring-associated PFAS residue profiles, with detectable PFOA and PFOS residues in F1 and F2 but not in F3. These data indicate early-generation residue carryover rather than confirmed tissue transfer or maternal sequestration Transcriptomic analysis suggested that PFOA exposure was associated with changes in phospholipid metabolism and PI3K-AKT-neuroendocrine axis, whereas PFOS exposure was associated with altered ABC transporter expression and lysosome-autophagy-related responses. Given that environmental factors can influence NPs-PFAS interactions and bioavailability, we further examined the modulating effects of pH, ionic strength, fulvic acid, and extracellular polymeric substances (EPS). Acidic conditions (pH = 6) increased NPs adsorption of PFAS by 86.8-92.5%, exacerbating PFAS induced growth inhibition, whereas EPS (5 mg/L) alleviated PFAS toxicity. These findings highlighted the need for integrated risk assessments of NPs and PFAS in natural environments.
More Papers Like This
Microplastics as carriers of per- and polyfluoroalkyl substances (PFAS) in aquatic environment: interactions and ecotoxicological effects
AI summary Read the abstract
Researchers reviewed how microplastics serve as carriers for per- and polyfluoroalkyl substances (PFAS), sometimes called forever chemicals, in aquatic environments. The study found that PFAS can attach to microplastic surfaces and accumulate in organisms through the food chain, potentially amplifying the toxic effects of both pollutants. The findings suggest that the combined presence of microplastics and PFAS poses a greater environmental and health risk than either pollutant alone.
Correlation between the stability and toxicity of PFAS–nanoplastic colloids
AI summary Read the abstract
Researchers found that PFAS (forever chemicals) attach to nanoplastic particles in water, and the resulting combination becomes more toxic as it becomes more stable in solution. The more firmly the PFAS binds to the nanoplastic surface, the greater the harm to living organisms. This is concerning because both PFAS and nanoplastics are widespread in the environment, and their interaction may create health risks greater than either pollutant alone.
Microplastic co-exposure increases PFAS bioaccumulation without universally amplifying toxicity in aquatic organisms: A multi-endpoint meta-analysis
AI summary Read the abstract
Scientists found that microplastics and "forever chemicals" (PFAS) often build up together in water animals, with microplastics helping PFAS accumulate more in their bodies. But this didn't always mean worse health effects: some issues like nerve damage and digestion problems got worse, while others like reproduction and hormone effects didn't change, showing that risk depends on the specific chemical and situation, not one blanket rule.
From laboratory to the field: the role of microplastics as vectors of per- and polyfluoroalkyl substances (PFAS) in the environment
AI summary Read the abstract
Tiny plastic particles (microplastics) can act like tiny taxis for "forever chemicals" (PFAS), picking them up and carrying them through water, soil, and potentially into our bodies, according to this review of existing studies. Lab tests show plastics can soak up a lot of these chemicals, but real-world conditions—like natural buildup of grime on plastic surfaces—make this pickup less predictable, meaning the actual risk to humans and ecosystems is still hard to pin down. The takeaway: these two pollutants may be teaming up in ways that make each other more persistent and harder to clean up, which is why sc
Interaction of microplastics with perfluoroalkyl and polyfluoroalkyl substances in water: A review of the fate, mechanisms and toxicity
AI summary Read the abstract
This review examines how microplastics act as carriers for PFAS ("forever chemicals") in water, with the two pollutants interacting through various chemical mechanisms that affect their movement through the environment. The combined presence of microplastics and PFAS raises concerns about increased toxicity, since microplastics can transport these persistent chemicals into organisms and potentially concentrate their harmful effects.
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.