We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Toxicological interactions induced by chronic exposure to gold nanoparticles and microplastics mixtures in Daphnia magna
AI summary Read the abstract
This study examined the combined toxicological effects of gold nanoparticles and microplastics through chronic exposure, finding interactive effects that differed from either contaminant alone, emphasizing the importance of studying multiple stressors together.
The effects of emerging environmental contaminants on human and environmental health is of high concern, especially those potentially induced by mixtures. The main goal of the present study was to assess the chronic effects of mixtures of citrate stabilized ≈5 nm gold nanoparticles (AuNP) and 1-5μm microplastics (MP) on Daphnia magna. A 21-day bioassay was carried out. The effect criteria were parental mortality, somatic growth and several reproductive parameters. AuNP induced parental mortality, reduced the total offspring and caused immobile juveniles and aborted eggs. MP induced parental mortality, delayed the first brood release, decreased the number of broods released, the total offspring, and caused immobile juveniles. All the mixtures caused higher toxicity than AuNP and MP alone. Based on parental mortality, evidences of antagonism between AuNP and MP were observed at low concentrations of both mixture components, whereas evidences of synergism at high concentrations were found. Chronic (21-day) exposure of D. magna to AuNPs, MP, and their mixtures can impair development, reproduction, ultimately leading to death.
More Papers Like This
Ecotoxicological Effects of Gold Nanoparticles and Microplastics in Daphnia magna
AI summary Read the abstract
This study tested gold nanoparticles and polyethylene microplastics, alone and combined, on water fleas (Daphnia magna) over 21 days. Both substances individually caused death and reduced reproduction, and when combined, their harmful effects on the water fleas were stronger than either alone.
Toxicity of gold nanoparticles complicated by the co-existence multiscale plastics.
AI summary Read the abstract
This study examined how co-exposure to gold nanoparticles and plastic particles of different sizes modifies the toxicity of gold nanoparticles, finding complex interactions that altered toxic outcomes compared to gold nanoparticles alone. The results highlight that real-world toxicological risk assessment must account for co-contaminant interactions rather than testing pollutants in isolation.
Mixture Toxicity of Nickel and Microplastics with Different Functional Groups on Daphnia magna
AI summary Read the abstract
Researchers investigated the combined toxicity of nickel and two types of polystyrene microplastics with different surface chemistries on Daphnia magna. They found that the presence of microplastics altered the toxicity of nickel, with surface functional groups playing an important role in determining the severity of combined effects. The study demonstrates that microplastics can modify the bioavailability and toxicity of heavy metals in freshwater environments.
Action of Surfactants in Driving Ecotoxicity of Microplastic-Nano Metal Oxides Mixtures: A Case Study on Daphnia magna under Different Nutritional Conditions
AI summary Read the abstract
This study tested how surfactants (found in detergents and cleaning products) interact with microplastics and metal oxide nanoparticles to affect the toxicity of these combined pollutants on water fleas (Daphnia magna). Surfactants increased the toxicity of microplastic-nanoparticle mixtures, and the effect varied with the age and nutritional status of the test organisms. This highlights how the complex real-world mixture of pollutants in waterways can be more harmful than any single contaminant alone.
Single and combined effects of gold nanoparticles and microplastics on juveniles of the marine fish Pomatoschistus microps, and modulation by temperature
AI summary Read the abstract
Researchers exposed juvenile marine fish (Pomatoschistus microps) to gold nanoparticles, microplastics, or both simultaneously to understand their individual and combined toxic effects, and how rising water temperatures change those effects. This research helps clarify whether microplastics and other pollutants interact to cause greater harm to marine life under climate change conditions.
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.