Controlled protein mediated aggregation of polystyrene nanoplastics does not reduce toxicity towards <i>Daphnia magna</i>

Frankel, Rebecca; Ekvall, Mikael T.; Kelpsiene, Egle; Hansson, Lars; Cedervall, Tommy

doi:10.1039/c9en01236b

Cited by 22 publications

(23 citation statements)

References 38 publications

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“…In total, 38 scientific papers were retrieved for this analysis [ 6 , 9 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. As different experimental set-ups (e.g., different particle sizes, toxicity endpoints) were applied in the studies, each of these was considered an ecotoxicity data point.…”

Section: Resultsmentioning

confidence: 99%

Defining Quality Criteria for Nanoplastic Hazard Evaluation: The Case of Polystyrene Nanoplastics and Aquatic Invertebrate Daphnia spp.

et al. 2023

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Polystyrene nanoparticles are the most investigated type of nanoplastics in environmental hazard studies. It remains unclear whether nanoplastic particles pose a hazard towards aquatic organisms. Thus, it was our aim to investigate whether the existing studies and data provided therein are reliable in terms of data completeness. We used the example of Daphnia spp. studies for the purpose of polystyrene nanoplastic (nanoPS) hazard evaluation. First, a set of quality criteria recently proposed for nanoplastic ecotoxicity studies was applied. These rather general criteria for all types of nanoplastics and different test organisms were then, in the second step, tailored and refined specifically for Daphnia spp. and nanoPS. Finally, a scoring system was established by setting mandatory (high importance) as well as desirable (medium importance) criteria and defining a threshold to pass the evaluation. Among the existing studies on nanoPS ecotoxicity for Daphnia spp. (n = 38), only 18% passed the evaluation for usability in hazard evaluation. The few studies that passed the evaluation did not allow for conclusions on the hazard potential of nanoPS because there was no consensus among the studies. The greatest challenge we identified is in data reporting, as only a few studies presented complete data for hazard evaluation.

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Section: Resultsmentioning

confidence: 99%

Defining Quality Criteria for Nanoplastic Hazard Evaluation: The Case of Polystyrene Nanoplastics and Aquatic Invertebrate Daphnia spp.

et al. 2023

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“…Nontarget organisms might not have the same responses as cyanobacteria to H 2 O 2 treatment in a background of NPs, and if instead NPs and H 2 O 2 additively or synergistically harm nontarget organisms, other control mechanisms might need to be considered. We recommend that research going forward consider other environmental variables that could interactively alter the effects of NPs or cyanoHAB control measures, such as suspended sediments and organic matter. − …”

Section: Discussionmentioning

confidence: 99%

Effects of Hydrogen Peroxide on Cyanobacterium Microcystis aeruginosa in the Presence of Nanoplastics

et al. 2021

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Hydrogen peroxide (H2O2) is a common control measure for cyanobacterial harmful algal blooms (cyanoHABs), but local contaminants may alter its effects. Here, we aim to understand the control of cyanoHABs by H2O2 in light of nanoplastic contamination using a multistressor framework. We utilized a high-throughput full-factorial experiment to capture the multistressor impacts of H2O2, nanoplastics, temperature, and light on a toxigenic strain of the freshwater cyanobacterium Microcystis aeruginosa. In addition to revealing independent inhibitory effects of H2O2 and nanoplastics on cell abundance and microcystin production, our high-throughput system also identified non-additive, interactive effects. Specifically, we found that nanoplastics weakened the inhibitory effects of H2O2 on cell abundance and microcystin production. In addition, we discovered that nanoplastics restricted the degradation of H2O2, partially explaining this non-additive effect. Because combined H2O2 and nanoplastic still curbed growth, we expect H2O2 will remain an effective control measure even with background nanoplastic pollution. Our findings illustrate the importance of taking local stressors, including anthropogenic contaminants such as nanoplastics, into account before H2O2 is applied to control cyanoHABs.

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“…81 Yet, in other systems, organic matter only sometimes reduces NP toxicity. 16,18 NPs may be less easily retained within the digestive system of these zooplankton species once it is combined with NC, or coated with HA: both HA and NC also appear to have caused a stronger inhibition of NP retention (Fig. 4 and Table S2 †).…”

Section: Environmental Science: Nano Papermentioning

confidence: 99%

“…Interactions with and/or ingestion of nanoplastics, as reported throughout literature, 14,15 can lead to oxidative stress and feeding disruption, among other sub-lethal effects. [16][17][18][19] Amine-modified polystyrene (PS) nanoplastics can induce cell membrane damage followed by cell apoptosis in urchin embryos, 20 and adsorption of NPs on appendages, or gut blockage by ingested particles can underlie toxicity in microcrustaceans. 21,22 NPs can also lead to reduced body size, malformations and reduced reproduction for Daphnia magna.…”

Section: Introductionmentioning

confidence: 99%

Toxicity of nanoplastics to zooplankton is influenced by temperature, salinity, and natural particulate matter

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O'Brien

Kose

et al. 2022

Environ. Sci.: Nano

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Controlled protein mediated aggregation of polystyrene nanoplastics does not reduce toxicity towards Daphnia magna

Abstract: Aggregated small nanoplastics are still toxic whereas solid nanoplastics with the same size as the aggregates are not.

Cited by 22 publications

References 38 publications

Defining Quality Criteria for Nanoplastic Hazard Evaluation: The Case of Polystyrene Nanoplastics and Aquatic Invertebrate Daphnia spp.

Defining Quality Criteria for Nanoplastic Hazard Evaluation: The Case of Polystyrene Nanoplastics and Aquatic Invertebrate Daphnia spp.

Effects of Hydrogen Peroxide on Cyanobacterium Microcystis aeruginosa in the Presence of Nanoplastics

Toxicity of nanoplastics to zooplankton is influenced by temperature, salinity, and natural particulate matter

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