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Tier 2
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Original research — experimental, observational, or case-control study. Direct primary evidence.
Human Health Effects
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Is the toxicity of nanosized polymethylmethacrylate particles dependent on the exposure route and food items?
Journal of Hazardous Materials2021
14 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 45
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Cátia Venâncio,
Cátia Venâncio,
Cátia Venâncio,
Cátia Venâncio,
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Cátia Venâncio,
Cátia Venâncio,
Miguel Oliveira
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Alexandra Ciubotariu,
Alexandra Ciubotariu,
Miguel Oliveira
Manuel A. Martins,
Isabel Lopes,
Cátia Venâncio,
Cátia Venâncio,
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Manuel A. Martins,
Miguel Oliveira
Cátia Venâncio,
Cátia Venâncio,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Isabel Lopes,
Isabel Lopes,
Isabel Lopes,
Isabel Lopes,
Isabel Lopes,
Isabel Lopes,
Isabel Lopes,
Manuel A. Martins,
Manuel A. Martins,
Manuel A. Martins,
Manuel A. Martins,
Manuel A. Martins,
Miguel Oliveira
Isabel Lopes,
Miguel Oliveira
Manuel A. Martins,
Miguel Oliveira
Manuel A. Martins,
Manuel A. Martins,
Miguel Oliveira
Manuel A. Martins,
Miguel Oliveira
Manuel A. Martins,
Isabel Lopes,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Manuel A. Martins,
Isabel Lopes,
Miguel Oliveira
Isabel Lopes,
Cátia Venâncio,
Miguel Oliveira
Manuel A. Martins,
Isabel Lopes,
Isabel Lopes,
Manuel A. Martins,
Isabel Lopes,
Isabel Lopes,
Manuel A. Martins,
Manuel A. Martins,
Miguel Oliveira
Cátia Venâncio,
Cátia Venâncio,
Cátia Venâncio,
Miguel Oliveira
Isabel Lopes,
Miguel Oliveira
Miguel Oliveira
Manuel A. Martins,
Isabel Lopes,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Manuel A. Martins,
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Miguel Oliveira
Summary
Researchers exposed the marine rotifer Brachionus plicatilis to PMMA nanoplastics via waterborne, foodborne, and combined routes over 21 days and found that exposure route and algal food type significantly modulated population outcomes, with foodborne exposure sometimes yielding better performance than controls — highlighting the need for standardized nanoplastic toxicity testing protocols that reflect realistic ecological exposure pathways.
The environmental effects of nanoplastics-NPLs have been addressed mainly through short-term exposures to a few types of polymers, neglecting other NPLs that are economically relevant like polymethylmethacrylate - PMMA. This work aimed to assess long-term effects of PMMA-NPLs on the marine primary consumer Brachionus plicatilis, evaluating the influence of different exposure routes (waterborne, foodborne and both) and food items (Nannochloropsis gaditana and Tetraselmis chuii). Rotifers were 21 days exposed to: a) control, with clean medium and food-CTR; b) contaminated medium (8.1 mg PMMA-NPLs/L) and clean algae-MC; c) clean medium and contaminated algae (pre-incubated for 96 h on 8.1 mg PMMA-NPLs/L)-AC; and, d) contaminated medium and algae-MC/AC. Mortality (lx), total number of organisms (TN), fecundity (mx), populational growth rate (r), generational time (gt), and feeding rates were assessed. Effects on r and mx were found after 21 days. Organisms from AC had higher r than MC. MC/AC organisms performed better than control in all endpoints. Overall organisms fed with N. gaditana had higher TN, m and r than those fed with T. chuii. In the AC treatments, rotifers fed with N. gaditana had higher m. Results highlight that exposure route and food type may modulate NPLs' effects, supporting the need for standardization of assays.