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Thermoset Polyester Resin Microplastics: Effects on Enzymatic Biomarkers and Toxicological Endpoint Responses of Eisenia fetida Earthworms
Toxics2025
2 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 58
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
David Amaya-Vías,
Gemma Albendín,
Gemma Albendín,
Rocío Rodríguez-Barroso
David Amaya-Vías,
J.M. Arellano,
David Amaya-Vías,
David Amaya-Vías,
J.M. Arellano,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Gemma Albendín,
Gemma Albendín,
María Dolores Coello Oviedo,
J.M. Arellano,
Vanessa Aranda-Quirós,
Vanessa Aranda-Quirós,
María Dolores Coello Oviedo,
Gemma Albendín,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Gemma Albendín,
María Dolores Coello Oviedo,
Gemma Albendín,
Gemma Albendín,
Gemma Albendín,
Gemma Albendín,
Gemma Albendín,
Gemma Albendín,
Gemma Albendín,
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Rocío Rodríguez-Barroso
J.M. Arellano,
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
J.M. Arellano,
Rocío Rodríguez-Barroso
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Gemma Albendín,
Rocío Rodríguez-Barroso
Gemma Albendín,
Rocío Rodríguez-Barroso
María Dolores Coello Oviedo,
Rocío Rodríguez-Barroso
J.M. Arellano,
J.M. Arellano,
J.M. Arellano,
J.M. Arellano,
J.M. Arellano,
Rocío Rodríguez-Barroso
Gemma Albendín,
J.M. Arellano,
Gemma Albendín,
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
Rocío Rodríguez-Barroso
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
J.M. Arellano,
Rocío Rodríguez-Barroso
Gemma Albendín,
María Dolores Coello Oviedo,
J.M. Arellano,
J.M. Arellano,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Rocío Rodríguez-Barroso
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
María Dolores Coello Oviedo,
Rocío Rodríguez-Barroso
Summary
Researchers tested the effects of thermoset polyester resin microplastics on earthworms at environmentally relevant concentrations over 14 days and found no significant impacts on survival, weight, behavior, or key enzyme biomarkers. The 100 percent survival rate and absence of measurable toxic effects suggest that at these concentrations and timeframes, this type of microplastic may pose limited risk to earthworms. However, the researchers note that longer exposures or higher concentrations could yield different results.
Thermosets are plastic composite materials widely used in many industrial sectors of modern society with an increasing presence in the environment. The adverse effects of this material on environmental compartments and biota of thermosets are still unknown. In this work, we studied the potential effects of two thermoset polyester resin-derived microplastics (R930A-SP and R930A-DVE1) on the survival, behavior, morphological changes and subcellular damage of earthworms <i>Eisenia fetida</i>. The proposed experimental conditions simulated environmentally relevant concentrations, taking as a reference other related microplastics present in the environment. Thus, <i>E. fetida</i> specimens were exposed to five concentrations (100, 500, 1000, 1500 and 2000 mg resin per kg soil) of these two resins for 14 days. At concentrations and exposure times studied, no significant effects on growth, measured as weight loss, or on the enzyme biomarkers (cholinesterase, carboxylesterase and glutathione S-transferase) were observed. Similarly, no behavioral changes were detected in earthworms, and the survival rate was 100%. Likewise, no differences were observed between the different formulations of the polyester resins studied. However, this study could serve as a starting point for further studies with higher concentrations and/or exposure times, as well as in combination with other pollutants.