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Are bio-based and biodegradable microplastics impacting for blue mussel (Mytilus edulis)?

Marine Pollution Bulletin 2021 63 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Amina Khalid, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Samira Benali, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Laurence Poirier, Samira Benali, Laurence Poirier, Samira Benali, Samira Benali, Samira Benali, Samira Benali, Jean‐Marie Raquez Laurence Poirier, Samira Benali, Samira Benali, Jean‐Marie Raquez Rosica Mincheva, Jean‐Marie Raquez Samira Benali, Samira Benali, Jean‐Marie Raquez Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Samira Benali, Jean‐Marie Raquez Laurence Poirier, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Jean‐Marie Raquez Laurence Poirier, Laurence Poirier, Jean‐Marie Raquez Jean‐Marie Raquez Jean‐Marie Raquez Samuel Bertrand, Samira Benali, Laurence Poirier, Laurence Poirier, Samuel Bertrand, Laurence Poirier, Samuel Bertrand, Jean‐Marie Raquez Jean‐Marie Raquez Jean‐Marie Raquez Jean‐Marie Raquez Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Jean‐Marie Raquez Laurence Poirier, Laurence Poirier, Aurore Zalouk‐Vergnoux, Laurence Poirier, Laurence Poirier, Aurore Zalouk‐Vergnoux, Laurence Poirier, Jean‐Marie Raquez

Summary

Researchers tested whether polylactic acid microplastics, a bio-based and biodegradable alternative to conventional plastics, cause toxicity in blue mussels over eight days of exposure. Standard biomarkers for oxidative stress, neurotoxicity, and immunotoxicity showed no significant effects. However, metabolomic analysis revealed changes in glycerophospholipid levels, suggesting subtle biochemical alterations that warrant further investigation into the safety of biodegradable microplastics in marine environments.

Polymers

PLA

Body Systems

Immune Nervous

Models

Invertebrate other

The substitution of petrochemical plastics by bio-based and biodegradable plastics are in need of an evaluation for the potential toxic impacts that they can have on marine wildlife. This study aims to assess the toxicological effects of polylactic acid microparticles at two concentrations, 10 and 100 μg/L, during 8 days on the blue mussel, Mytilus edulis. No significant oxidative stress (catalase, glutathione-S-transferase and superoxide dismutase activities), neurotoxicity (acetylcholinesterase), or immunotoxicity (lysosomal membrane stability and acid phosphatase activity) were detectable. The multivariate analysis of metabolomic data allowed us to differentiate the individuals according to the exposure. From the loading plot of OPLS-DA, 48 ions down-regulated in the individuals exposed to microplastics. They were identified based on HRMS data as glycerophospholipids.

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