We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Weathered polyethylene microplastics exposure leads to modulations in glutathione-S-transferase activity in fish
AI summary Read the abstract
Researchers reported that exposure to weathered polyethylene microplastics modulates glutathione-S-transferase activity in fish, indicating that environmentally aged microplastics can trigger oxidative stress responses in marine organisms.
DATA REPORT article Front. Mar. Sci., 16 August 2022Sec. Marine Pollution Volume 9 - 2022 | https://doi.org/10.3389/fmars.2022.990351
More Papers Like This
Impact of aged and virgin polyethylene microplastics on multi end-points effects of freshwater fish tissues
AI summary Read the abstract
Freshwater fish exposed to polyethylene microplastics for 15 days showed increased oxidative stress in both liver and muscle tissue, with aged, UV-weathered microplastics causing more damage than new ones. The weathering process changed the plastic surface in ways that made the particles more chemically reactive and potentially more harmful. This matters because microplastics in the environment are typically aged, meaning lab studies using only pristine particles may underestimate real-world toxicity.
Oxidative and inflammatory responses to virgin and beached microplastics in marine fish liver
AI summary Read the abstract
This study compared oxidative stress and inflammation responses in marine organisms exposed to virgin microplastics versus weathered, beach-collected microplastics. Beached particles, which have undergone environmental aging, triggered different and in some cases stronger toxic responses than their pristine counterparts.
Do microplastics induce oxidative stress in marine invertebrates?
AI summary Read the abstract
This review examined whether marine invertebrates exposed to microplastics show evidence of oxidative stress — a common cellular response to toxic injury — finding support for this effect across multiple species and polymer types. Oxidative stress is a key mechanism by which microplastics may harm marine organisms.
Ingestion of weathered high density polyethylene microplastics-induced oxidative stress and modulation of antioxidant responses in post larval stages of Litopenaeus vannamei
AI summary Read the abstract
Post-larval whiteleg shrimp (Litopenaeus vannamei) exposed to weathered high-density polyethylene microplastics showed elevated oxidative stress markers and upregulated antioxidant enzyme activity, demonstrating that even environmentally weathered PE particles remain toxic to marine invertebrates at early life stages.
A meta-analysis of potential biomarkers associated with microplastic ingestion in marine fish
AI summary Read the abstract
This meta-analysis found that microplastic exposure induces oxidative stress in marine fish, activating antioxidant defense enzymes like superoxide dismutase and catalase while inhibiting acetylcholinesterase. Both laboratory experiments and wild fish studies confirmed these harmful biochemical responses, indicating that environmental microplastic levels are already causing measurable physiological damage to marine species.
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.