We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Expanded Polystyrene-Debris-Induced Genotoxic Effect in Littoral Organisms
AI summary Read the abstract
Researchers studied the genotoxic effects of expanded polystyrene debris on marine mollusks from the Sea of Japan. The study found that exposure to expanded polystyrene induced oxidative stress and DNA damage in both mussels and snails, raising concerns about the impact of this widespread packaging material on coastal organisms.
Expanded polystyrene (EPS) is a major component of plastic debris in the environment, including coastal and littoral zones. EPS is widely used in various industries including fish farming and aquaculture, which poses a serious potential threat not only to cultured hydrobionts but also to all living organisms, including humans. This paper presents the results of experimental studies on the effects of EPS (0.024 m2/L) on marine mollusks Mytilus trossulus and Tegula rustica, which are typical inhabitants of the upper littoral of Peter the Great Bay (Sea of Japan), belonging to different systematic groups and differing in the type of nutrition. The results of biochemical marker analysis showed the development of oxidative stress processes. Thus, increasing malondialdehyde content relative to control values was registered in the digestive glands of M. trossulus and T. rustica. In the cells of the digestive glands of M. trossulus, integral antioxidant activity decreased more than 1.5 times compared with that of the control. The change in the concentration of protein carbonyls was unchanged in M. trossulus, whereas in T. rustica, there was a 1.5-fold increase. EPS exposure also resulted in significant DNA damage in the studied mollusks-the damage level increased 2.5-fold in M. trossulus and 1.5-fold in T. rustica relative to the control, indicating the genotoxic potential of EPS litters.
More Papers Like This
Genotoxic Properties of Polystyrene (PS) Microspheres in the Filter-Feeder Mollusk Mytilus trossulus (Gould, 1850)
AI summary Read the abstract
Polystyrene microspheres were tested for genotoxic effects in the filter-feeding mussel Mytilus trossulus, finding that exposure caused DNA strand breaks and other genetic damage in gill and hemocyte cells. The study contributes evidence that microplastic particles can induce genotoxicity in marine bivalves used as pollution bioindicators.
Evaluation of genotoxic and mutagenic potential of polystyrene nanoplastics in forked venus clam, Gafrarium divaricatum (Gmelin, 1791)
AI summary Read the abstract
Researchers evaluated the genotoxic and mutagenic effects of polystyrene nanoplastics on an intertidal clam species over exposure periods of 96 hours and 15 days. They found significant time- and concentration-dependent DNA damage, micronuclei formation, and altered expression of stress and DNA repair genes in gill and intestinal tissues. The study demonstrates that nanoplastics can cause genetic damage in marine bivalves, raising concerns about their ecological impact.
Chronic toxicity of polystyrene nanoparticles in the marine mussel Mytilus galloprovincialis
AI summary Read the abstract
Researchers exposed Mediterranean mussels to polystyrene nanoplastics (50 nm, 10 µg/L) for 21 days and found genotoxicity in blood cells and overwhelmed antioxidant defenses in gills and digestive glands, with gills showing the most severe tissue-level oxidative damage over time.
Cytotoxicity of polystyrene nanoplastics involves mitochondrial dysfunction and DNA damage in hemocytes of the Pacific oyster
AI summary Read the abstract
Researchers used an in vitro cellular bioassay with Pacific oyster hemocytes to investigate the toxicity of polystyrene nanoplastics, finding that 24-hour exposure caused mitochondrial dysfunction, elevated reactive oxygen species, and DNA damage. The results identify immune cell mitochondria as key targets of nanoplastic cytotoxicity in marine bivalves.
Virgin Polystyrene Microparticles Exposure Leads to Changes in Gills DNA and Physical Condition in the Mediterranean Mussel Mytilus Galloprovincialis
AI summary Read the abstract
Researchers exposed Mediterranean mussels (Mytilus galloprovincialis) to virgin polystyrene microparticles and found significant DNA damage in gill tissue and reduced physical condition, suggesting that even virgin microplastics pose a genotoxic risk to marine filter feeders.
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.