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Enhancing food safety and cultivated meat production: exploring the impact of microplastics on fish muscle cell proliferation and differentiation
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Researchers investigated how microplastic contamination affects fish muscle cells used in cultivated meat production. They found that polystyrene microplastics impaired the ability of fish cells to grow and develop into muscle tissue, even at relatively low concentrations. The findings raise concerns about microplastic interference in both lab-grown seafood production and the safety of sourcing cells from marine organisms already exposed to plastic pollution.
Cultivated meat, a sustainable alternative to traditional livestock farming, has gained attention for its potential environmental and health benefits. However, concerns about microplastic contamination pose challenges, especially when sourcing cells from marine organisms prone to microplastic bioaccumulation. Additionally, the pervasive presence of microplastics in laboratory settings, ingredients, and during the production, increases the risk of unintentional contamination. This study focused on Atlantic mackerel ( Scomber scombrus ) skeletal muscle cell lines to examine the effects of microplastic exposure, represented by fluorescent polyethylene microspheres (10–45 µm) on cell performance including cell proliferation, cell viability, gene expression, and differentiation processes critical for cultivated meat production. The results revealed significant impacts on cell attachment and proliferation at microplastic concentrations of 1 μg/mL, 10 μg/mL, and 50 μg/mL. Notably, the 10 μg/mL concentration exerted the most pronounced effects on cell viability during both attachment and proliferation phases. While the results indicated that both microplastic concentration and size influence cell viability, cell differentiation remained unaffected, and additional contributing factors require further investigation. These findings underscore the necessity of thoroughly exploring microplastic-cell interactions to ensure food safety and safeguard health within the burgeoning cultivated meat industry.
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Investigating the Impact of Microplastics on Fish Muscle Cell Proliferation and Differentiation: Enhancing Food Safety in Cultivated Meat Production
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Researchers exposed Atlantic mackerel muscle cells to polyethylene microspheres at concentrations representative of environmental contamination and found that microplastics significantly impaired cell attachment and proliferation, particularly at 10 µg/mL. The findings matter for the growing cultivated meat industry, which sources cells from marine species already exposed to microplastics, raising food safety questions.
Polystyrene nanoplastics in the marine mussel Mytilus galloprovincialis.
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This study investigated how polystyrene nanoplastics affect Mediterranean mussels, an important marine species and human food source. Researchers found that these tiny plastic particles can cross cell membranes, accumulate in tissues, and trigger oxidative stress and immune responses. The findings suggest that nanoplastic pollution in the ocean could affect both marine ecosystem health and the safety of seafood consumed by people.
A study of the occurrence and potential risks of microplastics in fish and shellfish of Hong Kong
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Researchers analyzed microplastic contamination in nine commercial fish and shellfish species from Hong Kong and found plastic particles in both organ and flesh samples. Mussels had the highest microplastic content in edible flesh, with polystyrene and polyethylene being the dominant polymer types. Cell-based toxicity testing showed that microplastics from certain species caused increased intestinal cell death and hemolytic activity, indicating potential health risks from seafood consumption.
Polystyrene microplastics exposure in freshwater fish, Labeo rohita: evaluation of physiology and histopathology
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Researchers fed freshwater fish varying levels of polystyrene microplastics for 90 days and found dose-dependent damage to blood health, growth, and organ tissues. Higher microplastic concentrations caused more severe harm to the liver, kidneys, gills, and intestines. The study highlights that microplastics in freshwater systems can accumulate in fish and cause significant health problems, raising concerns about food safety for communities that rely on freshwater fish.
Toxicological Effects of Polystyrene Microplastics on Growth, Enzymatic Activity, Hematology, and Tissue Integrity in Labeo rohita
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Scientists exposed farmed fish (Rohu, a popular food fish) to microplastic pollution levels found in some contaminated waters and found it damaged their gills and intestines, slowed their growth, caused anemia-like symptoms, and made it harder for them to absorb nutrients from food. While this study was done in fish rather than humans, it matters because it shows microplastics can cause real physical harm to the animals we eat and to aquatic ecosystems overall—raising concerns about both food supply sustainability and the broader impact of plastic pollution making its way up the food chain.
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