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Biochar Alleviates Nanoplastics and Bisphenol a Mediated Immunological, Neurological and Gut Microbial Toxicity in Channel Catfish Ictalurus Punctatus
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Biochar alleviates nanoplastics and bisphenol A mediated immunological, neurological and gut microbial toxicity in channel catfish Ictalurus punctatus
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Researchers investigated whether biochar, a carbon-rich material made from organic waste, could reduce the toxic effects of nanoplastics and bisphenol A on channel catfish. They found that adding biochar to the water significantly lessened tissue damage, immune disruption, and harmful changes to gut bacteria caused by these contaminants. The study suggests biochar could serve as a practical tool for mitigating plastic-related pollution in aquaculture environments.
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Humic acids — naturally occurring organic compounds in freshwater — alter the surface properties of nanoplastics and modulate their toxicity to fish, in some cases reducing harm and in others increasing it. This finding shows that environmental context matters when assessing nanoplastic risk, as water chemistry can substantially shift biological outcomes.
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Researchers reviewed the physiological and immunological effects of microplastic exposure in fish, finding that these particles smaller than 5 mm induce a range of biological disruptions including immune modulation, oxidative stress, and systemic health impacts with broader implications for aquatic ecosystem integrity.
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This review pulls together existing studies showing that tiny plastic particles (micro- and nanoplastics) can build up in fish, damaging their gut, gills, heart, brain, and immune system by causing inflammation and cellular stress. While this research was done in fish, it matters for us too, since these plastics are widespread in water and seafood, and fish share many biological similarities with humans, meaning our bodies could face similar risks from ongoing plastic exposure.
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