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Amino-Modified Nanoplastics at Predicted Environmental Concentrations Cause Transgenerational Toxicity Through Activating Germline Egf Signal in Caenorhabditis Elegans
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Amino-modified nanoplastics at predicted environmental concentrations cause transgenerational toxicity through activating germline EGF signal in Caenorhabditis elegans
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Researchers found that amino-modified nanoplastics, even at concentrations expected in the real environment, can cause toxic effects that pass from one generation to the next in the roundworm C. elegans. The transgenerational harm was linked to activation of a specific growth factor signal in reproductive cells. The study suggests that surface chemistry on nanoplastics may amplify their biological risks beyond what the base plastic alone would cause.
Nanoplastic Exposure at Predicted Environmental Concentrations Induces Activation of Germline Ephrin Signal Associated with Toxicity Formation in the Caenorhabditis elegans Offspring
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Researchers discovered that nanoplastic exposure at environmentally relevant concentrations activates the germline Ephrin signaling pathway in C. elegans, revealing a molecular mechanism underlying transgenerational toxicity formation in offspring.
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Tiny plastic particles from our environment can pass from a mother to her baby through the placenta and breast milk, and this review of existing animal research shows these particles can build up in offspring and potentially disrupt healthy development, causing issues like inflammation, cell damage, and hormone problems. While most of this evidence comes from animal studies so far, it's a wake-up call that plastic pollution may affect not just the people exposed to it, but their children too, making it worth pushing for both more research in humans and stronger policies to cut down plastic exposure.
The Toxicity of (Nano)Microplastics on C. elegans and Its Mechanisms
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Researchers reviewed the toxicological effects of micro- and nanoplastics on the model organism Caenorhabditis elegans, finding that these particles cause oxidative stress, reproductive impairment, developmental delays, and neurological dysfunction, with nanoplastics generally more toxic than microplastics due to their greater cellular penetration.
Simulated Environmental Nanoplastics Induce Zebrafish Developmental Toxicity and Stress Response
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Scientists exposed zebrafish embryos to nanoplastics that were specially broken down to mimic how plastic actually degrades in oceans and rivers, and found they caused more harm than the lab-made plastic beads typically used in research, stunting growth, slowing hatching, and triggering stress hormone spikes even at very low doses. Because these effects showed up at concentrations similar to what's found in real water sources, the findings suggest current safety testing may be underestimating the risks nanoplastics pose to both aquatic life and, potentially, to people who drink that water or eat seafood from it.
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