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Nanoplastic impact on bone microenvironment: A snapshot from murine bone cells
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This study found that nanoplastics are toxic to bone cells in mice, causing cell death, increased production of damaging reactive oxygen species, and disruption of the bone remodeling process. The nanoplastics impaired the ability of bone-building cells to migrate and promoted the formation of bone-destroying cells. These findings suggest that nanoplastic exposure could potentially contribute to bone diseases like osteoporosis, though more research in living animals and humans is needed.
Our world is made of plastic. Plastic waste deeply affects our health entering the food chain. The degradation and/or fragmentation of plastics due to weathering processes result in the generation of nanoplastics (NPs). Only a few studies tested NPs effects on human health. NPs toxic actions are, in part, mediated by oxidative stress (OS) that, among its effects, affects bone remodeling. This study aimed to assess if NPs influence skeleton remodeling through OS. Murine bone cell cultures (MC3T3-E1 preosteoblasts, MLOY-4 osteocyte-like cells, and RAW264.7 pre-osteoclasts) were used to test the NPs detrimental effects on bone cells. NPs affect cell viability and induce ROS production and apoptosis (by caspase 3/7 activation) in pre-osteoblasts, osteocytes, and pre-osteoclasts. NPs impair the migration capability of pre-osteoblasts and potentiate the osteoclastogenesis of preosteoclasts. NPs affected the expression of genes related to inflammatory and osteoblastogenic pathways in pre-osteoblasts and osteocytes, related to the osteoclastogenic commitment of pre-osteoclasts. A better understanding of the impact of NPs on bone cell activities resulting in vivo in impaired bone turnover could give more information on the possible toxicity consequence of NPs on bone mass and the subsequent public health problems, such as bone disease.
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Nanoplastic impact on bone microenvironment: A snapshot from murine bone cells.
AI summary Read the abstract
Researchers investigated how nanoplastics affect the bone microenvironment using murine bone cell models, examining effects on osteoblast and osteoclast activity that regulate bone formation and resorption. Nanoplastic exposure disrupted bone cell function, raising concerns about skeletal health impacts from daily plastic particle exposure.
Nanoplastic impact on bone microenvironment: A snapshot from murine bone cells.
AI summary Read the abstract
This study examined how nanoplastics affect bone cell function in a murine model, investigating effects on osteoblasts and osteoclasts that govern bone formation and resorption in the bone microenvironment. Nanoplastic exposure altered bone cell activity, suggesting that daily plastic particle exposure could have long-term implications for bone health.
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Researchers reviewed how nanoplastics affect the bone microenvironment, focusing on oxidative stress pathways and extracellular matrix disruption as key mechanisms of toxicity. Reactive oxygen species generated by nanoplastic exposure were identified as drivers of bone cell damage.
Effects of microplastics on the bones: a comprehensive review
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This comprehensive review examines the growing evidence that micro- and nanoplastics can affect bone health, with researchers recently detecting plastic particles in human bone tissue for the first time. Lab studies show that microplastics can trigger inflammation, increase bone-resorbing cell activity, impair bone-forming cells, and weaken bone structure in animal models. While direct links to human bone conditions like osteoporosis have not yet been confirmed, the accumulating evidence suggests that microplastic exposure may represent a new risk factor for skeletal health.
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