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Microplastics in water are easily absorbed by cells

wallpapers News 2020-06-29

plastic waste on the drina River in Bohemia. Photo source: Eldar Emric / AP

recently a new study published in the Journal of scientific progress shows that microplastic particles exposed to fresh water or saline water for several weeks are more easily absorbed by the cells of laboratory mice suggesting that microplastics in the environment may be easier to enter cells than we think.

researchers usually use clean or "raw" microplastics particles about the potential impact of ingestion of microplastics on animals. However these particles can not be completely equivalent to the microplastics in nature because the microplastic particles in nature will be covered by other substances in the environment.

Anja ramsperger of the University of Bayreuth in Germany colleagues placed the original microplastic particles in saline water in an artificial freshwater pond or marine aquarium for two to four weeks. Both environments are inhabited by different animal plant microbial communities. The researchers tried to simulate the natural environment in which microplastics are exposed before entering human animal bodies.

the researchers then exposed the microparticles to mouse cells in laboratory dishes observed them under a microscope. It was found that the cultured plastic particles were 10 times more likely to be absorbed by the cells in fresh or saline water than the original particles preserved in pure water.

team suspected that this may be caused by the biological molecular layer of protein carbohydrate fat wrapped on the surface of microplastic particles. "We are currently investigating this it may be that some molecules attached to the surface of microplastic particles enhance the ability of cells to internalize." Ramsperger said.

"most of our current studies on the absorption of microplastic particles are based on the original particles without environmental regulation." Douglas Walker of the Icahn School of medicine in Mount Sinai believes that this may have led researchers to underestimate the ease with which microplastics enter the body.

"future research needs to use more complex models to better assess the risks of microplastic particles to humans other organisms." Walker said. For information about

please refer to: https://doi.org/10.1126/sciadv.abd1211

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