The World Daily
Plastic particles found to pass from rodent mother to child

Microplastics, pictured, have been found in human organs, Photo:TWD

 

By Patryk Krych | The World Daily | MARCH 19th 2021

 

A recent study performed on rats has revealed that the process of plastic nanoparticles through a pregnant rat mother’s body will be passed on to the unborn foetus – though whether this is the same for humans is yet unknown.

The study, published in the journal ‘Particle and Fibre Toxicology’ revealed that when it comes to these pregnant rats, microplastics from their lungs will pass on to the foetuses, into their hearts, brains and other vital organs.

The study is a first of its kind, in revealing that the placenta will have no affect in stopping the travel of microplastics between mother and foetus among mammals.

“We found the plastic nanoparticles everywhere we looked – in the maternal tissues, in the placenta and in the foetal tissues,” said Professor Phoebe Stapleton from Rutgers University, who led the study. “We found them in the foetal heart, brain, lungs, liver and kidney.”

The need for this research had been triggered back in December, when scientists experimenting on donated placentas had discovered that they were contaminated with tiny particles of plastic – particles they now suspect may have been passed down from the mothers.

“It is like having a cyborg baby: no longer composed only of human cells, but a mixture of biological and inorganic entities,” said Antonio Ragusa, director of obstetrics and gynaecology at the San Giovanni Calibita Fatebenefratelli hospital in Rome, and who led the placenta study in December. “The mothers were shocked.”

The dangers of microplastics are widespread, with tiny particles of the toxic contaminants having been found as high up as the top of Mount Everest, and as deep down as the bottom of the Mariana Trench.

“It is however important not to over-interpret these results,” said Professor John Boland from Trinity College Dublin (TCD), who wasn’t involved in the study. “The nanoparticles used are near spherical in shape, whereas real microplastics are irregular flake-like objects. Shape matters, as it dictates how particles interact with their environment.”

 

According to the rat study, the foetuses that had been contaminated by microplastics showed several worrying complications – they would put on much less weight towards the end of their gestation periods. Other negative effects of the plastic contaminations have yet to be observed, though they are expected.

“This study is very important because it proves the potential to transfer [plastic particles] in mammal pregnancy – maybe it is happening from the very beginning of human life as well,” said a member of the rat study, Dunzhu Li from TCD. “The particles were found almost everywhere in the foetus and can also pass through the blood-brain barrier – it is very shocking.”

“Our working theory is that something in the maternal vasculature changes, so you get a reduction in blood flow, which in turn leads to a reduction in nutrient and oxygen delivery,” added Stapleton, stating that more research would be necessary. “This study answers some questions and opens up other questions. We now know the particles are able to cross into the foetal compartment, but we don’t know if they’re lodged there or if the body just walls them off, so there’s no additional toxicity.”

The mother rats were purposefully contaminated through the tracheas for the experiment. The next step to the study will be to have them be put into “inhalation chambers” to see whether the results vary.

 

By Patryk Krych | © The World Daily 2021