There was a device for sorting spermatozoa: scientists told how it works

In in vitro fertilization (IVF), two sperm sorting methods are sometimes used.

According to scientists from the Sydney Institute of TechnologyUniversity in Australia, they can cause DNA fragmentation and cell death due to the introduction of reactive oxygen species. So they developed a new disk-shaped polymer device printed on a 3D printer.

It should imitate the female reproductive systemthe path is equipped with a special reservoir on the outside, which is connected to the central manifold by complex microfluidic channels. The idea is that when a sperm sample is placed in a reservoir, only the strongest and most active sperm pass through the channels into a special well. The experiment confirmed the success of the technology.

“We have conducted extensive testing on traditionalIVF selection methods, while the new method showed an improvement in DNA integrity by 85% and a reduction in sperm death by an average of 90%. In addition, sperm selected by our method showed better recovery after freezing,” explains Majid Varkiani, lead researcher and professor at the University of Technology Sydney in Australia.

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