2023-06-08 08:30:00
In the event of a wound or cut, the body goes through three phases of healing: the inflammatory phase, the tissue repair phase and the cell maturation phase. When the skin is cut or torn, the body fights off bacterial invaders, promotes the regrowth of damaged blood vessels, and creates a scar at the site of the wound.
An ink that accelerates the healing process
If the injury is too large, bandages or stitches are performed to prevent the risk of bleeding, and antibiotics may be prescribed to avoid complications related to infections. To speed up the natural healing process, Chinese researchers have developed a healing ink, which actively encourages the body to heal by exposing the wound to immune system white blood cells. White blood cells play an essential role in the formation of blood vessels and the reduction of inflammation during wound healing.
3D printing pen: promising results on injured mice
In their work published in the journal ACS Applied Materials & Interfaces, the researchers used white blood cells secreted by macrophages combined with sodium alginate, to develop a system called PAINT or “portable bioactive ink for tissue healing”. These components were then combined in a 3D printing pen, where they mixed at the tip of the pen and formed a solid gel at the site of injury within three minutes. White blood cells promoted blood vessel formation and reduced inflammatory markers in human cells.
Tests were also carried out on injured mice. Wounds in rodents treated with PAINT technology healed within 12 days, unlike those in mice that did not receive the treatment, which were not as advanced in the healing process.
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