The adult brain can repair itself better than scientists thought
The adult brain may be far better at repairing itself than scientists once believed. In mice, researchers discovered a special group of support cells called astrocytes that respond to damaged brain tissue by rebuilding lost cellular networks. Rather than simply moving into the injured area, these cells perform a remarkable maneuver: they create new nuclei and send them traveling through long…
Recent research conducted at the University of Zurich in Switzerland suggests that the adult human brain possesses a greater capacity to heal itself than previously thought. In experiments involving mice, scientists discovered that specialized support cells, known as astrocytes, can repopulate damaged brain tissue in an unexpected manner.
Typically, when astrocytes are destroyed due to injury or autoimmune diseases such as neuromyelitis optica spectrum disorder, the adult brain was believed to be unable to replace them fully. However, this study challenges that assumption by identifying specialized regenerative astrocytes that gather around the edges of damaged brain regions and assist in rebuilding the lost astrocyte network.
While these cells do more than just divide, they also carry out an unusual process where newly formed nuclei from daughter cells travel considerable distances through the astrocytes toward the injured area, ultimately knitting the astrocyte network back together. This new understanding of the brain's repair mechanisms could lead to innovative approaches in supporting recovery from ailments caused by the loss of astrocytes, potentially improving the treatment of certain brain disorders.
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