A previously unknown mechanism through which the brain produces
new nerve cells after a stroke has been discovered at Lund University and
Karolinska Institutet in Sweden. The findings have been published in the
journal SCIENCE.
A stroke is caused by a blood clot blocking a blood vessel
in the brain, which leads to an interruption of blood flow and therefore a
shortage of oxygen. Many nerve cells die, resulting in motor, sensory and
cognitive problems.