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News2009February › Self-healing: Brain repairs itself after a stroke › February 2009

Self-healing: Brain repairs itself after a stroke

Our brain has the ability to repair itself following a stroke

Our brain has the ability to repair itself following a stroke. It can create new networks of arteries to restore the blood supply to damaged tissue, often starved of oxygen, a new study has discovered.

They also have the ability to dilate at critical points around the head in order to maintain a constant delivery of new blood cells.

Neurosurgeons recognise that the hours following a stroke are critical as brain tissue may die if it is starved of oxygen and nutrients.

Lead researcher David Kleinfeld from the University of California, San Diego, commented: "Vessels on the surface of the brain have a mesh-like architecture. One consequence of that is that it operates like a grid system that redistributes 'current flow as you need'".

(Source: Journal of Cerebral Blood Flow & Metabolism, 2009; published online 28 January 2009; doi:10.1038/jcbfm.2008.166).


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