Thursday, April 10, 2008

Inject-A-Spinal Cord

Technology Review:

Previously, researchers have restored function in the paralyzed hind legs of mice, but those experiments involved surgically implanting various types of material, while the new substance can simply be injected into the animals. The nanofibers break down into nutrients in three to eight weeks, says Stupp.


The new material is different because the researchers can inject it as a liquid directly into the spinal cord. Negatively charged molecules in the liquid start clumping together when they come in contact with positively charged particles such as calcium and sodium ions in the body. The molecules self-assemble into hollow, cylindrical nanofibers, which form a scaffold that can trap cells. On the surface of the nanofibers are biological molecules that inhibit scars and encourage nerve fibers to grow.


Digg!

1 comment:

angelina said...

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-Merlin