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Nanoparticles aid bone growth
Date:6/13/2008

tudies.

Half the samples were examined four weeks after implantation and half after 12 weeks. While there was no notable difference in performance at four weeks, the nanotube composites exhibited up to threefold greater bone ingrowth after 12 weeks than the PPF. Furthermore, the researchers found the 12-week composite scaffolds contained about two-thirds as much bone tissue as the nearby native bone tissue, while the PPF contained only about one-fifth as much.

Mikos said the nanocomposites performed better than anticipated. In fact, the results indicate that they may go beyond passive guides and take an active role in promoting bone growth.

"We don't yet know the exact mechanism of this enhanced bone formation, but we have intensive studies under way to find out," Mikos said. "It could be related to changes in surface chemistry, strength or other factors."


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Contact: B.J. Almond
balmond@rice.edu
713-348-6770
Rice University
Source:Eurekalert

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