Growth-promoting activity of Sanyak (Dioscoreae rhizoma) extract on injured sciatic nerve in rats.

J Acupunct Meridian Stud

Department of Oriental Medicine, Daejeon University, Daejeon, Korea.

Published: September 2009

AI Article Synopsis

  • The study tests how Sanyak (Dioscoreae rhizome) affects the recovery of the sciatic nerve in rats after a crush injury.
  • Sanyak extract applied at the injury site boosts the levels of certain proteins (GAP-43 and Cdc2) important for nerve regeneration.
  • Results indicate that Sanyak not only enhances axon growth but also increases non-neuronal cell numbers, suggesting it promotes healing in damaged peripheral nerves.

Article Abstract

The present study evaluates the potential effects of Sanyak (Dioscoreae rhizome) on the regenerative capacity of the peripheral sciatic nerve after crush injury in rats. Focal application of Sanyak extract at the injury site increased GAP-43 and Cdc2 protein levels in the distal portion of the injured nerve. Immunohistochemical analysis showed that the signals of phospho-vimentin as Cdc2 substrate protein were almost colocalized with Cdc2. Retrograde DiI-tracing revealed enhancement in distal elongation of regenerating axons. Furthermore, the number of non-neuronal cells was higher in Sanyak-treated animals than saline controls. Thus, these data suggest that Sanyak extract is effective for promoting regenerative responses in injured peripheral neurons.

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http://dx.doi.org/10.1016/S2005-2901(09)60059-5DOI Listing

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