LAUSR

OBJECTIVE   The purpose of this study was to investigate whether integrin levels are associated with axon regeneration after central nervous system (CNS) injury. MATERIALS AND METHODS By using immunohistochemistry, we performed a detailed investigation of the changes in and colocalization of integrins αv and α5, with Nogo-A in the retina after optic nerve injury. RESULTS We confirmed that integrins αv and α5 were expressed in the rat retina and colocalized with Nogo-A. After optic nerve transection, we found that integrin α5 levels increased over 7 days, but integrin αv levels remained unchanged, while Nogo-A levels increased. CONCLUSIONS It seems that the inhibition of axonal regeneration by the Amino-Nogo-integrin signaling pathway may not occur via changes in integrin levels.