Fig. 1. Temporal changes of IGF-1 after sciatic nerve transection.
Localization of IGF-1 in the DRGs (a) and proximal nerve stumps (b) by immunohistochemistry at 0 and 7 days following sciatic nerve injury. SCs and DRGs were labeled with S100 and NF200, respectively. Scale bar: 20 μm. The expression change of IGF-1 at mRNA (c) and protein levels (d) in DRGs and proximal nerve segment following sciatic nerve transection, respectively. *p < 0.05 and ** p < 0.01 versus control (0 h). GAPDH served as internal reference