Abstract
Summary Gonadotropin-releasing hormone (GnRH) has neuromodulatory roles in central and peripheral nervous systems. The purpose of this study is to evaluate the effect of GnRH analog (buserelin) on peripheral nerve regeneration. Forty adult male rats were divided into buserelin-treated, normal saline, sham surgery, and castrated + buserelin groups. The left sciatic nerve was crushed by a fine forceps and all animals were evaluated by sciatic functional index (SFI), electrophysiology, histology and immunohistochemistry testing. On post operation days 21 and 28, the difference between buserelin and normal saline groups was statistically significant (P 0.05). At the 28th day after operation, the diameters (µm) of the regenerated myelinated fibers of the buserelin group were significantly greater than those of the normal saline group (P<0.05). Although nerve conduction velocity (NCV) of the buserelin group was faster than the normal saline group, the difference was not statistically significant. The present study suggests that buserelin treatment might accelerate peripheral nerve regeneration.
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