EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY, vol.279, no.2, pp.987-994, 2022 (SCI-Expanded)
Purpose There is still no widely-accepted local agent proven to be effective in nerve regeneration. We aimed to investigate the effects of chitosan gel and platelet-rich plasma Materials and methods Electrophysiological measurements were performed before and immediately after injury. The injured nerves were covered with spongostan impregnated with the following agents: Group 1 (Control Group): Saline at a dose of 50 mu l; Group 2: Chitosan (CHT) at a dose of 50 mu l; Group 3: PRP at a dose of 50 ml; and Group 4: a solution of CHT with PRP (1:1). The final measurements were performed after 3 weeks and the injured nerve of each rat was removed. Results There were statistically-significant differences between the groups regarding the measurements of the after-treatment values of stimulus threshold (p < 0.05). The best improvement in electrophysiological measurement and histopathological evaluation was found in Group 4 (CHT-PRP). Conclusion Chitosan gel has a positive effect on nerve healing and applying it along with PRP can enhance the effect of chitosan.