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Nerve conduit represents a promising strategy to contribute to nerve regeneration by bridging injured nerve gaps. However, due to a unique microenvironment of nerve tissue, autologous nerves have not been substituted by nerve conduit. Nerve regeneration after nerve conduit implantation depends on many factors, such as conductivity and biocompatibility. Therefore, Gelatin (Gel) with biocompatibility and polypyrrole (Ppy) with conductivity is highly concerned. In this paper, Gel\u2010Ppy modified nerve conduit was fabricated with great biocompatibility and conductivity to evaluate its properties of enhancing nerve regeneration in vivo and in vitro. The proliferation of Schwann cells on Gel\u2010Ppy modified nerve conduit was remarkably increased. Consistent with in vitro results, the Gel\u2010Ppy nerve conduit could contribute to the regeneration of Schwann cell in vivo. The axon diameters and myelin sheath thickness were also enhanced, resulting in the amelioration of muscle atrophy, nerve conduction, and motor function recovery. To explain this interesting phenomenon, western blot results indicated that the Gel\u2010Ppy conduit facilitated nerve regeneration via upregulating the Rap1 pathway to induce neurite outgrowth. Therefore, the above results demonstrated that Gel\u2010Ppy modified nerve conduit could provide an acceptable microenvironment for nerve regeneration and be popularized as a novel therapeutic strategy of PNI.<\/jats:p>","DOI":"10.1096\/fj.202201969r","type":"journal-article","created":{"date-parts":[[2023,4,13]],"date-time":"2023-04-13T11:27:00Z","timestamp":1681385220000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["The role of\n                    <scp>Gel\u2010Ppy<\/scp>\n                    \u2010modified nerve conduit on the repair of sciatic nerve defect in rat model"],"prefix":"10.1096","volume":"37","author":[{"given":"Liangfu","family":"Jiang","sequence":"first","affiliation":[{"name":"Key Laboratory of Orthopedics of Zhejiang Province, Department of Orthopedics (Division of Wound Repair), The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of 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