PMID- 30260554 OWN - NLM STAT- MEDLINE DCOM- 20191024 LR - 20191024 IS - 1552-4965 (Electronic) IS - 1549-3296 (Linking) VI - 106 IP - 12 DP - 2018 Dec TI - Xenogeneic acellular nerve scaffolds supplemented with autologous bone marrow-derived stem cells promote axonal outgrowth and remyelination but not nerve function. PG - 3065-3078 LID - 10.1002/jbm.a.36497 [doi] AB - Autologous nerves, artificial scaffolds or acellular nerve scaffolds are commonly used in bridging treatment for peripheral nerve defects. Xenogeneic acellular nerve scaffolds and allogeneic cellular nerve scaffolds have the same structural characteristics. Due to the wider source of raw materials, these latter scaffolds have high-potential value for applications. However, whether their heterogeneity will affect nerve regeneration is unknown. The current study evaluated the efficiency of xenogeneic acellular nerve scaffolds (XANs) combined with 5-ethynyl-2'-deoxyuridine (EdU)-labeling of autologous bone marrow-derived stem cells (BMSCs) for repair of a 1.5 cm gap in rat sciatic nerves. XANs from rabbit tibial nerves were prepared, the structure and components of the scaffolds were evaluated after completely removing the cellular components. Animals were divided into four groups based on graft: the simple XAN group, the XAN + BMSC group, the XAN + Media (from BMSC culture) group, and the autograft group. Serological immune tests showed that XANs induce an immune response in the first 2 weeks after transplantation. Moreover, cell tracking revealed that the proportion of EdU+ cells decreased over time, as shown by the measures at 2 days (70%), 4 days (20%), and 8 days (even <3%) postoperatively. Nerve functional analyses revealed that in contrast to the autograft group results, the XAN-BMSC, XAN + Media, and XAN groups did not exhibit good restoration of the sciatic functional index (SFI) or electrophysiological results (the peak action potential amplitudes) 12 weeks, postoperatively. However, the XAN-BMSC and autograft groups demonstrated greater remyelination and increased axon numbers and myelin thickness than the XAN + Media and XAN groups 12 weeks, postoperatively (p < .05). In conclusion, in the early stage of transplantation, XANs induce a certain degree of inflammation. Although the combination of XANs with autologous BMSCs enhanced the number of regenerated axons and the remyelination, the combination did not effectively improve the recovery of nervous motor function. (c) 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 3065-3078, 2018. CI - (c) 2018 Wiley Periodicals, Inc. FAU - Hou, Bo AU - Hou B AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Cai, Meiqin AU - Cai M AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Chen, Chuan AU - Chen C AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Ji, Wanqing AU - Ji W AD - Department of Obstetrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Province, 510623, Guangzhou, China. FAU - Ye, Zhuopeng AU - Ye Z AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Ling, Cong AU - Ling C AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Chen, Zhuopeng AU - Chen Z AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. FAU - Guo, Ying AU - Guo Y AUID- ORCID: 0000-0001-8797-9052 AD - Departments of Neurosurgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangdong Province, 510630, Guangzhou, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180907 PL - United States TA - J Biomed Mater Res A JT - Journal of biomedical materials research. Part A JID - 101234237 SB - IM MH - Animals MH - Cells, Cultured MH - Male MH - Mesenchymal Stem Cell Transplantation/methods MH - Mesenchymal Stem Cells/*cytology MH - *Nerve Regeneration MH - *Neuronal Outgrowth MH - Rabbits MH - Rats, Sprague-Dawley MH - *Remyelination MH - Tissue Scaffolds/*chemistry MH - Transplantation, Autologous/methods OTO - NOTNLM OT - bone marrow-derived stem cells OT - immune inflammation OT - motor function OT - nerve regeneration OT - nerve scaffold OT - xenogeneic EDAT- 2018/09/28 06:00 MHDA- 2019/10/28 06:00 CRDT- 2018/09/28 06:00 PHST- 2018/02/26 00:00 [received] PHST- 2018/06/07 00:00 [revised] PHST- 2018/06/27 00:00 [accepted] PHST- 2018/09/28 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] PHST- 2018/09/28 06:00 [entrez] AID - 10.1002/jbm.a.36497 [doi] PST - ppublish SO - J Biomed Mater Res A. 2018 Dec;106(12):3065-3078. doi: 10.1002/jbm.a.36497. Epub 2018 Sep 7.