PMID- 32337276 OWN - NLM STAT- MEDLINE DCOM- 20210119 LR - 20210119 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2020 DP - 2020 TI - Repairing and Analgesic Effects of Umbilical Cord Mesenchymal Stem Cell Transplantation in Mice with Spinal Cord Injury. PG - 7650354 LID - 10.1155/2020/7650354 [doi] LID - 7650354 AB - Transplantation of human umbilical cord mesenchymal stem cells (hUC-MSCs) into spinal cord injury (SCI) may alleviate neuropathic pain and promote functional recovery. The underlying mechanism likely involves activation of glial cells and regulation of inflammatory factors but requires further validation. SCI was induced in 16 ICR mice using an SCI compression model, followed by injection of lentiviral vector-mediated green fluorescent protein- (GFP-) labeled hUC-MSCs 1 week later. Behavioral tests, histological evaluation, and inflammatory factor detection were performed in the treatment (SCI+hUC-MSCs) and model (SCI) groups. Histological evaluation revealed GFP expression in the spinal cord tissue of the treatment group, implying that the injected MSCs successfully migrated to the SCI. The Basso, Beattie, and Bresnahan (BBB) scores showed that motor function gradually recovered over time in both groups, but recovery speed was significantly higher in the treatment group than in the model group. The pain threshold in mice decreased after SCI but gradually increased over time owing to the self-repair function of the body. The corresponding pain threshold of the treatment group was significantly higher than that of the model group, indicating the therapeutic and analgesic effects of hUC-MSCs. Expression of IL-6 and TNF-alpha in the spinal cord tissue of the treated group decreased, whereas glial cell line-derived neurotrophic factor (GDNF) expression along with ED1 expression increased compared with those in the model group, suggesting that SCI activated ED1 inflammatory macrophages/microglia, which were subsequently reduced by hUC-MSC transplantation. hUC-MSCs are speculated to enhance the repair of the injured spinal cord tissue and exert an analgesic effect by reducing the secretion of inflammatory factors IL-6 and TNF-alpha and upregulating the expression of GDNF. CI - Copyright (c) 2020 Ling-ling Wu et al. FAU - Wu, Ling-Ling AU - Wu LL AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. FAU - Pan, Xiao-Ming AU - Pan XM AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. FAU - Chen, Hao-Hao AU - Chen HH AUID- ORCID: 0000-0001-5496-7944 AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. FAU - Fu, Xiao-Yan AU - Fu XY AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. FAU - Jiang, Jinzhan AU - Jiang J AUID- ORCID: 0000-0003-0255-3373 AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. AD - Jinhua Center of Laboratory Animals, Jinhua Municipal Food and Drug Inspection Institute, Jinhua, 321000 Zhejiang Province, China. FAU - Ding, Ming-Xing AU - Ding MX AUID- ORCID: 0000-0001-5859-5770 AD - Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China. LA - eng PT - Journal Article DEP - 20200404 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Analgesics) RN - 0 (Ectodysplasins) RN - 0 (Gdnf protein, mouse) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Analgesics/*pharmacology MH - Animals MH - Ectodysplasins/metabolism MH - Glial Cell Line-Derived Neurotrophic Factor/metabolism MH - Interleukin-6/metabolism MH - Male MH - *Mesenchymal Stem Cell Transplantation MH - Mesenchymal Stem Cells/cytology MH - Mice MH - Mice, Inbred ICR MH - Recovery of Function/physiology MH - Spinal Cord/metabolism MH - Spinal Cord Injuries/physiopathology/*therapy MH - Tumor Necrosis Factor-alpha/metabolism MH - Umbilical Cord/*cytology PMC - PMC7165320 COIS- The authors declare that they have no conflict of interest. EDAT- 2020/04/28 06:00 MHDA- 2021/01/20 06:00 PMCR- 2020/04/04 CRDT- 2020/04/28 06:00 PHST- 2019/04/10 00:00 [received] PHST- 2019/07/02 00:00 [revised] PHST- 2020/02/10 00:00 [accepted] PHST- 2020/04/28 06:00 [entrez] PHST- 2020/04/28 06:00 [pubmed] PHST- 2021/01/20 06:00 [medline] PHST- 2020/04/04 00:00 [pmc-release] AID - 10.1155/2020/7650354 [doi] PST - epublish SO - Biomed Res Int. 2020 Apr 4;2020:7650354. doi: 10.1155/2020/7650354. eCollection 2020.