PMID- 29893084 OWN - NLM STAT- MEDLINE DCOM- 20190211 LR - 20190215 IS - 1872-2075 (Electronic) IS - 1000-3061 (Linking) VI - 34 IP - 5 DP - 2018 May 25 TI - [Protective effect of transplantation of bone mesenchymal stem cells on demyelination in spinal cord injury]. PG - 761-776 LID - 10.13345/j.cjb.170406 [doi] AB - Bone mesenchymal stem cells (BMSCs) have been used worldwide to treat spinal cord injury, but their therapeutic mechanism is poorly understood. In this study, BMSCs were transplanted to aneurysm clip-injured rats to demonstrate their protective effect. We observed myelin sheaths through Luxol fast blue (LFB) staining, osmic acid staining, TUNEL and transmission electron microscopy (TEM). We performed Western blotting to analyze the expressions of brain-derived neurotrophic factor (BDNF) and caspase 3. BMSCs were transplanted at 1, 7 and 14 days after spinal cord injury. Hindlimb movement (Basso, Beattie and Bresnahan; BBB) score, CNPase (2', 3'-cyclic-nucleotide 3'-phosphodiesterase), myelin basic protein (MBP) and caspase 3 protein levels were detected. Immunofluorescence was used to test the differentiation of BMSCs after implanted into damaged spinal cord and co-expression of CNPase-caspase 3+. At 7 days after BMSCs transplantation, some injected BMSCs expressed neuronal and oligodendrocyte markers. And both locomotor skills and ultra-structural features of myelin sheaths were significantly improved. The expressions of BDNF were clearly increased by BMSCs transplantation, the expression of caspase 3 was the opposite. Compared with the 1 and 14 days transplantation after spinal cord injury, MBP and CNPase expressions were highest, caspase 3 expression was lowest in 7 days BMSCs transplantation. After BMSCs transplantation, CNPase-caspase 3+ cells scattered in the white matter of the spinal cord. Therefore, BMSCs had a tendency to differentiate into neurons and oligodendrocytes after transplantation, which could promote the secretion of BDNF. BMSCs protected neural myelin sheaths by inhibiting oligodendrocyte apoptosis via increased secretion of BDNF after SCI. The best therapeutic time was 7 days after spinal cord injury. FAU - Gou, Yang AU - Gou Y AD - Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China. FAU - Liu, Danyan AU - Liu D AD - Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China. FAU - Liu, Jinfeng AU - Liu J AD - Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China. FAU - Sun, Hongran AU - Sun H AD - Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China. LA - chi PT - Journal Article PL - China TA - Sheng Wu Gong Cheng Xue Bao JT - Sheng wu gong cheng xue bao = Chinese journal of biotechnology JID - 9426463 RN - EC 3.4.22.- (Casp3 protein, rat) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Animals MH - Caspase 3/metabolism MH - Demyelinating Diseases/*therapy MH - *Mesenchymal Stem Cell Transplantation MH - Mesenchymal Stem Cells/*cytology MH - Rats MH - Spinal Cord Injuries/*therapy OTO - NOTNLM OT - apoptosis OT - bone mesenchymal stem cells OT - cell transplantation OT - spinal cord injury EDAT- 2018/06/13 06:00 MHDA- 2019/02/12 06:00 CRDT- 2018/06/13 06:00 PHST- 2018/06/13 06:00 [entrez] PHST- 2018/06/13 06:00 [pubmed] PHST- 2019/02/12 06:00 [medline] AID - 10.13345/j.cjb.170406 [doi] PST - ppublish SO - Sheng Wu Gong Cheng Xue Bao. 2018 May 25;34(5):761-776. doi: 10.13345/j.cjb.170406.