PMID- 20307513 OWN - NLM STAT- MEDLINE DCOM- 20100810 LR - 20100507 IS - 1872-6240 (Electronic) IS - 0006-8993 (Linking) VI - 1332 DP - 2010 May 21 TI - Bone marrow stromal cell transplantation for treatment of sub-acute spinal cord injury in the rat. PG - 32-47 LID - 10.1016/j.brainres.2010.03.043 [doi] AB - Bone marrow stromal cells (BMSCs) have been studied as effective transplants for the treatment of spinal cord injury (SCI). Our previous study showed that BMSCs infused into the cerebrospinal fluid (CSF) exhibited distinct effects on the recovery of acute SCI. The present study examined the effects of BMSCs in sub-acute SCI (2weeks post-injury) by transplanting them directly into the lesion. The spinal cord was crush-injured at the Th8-9 level in rats, and 2weeks later, cultured BMSCs (5x10(5)) derived from GFP-transgenic rats of the same strain were transplanted into the lesion. Tissue repair and nerve regeneration were examined by immunohistochemistry and electron microscopy. GFP-labeled BMSCs survived as cell assemblies in the spinal cord for 1-2weeks after transplantation. The dorsal side of BMSC assemblies in the spinal cord usually showed an expanded GFAP-negative, astrocyte-devoid area, in which extracellular matrices including collagen fibrils were deposited. Numerous regenerating axons associated with Schwann cells grew out through such astrocyte-devoid extracellular matrices. Ascending (CGRP-containing) and descending (5HT- and TH-containing) axons were included in these regenerating axons. Regenerated axons were myelinated by Schwann cells beyond 2weeks post-transplantation. Cavity formation was reduced in the cell transplantation group. Locomotory behavior assessed by the BBB scale improved to 9.8 points in the cell transplantation group, while it was to 5.5-5.7 in the control. BMSC transplantation into lesions of advanced SCI has markedly beneficial effects on tissue repair and axonal outgrowth, leading to improved locomotion in rats. CI - Copyright 2010 Elsevier B.V. All rights reserved. FAU - Ide, Chizuka AU - Ide C AD - Department of Occupational Therapy, Faculty of Nursing and Rehabilitation, Aino University, Higashi-ohda, 4-5-4, Ibaragi City, Osaka, Japan. c-ide@ot-u.aino.ac.jp FAU - Nakai, Yoshiyasu AU - Nakai Y FAU - Nakano, Norihiko AU - Nakano N FAU - Seo, Tae-Beom AU - Seo TB FAU - Yamada, Yoshihiro AU - Yamada Y FAU - Endo, Katsuaki AU - Endo K FAU - Noda, Toru AU - Noda T FAU - Saito, Fukuki AU - Saito F FAU - Suzuki, Yoshihisa AU - Suzuki Y FAU - Fukushima, Masanori AU - Fukushima M FAU - Nakatani, Toshio AU - Nakatani T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100319 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 147336-22-9 (Green Fluorescent Proteins) RN - 9007-34-5 (Collagen) SB - IM MH - Animals MH - Astrocytes/physiology MH - Axons/physiology MH - Bone Marrow Cells/physiology MH - Bone Marrow Transplantation/*methods MH - Cells, Cultured MH - Collagen/metabolism MH - Disease Models, Animal MH - Extracellular Matrix/physiology MH - Female MH - Green Fluorescent Proteins/genetics MH - Locomotion/physiology MH - Myelin Sheath/physiology MH - Nerve Regeneration/physiology MH - Rats MH - Rats, Sprague-Dawley MH - Rats, Transgenic MH - Schwann Cells/physiology MH - Spinal Cord Injuries/pathology/physiopathology/*surgery MH - Stromal Cells/cytology/physiology/*transplantation MH - Time Factors EDAT- 2010/03/24 06:00 MHDA- 2010/08/11 06:00 CRDT- 2010/03/24 06:00 PHST- 2009/10/02 00:00 [received] PHST- 2010/03/11 00:00 [revised] PHST- 2010/03/15 00:00 [accepted] PHST- 2010/03/24 06:00 [entrez] PHST- 2010/03/24 06:00 [pubmed] PHST- 2010/08/11 06:00 [medline] AID - S0006-8993(10)00616-5 [pii] AID - 10.1016/j.brainres.2010.03.043 [doi] PST - ppublish SO - Brain Res. 2010 May 21;1332:32-47. doi: 10.1016/j.brainres.2010.03.043. Epub 2010 Mar 19.