Human mesenchymal stem cells implantation into the degenerated coccygeal disc of the rat |
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Authors: | Je Hoon Jeong Eun Sun Jin Joong Kee Min Sang Ryong Jeon Chan-Sik Park Hyun Soo Kim Kyoung Hyo Choi |
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Institution: | (1) Department of Neurological Surgery, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea;(2) Laboratory of Stem Cell Therapy, College of Medicine, Asan Medical Center, University of Ulsan, Seoul, Korea;(3) FCB-Pharmicell, Sungnam-si, South Korea;(4) Department of Rehabilitation Medicine, Asan Medical Center, College of Medicine, University of Ulsan, 388-1 Pungnap-2dong, Songpa-gu, Seoul, 138-736, Korea |
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Abstract: | In this study, the authors explored the effect of human mesenchymal stem cell (MSC) implantation on the restoration of degenerative
intervertebral discs (IVDs) in the rat. A unique rat coccygeal model was used to investigate the effects of transplanting
human MSCs and to examine MSC survival in degenerative discs. MSC implantations into rat coccygeal IVDs were performed at
2 weeks post-injury. Radiologic and histologic evaluations were performed at 2, 4, 6, and 8 weeks post-injury. MSC-injected
segments (TS) retained disc height and signal intensity, but injured non-injected segment (IS) progressively lost disc height.
Pathological results revealed that the TS group showed relative restoration of the inner annulus structure; however, the IS
group showed destruction of the inner annulus structure. Immunohistochemical staining using Anti-Human Nucleic Antibody (#MAB1281
Chemicon) revealed positive staining in the TS group at 2 weeks post-transplantation (4 weeks post-injury). This study shows
that human MSCs survive for 2 weeks after transplantation into the IVDs of rats, and that MSCs increased the heights and signal
intensities of intervertebral disc. |
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Keywords: | Mesenchymal stem cell Animal model Intervertebral Disc Degeneration |
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