Implantation of neural stem cells via cerebrospinal fluid into the injured root.
In avulsion injury of the dorsal root, regenerating axons cannot extend through the entry zone, i.e. the transition zone between peripheral and central nervous systems, due to the discontinuity between Schwann cells and astrocytes. We infused neural stem cells through the 4th ventricle in an attempt to enhance axonal growth in injured dorsal roots. Infused stem cells were attached to, and integrated into, the lesion of the root and became associated with axons in the same manner as Schwann cells or perineurial sheath cells in the peripheral nerve, and as astrocytes in the central nerve area. These findings suggest that neural stem cells integrated by infusion through CSF might have a beneficial effect on nerve regeneration by inducing a continuity of Schwann cells and astrocytes at the transition zone.
Ohta
Masayoshi
M
Department of Plastic and Reconstructive Surgery, Kyoto University Graduate School of Medicine, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
Suzuki
Yoshihisa
Y
Noda
Toru
T
Kataoka
Kazuya
K
Chou
Hirotomi
H
Ishikawa
Namiko
N
Kitada
Masaaki
M
Matsumoto
Naoya
N
Dezawa
Mari
M
Suzuki
Shigehiko
S
Ide
Chizuka
C
D000818:Animals; D030801:Animals, Genetically Modified; D001253:Astrocytes / Q000502:physiology / Q000648:ultrastructure; D001369:Axons / Q000502:physiology / Q000648:ultrastructure; D002454:Cell Differentiation / Q000502:physiology; D002478:Cells, Cultured; D002555:Cerebrospinal Fluid / Q000166:cytology / Q000502:physiology; D004195:Disease Models, Animal; D005333:Fetus; D020546:Fourth Ventricle / Q000166:cytology / Q000502:physiology / Q000601:surgery; D006085:Graft Survival / Q000502:physiology; D007276:Injections, Intraventricular / Q000379:methods; D009416:Nerve Regeneration / Q000502:physiology*; D009474:Neurons / Q000166:cytology / Q000502:physiology / Q000637:transplantation*; D010525:Peripheral Nerves / Q000254:growth & development / Q000648:ultrastructure; D011843:Radiculopathy / Q000473:pathology / Q000503:physiopathology / Q000628:therapy*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012583:Schwann Cells / Q000502:physiology / Q000648:ultrastructure; D013126:Spinal Nerve Roots / Q000254:growth & development* / Q000293:injuries* / Q000503:physiopathology; D033581:Stem Cell Transplantation / Q000379:methods*; D013234:Stem Cells / Q000166:cytology / Q000502:physiology; D013346:Subarachnoid Space / Q000166:cytology / Q000502:physiology; D016896:Treatment Outcome