NDLI: Establishment of a Spinal Cord Injury Model in Adult Rats by an Electrocircuit-Controlled Impacting Device and its Pathological Observations

Content Provider	Springer Nature Link
Author	Wang, Yun Liu, Chun feng Wang, Qi ping Gao, Heng Na, Han rong Yu, Ru tong
Copyright Year	2013
Abstract	One of the crucial challenges in medicine is the treatment and rehabilitation of spinal cord injury (SCI). In this study, we established a stable and reproducible acute spinal cord injury model in adult rats. The SCI was inflicted by our self-innovated spinal cord impact device controlled by electrical circuit. The Basso, Beattie, and Bresnahan Locomotor Rating Scale (BBB) score, electrophysiology, histological, and immunohistochemical changes after SCI were observed. The BBB score of the injured rats began to increase from the 3rd day of SCI and reached at the score 7.2 ± 1.3 at the 28th day. The latency of cortical somatosensory evoked potentials (CSEP) was not observed 2 and 6 h after injury, but appeared 24 h after injury which was significantly prolonged. It recovered from day 3 gradually to 27.3 ± 2.7 ms on day 28. H&E staining showed that the structure of gray and white matter was disrupted after the SCI. The result also showed dramatic neuron degenerations, cellular swelling, and the proliferation of glial cells. The immunohistochemical analysis showed that the expression of neuron specific enolase (NSE) and neurofilament 200 (NF200) started lowering at 2 h and dropped to the bottom at 24 h. Their expression rebound from day 3 and yet to the original level at day 28 (P < 0.05). The number of cells expressing glial fibrillary acidic protein (GFAP) hiked from day 3, peaked at day 14, and began recovering from day 28 (P < 0.05). The changes of NSE, NF200, GFAP, and CSEP were significantly associated with the BBB score (P < 0.05). In conclusion, our self-innovated device can reproduce the injury model stably. The changes of NSE, NF, and GFAP after spinal cord injury reflect the characteristics of pathological change, which are closely associated with the functional recovery from the spinal cord injury.
Starting Page	333
Ending Page	340
Page Count	8
File Format	PDF
ISSN	10859195
Journal	Cell Biochemistry and Biophysics
Volume Number	69
Issue Number	2
e-ISSN	15590283
Language	English
Publisher	Springer US
Publisher Date	2013-12-15
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spinal cord injury Impacting device Model Pathophysiology Biochemistry Pharmacology/Toxicology Biotechnology Cell Biology Biophysics and Biological Physics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Biochemistry Biophysics

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