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흰쥐 좌골신경에 신경파괴제 주입 후 초래되는 하지 운동과 신경조직학적 변화

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Author(s)
전재규송선옥정성원
Keimyung Author(s)
Cheun, Jae Kyu
Department
Dept. of Anesthesiology & Pain Medicine (마취통증의학)
Journal Title
대한통증학회지
Issued Date
2001
Volume
14
Issue
1
Keyword
FunctionalHistopathological changeNeurolyticsRecoverySciatic nerve
Abstract
Background: This study was undertaken to observe the functional changes of the hind limb and histopathological changes in the sciatic nerve after an injection of alcohol or phenol, which are commonly used neurolytic agents, highlighting the time of recovery. Methods: Forty-eight Sprague-Dawley rats weighing 200-300 g were used for the experiment. Histopathological changes under the electron microscope, were observed in the distal part of the sciatic nerve, into which 0.1 ml of alcohol or phenol was injected. This was severed in 3 rats of each group at 10 minutes, 1 hour, 24 hours, 3 days, 1, 2, 4 and 6 weeks later. The functional changes in the hind limbs were observed for 6 weeks by noting their walking pattern. Results: Following the injection of alcohol or phenol into the right sciatic nerve, the right hind limb showed a severe pronounced motor weakness and obvious gait changes. About 2 weeks later, gradual improvement of gait changes began, and after 6 weeks, the motor weakness and gait changes were no longer perceptible in both groups. The findings of any histopathological change were similar in both alcohol or phenol groups. At 10 minutes after injection, destructive lesions were confined to the unmyelinated fibers and the myelin sheath of small the myelinated fibers. On the 3rd day and at 1 week, pathologic changes in axonal fibers and Schwann cells were in being phagocytized in spite of myelin restitution. From 2 to 4 weeks, axonal regeneration and remyelination appeared at the same time a myelin disintegration and axonolysis. At 6 weeks, neural regeneration was similar to that of the contralateral control group. Conclusions: These results suggest that functional and histopathological changes, after injection of neurolytics into the peripheral nerves, are quite similar in both alcohol and phenol groups. The progression of functional and histopathological changes become more obvious according to the time interval following the injection. Consequently, side effects that develop following the use of alcohol or phenol may begin to improve around the time that nerve regeneration occurs, i.e., two to four weeks later.
Alternative Title
Functional and Histopathological Changes Following Injection of Neurolytic Agents on Rat's Sciatic Nerve
Keimyung Author(s)(Kor)
전재규
Publisher
School of Medicine
Citation
전재규 et al. (2001). 흰쥐 좌골신경에 신경파괴제 주입 후 초래되는 하지 운동과 신경조직학적 변화. 대한통증학회지, 14(1), 83–92.
Type
Article
ISSN
1226-2579
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/39765
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Anesthesiology & Pain Medicine (마취통증의학)
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