外周神经损伤引起病理性疼痛的机制

被引:60
作者
刘先国
机构
[1] 中山大学疼痛研究中心中山医学院生理学教研室
关键词
神经病理性疼痛; 异位冲动; 背根神经节; 长时程增强; 脊髓背角; TNF-α; Nav1.3; Nav1.8; 运动神经损伤;
D O I
暂无
中图分类号
R651.1 [颅脑];
学科分类号
100223 [神经外科学];
摘要
外周神经损伤往往导致慢性疼痛,即神经病理性疼痛。大量的研究表明,神经损伤主要通过使初级感觉神经元产生自发放电(即异位冲动)和脊髓背角突触传递效率的持续性增强(即LTP)导致病理性疼痛。近年来的研究表明,致炎细胞因子TNF-α在神经病理性疼痛中起重要作用。神经损伤可通过上调TNF-α,导致初级感觉神经元上Nav1.3和Nav1.8过表达,引起异位冲动。TNF-α的上调还可显著易化脊髓背角C纤维诱发电位的LTP。由于TNF-α的上调,Nav1.3和Nav1.8过表达和脊髓背角LTP的形成主要与运动神经损伤相关,因此运动神经损伤可能是引起病理性疼痛的主要原因。
引用
收藏
页码:641 / 644+651 +651
页数:5
相关论文
共 5 条
[1]
The role of tumor necrosis factor-alpha in the neuropathic pain induced by Lumbar 5 ventral root transection in rat [J].
Xu, Ji-Tian ;
Xin, Wen-Jun ;
Zang, Ying ;
Wu, Chang-You ;
Liu, Xian-Guo .
PAIN, 2006, 123 (03) :306-321
[2]
Effect of lumbar 5 ventral root transection on pain behaviors: A novel rat model for neuropathic pain without axotomy of primary sensory neurons [J].
Li, L ;
Xian, CJ ;
Zhong, JH ;
Zhou, XF .
EXPERIMENTAL NEUROLOGY, 2002, 175 (01) :23-34
[3]
Inhibition of neuropathic pain by decreased expression of the tetrodotoxin-resistant sodium channel; NaV1.8.[J].Josephine Lai;Michael S Gold;Chang-Sook Kim;Di Bian a;Michael H Ossipov;John C Hunter c;Frank Porreca.Pain.2002, 1
[4]
Mechanical hyperalgesia after an L5 spinal nerve lesion in the rat is not dependent on input from injured nerve fibers [J].
Li, YB ;
Dorsi, MJ ;
Meyer, RA ;
Belzberg, AJ .
PAIN, 2000, 85 (03) :493-502
[5]
Long-term potentiation of C-fiber-evoked potentials in the rat spinal dorsal horn is prevented by spinal N -methyl- d -aspartic acid receptor blockage.[J].X.-G. Liu;J. Sandkühler.Neuroscience Letters.1995, 1