低能量氦-氖激光对脊髓运动神经细胞的影响  

INFLUENCE OF LOW ENERGY HE NE LASER ON SPINAL MOTOR NERVE CELL/

作　　者：石凯军[1,2] 吕荣[1,2] 徐新智[1,2] 刘健[1,2] 

机构地区：[1]第四军医大学西京医院全军骨科研究所 [2]第四军医大学电镜室

出　　处：《中国修复重建外科杂志》1997年第1期10-13,共4页Chinese Journal of Reparative and Reconstructive Surgery

摘　　要：旨在探索低能量氦－氖激光对脊髓运动神经细胞的影响。用４只家兔经皮肤照射Ｌ５，６脊髓节段后，测腓总神经潜速率，了解周围神经完整时脊髓运动神经细胞的功能；切断家兔一侧腓总神经而不修复，照射Ｌ５，６脊髓节段，２周后取Ｌ５，６脊髓段灰质作电镜检查；切断家兔一侧腓总神经，对端吻合后，照射Ｌ５，６脊髓节段，２周后观察腓总神经潜速率及展趾反射。结果表明：周围神经完整时，激光照射Ｌ５，６脊髓节段后，可引起腓总神经潜速率变化，波幅有明显降低。切断腓总神经侧的运动神经细胞超微结构以每日照射１０及１５ｍｉｎ者的变化较轻微。腓总神经完整侧也有一定变化。吻合腓总神经侧的展趾反射，以每日照射１５ｍｉｎ者恢复较快。认为，低能量氦－氖激光照射Ｌ５，６脊髓节段后，可引起脊髓运动神经细胞的功能变化，促进神经修复后肢体功能的恢复。The object of this experimental study was to investigate the influence of low energy He Ne laser on the motor nerve cells of the spinal cord. The experimental study included as follws: (1) Four rabbits were used in this experiment. The L 5～6 spinal cord segment was irradiated by He Ne laser percutaneously, the nerve velocity of the comon peroneal nerve was measured in order to determine the function of the spinal motor nerve cells when the peripheral nerve was intact. (2) The common peroneal nerve was transected on one side wothout repair, two weeks after laser irradiation, the grey mater of the spinal cord of L 5～6 segment was procured for electronic microscopic examination. (3) The common peroneal nerve on the contralateral side was transected and followed by end to end anastomosis, and laser irradiation was done on the same spinal cord segment. Two weeks after irradiation, the nerve velocity of the common peroneal nerve and the toe expanding test were investigated. The results were: (1) the He Ne laser can influence the spinal motor nerve cells function as expressed by latent rate when the peripherial nerve is intact. i.e. the nerve velocity is slower than mormal, and the amplitude is markedly decreared. (2) the change of the microstructure of the spinal motor nerve cells is comparatively slight in the 10 and 15 minutes groups. (3) the recovery of the nerve velocity and the toe expansion are more earlier in the 15 min. group. In short, the low energg He Ne laser can influence the function of the spinal motor nerve cells.

关 键 词：激光疗法 脊髓 运动神经细胞 

分 类 号：R454.2[医药卫生—治疗学]