摘要
目的观察磁力线切割对神经传导的阻断作用。方法雄性SD大鼠24只，用掷硬币随机法分为试验组和对照组各12只。试验组大鼠麻醉后，悬在镶嵌有恒磁体的铝盘上，使铝盘旋转，试验组大鼠的腰骶部以60m／s的线速度被动切割磁力线。对照组做相同处置只是磁体无磁性。用100g力夹持大鼠的右足1s，观察大鼠的缩足反射。结果磁力线切割中，试验组大鼠11只缩足反射消失，而对照组全部存在，两组比较差异有统计学意义（P〈0．05）。磁力线切割停止后试验组有10只大鼠即刻恢复缩足反射，其余也在5min内恢复，对照组全部有缩足反射．两组比较差异无统计学意义（P〉0．05）。结论当大鼠腰椎以60m／s的线速度被动切割磁力线时，大鼠后足的缩足反射被阻断。
Objective To observe nerve conduction blocking effects of magnetic curve cutting. Methods Twenty-four male SD rats were randomly assigned to 2 groups： experiment group and control group. In the former, rats were anesthetized and hung over a alum plate in which 20 pieces of magnet were embedded. The alum plate was rotated so as to the lumbar spine of the rat could cut magnetic curve passively at a speed of 60 m/s. The control group received the same treatment except that the magnets had no magnetism. The right paw of rat was clamped with a 100 g force for l s, and the withdrawal reflex was observed. Results During magnetic curves cutting, the paw withdrawal reflex disappeared in 91.67% rats of experimental group, whereas it existed in all rats of control group. The difference was statistically significan （P〈0.05）. Withdrawal reflex was recovered in 83.33% of rats in experimental group as soon as the cutting stopped, and the control group still remained the reflex; there was no significant difference between the 2 groups （P〉0.05）. The rats whose reflex failed to recover at first in experimental group, rcovered 5 minutes later. Conelusions When the lumbar spine of a rat cuts magnetic curve passively, the hindlimb withdrawal reflex will be blocked.
出处
《中华神经医学杂志》
CAS
CSCD
2008年第4期361-363,共3页
Chinese Journal of Neuromedicine
关键词
磁力线
反射
神经传导
传导阻断
Magnetic curve
Reflex
Nerve conduction
Conduction blocking
