An experimental study on blocking paw withdrawal reflex by cutting magnetic curve with lumbar spine of rats
10.3760/cma.j.issn.1671-8925.2008.04.010
- VernacularTitle:大鼠腰椎磁力线切割阻断缩足反射的实验研究
- Author:
Zhong CHEN
1
;
An-Min JIN
;
Cheng-Long LIU
;
Bo YU
;
Qi-Jin HUANG
Author Information
1. 南方医科大学珠江医院
- Keywords:
Magnetic curve;
Reflex;
Nerve conduction;
Conduction blocking
- From:
Chinese Journal of Neuromedicine
2008;7(4):361-363
- CountryChina
- Language:Chinese
-
Abstract:
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 1 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. Conclusions When the lumbar spine of a rat cuts magnetic curve passively, the hindlimb withdrawal reflex will be blocked.
