摘要
健康雄性大鼠54只,随机分为不同激光功率的4个组和捆绑、空白对照组。大鼠捆绑于鼠台,每天用激光照射右“足三里”10min,第6天实验后,取空、回肠系膜铺片,醛品红—橙黄G染色,10×40倍光镜作镜检。结果发现,除40mW激光组出现抑制效应外,激光照射使肥大细胞数量升高,接近正常水平,肥大细胞脱颗粒率增加。此种变化尤以5mW和20mW激光作用最佳。激光照射“足三里”的作用,空肠优于回肠。
54 male healthy rats were allocated randomly to 6 groups, i.e., the 5mW、20mW、30mW and 40mW laser irradiation groups, the trussing up control group and the normal control group. During the experiment, all rats were bound on the table except the normal control group. Laser irradiations were given to Zusanli point for ten minutes per day, but not for the controls. On the sixth day all rats were killed uuder anaesthesia with ether. Pieces of jejunal and ileal mesentery were cut off and spread on a sheet of glass, fixed and dyed. The mast cells in the transparent fenestra of mesentery were observed under light microscope. The results showed that the numbers and the degranulation rates of mast cell were increased in 5mW, 20mW and 30mW laser irradiation groups, the change in the jejunal mesentery being more prominent than that in the ileum. But an inhibition effect was found in the 40mW laser irradiation group. It is considered that 5mW and 20mW are the optimal powers for laser irradiation in acupuncture.
