Effects of Acupuncture on Nerve Blood Flow

为探讨针刺治疗糖尿病神经病变的作用，我们观察了电针对大鼠坐骨神经血流的影响。激光多普勒血流仪测定神经血流量。将大鼠分为三组：1)低频(1 Hz，5 Hz)电针刺激；2)高频(20 Hz，100 Hz)电针刺激；3)尾部夹压刺激。电针组大鼠平面刺激，低频电针刺激组大鼠血流和血压无明显变化，高频电针刺激组和夹压刺激组大鼠血流和血压均有一过性增加。注射α受体阻断剂酚妥拉明后，上述反应均被抑制。这些结果提示高频电针和夹击刺激所引起的坐骨神经血流量增加依赖于血压。

As a preparatory study on the effect of acupuncture treatment of diabetic neuropathy, we investigated the effect of electroacupuncture on the sciatic blood flow in rats. Nerve blood flow was measured with laser doppler flowmetry. The rats were divided into following three groups ;1) rats stimulated with low frequent (1Hz, 5Hz) electroacupuncture.2) rats stimulatedwith highfrequent (20Hz, 100Hz) electroacupuncture.3) rats stimulated in their tails with pinch.In electroacupuncture group, rats were stimulated in their plantae.In the rats stimulated with low frequent electroacupuncture little change was seen, while temporal increase of both blood flow and blood pressure were observed in the rats stimulated with high frequent electroacupuncture and in the rats applied pinch stimulation. Also these reactions were all inhibited by administration of phentolamine (alpha receptor blocker).Those results suggests the increase of sciatic blood flow induced by high frequent electroacupuncture and pinch stimulation are dependent on the blood pressure.