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흰쥐의 neuronal NOS 신경세포의 activity에 대한 전침자극 효과
김후동,남상수,김창환 대한침구의학회 2006 대한침구의학회지 Vol.23 No.5
Objectives : The aim of this study was to investigate the effect of various electroacupuncture stimulation on neuronal nitric oxide synthase(nNOS) in cerebral cortex, brain stem, cerebellum of spontaneously hypertensive rats. Methods : We evaluated the changes of nNOS-positive neurons using a immunohistochemical method. The staining intensity of nNOS positive neurons was assessed in a quantitative fashion using a microdensitometrical method based on optical density by means of an image analyzer. Results : The average optical density of nNOS-positive neurons of 100 Hz (bipolar square wave 0.2 ms duration and 100 Hz frequency) electroacupuncture treatment group significantly decreased in most cortical areas comparison between the manual acupuncture and 2 Hz (bipolar square wave 0.2 ms duration and 2 Hz frequency) electroacupuncture groups. In the brain stem, the optical density of nNOS-positive neuron at superficial gray layer of the superior colliculus area, dorsolateral periaqueductal gray area and paralemniscal nucleus were same as cerebral cortex. Conclusion : We conclude that the morphological evidence for nNOS-positive neurons may be have regional change in cerebral cortex brain stem and cerebellum according to various electroacupuncture stimulations. **경희대학교 강남경희한방병원 침구과