电针对帕金森病大鼠行为学及多巴胺能神经元的影响

目的：探究电针防止帕金森病大鼠黑质多巴胺能神经元损伤的可能性。方法：将Wistar大鼠随机分为正常组、模型组、假手术组及电针组,将6-OHDA注入中脑右侧黑质造成单侧黑质损毁的帕金森病大鼠模型,采用TH／TUNEL法、旋转行为观察的方法,观察模型成功后电针“太冲”“风府”治疗3d、7d、14d大鼠旋转行为及黑质多巴胺能神经元凋亡变化。结果：每分钟旋转次数模型组3d、7d、14d基本相同,电针组14d时明显减少（P〈0．05）;旋转启动时间在7d、14d时模型组显著长于电针组（P〈0．05）;旋转持续时间,模型组、电针组在3d、7d、14d时持续时间逐渐缩短（P〈O．01或P〈0．05）,但7d、14d时,模型组持续时间显著长于电针组（P〈0．05）。模型组DA神经元凋亡数明显高于正常组,具有非常显著性意义（P〈0．01）,电针组凋亡数呈减少趋势,7d、14d时细胞凋亡数显著低于模型组（P〈0．05）。结论：电针能有效防止帕金森病大鼠黑质多巴胺能神经元损伤。

Effects of electroacupuncture on behaviors and dopaminergic neurons in the rat of Parkinson's disease

OBJECTIVE: To explore the possibility of electroacupuncture (EA) for prevention of the injury of dopaminergic neurons in the substantia nigra of the rat with Parkinson's disease. METHODS: Wistar rats were randomly divided into a normal group, a model group, a sham-operation group and an EA group. 6-OH-DA was injected into right substantia nigra of the midbrain to made Parkinson's disease rat model with single side substantia nigra injury, and TH/TUNEL method and rotation behavior observation method were used to observe changes of rotation behavior and apoptosis of dopaminergic neurons in the substantia nigra after EA at "Taichong" (LR 3) and "Fengfu" (GV 16) for 3 d, 7 d and 14 d. RESULTS: The rotation times/min were same at 3 d, 7 d and 14 d were the basically same in the model group, and at 14 d significantly decreased in the EA group (P<0.05); the rotation starting time at 7 d and 14 d in the model group were significantly longer than those in the EA group (P<0.05); the rotation lasting time at 3 d, 7 d and 14 d in the model group and the EA group were gradually shortened (P<0.01, or P<0.05), but at 7 d, 14 d in the model group were significantly longer than those in the EA group (P<0.05); the DA neuron apoptosis number in the model group were significantly higher than those in the normal group, with a very significant difference (P<0.01); the apoptosis number in the EA group tended to decrease, at 7 d and 14 d were significantly lower than that in the model group (P<0.05). CONCLUSION: Electroacupuncture can effectively prevent from injury of dopaminergic neurons in the substantia nigra of the rat with Parkinson's disease.