减轻氯胺酮诱导的大鼠小脑皮质神经元损伤——通过低频电针调节 CAMK II/CREB通路

刘 敏1, 龚 儒杰2
1、皖南医学院人体解剖学教研室
2、皖南医学院第一附属医院超声医学科

摘要


目的:观察氯胺酮滥用对大鼠小脑皮质神经元的损害,以及钙离子依赖性蛋白激酶II(CAMK II)和cAMP
反应元件结合蛋白(CREB)的表达。确定电针是否通过改变CAMKII/CREB通路来拮抗氯胺酮诱导的小脑皮质神
经元损伤。方法:18只SD雄性大鼠被随机分配为三组:正常组、氯胺酮组和电针组,每组有6只大鼠。腹腔注射盐
酸氯胺酮(50mg/kg),每天一次,连续7天,以建立氯胺酮滥用模型。电针组的大鼠在接受氯胺酮后,在“三阴交”
和“足三里”穴位接受电针,每天一次,持续7天。用Nissl染色来鉴定小脑皮质中神经元的损伤,用免疫组织化学
来鉴定小脑皮质中CAMKII和CREB蛋白的表达。结果:氯胺酮组小脑皮质中Nissl阳性神经元的数量明显低于正常
组,但电针组Nissl阳性神经元数量明显高于氯胺酮组。免疫组化结果显示,氯胺酮组小脑皮质中CAMKII和CREB
蛋白表达高于正常组。电针组CAMK II和CREB蛋白的水平比氯胺酮组低。结论:氯胺酮的滥用可导致大鼠小脑皮
质神经元的破坏。通过改变CAMKII/CREB途径,电针可以减轻氯胺酮在大鼠小脑皮质中造成的神经元损伤。

关键词


氯胺酮;低频电针;小脑皮质;CAMK II;CREB

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