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镁对帕金森病大鼠黑质多巴胺神经元的影响 被引量:7

Effect of magnesium on nigral dopaminergic neurons in rats with Parkinson's disease
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摘要 目的观察镁对帕金森病(PD)大鼠黑质多巴胺神经元影响及其作用机制。方法应用6-羟基多巴胺(6-OHDA)制备偏侧PD大鼠模型后分为硫酸镁组、美多巴组、混合组(硫酸镁+美多巴)和对照组(生理盐水),并给予相应药物灌胃治疗28d。观察治疗后各组大鼠旋转行为的变化;免疫组化法检测黑质酪氨酸羟化酶(TH)阳性神经元数量;生化法测定损毁侧纹状体超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性及丙二醛(MDA)含量;逆转录聚合酶链反应检测损毁侧黑质caspase-3 mRNA表达;Western Blot法检测核因子(NF)-кBP65水平。结果治疗后仅混合组出现较稳定的向对侧的旋转行为;TH阳性神经元数混合组较其他各组明显增加(均P<0.05);与对照组和美多巴组比较,硫酸镁组和混合组SOD、GSH-Px活性显著增高,MDA、caspase-3 mRNA、NF-кBP65水平显著降低(均P<0.05);硫酸镁组与混合组间差异无统计学意义。结论镁及美多巴联合治疗可提高PD模型脑内多巴胺神经元存活、降低氧化应激损伤、减少神经元凋亡,改善PD大鼠症状。 Objective To observe the effect and mechanism of magnesium on nigral dopaminergic neurons in rats with Parkinson s disease(PD). Methods The PD rats were prepared by unilateral injection with 6-hydroxydopamine(6-OHDA) in the nigra and then divided into magnesium sulfate group,Madopar group,mixed group(magnesium sulfate+Madopar) and control (normal saline) group,and recived corresponding therapy by gastric perfusion for 28 d.The behavior change was observed. At the damage side,the number of tyrosine hydroxyla...
作者 杨梅 孙圣刚
出处 《临床神经病学杂志》 CAS 北大核心 2008年第6期437-440,共4页 Journal of Clinical Neurology
关键词 帕金森病 6-羟基多巴胺 美多巴 细胞凋亡 Parkinson s disease 6-hydroxydopamine magnesium Madopar apoptosis
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