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川芎嗪对MPTP所致小鼠多巴胺能神经元损伤的保护作用及机制
引用本文:朱美娥,舒丹,陈江帆,何金彩.川芎嗪对MPTP所致小鼠多巴胺能神经元损伤的保护作用及机制[J].中风与神经疾病杂志,2009,26(3).
作者姓名:朱美娥  舒丹  陈江帆  何金彩
作者单位:1. 温州医学院附属一院脑科中心,浙江,温州,325000
2. 温州医学院心理学系,浙江,温州,325000
3. 美国波士顿大学医学院神经科分子神经药理实验室,美国,波士顿,200020
摘    要:目的 探讨川芎嗪对MPTP所致小鼠多巴胺能神经元损伤的保护作用及可能机制.方法 C57BL/6J雄性小鼠32只,随机分为4组:生理盐水对照组(NS+NS)、生理盐水组(NS+MPTP)、川芎嗪高剂量组(LT50+MPTP)、川芎嗪低剂量组(LT20+MPTP),每组8只动物.分别采用HPLC法检测纹状体中DA的含量,免疫组化检测黑质中TH阳性细胞数,荧光显色法检测黑质SOD活力、GSH含量.结果 LT50+MPTP组纹状体DA含量、黑质DA神经元数量、黑质SOD活力、黑质GSH含量较NS+MPTP组显著增高(P<0.01).结论 川芎嗪对对MPTP所致的小鼠多巴胺能神经元损伤具有保护作用,其保护机制可能与其调节调节小鼠黑质中的SOD、GSH含量有关.
Abstract:
Objective To investigate the neuroprotective effects and mechanisms of ligustrazine on the MPTP-in-duced dopaminergic neurodegeneration in a mouse model of PD. Methods Male C57BL/6J mice were randomly divided into following four treatment groups ( n = 8/group) : ( 1 ) the saline control group ( NS + NS), mice pretreated with saline followed by saline treatment;(2) the mice pre-treated with saline followed by saline treatment (NS + MPTP) ; (3) the mice pretreated with 50mg/kg of ligustrazine followed by MPTP treatment (LT50 + MPTP) ;(4) the mice pretreated with 20mg/kg of ligustrazine followed by MPTP ( LT20 + MPTP). HPLC,immunohistochemistry and fluorimetry were used. Results The residual DA contents, TH-IR positive cells, SOD activity and GSH content in the mice pretreated with 50mg/kg ligustrazine ( LT50 + MPTP) were significantly higher than those of the saline-pretreatd mice ( NS + MPTP) ( P < 0.01 ).Conclusions Ligustrazine ameliorated MPTP-induced dopaminergic neurodegeneration in mice. The neuroprotective effect of ligustrazine may be associated with their strong antioxidant capacity in vivo.

关 键 词:C57BL/6J雄性小鼠  川芎嗪  抗氧化作用

Neuroprotective effects and mechanisms of ligustrazine against MPTP-induced dopaminergic neurotoxidty in a mouse model of Parkinson' s disease
Abstract:Objective To investigate the neuroprotective effects and mechanisms of ligustrazine on the MPTP-in-duced dopaminergic neurodegeneration in a mouse model of PD. Methods Male C57BL/6J mice were randomly divided into following four treatment groups ( n = 8/group) : ( 1 ) the saline control group ( NS + NS), mice pretreated with saline followed by saline treatment;(2) the mice pre-treated with saline followed by saline treatment (NS + MPTP) ; (3) the mice pretreated with 50mg/kg of ligustrazine followed by MPTP treatment (LT50 + MPTP) ;(4) the mice pretreated with 20mg/kg of ligustrazine followed by MPTP ( LT20 + MPTP). HPLC,immunohistochemistry and fluorimetry were used. Results The residual DA contents, TH-IR positive cells, SOD activity and GSH content in the mice pretreated with 50mg/kg ligustrazine ( LT50 + MPTP) were significantly higher than those of the saline-pretreatd mice ( NS + MPTP) ( P < 0.01 ).Conclusions Ligustrazine ameliorated MPTP-induced dopaminergic neurodegeneration in mice. The neuroprotective effect of ligustrazine may be associated with their strong antioxidant capacity in vivo.
Keywords:PD  MPTP
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