摘要
目的观察大花罗布麻叶中槲皮素-3-O-槐糖苷和黄酮富集物对MPTP型帕金森症(Parkinson's disease,PD)小鼠模型的多巴胺能(dopaminergic,DA)神经保护作用。方法以C57/bl6小鼠为研究对象,采用MPTP腹腔注射30mg.kg-1连续5d制备PD模型,口服灌胃给予槲皮素-3-O-槐糖苷25mg.kg-1和大花罗布麻叶黄酮富集物250mg.kg-1,造模前7d开始给药。给药结束后进行自主活动和爬杆实验测试动物行为变化,荧光法测定纹状体中多巴胺含量,石蜡切片观察黑质神经细胞病理变化,分析大花罗布麻对多巴胺能神经的保护作用。结果槲皮素-3-O-槐糖苷25mg.kg-1预先给药1wk,能提升MPTP型PD小鼠的运动能力,提高纹状体中多巴胺含量,减轻黑质神经的损伤,增加酪氨酸羟化酶(tyrosine hydroxylase,TH)阳性细胞表达数量。结论槲皮素-3-O-槐糖苷能减轻MPTP对PD小鼠的DA神经损伤。
Aim To study the dopaminergic neuroprotection of quercetin-3-O-sophoroside and total flavonoids derived from Poacynum hendersonni in MPTP-induced mice model of Parkinson＇s disease.Methods To inject MPTP intraperitoneal to C57/bl6 mouse at 30 mg·kg-1·d-1 5 days for PD model preparation,qercetin-3-O-sophoroside（25 mg·kg-1）and total flavonoids（250 mg·kg-1）were treated through intragastric administration 7 days before.Watching the mice behavior change through autonomic activities and pole test after final treatment,dopamine content in striatum was determined with fluorescence photometer.The neurons pathological change in substantia nigra（SN）was observed by pafaffin slice and immunohistochemistry staining to analyze the dopaminergic neuroprotective effects of Poacynum hendersonni.Results Treatment of quercetin-3-O-sophoroside for 7 days in advance,can improve PD mice motivation and dopamine concentration in striatum,tyrosine hydroxylase immune-reactive neurons in SN increased as well.Conclusion Quercetin-3-O-sophoroside can attenuate the impairment of MPTP in mice model of PD.
出处
《中国药理学通报》
CAS
CSCD
北大核心
2010年第3期397-400,共4页
Chinese Pharmacological Bulletin
基金
新疆维吾尔自治区高校科研计划资助项目(NoXJEDU2006S24)
