基于CaMkkβ/AMPK通路介导线粒体自噬探讨敛肝熄风止颤方的神经保护机制
2021-06-30王春玲罗宁蒋媛静蒙冰左曜玮李昌海文晓东
王春玲 罗宁 蒋媛静 蒙冰 左曜玮 李昌海 文晓东



摘要 目的:觀察敛肝熄风止颤方对帕金森病(Parkinson Disease,PD)的影响,探讨其神经保护机制。方法:将60只SD大鼠分为假手术组10只,造模组50只,造模组大鼠接受PD模型制备,将成模的40只大鼠随机分为模型组10只、低剂量组(0.36 g/kg)10只、中剂量组(0.72 g/kg)及高剂量组(1.44 g/kg)10只,持续灌胃给药30 d,比较各组大鼠阿扑吗啡诱导旋转次数、圆筒实验,纹状体超微结构以及CaMkkβ、AMPK、p-AMPK水平的变化。结果:1)敛肝熄风止颤方可明显减少大鼠转圈以及肢体碰壁的次数,随着剂量增加次数减少更明显,差异有统计学意义(P<0.05)。2)造模大鼠纹状体线粒体自噬现象减弱,敛肝熄风止颤方可明显促进脑组织线粒体自噬。3)中药干预后大鼠纹状体CaMkkβ、p-AMPK蛋白表达上调,与模型组比较,差异有统计学意义(P<0.05),其中高剂量组较低剂量组上调明显,差异有统计学意义(P<0.05)。结论:敛肝熄风止颤方对帕金森病具有神经保护作用,其机制之一可能是通过激活CaMkk/AMPK通路活性促进线粒体自噬有关。
关键词 帕金森病;敛肝熄风止颤方;机制;线粒体;自噬;神经保护;CaMkkβ/AMPK通路
Study on the Neuroprotective Mechanism of Lianggan Xifeng Zhichan Formula Based
on Mitochondrial Autophagy Mediated by CaMkkβ/AMPK Pathway
WANG Chunling1,LUO Ning2,JIANG Yuanjing2,MENG Bing2,ZUO Yaowei1,LI Changhai1,WEN Xiaodong2
(1 College of Pharmacy,Guangxi University of Traditional Chinese Medicine,Nanning 530001,China; 2 Department of
Neurology,Ruikang Hospital Affiliated to Guangxi University of Traditional Chinese Medicine,Nanning 530011,China)
Abstract Objective:To observe the effect of Lianggan Xifeng Zhichan Formula (LGXFZC) on Parkinson′s disease (Parkinson′s disease,PD) and explore its neuroprotective mechanism.Methods:A total of 60 SD rats were divided into a sham operation group (n=10) and a model group (n=50).The rats in the model group were made by PD model.40 rats were randomly divided into a model group (n=10),a low dose group (0.36 g/kg) (n=10),a middle dose group (0.72 g/kg) and a high dose group (1.44 g/kg) for 30 days.The rotation times of apomorphine,cylinder test,ultrastructure of striatum and the levels of CaMkk β,AMPK and p-AMPK were compared in each group.Results:1) LGXFZC could significantly reduce the frequency of rotation and limb touching wall in rats.As the dose increases,the frequency decreases more obviously.The difference was statistically significant (P<0.05).2) the phenomenon of mitochondrial autophagy in striatum of model rats was weakened,and LGXFZC could obviously promote mitochondrial autophagy in brain tissue.3) after the intervention of Chinese medicine,the expression of CaMkk β and p-AMPK protein in the striatum of rats was significantly higher than that in the model group (P<0.05),and compared with the model group,the difference is statistically significant (P<0.05).Among them,the high-dose group and the lower-dose group were up-regulated significantly (P<0.05).Conclusion:LGXFZC has neuroprotective effect,and one of its mechanisms may be that it promotes mitochondrial autophagy by activating the activity of CaMkk/AMPK pathway.
Keywords Parkinson′s disease; Linggan Xifeng Zhichan Formula; Mechanism; Mitochondria; Autophagy; Neuroprotection; CaMkk β/AMPK pathway
中图分类号:R289.5;R741文献标识码:Adoi:10.3969/j.issn.1673-7202.2021.05.015
帕金森病(Parkinson Disease,PD)是临床常见的神经退行性疾病,以黑质-纹状体多巴胺能神经元进行性丢失为主要病理学改变[1],严重影响患者的日常工作和生命质量。因此,寻找安全有效的治疗PD手段,是神经医学及康复医学迫切需要解决的课题。线粒体自噬是清除/降解受损线粒体的过程,是有效阻断受损线粒体导致细胞死亡的关键[2-3]。另一方面,线粒体自噬过程中产生脂肪酸、氨基酸等小分子物质将重新参与机体组织细胞的物质代谢,有研究显示帕金森病的发生发展与线粒体自噬减弱关系密切,调控线粒体自噬对治疗PD多巴胺能神经元损伤有重要的意义[4-5]。
敛肝熄风止颤方首载于《伤寒论·厥阴病》,有敛肝熄风、养血濡筋的作用,临床显示将该方用于治疗PD,确具有一定的疗效[6],但其机制仍需进一步研究。……
