Molecular Mechanism of Electroacupuncture Regulating Cerebral Arterial Contractile Protein in Rats with Cerebral Infarction Based on MLCK Pathway  

作　　者：LI Jing ZHANG Min HE Ying DU Yuan-hao ZHANG Xue-zhu Rainer Georgi Bernhard Kolberg Xu Yan-long 

机构地区：[1]Institute of Acupuncture and Moxibustion,First Teaching Hospital of Tianjin University of Traditional Chinese Medicine,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion,Tianjin,300193,China [2]Max Planck Institute for Medical Research,Heidelberg,69120,Germany [3]Uniklinik Mannheim,Mannheim,68167,Germany [4]Department of Acupuncture and Moxibustion,Gansu Provincial Hospital of Traditional Chinese Medicine,Lanzhou,730050,China

出　　处：《Chinese Journal of Integrative Medicine》2023年第1期61-68,共8页中国结合医学杂志（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos.81674056 and 82074543);the Tianjin Municipal Natural Science Foundation(No.18JCYBJC94200),China。

摘　　要：Objective To explore the effect of electroacupuncture(EA)intervention on the vasoconstriction of cerebral artery smooth muscle cells after cerebral infarction.Methods Male Wistar rats were randomly divided into 3 groups by a random number table:the model group(n=24),the EA group(n=24),and the normal group(n=6).The model and the EA groups were divided into different time subgroups at 0.5,1,3,and 6 h after middle cerebral artery occlusion(MCAO),with 6 rats in each subgroup.MCAO model was established using intraluminal suture occlusion method.The EA group was given EA treatment at acupoint Shuigou(GV 26)instantly after MCAO for 20 min.The contents of cerebrovascular smooth muscle MLCK,the 3 subunits of myosin light chain phosphatase(MLCP)MYPT1,PP1c-δand M20,as well as myosin-ATPase activity were detected using immunohistochemistry and Western blotting.Results The overall expression level of the MYPT1 and PP1c-δin the model group was significantly higher(P<0.01).After EA intervention,the 0.5 h group expression level was close to that of the normal group(P>0.05),and the other subgroups were still significantly higher than the normal group(P<0.01).After EA intervention,the expression level of each subgroup was significantly lower than the corresponding model group.There was a significant difference between the 0.5 and 1 h subgroups(P<0.01),while a difference was also observed between the 3 and 6 h subgroups(P<0.05).The dynamic change rule gradually increased with the prolongation of infarction time within 6 h after infarction.Conclusion EA intervention can inhibit contraction of cerebral vascular smooth muscle cells and regulate smooth muscle relaxation by regulating MLCK pathway.

关 键 词：infarction VASOMOTOR MLCK pathway Shuigou(GV 26) ELECTROACUPUNCTURE 

分 类 号：R245.97[医药卫生—针灸推拿学]