针刺对脑缺血再灌注损伤大鼠HIF-1α/NLRP3炎性信号的影响  

Effect of acupuncture on HIF-1α/NLRP3 inflammatory signaling pathway in the rats with cerebral ischemia-reperfusion injury

作　　者：蔡筝韵 张新昌 刘芙蓉[1,2] 黄正 杨梦凝 黄珮妍 张智慧 倪光夏 CAI Zheng-yun;ZHANG Xin-chang;LIU Fu-rong;HUANG Zheng;YANG Meng-ning;HUANG Pei-yan;ZHANG Zhi-hui;NI Guang-xia(School of Acupuncture-Moxibustion and Tuina/School of Health and Rehabilitation,Nanjing University of Chinese Medicine,Nanjing 210023,Jiangsu Province,China;Key Laboratory of Acupuncture and Medicine Research of Ministry of Education,Nanjing University of Chinese Medicine,Nanjing 210023,Jiangsu Province)

机构地区：[1]南京中医药大学针灸推拿学院·养生康复学院,江苏南京210023 [2]南京中医药大学针药结合教育部重点实验室,江苏南京210023

出　　处：《中国针灸》2023年第9期1056-1061,共6页Chinese Acupuncture & Moxibustion

基　　金：国家自然科学基金资助项目:82074525;江苏省中医药科技发展计划项目:YB2020005;江苏高校护理学优势学科建设工程资助项目:2019YSHL055;江苏省研究生科研创新项目:KYCX21_1695。

摘　　要：目的:观察“醒脑开窍”针法对脑缺血再灌注损伤大鼠缺氧诱导因子1α(HIF-1α)、Nod样受体蛋白3(NLRP3)表达的影响,探讨针刺抗脑缺血再灌注损伤的作用机制。方法:将72只雄性SD大鼠随机分为假手术组、模型组、针刺组及非穴位针刺组,每组18只。采用改良Longa线栓法建立急性局灶性脑缺血大鼠模型,缺血2 h后进行再灌注建立脑缺血再灌注大鼠模型。再灌注后即刻,针刺组采用“醒脑开窍”针法进行干预,穴取双侧“内关”及“水沟”,非穴位针刺组在非穴点行针刺干预,留针30 min。各组大鼠于再灌注后24 h取材。Zea-Longa神经功能缺损评分法对大鼠脑神经功能损伤程度进行评估,TTC染色法观察大鼠脑梗死体积百分比,HE染色法观察大鼠右侧大脑皮层组织形态,Western blot法检测大鼠右侧大脑皮层HIF-1α、NLRP3蛋白表达情况。结果:与假手术组比较,模型组大鼠神经功能缺损评分、脑梗死体积百分比升高(P<0.01),HIF-1α、NLRP3蛋白表达升高(P<0.01)。与模型组比较,针刺组大鼠神经功能缺损评分、脑梗死体积百分比降低(P<0.01),HIF-1α、NLRP3蛋白表达下降(P<0.01);非穴位针刺组大鼠以上指标差异无统计学意义(P>0.05)。针刺组以上指标均优于非穴位针刺组(P<0.01)。与假手术组比较,模型组与非穴位针刺组大鼠脑组织疏松水肿,细胞核皱缩,针刺组大鼠脑组织形态趋近假手术组。结论:针刺干预可减轻脑缺血再灌注损伤,其作用机制可能与调控损伤侧大脑皮层HIF-1α、NLRP3表达从而减轻炎性反应有关。Objective To observe the effects of Xingnao Kaiqiao(regaining consciousness and opening orifices)acupuncture therapy on the expression of hypoxia-inducible factor 1α(HIF-1α)and Nod-like receptor protein 3(NLRP3)in cerebral ischemia-reperfusion rats,and to explore the mechanism of acupuncture against cerebral ischemia-reperfusion injury.Methods Seventy-two male SD rats were randomly divided into a sham-operation group,a model group,an acupuncture group and a non-point acupuncture group,with 18 rats in each one.Using modified Longa thread embolization method,the rat model of acute focal cerebral ischemia was prepared;and after 2 h ischemia,the reperfusion was performed to prepared the model of cerebral ischemia-reperfusion.Immediately after reperfusion,Xingnao Kaiqiao acupuncture method was applied to bilateral"Neiguan"(PC 6)and"Shuigou"(GV 26)in the acupuncture group,while in the non-point acupuncture group,acupuncture was delivered at non-points and all of the needles were retained for 30 min in these two groups.The samples were collected 24 h after reperfusion in the rats of each group.Zea-Longa neurological deficit score was used to evaluate the degree of cerebral neurological impairment,TTC staining was adopted to observe the volume percentage of cerebral infarction,HE staining was provided to observe the morphological changes of brain,and Western blot was applied for detecting the expression of HIF-1αand NLRP3 proteins in the cerebral cortex on the right side.Results Compared with the sham-operation group,neurological deficit score and volume percentage of cerebral infarction were increased in the model group(P<0.01),and HIF-1αand NLRP3 protein expression was elevated(P<0.01).Compared with the model group,neurological deficit score and volume percentage of cerebral infarction were decreased(P<0.01),and HIF-1αand NLRP3 protein expression was lower(P<0.01)in the acupuncture group.There was no significant difference in above indexes in the nonpoint acupuncture group compared with the model group(P>0.05).Com

关 键 词：脑缺血再灌注损伤 针刺 炎性反应 HIF-1Α NLRP3 

分 类 号：R245.3[医药卫生—针灸推拿学]