中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (18): 2634-2641.doi: 10.3969/j.issn.2095-4344.2016.18.008

• 周围神经损伤动物模型 Animal models of peripheral nerve injury • 上一篇    下一篇

眼针干预脑缺血再灌注模型大鼠神经功能及相关神经营养因子的表达

刘慧影1,王鹏琴2,边 颖1,王金春1,魏颖鸿1   

  1. 1沈阳市第五人民医院神经内一科,辽宁省沈阳市  110023;2辽宁中医药大学附属第一医院康复科,辽宁省沈阳市  110032
  • 收稿日期:2016-03-16 出版日期:2016-04-29 发布日期:2016-04-29
  • 通讯作者: 王鹏琴,博士,主任医师,辽宁中医药大学附属第一医院康复科,辽宁省沈阳市 110032
  • 作者简介:刘慧影,女,1982年生,辽宁省沈阳市人,汉族,辽宁中医药大学在读硕士,主治医师,主要从事脑血管病诊疗方法的研究。
  • 基金资助:

    辽宁彭氏眼针学术流派传承工作室建设项目(Lpgzs2012-09)

Effects of eye acupuncture therapy on neurological function and brain-derived neurotrophic factor expression in a rat model of cerebral ischemia/reperfusion injury

Liu Hui-ying1, Wang Peng-qin2, Bian Ying1, Wang Jin-chun1, Wei Ying-hong1   

  1. 1First Department of Neurology, Shenyang Fifth People’s Hospital, Shenyang 110023, Liaoning Province, China; 2Department of Rehabilitation, First Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang 110032, Liaoning Province, China
  • Received:2016-03-16 Online:2016-04-29 Published:2016-04-29
  • Contact: Wang Peng-qin, M.D., Chief physician, Department of Rehabilitation, First Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang 110032, Liaoning Province, China
  • About author:Liu Hui-ying, Studying for master’s degree, Attending physician, First Department of Neurology, Shenyang Fifth People’s Hospital, Shenyang 110023, Liaoning Province, China
  • Supported by:

    a grant from Liaoning Peng’s Eye Acupuncture Therapy Academic Inheritance Studio Construction Project, No. Lpgzs2012-09

摘要:

文章快速阅读:

 

文题释义:
神经生长因子:是神经营养因子中最早被发现,目前研究最为透彻的,具有神经元营养和促突起生长双重生物学功能的一种神经细胞生长调节因子,它对中枢及周围神经元的发育、分化、生长、再生和功能特性的表达均具有重要的调控作用。神经生长因子包含α,β,γ共3个亚单位,活性区是β亚单位,由2个118个氨基酸组成的单链通过非共价键结合而成的二聚体,与人体神经生长因子的结构具有高度的同源性,生物效应也无明显的种间特异性。
脑源性神经营养因子:是体内含量最多的神经营养因子,它通过与酪氨酸激酶B的结合而发挥作用。酪氨酸激酶B的胞内区域具有内在的酪氨酸激酶活性,脑源性神经营养因子与酪氨酸激酶B结合后激活胞内区域,引起酪氨酸激酶B自身磷酸化作用增强,进而激活Ras-MAPK通路,最后在CAMP反应元件结合蛋白(CREB)的丝氨酸位点激活CREB。CREB通过增加脑源性神经营养因子基因及抗凋亡蛋白基因bcl-2的表达,来促进神经细胞生存,增加突触可塑性及神经发生。
 
背景:眼针疗法主要是针刺眼球周围、眼眶边缘的穴位,调整气血运行、疏经通络和调和阴阳,现已在临床广泛运用,对缺血性脑血管病等多种疾病疗效显著,但是具体作用机制尚不明确。神经营养因子是一类调控神经元存活、发展和发挥作用的蛋白家族,包括神经营养因子和脑源性神经营养因子等。
目的:观察眼针对脑缺血再灌注模型大鼠脑组织神经生长因子、脑源性神经营养因子表达的影响。
方法:54只雄性SD大鼠随机分为3组:假手术组、模型组和眼针组,每组18只。后2组采用线栓法制备大脑中动脉闭塞模型,眼针组于缺血2 h后进行眼针干预,于大鼠眶周2 mm处取穴肝区、上焦区、下焦区和肾区。治疗第3,7,14天进行神经功能评分。治疗第1,2周,免疫组织化学染色检测神经生长因子、脑源性神经营养因子阳性表达,治疗第2周采用TTC染色法检测脑梗死体积。
结果与结论:①眼针组治疗后第1,2周神经生长因子、脑源性神经营养因子阳性表达细胞明显高于模型组(P < 0.05),与治疗后第1周相比,第2周数量下降。②治疗后第7,14天眼针组神经功能评分明显降低,与模型组比较差异有显著性意义(P < 0.05),但仍高于假手术组 (P < 0.05);③治疗后第2周,眼针组和模型组大鼠脑梗死体积均明显大于假手术组(P < 0.01),但眼针组脑梗死体积明显小于模型组(P < 0.05);④结果证实,眼针干预可能是通过增强脑缺血后神经生长因子和脑源性神经营养因子的表达,从而改善神经功能,缩小脑梗死体积,对缺血性脑损伤具有一定的保护作用。
中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程
ORCID: 0000-0003-3166-3344(刘慧影)

关键词: 实验动物, 神经损伤与修复动物模型, 眼针, 大脑中动脉闭塞, 脑梗死, 神经生长因子, 脑源性神经营养因子, 神经功能, 梗死体积, 神经营养因子, 大鼠

Abstract:

BACKGROUND: Eye acupuncture therapy is a technique used to adjust qi-blood circulation, relax muscles and tendons, and activate collaterals by acupuncture at the acupoints around the eye balls and in the orbital border. This therapy has been widely used in the clinic because it exhibits remarkable therapeutic effects on many ischemic cerebrovascular diseases. However, the precise mechanism behind this therapy remains poorly understood. Neurotrophic factors are a protein family including neurotrophic factors and brain-derived neurotrophic factors that can regulate neuronal survival, development and functioning.

OBJECTIVE: To investigate the effects of eye acupuncture therapy on neurological function and nerve growth factor and brain-derived neurotrophic factor expression in the brain tissue of rat models of cerebral ischemia/reperfusion injury.
METHODS: Fifty-four male Sprague-Dawley rats were randomly divided into three groups with 18 rats per group: sham-operated, model and eye acupuncture therapy groups. Rat models of middle cerebral artery occlusion were established by the intraluminal suture method in the model and eye acupuncture therapy groups. Eye acupuncture was performed at the following acupoints liver area, upper-jiao area, lower-jiao area and kidney area located at the internal orbital margin at 2 hours after cerebral ischemia/reperfusion injury. Rat neurological function was evaluated at 3, 7, and 14 days after injury. Nerve growth factor and brain-derived neurotrophic factor expression in the rat brain tissue was detected using immunohistochemical staining method at 1 and 2 weeks after treatment. Cerebral infarct size was determined using TTC staining at 2 weeks after treatment.
RESULTS AND CONCLUSION: (1) At 1 and 2 weeks after injury, nerve growth factor and brain-derived neurotrophic factor expression was significantly greater in the eye acupuncture therapy group than in the model group (P < 0.05), but nerve growth factor and brain-derived neurotrophic factor expression in the eye acupuncture therapy group was decreased at 2 weeks after injury compared to that at 1 week after injury. (2) At 7 and 14 days after treatment, neurological function scores in the eye acupuncture therapy group were significantly lowered, and there was significant difference between eye acupuncture therapy and model groups (P < 0.05), but they were significantly higher than those in the sham-operated group (P < 0.05). (3) At 2 weeks after treatment, cerebral infarct size was significantly greater in the eye acupuncture therapy and model groups than in the sham-operated group (P < 0.01), and it was significantly smaller in the eye acupuncture therapy group than in the model group (P < 0.05). (4)These results indicate that eye acupuncture therapy shows neuroprotective effects on ischemic cerebral injury by increasing nerve growth factor and brain-derived neurotrophic factor expression, improving neurological function, and reducing cerebral infarct size.
中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程

Key words: Infarction, Middle Cerebral Artery, Nerve Growth Factor, Brain-Derived Neurotrophic Factor, Acupuncture Points, Eye, Tissue Engineering