《中国康复理论与实践》 ›› 2017, Vol. 23 ›› Issue (6): 621-627.doi: 10.3969/j.issn.1006-9771.2017.06.001

• 专题 脊髓损伤研究 •    下一篇

“三通针法”对脊髓损伤大鼠p75神经营养素受体表达的影响

闵友江, 程立红, 姚海华, 杨柳, 闵志云, 裴佳   

  1. 江西中医药大学附属医院针灸康复分院,江西南昌市 330006。
  • 收稿日期:2016-10-08 修回日期:2016-12-14 出版日期:2017-06-25 发布日期:2017-06-27
  • 通讯作者: 姚海华(1981-),女,江西新干县人,主治中医师,主要研究方向:中医外科疾病的治疗与研究工作。E-mail: 1850396047@qq.com。
  • 作者简介:闵友江(1975-),男,汉族,江西安义县人,副主任中医师、副教授、硕士研究生导师,主要研究方向:神经及运动系统疾病的针灸治疗。
  • 基金资助:
    国家自然科学基金项目(No.81360562)

Effect of Santong Electroacupuncture on Expression of p75 Neurotrophin Receptor in Rats with Spinal Cord Injury

MIN You-jiang, CHENG Li-hong, YAO Hai-hua, YANG Liu, MIN Zhi-yun, PEI Jia   

  1. Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330006, China
  • Received:2016-10-08 Revised:2016-12-14 Published:2017-06-25 Online:2017-06-27
  • Contact: Correspondence to YAO Hai-hua. E-mail: 1850396047@qq.com

摘要: 目的 探讨“三通针法”治疗对大鼠脊髓损伤后p75神经营养素受体(p75NTR) mRNA及蛋白表达的影响。方法 72只Sprague-Dawley雌性大鼠随机分成假手术组(A,n=8)和造模组(n=64)。造模组大鼠采用改良Allen重物打击法制作脊髓损伤大鼠模型,造模成功后存活48只大鼠,随机分为模型组(B,n=12)、电针组(C,n=12)、阻断剂NEP1-40组(D,n=12)、电针+阻断剂NEP1-40组(E,n=12)。电针治疗取大椎、腰阳关及双侧次髎、足三里,选择疏密波,持续时间20 min,每天1次。分别于治疗后7 d、14 d提取损伤处脊髓组织,采用实时荧光定量PCR、原位杂交、Western blotting方法分别检测p75NTR mRNA及蛋白的表达,采用BBB评分评估大鼠后肢活动功能。结果 BBB评分显示,治疗后各组评分均较B组提高,且E组BBB评分分别高于C组和D组(P<0.05),各组14 d评分均高于7 d (t>2.623, P<0.05)。脊髓损伤后,各治疗组与B组比较,脊髓组织中p75NTR mRNA及蛋白的表达均降低(P<0.05);C组、D组和E组之间无显著性差异(P>0.05)。结论 “三通针法”电针能改善脊髓损伤大鼠后肢运动功能,抑制脊髓损伤后p75NTR的表达活动,这可能是电针治疗脊髓损伤的机制之一。

关键词: 脊髓损伤, 电针, 神经再生, p75神经营养素受体, 大鼠

Abstract: Objective To investigate the effect of Santong electroacupuncture (EA) on mRNA and protein expression of p75 neurotrophin receptor (p75NTR) in rats with spinal cord injury (SCI). Methods A total of 72 female Sprague-Dawley rats were randomly assigned to sham operation group (group A, n=8) and model group (n=64). In the model group, Allen's method was used to make SCI rats model, in which 48 survived model rats were further subdivided into model control group (group B, n=12), EA group (group C, n=12), inhibitor Nogo extra cellular peptide residues 1-40 (NEP1-40) group (group D, n=12) and EA+inhibitor NEP1-40 group (group E, n=12) according to design proposal. The treatment groups were electroacupunctured on Dazhui (GV14) and Yaoyangguan (GV3), bilateral Ciliao (BL32) and Zusanli (ST36) with loose-tight wave, for 20 minutes every day. After 7 and 14 days of treatment, injured spinal cord tissue was extracted for detecting. The mRNA and protein expression of p75NTR was detected by real-time fluorescent quantitative PCR, in situ hybridization and Western blotting respectively. The hind limb motor function was assessed with Basso-Beattie-Bresnahan (BBB) score. Results The BBB score increased in the treatment groups compared with group B, and was higher in group E than in groups C and D (P<0.05), as well as on the 14th day than on the 7th day in all the treatment groups (t>2.623, P<0.05). The mRNA and protein expression of p75NTR in spinal cord tissues decreased in the treatment groups compared with group B (P<0.05), and no significant difference was found among the treatment groups (P>0.05). Conclusion Santong elerctroacupuncture treatment could improve the hind limb motor function, which may associate with inhibition of the mRNA and protein expression of p75NTR in rats after SCI.

Key words: spinal cord injury, electroacupuncture, neural regeneration, p75 neurotrophin receptor, rats

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