中山大学附属第一医院针灸科,广东 广州 510080
孟凡琪,硕士生,E-mail:mengfq6@mail2.sysu.edu.cn
收稿:2021-09-16,
纸质出版:2021-11-20
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孟凡琪,裴文娅,焦博钰等.电针联合神经导管移植对长缺损正中神经再生和功能恢复的影响[J].中山大学学报(医学科学版),2021,42(06):846-853.
MENG Fan-qi,PEI Wen-ya,JIAO Bo-yu,et al.Effect of Electroacupuncture Combined with Nerve Conduit Transplantation on Regeneration and Function Recovery of Long-Defect Median Nerve[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(06):846-853.
孟凡琪,裴文娅,焦博钰等.电针联合神经导管移植对长缺损正中神经再生和功能恢复的影响[J].中山大学学报(医学科学版),2021,42(06):846-853. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2021.0613.
MENG Fan-qi,PEI Wen-ya,JIAO Bo-yu,et al.Effect of Electroacupuncture Combined with Nerve Conduit Transplantation on Regeneration and Function Recovery of Long-Defect Median Nerve[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(06):846-853. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2021.0613.
目的
2
探讨电针联合神经导管移植修复大鼠正中神经长节段缺损的疗效。
方法
2
选取成年SD大鼠18只,随机分成对照组、导管组、电针联合导管组,每组6只。建立大鼠左侧正中神经10 mm长节段缺损模型,导管组、电针联合导管组采用壳聚糖神经导管桥接于神经缺损处,并以正中神经缺损作为对照。电针联合导管组在术后第4天开始于患侧上肢天泉、曲泽穴进行电针治疗,每天治疗1次,每周连续治疗5次,共治疗4周。采用网格行走试验及除胶试验评估三组大鼠正中神经的运动与感觉功能恢复情况,并通过免疫荧光染色检测正中神经缺损处神经微丝蛋白(NF)和S100钙结合蛋白β(S100β)的表达以了解受损正中神经纤维的再生情况,对正中神经对应C5节段脊髓组织进行尼氏染色以观察脊髓神经元的存活情况。
结果
2
在行为学观察中,电针联合导管组大鼠的网格前肢失足率和除胶试验中的接触时间改善程度皆显著优于导管组和对照组(
P
<0.05);免疫荧光染色显示:经治疗后,电针联合导管组大鼠在正中神经缺损桥接处的近端、远端皆可看到NF和S100β表达,且表达的数目显著多于导管组(
P
<0.05)。此外尼氏染色显示电针联合导管组在C5节段内左前角运动神经元数量显著多于导管组与对照组(
P
<0.05)。
结论
2
电针联合神经导管移植治疗能促进发出正中神经的脊髓神经元存活,同时,电针可能更好地促进长节段缺损正中神经近侧断端的神经纤维再生长入桥接的壳聚糖神经导管内并到达远侧断端,进而促进大鼠损伤侧上肢的运动和感觉功能的恢复。
Objective
2
To investigate the effect of electroacupuncture combined with nerve conduit transplantation in repairing long segmental defect of median nerve.
Methods
2
Eighteen adult SD rats were randomly divided into control group, conduit group and conduit+EA group, with 6 rats in each group. A 10 mm defect model of the left median nerve in rats was established. The conduit group and the conduit+EA group were bridged with the chitosan conduit at the nerve defect, while the median nerve defect was used as a control. The conduit+EA group was treated with EA at Tianquan (PC2) and Quze (PC3) on the affected limb on the 4th day after the operation. The treatment was performed once a day and 5 consecutive treatments per week for a total of 4 weeks. The conduit+EA group received electroacupuncture at Tianquan (PC2) and Quze (PC3) points of the upper limb of the affected side on the 4th day after surgery, once a day, 5 times a week for a total of 4 weeks. The grid walking test and the tape removal test were used to evaluate the recovery of motor and sensory functions of the median nerve in the three groups of rats. The expression of neurofilament protein (NF) and S100 calcium-binding protein β (S100β) at the median nerve was detected by immunofluorescence staining to observe the regeneration of damaged median nerve fibers. Spinal cord corresponding to the median nerve at C5 segment was stained with Nissl to observe the survival neurons of spinal cord.
Results
2
In the behavioral test, the improvement of forelimb loss rate and contact time in tape removal test in the conduit+EA group was significantly better than that in the conduit group and the control group (
P
<
0.05). Immunofluorescence staining showed that, in the conduit+EA group, the expression of NF and S100β at the proximal and distal ends of the median nerve defect could be seen after treatment, and the number of NF and S100β was significantly higher than that in the conduit group (
P
<
0.05). In addition, Nissl staining showed that the number of motor neurons in the left anterior horn at the C5 segment of the conduit+EA group was significantly more than that in the conduit group and the control group (
P
<
0.05).
Conclusions
2
Electroacupuncture combined with nerve conduit transplantation can promote the survival of spinal cord neurons corresponding to the median nerve. Meanwhile, Electroacupuncture may better promote the growth of nerve fibers from the proximal end of the median nerve in the long segmental defect into the bridged chitosan nerve conduit to reach the distal end, thus promoting the recovery of motor and sensory functions of the injured upper limbs of rats.
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