医学研究与教育 ›› 2018, Vol. 35 ›› Issue (6): 19-23.DOI: 10.3969/j.issn.1674-490X.2018.06.004

• 基础医学 • 上一篇    下一篇

磁场对大鼠坐骨神经损伤后瘢痕处血管分布的影响

薛金伟1,何艳霞2,刘亚纯3,李英英3,卞琳3,张珂1   

  1. 1.河北大学附属医院, 河北 保定 071000;
    2.定兴县医院, 河北 定兴 072650;
    3.望都县中医医院, 河北 望都 072450
  • 收稿日期:2018-04-21 出版日期:2018-12-25 发布日期:2018-12-25
  • 作者简介:薛金伟(1978—),男,河北保定人,副主任医师,博士,硕士生导师,主要从事周围神经损伤临床与基础研究。 E-mail: 16239928@qq.com
  • 基金资助:
    保定市科学技术研究与发展计划项目(18ZF011)

  • Received:2018-04-21 Online:2018-12-25 Published:2018-12-25

摘要: 目的 观察磁场干预对大鼠周围神经损伤后神经瘢痕处血管分布的影响。方法 采用大小和年龄均类似的健康雄性SD大鼠160只,制作SD大鼠坐骨神经损伤模型(左侧),术后随机分为对照组、0.2 mT组、0.6 mT组、1.5 mT组,共4组。对照组只正常饲养,不予其他处理;0.2 mT组、0.6 mT组、1.5 mT组除正常饲养外,分别给予低强度(0.2 mT)、中等强度(0.6 mT)、高强度(1.5 mT)磁场干预,频率均为20 Hz,60 min/d。各组均于术后8周给予免疫组化和血管灌注,观察神经损伤瘢痕周围血管分布情况,并对实验数据进行统计学处理。结果 术后第8周,0.2 mT组、0.6 mT组、1.5 mT组与对照组相比微血管密度差异有统计学意义(P<0.01)。0.2 mT组、0.6 mT组、1.5 mT组神经瘢痕处血管密度分布比较均匀,血管走行比较规律,血管数量较多、密度较高。对照组血管密度分布不均,数量较少,走形欠规则。结论 磁场能够改变神经瘢痕处血管的分布情况,从而影响神经损伤处神经组织的血液供应。

关键词: 磁场, 神经瘢痕, 坐骨神经损伤, 神经再生, 血管构筑

Abstract: Objective To observe the effects of magnetic field intervention on the distribution of blood vessels in the scar after peripheral nerve injury in rats. Methods 160 SD rats were divided into 4 groups at random, 40 rats in each group. The experimental rats were made sciatic nerve injury model. Low intensity, medium intensity and high intensity(0.2 mT, 0.6 mT and 1.5 mT)were given to the experimental group for magnetic field intervention with a frequency of 20 Hz and 60 min/d. The rats of the control group were raised normally without treatment. At the 8th week after operation, vascular perfusion and immunohistochemistry were performed to observe the distribution of blood vessels at the nerve scar. Results At 8 weeks after surgery, compared with the control group(P<0.01), the blood vessels in the experimental group were more evenly distributed, more abundant, higher density and more regular vascular shape. Conclusion The magnetic field can change the blood vessel distribution at the nerve scar and improve the blood supply to the nerve tissue at the injury.

Key words: magnetic field, nerve scar, sciatic nerve injury, nerve regeneration, angioarchitecture

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