中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (38): 6160-6164.doi: 10.3969/j.issn.2095-4344.2014.38.016

• 组织构建基础实验 basic experiments in tissue construction • 上一篇    下一篇

硬膜外注入亚甲蓝对腰椎脊髓及脊神经节结构的影响

刘春雨,金  丽,彭宝淦   

  1. 武警总医院骨二科(脊柱外科),北京市  100039
  • 收稿日期:2014-08-16 出版日期:2014-09-10 发布日期:2014-09-10
  • 通讯作者: 彭宝淦,主任医师,教授,武警总医院骨二科(脊柱外科),北京市 100039
  • 作者简介:刘春雨,男,1983年生,北京市人,满族,2012年辽宁医学院毕业,硕士,医师,主要从事脊柱外科的研究。

Lumbar epidural injection of methylene blue affects the spinal cord and spinal ganglia structures

Liu Chun-yu, Jin Li, Peng Bao-gan   

  1. Second Department of Orthopedics (Department of Spinal Surgery), General Hospital of Chinese Armed Police Force, Beijing 10039, China
  • Received:2014-08-16 Online:2014-09-10 Published:2014-09-10
  • Contact: Peng Jin-gan, Chief physician, Professor, Second Department of Orthopedics (Department of Spinal Surgery), General Hospital of Chinese Armed Police Force, Beijing 10039, China
  • About author:Liu Chun-yu, Master, Physician, Second Department of Orthopedics (Department of Spinal Surgery), General Hospital of Chinese Armed Police Force, Beijing 10039, China

摘要:

背景:亚甲蓝可阻碍感觉神经的异常疼痛传导,其机制是阻断缓激肽诱导的痛觉过敏,消除局部组织炎症引起的痛觉过敏反应。
目的:观察亚甲蓝溶液对大鼠腰椎脊髓及脊神经节功能的影响,明确亚甲蓝治疗椎间盘源性腰痛的安全性。
方法:将120只Wistar大鼠随机分为5组,每组24只。暴露大鼠腰节段硬膜,亚甲蓝0.2 mL组、亚甲蓝        1 mL组、亚甲蓝2 mL组分别于大鼠硬膜外注入相应量的亚甲蓝;生理盐水组大鼠硬膜外注入1 mL生理盐水;空白对照组不进行此步操作。分别在注入后30 min,2 h,24 h,72 h每组分别随机对6只大鼠进行灌流固定,并切除相应节段脊髓及神经节,行苏木精-伊红染色,在光镜下观察对比组织结构改变。
结果与结论:亚甲蓝各组大鼠注入后30 min,2 h,24 h,72 h时间脊髓及神经根苏木精-伊红染色,显示脊髓背侧面结构完整,白质与灰质分界清晰,白质中神经纤维致密,纤维间有圆形或卵圆形的神经胶质细胞核;灰质后角神经纤维致密;神经元细胞,胞核圆形染色浅,核仁明显;细胞群间有成束的神经纤维。亚甲蓝各组大鼠腰椎脊髓及脊神经节与生理盐水组及空白对照组比较均无明显的组织结构变化。结果表明硬膜外注入1%亚甲蓝对脊髓及脊神经结构无明显影响。



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 组织工程, 亚甲蓝注射液, 脊髓, 神经节, 安全性

Abstract:

BACKGROUND: Methylene blue can hinder abnormal pain conduction via the sensory nerve, and its mechanism is to block bradykinin-induced hyperalgesia and eliminate pain caused by local tissue inflammation.
OBJECTIVE: To observe the influence of methylene blue solution on the lumbar spinal cord and spinal ganglia function of rats, and to investigate whether methylene blue is safe for treating discogenic low back pain.
METHODS: Totally 120 Wistar rats were randomly divided into five groups: three experimental groups, a saline control group and a blank control group, n=24 in each group. Lumbar segmental dura was exposed in rats. In the three experimental groups, 0.2, 1, and 2 mL methylene blue were injected epidurally, respectively. The saline control group was subjected to the epidural injection of 1 mL saline. In the blank control group, there was no treatment. Six rats from each group were selected randomly and perfused at 30 minutes, 2 hours, 24 hours, 72 hours after injection, respectively. Then, the corresponding segments of the spinal cord and ganglions were removed. Hematoxylin eosin staining was used for comparing histological and structural changes under light microscope.
RESULTS AND CONCLUSION: Hematoxylin-eosin staining showed that at 30 minutes, 2 hours, 24 hours and 72 hours after injection of methylene blue, the spinal dorsal side exhibited the structural integrity, clear boundaries between the white matter and gray matter, dense nerve fibers in the white matter, and round or oval nuclei of glial cells among fibers; dense nerve fibers in the posterior horn of gray matter; light-colored neuronal nuclei with prominent nucleoli; a bundle of nerve fibers among cell populations. There was no significant change in tissue structure of lumbar spinal cord and spinal ganglia between the experimental groups and the saline control group 
or between the experimental groups and the blank control group. Thus, the epidural injection of 1% methylene blue has no significant effect on the spinal cord and spinal nerve structures.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: spinal cord, methylene blue, ganglia

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