中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (3): 457-464.doi: 10.3969/j.issn.2095-4344.2013.03.013

• 药物控释材料 drug delivery materials • 上一篇    下一篇

许旺细胞及小肠黏膜下层复合生长因子缓释微球修复周围神经缺损

张开伟1,段 宏2,项 舟2,肖 睿3,陈久毅1   

  1. 1贵阳中医学院第一附属医院骨科,贵州省贵阳市 550001
    2四川大学华西医院骨科,四川省成都市 610041
    3宜宾市第一人民医院,四川省宜宾市 644000
  • 收稿日期:2012-07-02 修回日期:2012-10-19 出版日期:2013-01-15 发布日期:2013-01-15
  • 通讯作者: 段宏,博士,副主任医师,四川大学华西医院骨科,四川省成都市 610041 duanhong1970@yahoo.com.cn
  • 作者简介:张开伟☆,男,1973年生,贵州省贵阳市人,2010年四川大学华西临床医学院毕业,博士,副主任医师,主要从事骨与关节损伤方面的研究。 zkw1973@yahoo.com.cn

Combination of Schwann cells, small intestinal submucosa and growth factor sustained-release microspheres for repair of peripheral nerve defects

Zhang Kai-wei1, Duan Hong2, Xiang Zhou2, Xiao Rui3, Chen Jiu-yi1   

  1. 1 Department of Orthopedic Surgery, First Affiliated Hospital of Guiyang College of Traditional Chinese Medicine, Guiyang 550001, Guizhou Province, China
    2 Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
    3 Department of Orthopedics, First People’s Hospital of Yibin, Yibin 644000, Sichuan Province, China
  • Received:2012-07-02 Revised:2012-10-19 Online:2013-01-15 Published:2013-01-15
  • Contact: Duan Hong, Doctor, Associate chief physician, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China duanhong1970@yahoo.com.cn
  • About author:Zhang Kai-wei☆, Doctor, Associate chief physician, Department of Orthopedic Surgery, First Affiliated Hospital of Guiyang College of Traditional Chinese Medicine, Guiyang 550001, Guizhou Province, China zkw1973@yahoo.com.cn

摘要:

背景:前期实验已初步证实许旺细胞复合小肠黏膜下层及碱性成纤维细胞生长因子构建的人工神经具有体外神经活性、趋化性。
目的:观察许旺细胞及小肠黏膜下层复合碱性成纤维细胞生长因子缓释微球修复周围神经缺损后神经传导的再通情况。
方法:制作SD大鼠坐骨神经缺损模型,随机分组:实验组以许旺细胞及小肠黏膜下层复合碱性成纤维细胞生长因子缓释微球修复,阳性对照组以许旺细胞及小肠黏膜下层复合游离碱性成纤维细胞生长因子修复,阴性对照组以许旺细胞及小肠黏膜下层修复,空白对照组以自体神经修复。
结果与结论:术后16周实验组再生神经纤维数目,DiI示踪标记的阳性神经元数量、S-100及神经细丝蛋白的阳性表达率、髓鞘及再生轴突的超微结构恢复、神经传导速度及复合动作电位的改善均优于阳性对照组与阴性对照组(P < 0.05)。表明许旺细胞复合小肠黏膜下层及碱性成纤维细胞生长因子缓释微球构建的人工神经可重建坐骨神经缺损后的神经传导通路。

关键词: 生物材料, 生物材料与药物控释, 碱性成纤维细胞生长因子, 小肠黏膜下层, 许旺细胞, 周围神经缺损, 神经传导, 缓释微球, 省级基金, 生物材料图片文章

Abstract:

BACKGROUND: To combine Schwann cells (SCs) and small intestinal submucosa (SIS) with basic fibroblast growth factor (bFGF) is a feasible way to construct artificial nerve that possesses nerve activity and chemotaxis in vitro.
OBJECTIVE: To observe the recanalization of neural pathways after repairing peripheral defects with bFGF controlled release microspheres combined with SCs and SIS.
METHODS: Models of sciatic nerve defects were established in Sprague-Dawley rats, and then randomized into: experimental group repaired with bFGF controlled release microspheres combined with SCs and SIS, positive control group with SCs and SIS combined with free bFGF, negative control group with SCs and SIS, and blank control group with autologous nerve.
RESULTS AND CONCLUSION: The number of regenerated nerve fibers, number of DiI tracer-positive neurons, positive expression rate of S-100 and neurofilament protein, ultrastructure of regenerated myelin and axons, nerve conduction velocity and composite action potential in the experimental group were superior to those in the positive and negative control groups at 16 weeks after operation (P < 0.05). These findings indicate that bFGF controlled release microspheres combined with SCs and SIS can reconstruct the neural pathways following sciatic nerve injury.

Key words: biomaterials, biomaterials and drug-controlled release, basic fibroblast growth factor, small intestinal submucosa, Schwann cells, peripheral nerve defects, nerve conduction, sustained-release microspheres, provincial grants-supported paper, biomaterial photographs-containing paper

中图分类号: