中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (25): 4652-4659.doi: 10.3969/j.issn.2095-4344.2013.25.013

• 复合支架材料 composite scaffold materials • 上一篇    下一篇

鹿茸多肽复合膜提供周围神经再生的微环境

王克利1,路来金2,张静玲3,李相军4,景遐斌5   

  1. 1 解放军第二炮兵总医院骨科,北京市  100088
    2 吉林大学第一临床学院手外科,吉林省长春市  130021
    3 北京科技大学医院,北京市  100086
    4 吉林大学药学院病理教研室,吉林省长春市  130021
    5 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室,吉林省长春市  130021
  • 收稿日期:2013-03-07 修回日期:2013-05-03 出版日期:2013-06-18 发布日期:2013-06-18
  • 作者简介:王克利☆,男,汉族,1967年生,吉林大学白求恩医学部毕业,博士,主任医师,主要从事周围神经损伤修复的研究。 Woodpeck007@163.com
  • 基金资助:

    国家自然科学基金资助课题(30470833)。

Pilose antler polypeptide composite membrane supports a suitable microenvironment for peripheral nerve regeneration 

Wang Ke-li1, Lu Lai-jin2, Zhang Jing-ling3, Li Xiang-jun4, Jing Xia-bin5    

  1. 1 Department of Orthopedics, the Second Artillery General Hospital of Chinese PLA, Beijing  100088, China
    2 Department of Hand Surgery, Clinical College of Jilin University, Changchun  130021, Jilin Province, China
    3 University of Science and Technology Beijing, Beijing  100086, China
    4 Department of Pathology, School of Pharmacy, Jilin University, Changchun  130021, Jilin Province, China
    5 State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun  130021, Jilin Province, China
  • Received:2013-03-07 Revised:2013-05-03 Online:2013-06-18 Published:2013-06-18
  • About author:Wang Ke-li☆, M.D., Chief physician, Department of Orthopedics, the Second Artillery General Hospital of Chinese PLA, Beijing 100088, China Woodpeck007@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30470833

摘要:

背景:既往研究证实聚乳酸聚羟基乙酸共聚物复合膜具有良好的生物相容性,稳定的机械强度,无毒副作用,可控的降解速率等特点。而鹿茸多肽含有多种活性物质,主要有促进DNA合成和细胞分化的作用。
目的:观察鹿茸多肽-聚乳酸聚羟基乙酸共聚物复合膜对大鼠坐骨神经再生的影响。
方法:手术显露36只Wistar大鼠坐骨神经,随机分成3组。假手术组游离坐骨神经后不作任何处理,对照组和实验组切断坐骨神经后行神经断端直接吻合,实验组于神经吻合断端包裹鹿茸多肽-聚乳酸聚羟基乙酸共聚物复合膜。每组于术后第2,4,6周各取4只大鼠,分别行组织学检测、免疫组织化学检测、反转录-多聚酶链式反应检测。
结果与结论:①组织学检测:术后2,4,6周神经轴突再生率和成熟度比较,对照组<实验组<假手术组。②免疫组化检测:术后2,4,6周神经纤维轴突及髓鞘转化生长因子β1、胰岛素样生长因子抗原染色和抗原表达比较,假手术组<对照组<实验组。③反转录多聚酶链式反应:在6周时,检测出转化生长因子β1和胰岛素样生长因子 mRNA表达,假手术组<对照组<实验组。结果表明鹿茸多肽-聚乳酸聚羟基乙酸共聚物复合膜能够提供神经再生所需要的微环境和神经生长因子,促进周围神经再生。

关键词: 生物材料, 组织工程复合支架材料, 鹿茸多肽, 聚乳酸, 聚羟基乙酸, 复合膜, 周围神经, 神经再生, 国家自然科学基金

Abstract:

BACKGROUND: Studies have confirmed that polylactic acid-polyglycolic acid membrane has good biocompatibility, stable mechanical strength, non-toxic side effects and controllable degradation rate. Pilose antler polypeptide contains a variety of active materials, basically promoting DNA synthesis and cell differentiation.
OBJECTIVE: To investigate the repair effect of pilose antler polypeptide-polylactic acid-polyglycolic acid copolymer composite membrane on sciatic nerve injuries in rats.
METHODS: Thirty-six male Wister rats were subject to expose the sciatic nerve after surgery and then randomly divided into sham operation group, control group and experimental group. Rats in the sham operation group received no treatment after removal of the sciatic nerve; those in the control group underwent direct end-to-end nerve anastomosis; while those in the experimental group were wrapped by pilose antler polypeptide-polylactic acid-polyglycolic acid copolymer composite membrane after the end-to-end nerve anastomosis. Four rats were collected from each group, respectively, at postoperative weeks 2, 4, 6 for histological examination, immunohistochemical examination and reverse transcription-PCR detection.
RESULTS AND CONCLUSION: (1) Histological detection: 2, 4, 6 weeks after operation, the regeneration ratios and degree of maturity of neurites ranked as follows: the control group < the experimental group < the sham operation. (2) Immunohistochemical detection: 2, 4, 6 weeks after operation, the transforming growth factor β, insulin-like growth factors antigen dyeing and antigen expression of neurites and myelin sheath ranked as follows: the sham operation group < the control group < the experimental group. (3) Reverse transcription-PCR: 6 weeks after operation, the mRNA expression of transforming growth factor β and insulin-like growth factors was detected as follows: the sham operation group < the control group < the experimental group. These results suggest that pilose antler polypeptide-polylactic acid-polyglycolic acid copolymer composite membrane can provide the necessary microenvironment of nerve regeneration and nerve growth factor, and promote the peripheral nerve regeneration.

Key words: biomaterials, tissue-engineered composite scaffold, pilose antler polypeptide, polylactic acid, polyglycolic acid, composite membrane, peripheral nerve, neural regeneration, National Natural Science Foundation of China

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