中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (47): 7051-7056.doi: 10.3969/j.issn.2095-4344.2016.47.008

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

羟基乙酸负载软骨细胞组织工程软骨修复喉软骨缺损

贾  敏,袁  琨
  

  1. 华中科技大学同济医学院附属武汉市中心医院,湖北省武汉市  430014
  • 收稿日期:2016-08-26 出版日期:2016-11-18 发布日期:2016-11-18
  • 通讯作者: 袁琨,主任医师,华中科技大学同济医学院附属武汉市中心医院,湖北省武汉市 430014
  • 作者简介:贾敏,女,1977年生,汉族,主治医师,主要从事耳鼻咽喉缺损修复研究。

Glycolic acid loaded with chondrocytes repairs laryngeal cartilage defects

Jia Min, Yuan Kun 
  

  1. the Central Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China
  • Received:2016-08-26 Online:2016-11-18 Published:2016-11-18
  • Contact: Yuan Kun, Chief physician, the Central Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China
  • About author:Jia Min, Attending physician, the Central Hospital of Wuhan, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430014, Hubei Province, China

摘要:

文章快速阅读:

 

文题释义:
羟基乙酸
:是一种简单的聚酯,它具有优异的可生物降解性和生物相容性,其最终降解产物为二氧化碳和水,通过机体正常的新陈代谢排出体外,是一类较重要的医用高分子材料,被广泛应用于人体或动物骨折的内固定、骨缺损的修复、肌腱的修补及人体或动物血管、肌肉及其他组织缝合等方面。
软骨组织工程:是将软骨种子种植于可生物降解、组织相容性好的生物材料形成复合物,然后再把该复合物植入软骨缺损处,生物材料自行降解的过程中,种植的细胞形成新的软骨来填充缺损。

背景:三维可降解生物支架材料的选择对组织工程软骨的构建十分重要,它能为细胞生长提供依附的支架及增殖空间。
目的:观察羟基乙酸负载软骨细胞修复喉软骨缺损的效果。
方法:取新西兰白兔60只,随机分为2组,对照组、实验组建立喉软骨缺损模型,实验组于缺损处植入负载软骨细胞的羟基乙酸,对照组缺损处植入羟基乙酸,植入后4,8周进行大体与组织学观察。
结果与结论:①大体观察结果:植入后4周,对照组缺损部位色泽暗红,创面明显,与周围组织界限清晰;实验组缺损部位色泽暗红,表面光滑,与周围软骨平齐;②甲苯胺蓝染色结果:植入后8周,实验组喉软组织缺损部位未见明显炎症反应,缺损部位无明显软骨陷窝,有大量软骨细胞生成;对照组缺损部位存在轻微炎症反应,缺损部位存在轻微陷窝,有少许软骨细胞生成;③糖胺聚糖及Ⅱ型胶原蛋白阳性面积:实验组植入4,8周的糖胺聚糖及Ⅱ型胶原蛋白阳性面积大于对照组(P < 0.05);④结果表明:羟基乙酸负载软骨细胞的组织工程软骨可促进喉软骨缺损的修复。

关键词: 生物材料, 软骨生物材料, 羟基乙酸, 软骨细胞, 喉软骨缺损, 喉软骨缺损模型, 胶原蛋白, 甲苯胺蓝染色

Abstract:

BACKGROUND: A three-dimensional biodegradable scaffold is important for tissue-engineered cartilage construction, and it that can provide conditions for cell attachment and proliferation.
OBJECTIVE: To observe the treatment outcomes of glycolic acid loaded with chondrocytes in laryngeal cartilage repair.
METHODS: Sixty New Zealand white rabbits were enrolled and randomly divided into control and experimental groups. Laryngeal cartilage defect models were established in each group, followed by implanted with glycolic acid loaded with chondrocytes and glycolic acid, respectively. Gross and histological observations were conducted at 4 and 8 weeks after implantation.
RESULTS AND CONCLUSION: Gross observation showed that at 4 weeks after implantation, a deep red wound with an obvious boundary was seen in the control group; the dark red and smooth defect parallel to the surrounding tissue was found in the experimental group. Toluidine blue staining revealed that at 8 weeks after implantation, the laryngeal defect site showed no obvious inflammation and cartilage collapse, with numerous newly-formed chondrocytes in the experimental group; in contrast, mild inflammation and cartilage collapse were found in the defect region of the control group, and few newly-formed chondrocytes appeared. The positive areas of glycosaminoglycan and type II collagen in the experimental group were significantly larger than those in the control group at 4 and 8 weeks after implantation (P < 0.05). These results indicate that glycolic acid loaded with chondrocytes contributes to the repair of laryngeal cartilage defects.

Key words: Biocompatible Materials, Chondrocytes, Tissue Engineering

中图分类号: