中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (2): 232-237.doi: 10.3969/j.issn.2095-4344.2017.02.013

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

载细胞甲壳素曲率混合膜修复角膜上皮损伤

鲁  静1,武士科2 ,陈  光1,赵  越1,李  丹1
  

  1. 1河北大学附属医院眼科,河北省保定市  071000;2河北大学附属医院骨科,河北省保定市  071000
  • 收稿日期:2016-10-25 出版日期:2017-01-18 发布日期:2017-02-27
  • 通讯作者: 武士科,主治医师,河北大学附属医院骨科,河北省保定市 071000
  • 作者简介:鲁静,女,1981年生,汉族,河北省保定市人,硕士,主治医师,主要从事生物、细胞方面的研究。
  • 基金资助:

    河北省医学科学研究重点课题(zl20140018)

Chitin hybrid membrane carrying cells repairs corneal epithelial injury

Lu Jing1, Wu Shi-ke2, Chen Guang1, Zhao Yue1, Li Dan1
  

  1. 1Department of Ophthalmology, 2Department of Orthopaedics, the Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • Received:2016-10-25 Online:2017-01-18 Published:2017-02-27
  • Contact: Wu Shi-ke, Attending physician, Department of Orthopaedics, the Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • About author:Lu Jing, Master, Attending physician, Department of Ophthalmology, the Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • Supported by:

    the Key Medical Research Project of Hebei Province, No. zl20140018

摘要:

文章快速阅读:

 

文题释义:
甲壳素
:是一种高分子多糖,在自然界中含量比较高,是一种含氮的天然有机化合物存在于动物的外壳中,在体内通过化学键和其它物质结合在一起,是带正电的阳性纤维。
甲壳素的特性:①良好的生物相容性:对动植物的生物相容性都较好,在体内很少产生抗原,免疫原性比较低;②可降解性:甲壳素在体内能够被溶菌酶降解;③衍生物口服没有毒性:甲壳素的衍生物为壳聚糖,壳聚糖为口服药物,口服没有毒性;④促进伤口愈合:甲壳素能够活化细胞,促进细胞的新陈代谢,诱导机体产生细胞因子,细化皮肤、减少瘢痕形成、加速伤口愈合;⑤抗血栓的作用:对血清中低分子量物质通透性较高,对血清蛋白吸附能力比较强;⑥具有免疫、止痛、消炎、止血、抑菌等作用。

背景:研究发现甲壳素是一种比较好的生物材料,但关于甲壳素载角膜上皮细胞混合膜修复兔角膜上皮损伤的研究不多。
目的:观察载角膜上皮细胞甲壳素曲率混合膜对兔角膜上皮损伤的修复作用。
方法:取18只新西兰大白兔,建立左眼角膜上皮损伤模型,随机分2组,实验组于角膜上皮损伤处植入载角膜上皮细胞甲壳素曲率混合膜,对照组植入甲壳素曲率混合膜。植入后1,3,7 d,观察角膜上皮损伤面积、眼角膜病理组织学及超微结构。
结果与结论:①角膜上皮损伤面积:实验组植入后1,3 d的角膜损伤面积明显小于对照组(P < 0.05),两组植入后7 d 的角膜损伤均全完愈合;②眼角膜病理组织学观察结果:植入后7 d,实验组角膜上皮层和基质层连接紧密,有6层左右上皮细胞层,修复完整,结构整齐,最外层平整光滑;对照组角膜上皮层也和基质层连接紧密,有6层左右上皮细胞层,修复完整,但上皮层层次紊乱,最外层表面不平整;③眼角膜超微结构:植入后7 d,实验组角膜上皮细胞细胞为六边形,排列较紧密,细胞表面平整;对照组角膜上皮细胞也为六边形,表面不平整,细胞之间有间隙;④结果表明:载角膜上皮细胞甲壳素曲率混合膜可促进大白兔角膜上皮损伤的修复。

关键词: 生物材料, 材料相容性, 甲壳素, 角膜上皮细胞, 修复, 兔, 损伤, 组织工程材料

Abstract:

BACKGROUND: Chitin has been found to be a good biomaterial, but research on chitin carrying corneal epithelial cells for rabbit corneal epithelial injury is little reported.
OBJECTIVE: To investigate the repair outcomes of chitin hybrid membrane carrying corneal epithelial cells in the rabbit corneal epithelial injury.
METHODS: Eighteen New Zealand white rabbits were enrolled and made into left corneal epithelial injury models, and then randomized into two groups and treated with chitin hybrid membrane carrying corneal epithelial cells (experimental group) and chitin hybrid membrane (control group), respectively. The damage area, histological changes and ultrastructure of the cornea were observed at 1, 3, and 7 days after implantation.
RESULTS AND CONCLUSION: Damage area of the cornea in the experimental group was significantly less than that in the control group at 1 and 3 days after implantation (P < 0.05), and the cornea in both two groups healed well at 7 days after implantation. At 7 days after implantation, in both two groups, the corneal epithelium with six layers adhered to the corneal stroma closely, which was repaired completely and regularly. Comparatively speaking, the cornea in the experimental group possessed smooth outer layer. Besides, in the experimental group, the hexagonal corneal epithelial cells arranged closely with flat surface; while the hexagonal corneal epithelial cells in the control group showed no smooth surface and gaps between cells. These results indicate that chitin hybrid membrane carrying corneal epithelial cells promotes the repair of rabbit corneal epithelial injury.

Key words: Epithelium, Cornea, Polysaccharides, Tissue Engineering

中图分类号: