中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (21): 3150-3155.doi: 10.3969/j.issn.2095-4344.2016.21.016

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

聚甲基丙烯酸甲酯水蛭素人工晶状体的生物相容性

李素华1,张旖旎2,李剑波1   

  1. 1南阳市中心医院,河南省南阳市  4730002南昌大学医学部基础医学院,江西省南昌市 330000
  • 收稿日期:2016-04-05 出版日期:2016-05-20 发布日期:2016-05-20
  • 作者简介:李素华,女,1980年生,河南省延津县人,汉族,2007年新乡医学院毕业,硕士,主治医师,主要从事眼底病方面的研究。

Biocompatibility of hirudin peptide-modified acrylic intraocular lens

Li Su-hua1, Zhang Yi-ni2, Li Jian-bo1   

  1. 1Nanyang Central Hospital, Nanyang 473000, Henan Province, China; 2Nanchang University School of Basic Medical Sciences, Nanchang 330000, Jiangxi Province, China
  • Received:2016-04-05 Online:2016-05-20 Published:2016-05-20
  • About author:Li Su-hua, Master, Attending physician, Nanyang Central Hospital, Nanyang 473000, Henan Province, China

摘要:

文章快速阅读:

 

文题释义:
水蛭素:
是水蛭及其唾液腺中已提取出多种活性成分中活性最显著的一种成分,是由65-66个氨基酸组成的小分子蛋白质。水蛭素能高效抗凝血、抗血栓形成,以及阻止凝血酶催化的凝血因子活化和血小板反应等进一步血瘀现象。此外,它还能抑制凝血酶诱导的成纤维细胞的增殖和凝血酶对内皮细胞的刺激。
聚甲基丙烯酸甲酯水蛭素人工晶状体:由硅胶、聚甲基丙烯酸甲酯、水凝胶符合水蛭素等材料制成,具有优良的物化性能和生物相容性,将其运用于白内障中效果理想,能够改善视力,能够为白内障的治疗提供新的思路,具有较高的临床应用价值。人工晶状体人工合成材料制成的植入眼内替代原来的晶状体的一种特殊透镜,其形状功能类似人眼的晶状体,具有质量轻、光学性能高、无抗原性、致炎性、致癌性和能生物降解等特性。


背景:传统晶状体虽然能够改善患者视力,但是材料生物相同性较差,炎症异物反应发生率较高。
目的:探讨聚甲基丙烯酸甲酯水蛭素人工晶状体的生物相容性,研究水蛭素多肽改性丙烯酸系人工晶状体在眼科疾病中的应用效果。
方法:①采用浸泡法在活化后的丙烯酸表面构建水蛭素多肽的生物涂层,通过细胞学观察聚甲基丙烯酸甲酯水蛭素晶状体的生物相容性。②将6只新西兰大白兔随机等分为常规组和水蛭素多肽组。常规组新西兰大白兔植入常规晶体,水蛭素多肽组植入聚甲基丙烯酸甲酯水蛭素人工晶状体。
结果与结论:①聚甲基丙烯酸甲酯水蛭素人工晶体在植入3 d后丙烯酸系人工晶体上细胞大量增殖,并且细胞形态铺展良好,而细胞膜上细胞较少且存在较多的呈球形未铺展状态;②水蛭素多肽组新西兰大白兔边缘攀附的细胞向人工晶状面迁移一些,但是并没有阻碍中心视野,而常规组依然覆盖者纤维化的细胞膜;与常规组相比,水蛭素多肽组植入后SchirmerⅠ试验值升高,而泪膜破裂时间减少;③结果提示聚甲基丙烯酸甲酯水蛭素人工晶状体具有优良的物化性能和生物相容性,将其运用于白内障中效果理想,能够改善视力,能够为白内障的治疗提供新的思路,具有较高的临床应用价值。

 

关键词: 生物材料, 材料相容性, 白内障, 水蛭素, 丙烯酸, 人工晶状体, 生物相容性, 物化性能

Abstract:

BACKGROUND: Because of poor biocompatibility, conventional intraocular lenses (IOLs) used to improve visual acuity can result in a higher incidence of inflammatory foreign body reactions.

 

OBJECTIVE: To study the biocompatibility and therapeutic effects of hirudin peptide-modified acrylic IOL on eye diseases.

 

METHODS: By immersion coating method, we prepared a polymethylmethacrylate IOL by the modification with hirudin polypeptides and observed its biocompatibility through the cytological observation. In this study, six New Zealand white rabbits were equivalently randomized into conventional and hirudin peptide grouppolypeptide hirudin group. Rabbits in the conventional group were given conventional lens implantation; while those in the hirudin peptide group underwent hirudin peptide-modified polymethylmethacrylate IOL.

 

RESULTS AND CONCLUSION: Three days after implantation of hirudin peptide-modified polymethylmethacrylate IOL, cells proliferated and spread well on the acrylic IOL, but on the cell membrane, there were a few cells most of which were gathered spherically with no spreading. In the hirudin peptide group, some cells attached to the border zone migrated to the IOL surface, but did not impede the central visual field; in the conventional group, the IOL surface was still covered by fibrotic cell membrane. Compared with the conventional group, the score in the Schirmer I test was increased but the breakup time of tear film decreased in the hirudin peptide group. To conclude, the polymethylmethacrylate IOL modified by hirudin peptides has good physicochemical properties and biocompatibility, increases visual acuity, and yields satisfactory outcomes in the cataract treatment, which provides a new insight into the treatment of cataract.

 

 

 

Key words: Cataract, Inflammation, Phakic Intraocular Lenses, Tissue Ergineering

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