中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (10): 1545-1549.doi: 10.3969/j.issn.2095-4344.3026

• 组织工程软骨材料Tissue-engineered cartilage • 上一篇    下一篇

载庆大霉素丝素蛋白作为半月板修复材料的安全性和抗菌性能

徐昌奎1,蒲小兵2,陆  遥3,陈加荣4,潘  磊1   

  1. 1佛山市三水区人民医院脊柱关节外科,广东省佛山市  528000;2四川大学华西第四医院骨科,四川省成都市   610000;3南方医科大学珠江医院关节骨病外科,广东省广州市  510000;4南部战区总医院骨科,广东省广州市  510000
  • 收稿日期:2020-03-14 修回日期:2020-03-19 接受日期:2020-05-09 出版日期:2021-04-08 发布日期:2020-12-18
  • 通讯作者: 潘磊,博士,佛山市三水区人民医院脊柱关节外科,广东省佛山市 528000
  • 作者简介:徐昌奎,男,1991年生,江西省赣州市人,汉族,2018年南方医科大学毕业,硕士,医师,主要从事关节外科及软骨组织工程方面的研究。
  • 基金资助:
    广东省自然科学基金(2014A030310147),项目名称:磁力构建骨髓间充质干细胞板层状组织工程结构修复关节软骨缺损的实验研究

Safety and antibacterial properties of gentamicin-loaded silk fibroin in meniscus repair

Xu Changkui1, Pu Xiaobing2, Lu Yao3, Chen Jiarong4, Pan Lei1    

  1. 1Department of Spine and Joint, Sanshui District People’s Hospital of Foshan, Foshan 528000, Guangdong Province, China; 2Department of Orthopedics, West China Fourth Hospital, Sichuan University, Chengdu 610000, Sichuan Province, China; 3Department of Osteoarthritis, Zhujiang Hospital of Southern Medical University, Guangzhou 510000, Guangdong Province, China; 4Department of Orthopedics, General Hospital of Southern Theater Command, Guangzhou 510000, Guangdong Province, China
  • Received:2020-03-14 Revised:2020-03-19 Accepted:2020-05-09 Online:2021-04-08 Published:2020-12-18
  • Contact: Pan Lei, MD, Department of Spine and Joint, Sanshui District People’s Hospital of Foshan, Foshan 528000, Guangdong Province, China
  • About author:Xu Changkui, Master, Physician, Department of Spine and Joint, Sanshui District People’s Hospital of Foshan, Foshan 528000, Guangdong Province, China
  • Supported by:
    the Natural Science Foundation of Guangdong Province, No. 2014A030310147

摘要:

文题释义:
丝素蛋白:是蚕丝的主要成分,占蚕丝质量的70%-80%,是一种无生理活性的天然生物大分子,其来源广、成本低,相较其他天然高分子具有更好的细胞黏附和生长特性,以及更为可控的降解性能和可塑性,对组织无毒副作用,在组织工程、药物缓释等领域发挥出巨大的应用潜力。 
半月板修复:半月板是位于股骨内、外侧髁与胫骨平台之间的纤维软骨结构,损伤类型主要有纵裂、径向裂、斜裂、水平裂、复合裂。由于半月板切除后对膝关节生物力学的影响,目前对损伤半月板进行缝合固定已成为治疗半月板损伤的共识。

背景:丝素蛋白材料具有良好的生物相容性、力学性能及可生物降解等优点,但在临床中其作为一种缝线固定材料应用于半月板撕裂缝合修复未见报道。
目的:制备载庆大霉素的丝素蛋白材料,分析其生物相容性与抗菌性能。
方法:采用三元溶液溶解脱胶后的天然蚕茧,经过透析、冻干、再溶解、成型等处理制备丝素蛋白材料,将庆大霉素溶解于丝素蛋白溶液中制备载庆大霉素的丝素蛋白材料。将丝素蛋白材料、载庆大霉素的丝素蛋白材料分别与小鼠前成软骨细胞共培养,1,3,5 d后,采用MTT法检测细胞增殖;共培养24 h后,采用钙黄绿素染色检测材料的细胞毒性作用,流式细胞仪检测细胞早期凋亡情况,扫描电镜观察细胞在材料表面的黏附情况。将丝素蛋白材料、载庆大霉素的丝素蛋白材料分别与抗凝血混合,采用溶血实验检测材料的溶血率。将丝素蛋白材料、载庆大霉素的丝素蛋白材料分别与金黄色葡萄球菌、大肠杆菌共培养,进行细菌计数、扫描电镜观察与抑菌圈实验。 
结果与结论:①两种材料对细胞的增殖、早期凋亡无明显影响;②两种材料无明显的细胞毒性;在两种材料表面黏附的细胞生长状态良好,排列紧密,细胞形态舒展;③两种材料具有良好的血液相容性,未引起溶血反应;④载庆大霉素的丝素蛋白材料对金黄色葡萄球菌、大肠杆菌具有明显的抑制作用,且对金黄色葡萄球菌的抑制作用更明显;⑤结果表明,载庆大霉素丝素蛋白材料具有良好的生物相容性和抗菌性。

关键词: , 材料, 丝素蛋白, 半月板, 生物相容性, 抗菌性, 半月板修复

Abstract: BACKGROUND: Silk fibroin material has good biocompatibility, excellent mechanical properties, biodegradation and other advantages. However, it has not been used as a kind of suture fixation material in the repair of meniscus tear.
OBJECTIVE: To prepare gentamicin loaded silk fibroin material and analyze its biocompatibility and antibacterial properties.
METHODS: After dissolving the degummed natural silkworm cocoon with ternary solution, the silk fibroin material was prepared by dialysis, freeze-drying, redissolution and molding, and gentamicin was dissolved in silk fibroin solution to prepare gentamicin loaded silk fibroin material. Silk fibroin material and gentamicin loaded silk fibroin material were co-cultured with mouse pre chondroblasts respectively. After 1, 3, and 5 days, cell proliferation was detected by MTT assay. After 24 hours of co-culture, the cytotoxic effect of the material was detected by calcein staining. The early apoptosis of cells was detected by flow cytometry. The adhesion of cells on the surface of the material was observed by scanning electron microscope. Silk fibroin material and gentamicin loaded silk fibroin material were mixed with anticoagulant separately. The hemolysis rate of the material was detected by hemolysis experiment. The silk fibroin material and gentamicin loaded silk fibroin material were co-cultured with S.aureus and E.coli respectively. The bacterial count, scanning electron microscope observation and bacteriostatic circle experiment were carried out.  
RESULTS AND CONCLUSION: (1) The two materials had no significant effect on cell proliferation and early apoptosis. (2) There was no obvious cytotoxicity between the two materials, and the cells adhered on the surfaces of the two materials grew well, arranged tightly, and the morphology of the cells expanded. (3) The two materials had good blood compatibility and did not cause hemolytic reaction. (4) Gentamicin loaded silk fibroin material had obvious inhibition on S.aureus and E.coli, and the inhibition on S.aureus was more obvious. (5) The results showed that the gentamicin loaded silk fibroin material has good biocompatibility and antibacterial property.

Key words: bone, material, silk fibroin, meniscus, biocompatibility, antibacterial property, meniscus repair

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