中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (3): 336-340.doi: 10.3969/j.issn.2095-4344.2016.03.006

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

海螵蛸/外消旋聚乳酸复合人工骨材料的制备及表征

王 伟1, 2,肖荣驰1,韩小伟3,覃广兵2,肖 颖1,欧 俊4   

  1. 1桂林医学院附属医院脊柱骨病外科,广西壮族自治区桂林市  541000 2广西桂林医学院,广西壮族自治区桂林市  5410003长治医学院附属和平医院,山西省长治市  0460004桂林理工大学,广西壮族自治区桂林市  541000
  • 收稿日期:2015-10-28 出版日期:2016-01-15 发布日期:2016-01-15
  • 通讯作者: 肖荣驰,主任医师,桂林医学院附属医院脊柱骨病外科,广西壮族自治区桂林市 541000
  • 作者简介:王伟, 男,1976年生,山西省长治市人,汉族,广西桂林医学院在读硕士,主要从事骨创伤及骨关节病方面的基础及临床研究。
  • 基金资助:
    广西医疗卫生适宜技术研究与开发课题(S201407-01)

Preparation and characterization of cuttlebone/racemic polylactic acid composite artificial bone materials 

Wang Wei1, 2, Xiao Rong-chi1, Han Xiao-wei3, Qin Guang-bing2, Xiao Ying1, Ou Jun4   

  1. 1Department of Spinal Surgery, Affiliated Hospital of Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China; 2Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China; 3Affiliated Peace Hospital of Changzhi Medical College, Changzhi 046000, Shanxi Province, China; 4Guilin University of Technology, Guilin 541000, Guangxi  Zhuang Autonomous Region, China
  • Received:2015-10-28 Online:2016-01-15 Published:2016-01-15
  • Contact: Xiao Rong-chi, Chief physician, Department of Spinal Surgery, Affiliated Hospital of Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China
  • About author:Wang Wei, Studying for master's degree, Department of Spinal Surgery, Affiliated Hospital of Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China; Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Guangxi Provincial Technology Research and Development for Medical Hygiene, No.S201407-01

摘要:

文章快速阅读:

 

文题释义:
海螵蛸:是乌贼科无针乌贼或金乌贼等海洋动物的干燥内壳,海螵蛸中钙含量为26.7%,此外,还含有丰富的微量元素,其主要成分为碳酸钙,结构型为文石,属于天然材料,磷酸钙无机材料是构成人骨无机质的主要成分,因而与自然骨组织有天然的亲和性,并有促进骨愈合的相关报道;但其脆性较大,强度较低,为了提高它的韧性和线型加工性能,可以制成复合材料对其进行改性。

外消旋聚乳酸:是高分子有机材料,由乳酸和消旋体制得,有良好的生物相容性,脂肪族聚酯结构决定了它是一种柔性材料,具有较高的弹性和伸长率,但缺乏一定的刚性和模量,添加无机物海螵蛸,提高了其刚性和硬度,并且其表面带有极性,与人体细胞、多糖和蛋白质能以氢键结合,与机体组织有较强的亲和力。

 

背景:海螵蛸富含钙元素,与自然骨组织有天然的亲和性,但其单独作为支撑材料应用时脆性较大、强度较低。
目的:自主研发海螵蛸/外消旋聚乳酸复合人工骨组织支架材料,并检测其各项性能。
方法:采用盐析法将海螵蛸和外消旋聚乳酸分别以1∶2、2∶1、1∶1的质量比组合,制备成复合人工骨,以单纯海螵蛸为对照,检测4种材料的微观结构、孔隙率、水结合力、生物力学及体外降解性能。
结果与结论:海螵蛸表面棘状起,纹理清晰,多孔状;复合人工骨类似松质骨,大孔孔径500-1 500 μm,小孔孔径150-300 μm,微孔较少,孔间连通性好。3种复合人工骨的抗弯强度、弹性模量、体外降解性能均优于海螵蛸(P < 0.05),孔隙率低于海螵蛸(P < 0.05),复合人工骨组间上述指标比较差异均无显著性意义;4组间水结合力比较差异无显著性意义。表明海螵蛸/外消旋聚乳酸复合人工骨具有良好的微观结构、力学性能与降解性能。 
ORCID: 0000-0001-8695-1715 (肖荣驰)

关键词: 生物材料, 骨生物材料, 海螵蛸, 外消旋聚乳酸, 人工骨, 力学强度, 降解性, 孔隙率

Abstract:

BACKGROUND: Cuttlebone which is rich in calcium has a natural affinity with the nature bone tissue. However, when the cuttlebone is applied as supporting material independently, its brittleness is larger and the intensity is lower.
OBJECTIVE: To independently research and develop cuttlebone/racemic polylactic acid composite artificial bone tissue scaffolds, and detect their various performance.
 
METHODS: The composite artificial bone was prepared by combining the cuttlebone and racemic polylactic acid at the weight ratio of 1:2, 2:1 and 1:1 using salting out method. The pure cuttlebone was taken as control. The microstructure, porosity, water binding force, biological mechanics and in vitro degradation performance were determined.
RESULTS AND CONCLUSION: The surface of cuttlebone had spine shape, clear texture and cellular distribution. Composite artificial bone was similar to the cancellous bone, whose big pore diameter was 500-1 500 μm and small pore diameter was 150-300 μm. Composite artificial bone had less micropores, and the connectivity between the holes is good. The bending strength, the elastic modulus, in vitro degradation properties of these three kinds of composite artificial bone were better compared with cuttlebone (P < 0.05), porosity was less than that of cuttlebone (P < 0.05), and there were no significant differences between these composite artificial bone groups. There was no significant difference in the water binding force between these four groups. These results demonstrate that cuttlebone/racemic polylactic acid composite artificial bone has good microstructure, mechanical properties and degradation performance.