中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (34): 5515-5519.doi: 10.3969/j.issn.2095-4344.2014.34.018

• 细胞外基质材料 extracellular matrix materials • 上一篇    下一篇

胶原蛋白海绵的生物特性及体内降解吸收

迟妍妍1,2,乐尧金1,2,刘旭昭2,李 琪2,雷 静1,3,汤顺清3   

  1. 1广东省医用胶原工程技术研究开发中心,广东省广州市  5106632广州创尔生物技术股份有限公司,广东省广州市  5102503暨南大学生物医学工程研究所,广东省广州市  510632
  • 修回日期:2014-06-23 出版日期:2014-08-20 发布日期:2014-08-20
  • 作者简介:迟妍妍,女,1986年生,浙江省温州市人,汉族,2011年上海海洋大学毕业,硕士,主要从事分子生物学研究。 并列第一作者:乐尧金,男,1987年生,江西省九江市人,汉族,2012年暨南大学毕业,硕士,初级工程师,主要从事功能蛋白研究。
  • 基金资助:

    广东省科技计划项目(2012B070800007);广州经济技术开发区科技项目(2014S-P010);广州市科技计划项目(2014JR000021);广东省海洋经济创新发展区域示范专项(GD2012-B03-002)

Biological properties, degradation and absorption of collagen sponges in vivo

Chi Yan-yan1, 2, Le Yao-jin1, 2, Liu Xu-zhao2, Li Qi2, Lei Jing1, 3, Tang Shun-qing3   

  1. 1Guangdong Medical Collagen Engineering and Technology Research Center, Guangzhou 510663, Guangdong Province, China; 2Guangzhou Trauer Biotechnology Co., Ltd., Guangzhou 510250, Guangdong Province, China; 3Institute of Biomedical Engineering, Jinan University, Guangzhou 510632, Guangdong Province, China
  • Revised:2014-06-23 Online:2014-08-20 Published:2014-08-20
  • About author:Chi Yan-yan, Master, Guangdong Medical Collagen Engineering and Technology Research Center, Guangzhou 510663, Guangdong Province, China; Guangzhou Trauer Biotechnology Co., Ltd., Guangzhou 510250, Guangdong Province, China Le Yao-jin, Master, Engineer, Guangdong Medical Collagen Engineering and Technology Research Center, Guangzhou 510663, Guangdong Province, China; Guangzhou Trauer Biotechnology Co., Ltd., Guangzhou 510250, Guangdong Province, China
  • Supported by:

    the Science and Technology Plan of Guangdong Province, No. 2012B070800007; the Scientific Project of the Development Zone of Guangzhou Gity, No. 2014S-P010; the Science and Technology Plan of Guangzhou City, No. 2014JR000021; the Special Fund for the Innovative and Developmental Region of Marine Economy in Guangdong Province, No. GD2012-B03-002

摘要:

背景:胶原蛋白海绵适用于各种损伤创面的止血修复及残腔填充,具有广泛的临床应用和科学研究价值。

目的:研究胶原蛋白海绵的生物特性及其在动物体内的生物相容性和降解情况。
方法:通过扫描电镜测定胶原蛋白海绵的空间结构、孔径和孔隙率,透射电镜观察其构象,圆二色谱法分析其二级结构及变性温度。在新西兰白兔脊柱侧肌肉内植入胶原蛋白海绵,组织病理切片观察海绵降解吸收情况。

结果与结论:胶原蛋白海绵具有疏松多孔结构,孔径分布为40-150 μm,平均100 μm,孔壁1 μm左右,孔隙率约95.8%,具有典型的多孔材料结构,胶原具有周期性横纹区带。胶原蛋白溶液在220,206 nm处分别有一正、负峰,具有典型的胶原蛋白三螺旋结构特征;胶原蛋白海绵与胶原溶液具有相似的二级结构及热稳定性。胶原蛋白海绵植入肌肉第4周开始降解,至第12周胶原蛋白海绵可见率为20%左右;植入2周后胶原蛋白海绵周围局部组织出现异物刺激及炎症反应,随创面愈合,炎症反应逐渐减轻并消失,在整个材料植入和降解周期内无明显纤维囊结构形成,植入部位未见组织坏死情况发生。表明胶原蛋白海绵具有良好的生物活性、生物相容性及降解性能。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 材料相容性, 胶原蛋白, 胶原蛋白海绵, 体内降解, 生物相容性, 圆二色谱, 扫描电镜

Abstract:

BACKGROUND: Collagen sponges are applied for hemostatic use, wound healing, and residual cavity filling, which have great values in clinical application and scientific research.

OBJECTIVE: To investigate the biological properties, biocompatibility and biodegradability of collagen sponges in vivo.
METHODS: The spatial structure, pore diameter and porosity of collagen sponges were characterized by scanning electron microscopy. Transmission electron microscopy was used to observe the conformation of collagen sponges. The secondary structure and thermal denaturation temperature of collagen sponges were analyzed by circular dichroism spectrum. Collagen sponges were implanted intramuscularly into the spinal cord of New Zealand rabbits to observe the degradation and absorption and histological changes in vivo.
RESULTS AND CONCLUSION: Collagen sponges had porous structure with varying pore sizes ranging  40-150 μm, the mean pore size of 100 μm, the thickness wall of 1 μm, and a porosity of approximately 95.8%. Collagen sponges had a typical porous structure and periodic light and dark zones. The solution of collagen sponges had a weak positive band near 220 nm and an intense negative band near 206 nm, which indicated a classic triple helix. And the secondary structure and thermal stability of collagen sponges were similar to that of liquid collagen. Collagen sponges began to degrade at 4 weeks, and remained 20% at 12 weeks. These sponges had been associated with foreign body response and inflammation within 2 weeks after implantation. With wound healing, inflammatory reactions gradually reduced and disappeared. During the implantation and degradation of sponges, no significant fibrous capsule formed and no tissue necrosis occurred at implantation site, indicating that collagen sponges have good performance in bioactivity, biocompatibility and degradation.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: collagen, egg white, materials testing

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