中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (12): 1690-1696.doi: 10.3969/j.issn.2095-4344.2016.12.003

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

新型可吸收生物玻璃注射体在骨质疏松椎体内支撑及诱导成骨的机制

隆海滨1,胡营营2,孙桂森1   

  1. 东营市胜利油田中心医院,1脊柱外科,2病理科,山东省东营市  257034
  • 收稿日期:2016-01-29 出版日期:2016-03-18 发布日期:2016-03-18
  • 通讯作者: 胡营营,主治医师,东营市胜利油田中心医院病理科,山东省东营市 257034
  • 作者简介:隆海滨,男,1980年生,山东省东营市人,汉族,主治医师,硕士,主要从事脊柱研究。

Mechanism of absorbable bioglass injection for vertebral body supporting and osteogenic induction in osteoporosis

Long Hai-bin1, Hu Ying-ying2, Sun Gui-sen1   

  1. 1Department of Spinal Surgery, 2Department of Pathology, Central Hospital of Shengli Oil Field, Dongying 257034, Shandong Province, China
  • Received:2016-01-29 Online:2016-03-18 Published:2016-03-18
  • Contact: Hu Ying-ying, Attending physician, Department of Pathology, Central Hospital of Shengli Oil Field, Dongying 257034, Shandong Province, China
  • About author:Long Hai-bin, Master, Attending physician, Department of Spinal Surgery, Central Hospital of Shengli Oil Field, Dongying 257034, Shandong Province, China

摘要:

 文章快速阅读:

文题释义:

可注射型生物玻璃:其主要成分为SiO2、CaO、P2O3和Na2O,与人体骨类似,在材料界面与人体骨组织之间形成牢固化学键,连接强度提供很高的移植物与界面稳定性,传导性优于磷酸钙骨水泥、羟基磷灰石。体内实验表明,生物玻璃置入体内后,可在其HCA-胶原层内发现已完成矿化的成熟骨细胞。生物玻璃具有较好的生物相容性和生物活性,具备骨传导和骨诱导活性,能在组织与材料之间引起细胞内外的反应。
新型可吸收生物玻璃注射体:生物玻璃因具有良好的生物活性和生物相容性倍受关注,将其作为可注射型材料与磷酸钙骨水泥复合形成新型可吸收生物玻璃注射体,可兼具二者优点,预计有更佳的应用空间。

骨质疏松:是一种系统性骨病,其特征是骨量下降和骨的微细结构破坏,表现为骨的脆性增加,因而骨折的危险性大为增加,即使是轻微的创伤或无外伤的情况下也容易发生骨折。骨质疏松症是一种多因素所致的慢性疾病。在骨折发生之前,通常无特殊临床表现。该病女性多于男性,常见于绝经后妇女和老年人。随着中国老年人口的增加,骨质疏松症发病率处于上升趋势,在中国乃至全球都是一个值得关注的健康问题。

 

背景:生物玻璃具有良好的生物活性和生物相容性,将其与磷酸钙骨水泥复合形成新型可吸收生物玻璃注射体,可兼具二者优点,预计有更佳的应用空间。
目的:探讨新型可吸收生物玻璃注射体在骨质疏松椎体内支撑及诱导成骨的机制。
方法:切除27只雌性SD大鼠双侧卵巢,制作骨质疏松模型,造模后1个月将大鼠随机分为3组,均在L4椎体制作骨缺损,实验组置入新型可吸收生物玻璃注射体,对照1组置入聚甲基丙烯酸甲酯骨水泥,对照2组置入注射性磷酸钙骨水泥。置入后12周,检测植入体抗压强度、降解性能、组织学成骨情况,以及血清骨形态发生蛋白2和转化生长因子β水平。

结果与结论:实验组抗压强度、羟基磷灰石沉积量、失重率显著高于两对照组(P < 0.05),骨小梁相对体积、厚度和数量显著大于两对照组(P < 0.05),骨形态发生蛋白2和转化生长因子β水平显著高于两对照组(P < 0.05)。表明新型可吸收生物玻璃注射体可能通过提高骨形态发生蛋白2和转化生长因子β水平,增强骨质疏松椎体的支撑力,提高诱导成骨效果。 

ORCID: 0000-0001-8560-6308(胡营营)

关键词: 生物材料, 骨生物材料, 新型可吸收生物玻璃注射体, 骨质疏松, 聚甲基丙烯酸甲酯, 注射性磷酸钙骨水泥, 力学性能, 骨形态发生蛋白, 转化生长因子

Abstract:

BACKGROUND: Bioglass has good biocompatibility and biological activity, which can be combined with calcium phosphate bone cement to form an absorbable bioglass that has the advantages of both materials and is expected to have a better use of space.
OBJECTIVE: To explore the mechamism of the new type of absorbable bioglass injection for vertebral body supporting and osteogenic induction in osteoporosis rats.
METHODS: Twenty-seven female Sprague-Dawley rats were selected to make osteoporosis models by bilateral ovariectomy, and after 1 month, the rats were randomized into three groups. Bone defect models were established in the lumbar L4 segment of all the rats. Rats in the experimental group were subjected to absorbable bioglass injection; rats in the control group 1 underwent polymethylmethacrylate bone cement injection; and rats in the control group 2 were given injectable calcium phosphate. Twelve weeks after implantation, the compressive strength, degradation and osteogenesis of the implant materials were detected, and levels of serum bone morphogenetic protein-2 and transforming growth factor-β were measured.
RESULTS AND CONCLUSION: The compressive strength, hydroxyapatite deposition amount, and weight loss ratio in the experimental group were significantly higher than those in the two control groups (P < 0.05); the relative volume, thickness and number of bone trabeculae in the experimental group were significantly higher than those in the control groups (P < 0.05); the bone morphogenetic protein-2 and transforming growth factor-β protein levels in the experimental group were significantly higher than those in the two control groups (P < 0.05). These findings indicate that the new-type absorbable bioglass can greatly strengthen the vertebral body supporting and promote osteogenic effect in osteoporosis by enhancing the bone morphogenetic protein-2 and transforming growth factor-β protein levels.