中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (16): 2310-2316.doi: 10.3969/j.issn.2095-4344.2016.16.004

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

可吸收生物玻璃注射体在骨质疏松大鼠椎体内的支撑及诱导成骨机制

边 竟1,龚泰芳1,陈 文1,郑红梅2   

  1. 十堰市太和医院(湖北医药学院附属医院),1骨科一病区,2普通外科,湖北省十堰市  442000
  • 收稿日期:2016-03-06 出版日期:2016-04-15 发布日期:2016-04-15
  • 通讯作者: 郑红梅,硕士,主任医师/副教授,硕士生导师,湖北省十堰市太和医院普外科,湖北省十堰市 442000
  • 作者简介:边竟,女,1977年生,湖北省十堰市人,汉族,硕士,主要从事新型生物材料在骨科疾病中的应用及基础研究。
  • 基金资助:

    湖北省卫生厅青年人才项目(WJ2015Q040):骨癌痛大鼠痛觉调控核团特异性基因与蛋白表达谱研究

Absorbable bio-glass injection in osteoporosis mice: a support for the osteoporotic vertebral body and mechanism of osteogenic induction

Bian Jing1, Gong Tai-fang1, Chen Wen1, Zheng Hong-mei2   

  1. 1First Orthopedics Ward, 2Department of General Surgery, Taihe Hospital of Shiyan (Affiliated Hospital of Hubei Medical University), Shiyan 44200, Hubei Province, China
  • Received:2016-03-06 Online:2016-04-15 Published:2016-04-15
  • Contact: Zheng Hong-mei, Master, Chief physician, Associate professor, Master’s supervisor, Department of General Surgery, Taihe Hospital of Shiyan (Affiliated Hospital of Hubei Medical University), Shiyan 44200, Hubei Province, China
  • About author:Bian Jing, Master, First Orthopedics Ward, Taihe Hospital of Shiyan (Affiliated Hospital of Hubei Medical University), Shiyan 44200, Hubei Province, China
  • Supported by:

    the Young Talent Project of Hubei Provincial Health Department, No. WJ2015Q040

摘要:

文章快速阅读:

 

文题释义:
可吸收生物玻璃注射体:为生物玻璃与磷酸钙骨水泥的复合物,主要成分为SiO2、CaO、P2O3和Na2O,与人体骨类似,能够在材料界面与人体骨组织之间形成牢固化学键,增加连接强度,提高移植物与界面的稳定性,传导性优于磷酸钙骨水泥。
骨质疏松症模型:目前临床中主要有7种动物模型:①绝经后骨质疏松症模型,通过手术或药物“去势法”,模拟人类绝经后雌激素缺乏而导致的骨质疏松,最符合人体骨质疏松的发病特点,为目前研究骨质疏松症模型应用最多的模型方法;②老年性骨质疏松症模型,是目前惟一一种能证明增龄性骨脆性骨折的理想模型;③老年男性骨质疏松症模型可通过将雄性大鼠去睾18周;④内分泌代谢性骨质疏松症模型,可将雌性Wistar大鼠制成糖尿病模型后进行去势手术;⑤营养缺乏性骨质疏松症模型,通过高蛋白低钙饮食可模拟膳食不平衡导致的骨质疏松;⑥药物性骨质疏松症模型,通过糖皮质激素、维甲酸导致骨质疏松;⑦失用性骨质疏松症模型,通过全身或局部制动方法来模拟临床中继发骨折或其他手术后不同程度的制动,而导致的骨质疏松。
背景:生物玻璃与磷酸钙骨水泥复合形成的可吸收生物玻璃注射体,能在材料界面与人体骨组织之间形成牢固化学键,提高移植物与界面的稳定性。
目的:观察可吸收生物玻璃注射体在骨质疏松大鼠模型椎体内的支撑及诱导成骨机制。
方法:切除30只雌性SD大鼠双侧卵巢,制备骨质疏松模型。造模成功后,随机分成3组,在L3-5椎体骨缺损处分别置入聚甲基丙烯酸甲酯、注射性磷酸钙骨水泥和可吸收生物玻璃注射体。置入后12周取置入节段椎体,进行生物力学、降解性能、Ca、P、碱性磷酸酶、骨密度、骨形态发生蛋白2和转化生长因子β水平检测,以及骨组织切片观察。
 结果与结论:可吸收生物玻璃注射体组的降解性能、抗压强度、表面羟基磷灰石沉积量、骨密度显著高于其余两组(P < 0.05),骨小梁相对体积、厚度和数量显著大于其他两组(P < 0.05),血清Ca、碱性磷酸酶、骨形态发生蛋白2和转化生长因子β水平显著高于其他两组(P < 0.05),血清P水平低于其他两组(P < 0.05)。结果表明,可吸收生物玻璃注射体可增强骨质疏松椎体内支撑力,诱导成骨,可能与提高骨形态发生蛋白和转化生长因子β的表达有关。
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
ORCID: 0000-0003-3640-1589(郑红梅)

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2, 转化生长因子β

Abstract:

BACKGROUND: Absorbable bio-glass injection composed by bio-glass and calcium phosphate bone cement can be tightly combined with bone tissue by a strong chemical bond to improve the stability of the bone-implant interface.

OBJECTIVE: To investigate the effect of absorbable bio-glass injection to support the vertebral body of osteoporosis mice and its mechanism of osteogenic induction.
METHODS: Osteoporosis models were prepared in 30 female Sprague-Dawley rats undergoing bilateral ovariectomy. After modeling, model rats were randomly divided into three groups, and given polymethylmethacrylate, injectable calcium phosphate bone cement and absorbable bio-glass injection into L3-5 vertebral bone defects, respectively. L3-5 segments were removed at 12 weeks after implantation to detect the biomechanical and degradation properties, levels of calcium and phosphate, alkaline phosphatase activity, bone mineral density, levels of bone morphogenetic protein 2 and transforming growth factor β, as well as histological observation. 
RESULTS AND CONCLUSION: In the absorbable bio-glass injection group, the degradation properties, compressive strength, surface hydroxyapatite deposition amount and bone mineral density were significantly higher than those in the other two groups(P < 0.05); trabecular bone relative volume, thickness and number were significant higher than those in the other two groups (P < 0.05); serum levels of calcium, alkaline phosphatase, bone morphogenetic protein 2 and transforming growth factor β were significantly higher than those in the other two groups(P < 0.05); but the level of serum phosphate was lower than that in the other two groups(P < 0.05). These results show that the absorbable bio-glass injection can enhance the support for the osteoporotic vertebral body and induce osteogenesis, probably by increasing bone morphogenetic protein 2 and transforming growth factor β levels.
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

Key words: Osteoporosis, Methylmethacrylates, Calcium Phosphates, Tissue Engineering