中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (51): 7611-7621.doi: 10.3969/j.issn.2095-4344.2016.51.002

• 骨组织构建 bone tissue construction • 上一篇    下一篇

根据Ⅰ型胶原氨基端末肽、Ⅰ型胶原羧基端末肽、骨钙素及骨特异性碱性磷酸酶早期诊断骨不连

王清华1,林坚平2,沈宁江2,史占军3,周  钢2,吴多能2   

  1. 海南省人民医院,1外科,2关节外科,海南省海口市  570311;3南方医科大学南方医院关节外科,广东省广州市  510515
  • 收稿日期:2016-09-28 出版日期:2016-12-09 发布日期:2016-12-09
  • 通讯作者: 林坚平,博士,主任医师,海南省人民医院关节外科,海南省海口市 570311
  • 作者简介:王清华,女,1974年生,海南省海口市人,汉族,2005年江西医学院毕业,副主任护师,主要从事外科临床、骨愈合方面的研究。
  • 基金资助:

    海南省自然科学基金资助项目(808212)

C- and N-terminal telopeptides of type I collagens, osteocalcin and bone-specific alkaline phosphatase used for the early diagnosis of bone nonunion

Wang Qing-hua1, Lin Jian-ping2, Shen Ning-jiang2, Shi Zhan-jun3, Zhou Gang2, Wu Duo-neng2   

  1. 1Department of Surgery, 2Department of Joint Surgery, Hainan Central Hospital, Haikou 570311, Hainan Province, China; 3Department of Joint Surgery, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Received:2016-09-28 Online:2016-12-09 Published:2016-12-09
  • Contact: Lin Jian-ping, M.D., Chief physician, Department of Joint Surgery, Hainan Central Hospital, Haikou 570311, Hainan Province, China
  • About author:Wang Qing-hua, Associate chief nurse, Department of Surgery, Hainan Central Hospital, Haikou 570311, Hainan Province, China
  • Supported by:

    the Natural Science Foundation of Hainan Province, No. 808212

摘要:

文章快速阅读:

文题释义:
骨不连:正常骨骼的代谢处于动态平衡之中,成骨过程和破骨过程紧密耦联,而骨不连患者的这一动态平衡被破坏,骨吸收大于骨形成,最终形成骨不连,如果能够通过测量骨代谢生化标志物浓度从而有效地对骨代谢过程进行监测,就有可能为早期诊断骨不连提供依据。
骨特异性碱性磷酸酶:是骨生长过程中持续释放时间最长的细胞因子,并且还具有组织特异性强、时间变异性小的特点。其由成骨细胞产生,是碱性磷酸酶的亚型,存在于成骨细胞膜结合物。骨特异性碱性磷酸酶是反映骨形成和成骨细胞活性的敏感和特异指标,能排除肝、肾、肠等疾病影响,是成骨细胞的胞外酶,成骨细胞活性增强,则骨特异性碱性磷酸酶分泌增加。
摘要
背景:
对血液中骨代谢标志物的浓度进行检测以对骨折愈合情况进行评估具有使用简单、创伤小、变异小的特点,如何找到一种合适的标志物以预测骨不连的发生是当前该领域研究的热点。
目的:建立骨折不愈合动物模型,探讨实验性骨折不愈合的生化指标变化规律。
方法:选取五六月龄纯种新西兰大白兔20只,随机均分为2组,骨缺损组在左前臂桡骨中段截除1.5 cm (包括骨膜),骨断端用骨蜡封闭髓腔;骨折组只是在前臂桡骨中段造成骨折。2组分别于术前、术后2-8,10,12周进行前臂的X射线片检查观察桡骨缺损区愈合情况,并抽取血清采用生物素双抗体夹心ELISA法检测骨吸收特异标志物(包括Ⅰ型胶原羧基端末肽、Ⅰ型胶原氨基端末肽、人抗酒石酸酸性磷酸酶5b)及骨形成特异标志物(包括骨钙素、骨特异性碱性磷酸酶)的表达变化。
结果与结论:①分析2组手术前后骨代谢指标的变化发现,骨缺损组骨代谢一直持续在较高水平,骨不连早期诊断的临床预测可以依赖于多个血清生化指标的同时跟踪监测;②除人抗酒石酸酸性磷酸酶5b意义不大之外,骨缺损组中I型胶原羧基端末肽在术后第5周均值最高,骨钙素、骨特异性碱性磷酸酶、Ⅰ型胶原氨基端末肽在术后4或5周均值明显下降,可以说明Ⅰ型胶原羧基端末肽、Ⅰ型胶原氨基端末肽、骨钙素、骨特异性碱性磷酸酶能快速随骨形成和骨吸收而迅速改变,敏感地反映体内骨代谢的具体状态;③系统性监测生化指标如Ⅰ型胶原羧基端末肽、骨钙素、骨特异性碱性磷酸酶、Ⅰ型胶原氨基端末肽的变化能反映兔骨折不愈合的早期进程,它们是否均可以作为反映骨吸收与骨形成的敏感性、特异性较强的指标, 是否可以早期诊断兔骨不连,需要进一步深入探讨。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0001-8276-2460(王清华)

关键词: 组织构建, 骨组织工程, 骨不连, 生物标志物, 骨钙素, 人抗酒石酸酸性磷酸酶5b, Ⅰ型胶原氨基端末肽, Ⅰ型胶原羧基端末肽, 骨特异性碱性磷酸酶, 海南省自然科学基金

Abstract:

BACKGROUND: Detecting the serum levels of biochemical markers to assess bone fractures is simple, mini-invasive and specific. Thereafter, to predict bone nonunion by choosing an appropriate marker has become a hotspot.
OBJECTIVE: To establish an animal model of bone nonunion and explore the changing rules of the biochemical markers during the process of nonunion.
METHODS: Twenty New Zealand white rabbits aged 5-6 months were enrolled and divided into two groups. In bone defect group, a 15-mm length of bone (including the periosteum) was removed from the left mid-radius, and the medullary cavities were closed with bone wax. In bone fracture group, the mid-radius was fractured. X-ray examination was taken and blood samples were extracted preoperatively and at 2, 3, 4, 5, 6, 7, 8, 10, and 12 weeks after surgery. The serum levels of osteocalcin and bone-specific alkaline phosphatase (BSAP) as markers of bone formation, and C-terminal telopeptide of type I collagen (CTX), N-terminal telopeptide of type I collagen (NTX), and tartrate-resistant acid phosphatase 5b (TRACP 5b) as markers of bone resorption, were measured using biotin double-antibody sandwich ELISA.
RESULTS AND CONCLUSION: In the bone defect group, the bone metabolism was at a high level, suggesting that the early diagnosis of bone nonunion depends on several biochemical indicators. In the bone defect group, the serum level of CTX peaked at 5 weeks, and the serum levels of osteocalcin, BSAP and NTX decreased obviously at 4 or 5 weeks, while the serum TRACP 5b concentration did not change significantly, indicating that all above markers except TRACP 5b sensitively reflect the bone turnover in vivo. Further studies are needed to determine whether systematic monitoring of the biochemical markers can reflect the bone turnover effectively and can be used for the early diagnosis of nonunion in the rabbit model.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Fractures, Bone, Osteocalcin, Collagen Type I, Tissue Engineering

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