中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (36): 5799-5805.doi: 10.3969/j.issn.2095-4344.2017.36.011

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

建立双膦酸盐性颌骨坏死动物模型

吴世超1,王颖姝2,轩  宾1,张  健1   

  1. 1天津医科大学口腔医院,天津市  300070;2天津市滨海新区塘沽口腔医院,天津市  300450
  • 收稿日期:2017-08-30 出版日期:2017-12-28 发布日期:2018-01-04
  • 通讯作者: 张健,主任医师,天津医科大学口腔医院口腔颌面外科,天津市 300070
  • 作者简介:吴世超,男,1980年生,天津市人,满族,2004年佳木斯大学口腔医学院毕业,医师,主要从事口腔修复及种植修复方面工作。
  • 基金资助:

    天津市高等学校科技发展基金计划项目(20130130)

Establishing an animal model of bisphosphonate-related osteonecrosis of the jaw

Wu Shi-chao1, Wang Ying-shu2, Xuan Bin1, Zhang Jian1   

  1. 1Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China; 2Tanggu Stomatological Hospital of Binhai New District, Tianjin 300450, China
  • Received:2017-08-30 Online:2017-12-28 Published:2018-01-04
  • Contact: Zhang Jian, Chief physician, Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China
  • About author:Wu Shi-chao, Physician, Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China
  • Supported by:

    the Science and Technology Development Program of Tianjin Universities, No. 20130130

摘要:

文章快速阅读:

文题释义:
双膦酸盐:双膦酸盐(bisphosphonate,BP)作为抗骨吸收药物,临床上广泛用于治疗骨质疏松、佩吉特病以及恶性肿瘤的骨转移。分为静脉滴注和口服两种给药方式,其中唑来膦酸是静脉给药的双膦酸盐药物中抗骨吸收特性最强的。
颌骨坏死:由于细菌感染以及物理或化学因素,使颌骨产生炎性病变,导致活性骨组织死亡,形成死骨。

摘要
背景:
大部分双膦酸盐性颌骨坏死者由于拔牙、种植等颌骨创伤引起,创口不愈合,并发感染流脓,疼痛不适,最终死骨形成,其致病机制尚不清楚。
目的:建立成熟稳定的双膦酸盐性颌骨坏死动物模型,观察双膦酸盐性颌骨坏死的临床表现、影像学改变及组织病理学特点,为进一步探讨双膦酸盐性颌骨坏死的致病机制奠定基础。
方法:24只雌性SD大鼠随机分为2组,每组12只。实验组腹腔注射唑来膦酸(0.2 mg/kg),每周3次持续12周;对照组腹腔注射等量生理盐水,每周3次持续12周。12周后所有大鼠麻醉下拔除左下第1磨牙,临床观察拔牙创愈合情况。拔牙后8周所有动物安乐死。对大鼠左下颌骨进行X射线片检查和Micro-CT检查,探究其影像学改变。对下颌骨软硬组织进行苏木精-伊红染色和Masson染色,探究其组织病理学特点,进一步确定双膦酸盐性颌骨坏死动物模型。
结果与结论:①拔牙后8周,临床观察发现实验组大鼠拔牙创不愈合,并且实验动物口内可见死骨暴露;②影像学检查及组织病理学检查均证实双膦酸盐性颌骨坏死的发生;③组织学染色结果显示实验组拔牙创周围牙龈胶原纤维纤细;④结果说明,腹腔注射唑来膦酸联合拔牙的方法能够成功诱导大鼠发生双膦酸盐性颌骨坏死样病变。唑来膦酸的软组织毒性及抗血管形成作用能够促进双膦酸盐性颌骨坏死发生,创伤带来的酸性局部微环境也提高了发生双膦酸盐性颌骨坏死的可能性。

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: 0000-0002-3537-2280(吴世超)

关键词: 组织构建, 骨组织工程, 颌骨, 骨坏死, 双膦酸盐, 唑来膦酸, 动物模型, 大鼠

Abstract:

BACKGROUND: Bisphosphonates-related osteonecrosis of the jaw (BRONJ) is thought to be caused by trauma to dentoalveolar structures after dental extraction and implantation that have a limited capacity for bone healing followed by infection, suppuration and pain, further inducing equestration, but the pathogenesis is poorly understood.
OBJECTIVE: To establish a stable animal model of BRONJ, and to observe its clinical manifestations, radiological changes and pathological characters, thereby paving ways for further understanding the pathogenesis of BRONJ.
METHODS: Twenty-four female Sprague-Dawely rats were randomly allocated into experimental and control groups (n=12 per group). The rats in the experimental group were given the intraperitoneal injection of 0.2 mg/kg zoledronic acid, and the controls received the intraperitoneal injection of same volume of normal saline, three times weekly for consecutive 12 weeks. Subsequently, left first mandibular molars were extracted under general anesthesia, and the bone healing was observed. At 8 weeks after tooth extraction, all the rats were euthanized. The rat left jaws were examined by X-ray and micro-CT to explore the imaging changes. The histopathological characteristics of the mandibular soft and hard tissues were investigated by hematoxylin-eosin staining and Masson staining, to further testify the BRONJ model.
RESULTS AND CONCLUSION: At 8 weeks after tooth extraction, the wound was unable to heal, and nonvital bone tissues were visible in the experimental group. The findings revealed on radiographies and pathological sections were in accordance with the characteristics of BRONJ. Masson staining results showed slender collagen fibrils around the dental extraction wound were slender in the experimental group. These results indicate that the intraperitoneal injection of zoledronate combined with tooth extraction can induce BRONJ in rats. The soft tissue toxicity and anti-angiogenesis of zoledronic acid can promote the occurrence of BRONJ, and the local acidic microenvironment caused by trauma probably is involved in the occurrence of BRONJ.

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: Phosphates, Jaw, Osteonecrosis, Models, Animal, Tissue Engineering

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