中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (28): 5101-5107.doi: 10.3969/j.issn.2095-4344.2013.28.001

• 骨组织构建 bone tissue construction •    下一篇

1型糖尿病小鼠下颌骨三维结构及组织形态

张 钧1,江莉婷1,王晋申2,周 琦2,高益鸣1   

  1. 1上海交通大学医学院附属瑞金医院口腔科,上海市  200025;
    2上海市伤骨科研究所,上海市  200025
  • 出版日期:2013-07-09 发布日期:2013-07-09
  • 通讯作者: 高益鸣,博士,上海交通大学医学院附属瑞金医院口腔科,上海市 200025 drgaoym@yahoo.com.cn
  • 作者简介:张钧,男,1973年生,江苏省苏州市人,汉族,1997上海第二医科大学毕业,主治医师。 zjjz11071@gmail.com
  • 基金资助:

    上海市科委医学引导项目(114119a3500)

Three-dimensional structure and morphology of the mandible in type 1 diabetes mellitus mice

Zhang Jun1, Jiang Li-ting1, Wang Jin-shen2, Zhou Qi2, Gao Yi-ming1   

  1. 1Department of Stomatology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai  200025, China;
    2Shanghai Institute of Traumatology and Orthopedics, Shanghai  200025, China
  • Online:2013-07-09 Published:2013-07-09
  • Contact: Gao Yi-ming, M.D., Department of Stomatology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China drgaoym@yahoo.com.cn
  • About author:Zhang Jun, Attending physician, Department of Stomatology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China zjjz11071@gmail.com
  • Supported by:

    Medical Guiding Project of Shanghai Science and Technology Committee, No. 114119a3500*

摘要:

背景:糖尿病是最常见的系统性疾病之一,常引起颌骨及全身其他骨骼结构的变化,以及矿物代谢的异常改变。

目的:观察1型糖尿病小鼠下颌骨三维结构以及组织病理学的改变。

方法:将小鼠随机分为对照组和糖尿病组,糖尿病组按50 mg/kg剂量连续5 d腹腔内注射链脲佐菌素建立1型糖尿病小鼠模型,对照组腹腔注射枸橼酸盐缓冲液。

结果与结论:造模3周后,运用显微CT技术观察两组小鼠下颌骨三维结构,对其松质骨及皮质骨骨微结构进行定量分析显示,与对照组比较,1型糖尿病小鼠下颌骨感兴趣区域内松质骨骨密度、骨体积分数、骨小梁数量及骨小梁厚度均显著减少(P < 0.01,P < 0.05),结构模型指数明显增大(P < 0.05);皮质骨骨密度、皮质骨面积减少(P < 0.05)。苏木精-伊红染色显示,1型糖尿病小鼠脱钙后下颌骨松质骨骨小梁数量及体积均变小。说明链脲佐菌素诱导的1型糖尿病小鼠下颌骨松质骨及皮质骨三维结构明显改变,且松质骨骨组织微结构改变更显著。

关键词: 组织构建, 骨组织构建, 1型糖尿病, 下颌骨骨结构, 松质骨, 皮质骨, 骨微结构, 骨形态计量学, 显微CT, 组织切片, 省级基金

Abstract:

BACKGROUND:Diabetes mellitus is one of the most common systemic diseases, which often leads to the changes of the jaw and other bone structure, as well as the abnormal changes of mineral metabolism.

OBJECTIVE: To observe the three-dimensional structure and histopathological changes of the mandible in type 1 diabetes mellitus mice.

METHODS: The mice were randomly divided into control group and diabetes mellitus group. The diabetes mellitus group received intraperitoneal injection of 50 mg/kg streptozotocin for 5 days to establish a type 1 diabetes mellitus model, and the control group received intraperitoneal injection of citrate buffer.

RESULTS AND CONCLUSION: At 3 weeks after modeling, the micro-CT technique was used to observe the three-dimensional structure of the mandibles in the two groups. The quantitative analysis on the microstructure of cancellous bone and cortical bone showed that the bone mineral density, bone volume fraction, trabecular number and trabecular thickness of cancellous bone in the interest region in the mandible of type 1 diabetes mellitus mice were significantly decreased when compared with that in the control group (P < 0.01, P < 0.05), while the structure model index was increased significantly (P < 0.05); the mineral density and area of cortical bone were decreased in the diabetes mellitus group (P < 0.05). Hematoxylin-eosin staining showed that the number and volume of mandibular trabeculae of type 1 diabetes mellitus mice were decreased. The results suggest that the three-dimensional structure of the cancellous bone and cortical bone in the streptozotocin-induced type 1 diabetes mellitus mice are changed significantly, and the microstructure change of the cancellous bone is more obvious.

Key words: tissue construction, bone tissue construction, type 1 diabetes mellitus, mandibular bone structure, cancellous bone, cortical bone, bone microstructure, bone morphometry, micro-CT, histological section, provincial grants-supported paper

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