华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

用木瓜蛋白酶建立兔颞颌关节骨关节炎模型的研究

杨峰,史宗道   

  1. 518026 深圳市儿童医院(杨 峰),四川大学华西口腔医学院(史宗道)
  • 收稿日期:2002-10-25 修回日期:2002-10-25 出版日期:2002-10-20 发布日期:2002-10-20

A Study on Papain-induced Osteoarthritis in Rabbit Temporomandibular Joint

Yang Feng,Shi Zongdao   

  1. Yang Feng The Paediatric HospitalofShenzhen, Shenzhen Shi Zongdao West China College ofStomatology, Sichuan University
  • Received:2002-10-25 Revised:2002-10-25 Online:2002-10-20 Published:2002-10-20

摘要:

目的:探讨采用木瓜蛋白酶在兔颞颌关节上腔注射,建立兔颞颌关节骨关节炎动物模型的可行性。方法:对 6只日本大耳白兔行颞颌关节上腔注射,实验侧注射013 ml 116%木瓜蛋白酶溶液,对照侧注射013 ml生理盐水,1 周后重复1次,首次注射后第2、4、6周分批处死实验动物,切取颞颌关节做大体及组织病理学观察。结果:实验侧关节注射木瓜蛋白酶后出现关节软骨变薄、基质分解破坏、滑膜增生等炎症及退行性改变,并随观察时间的延长而进一步发展,但在首次注射后第6周时出现不同程度的修复性改变。结论:兔颞颌关节注射木瓜蛋白酶后的改变与人颞颌关节骨关节炎病理改变具有相似性,可重复,可作为研究颞颌关节骨关节炎病理、发病机理及治疗方法的实验工具。

关键词: 木瓜蛋白酶, 颞颌关节, 骨关节炎, 动物模型

Abstract:

Objective:The aim of this study was to set up an animal model of osteoarthritis (OA) in the rabbit temporomandibular joint (TMJ).Methods:0.3 ml of 1.6% papain solutionwas injected into the upper compartment of each leftTMJ of six Japanese big ear white rabbits, and the same volume of saline was injected into the upper compartment of leftTMJ as control. The rabbitswere sacrificed 2, 4, 6 weeks respectively afterinjections and the TMJ specimenswere pathologically examined.Results:The degenera- tive changes were demonstrated in the TMJs injected with papain,such as thinner articular cartilage, fibrillation and destroyed car- tilage matrix, and inflammation, proliferation, and degeneration of the synovial tissue. All these changes were much worse with prolonged observation time. Some kinds of reparative changes appeared in the sixth week after papain injection.Conclusion: Pathological similarities between papain induced rabbitTMJ osteoarthritis and human TMJ osteoarthritiswere observed. This animal model has good reproducibility and hence can be used for exploring pathogenesis of this disease and selection of treatments for os- teoarthritis of TMJ.

Key words: papain, temporomandibular joint, osteoarthritis, animal model