华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

生长激素对兔下颌髁突软骨细胞增殖活性及分泌功能的影响

黄宁1,罗颂椒2,杨红梅2   

  1. 1.口腔生物医学I程教育部重点实验室,四川大学; 2.四川大学华西口腔医院正畸科,四川成都610041
  • 收稿日期:2004-10-25 修回日期:2004-10-25 出版日期:2004-10-20 发布日期:2004-10-20
  • 通讯作者: 黄宁,Tel: 028-85503477
  • 作者简介:黄宁(1968-),男,河南人,讲师,博士
  • 基金资助:
    国家自然科学基金资助项目(3990016)

The Effects of Growth Hormone on Rabbit's Mandibular Condylar Chondrocytes Proliferation and Secretion in vitro

HUANG Ning1,LUO Song-jiao2, YANG Hong_ mei2   

  1. 1.Key. Laboratory of Oral Biomedical Engineering of Ministry of Educa- tiou, Sichuan University, Chengdu 610041,China;2. Dept .of Orthodontics,West China College of Stomatolog,Sichuan Uni- versity, Chengdu 610041,China
  • Received:2004-10-25 Revised:2004-10-25 Online:2004-10-20 Published:2004-10-20

摘要:

目的了解生长激素对体外培养的兔下领裸突软骨细胞周期、增殖活性及分泌功能的影响,为功能矫形治疗时下领裸突的生长改建提供可靠的实验依据。方法采用流式细胞仪和免疫组织化学方法,定量、定性地观察不同浓度的生长激素在不同的时间点对体外培养兔下领裸突软骨细胞的作用。结果①不同浓度的生长激素可刺激下领裸突软骨细胞的增殖活性,增殖指数(PI)变化以生长激素10 pg/ml, 24 h组最为显著,DNA合成变化以 10 r-tg/ml,12 h组变化最为明显。②生长激素有促进兔下领骸突软骨细胞分泌n型胶原的能力,以生长激素 10蒯闹组最为显著。结论生长激素可促进体外培养兔下领骸突软骨细胞的增殖活性及分泌II型胶原的能力。

关键词: 生长激素, 裸突软骨细胞, 增殖活性, II型胶原

Abstract:

Objective To study the effect of growth hormone (GH) on the proliferation and type II collagen secretion of chon- drocytes of mandibular condyle in rabbit in vitro .Methods Flow cytometry(FCM) and immunohistochemical technique were employed to observe the possible changes. Results 1TThe exogenic GH can enhance the proliferation and synthesis of DNA of the chondrocytes of mandibular condyle in rabbit in vitro.The suitable concentration of GH is 10 pg/ml厂[be synthesis of DNA reach- es the highest level after 12 hours, while the proliferation index (PI) hits the highest after 24 hours.② GH(10 J-g/ml) can stimu- late the secretion of type 1) collagen of the chondrocytes. Conclusion The exogenic GH can enhance the proliferation, the syn- thesis of DNA and the secretion of type n collagen of the chondrocytes of mandibular condyle in rabbit in vitro

Key words: growth hormone, chondrocytes of mandibular condyle, proliferation, type II collagen