J4

• 基础研究 • 上一篇    下一篇

Ⅱ型碳酸酐酶对破骨细胞性骨吸收的影响

李建军1,景元海,王 宏1,王 玲2,刘玉槐3,徐莘香1*   

  1. 1. 吉林大学第一医院骨科,吉林 长春 130021;2. 吉林大学基础医学院分子生物学教研室,吉林 长春130021;3. 吉林大学中日联谊医院骨科,吉林 长春130031
  • 收稿日期:2003-09-12 修回日期:1900-01-01 出版日期:2004-01-28 发布日期:2004-01-28
  • 通讯作者: 徐莘香

Effects of carbonic anhydrase Ⅱ on osteoclastic bone resorption

LI Jian-jun1, JING Yuan-hai, WANG Hong1, WANG Ling2, LIU Yu-huai3,, XU Xin-xiang1*   

  1. 1. Department of Orthopaedics, First Hospital, Jilin University, Changchun 130021, China;2. Department of Molecular Biology, School of Basic Medical Sciences, Jilin University,Changchun 130021, China;3. Department of Orthopaedics, China-Japan Union Hospital, Jilin University,Changchun 130031, China
  • Received:2003-09-12 Revised:1900-01-01 Online:2004-01-28 Published:2004-01-28
  • Contact: XU Xin-xiang

摘要: 目的:研究破骨细胞分泌的Ⅱ型碳酸酐酶对骨吸收过程的影响。 方法:由1日龄SD大鼠四肢长骨分离破骨细胞,并接种于象牙骨片上共同培养,在培养液中分别加入不同浓度的Ⅱ型碳酸酐酶阻断剂乙酰唑胺,在第3天和第9天时观察破骨细胞骨吸收能力,以证实Ⅱ型碳酸酐酶对破骨细胞性骨吸收的影响。 结果:10-6 mol•L-1乙酰唑胺使骨吸收陷窝数和吸收面积均显著减少,浓度为10-8 mol•L-1时只对骨吸收面积有显著抑制作用。 结论:Ⅱ型碳酸酐酶通过调整破骨细胞内pH值,影响破骨细胞的分化、成熟及活化进而影响骨吸收。

关键词: 药理学, 破骨细胞, 药物作用, 乙酰唑胺, 药理学, 骨吸收

Abstract: Objective To study the effects of carbonic anhydrase Ⅱ produced by osteoclasts on bone resorption process. Methods The osteoclasts were isolated from long bones of one-day-old SD rats and seeded in ivory bones slices. Carbonic anhydrase Ⅱ inhibitor-acetazolamide of different concentrations were added to culture media. Changes of the bone resorption ability of osteoclasts were observed in 3rd day and 9th day to confirm the effects of carbonic anhydrase Ⅱ on osteoclastic bone resorption. Results Both the pit numbers and the pit areas were significantly inhibited by acetazolamide at the concentration of 10-6 mol•L-1, while 10-8 mol•L-1 acetazolamide inhibited mainly the pit areas. Conclusion Carbonic anhydrase Ⅱ can play a major role in osteoclast differentiation, maturity and activation by effecting the steady state intracellular pH. Thus, it may affect the bone resorption.

Key words: pharmacology, osteoclasts, drug effects, acetazolamide, pharmacology, bone resorption

中图分类号: 

  • R336