吉林大学学报(医学版) ›› 2013, Vol. 39 ›› Issue (2): 304-307.doi: 10.7694/jldxyxb20130225

• 基础研究 • 上一篇    下一篇

低强度超声对颅骨溶解模型小鼠磨损颗粒诱导的骨溶解效应的影响

刘 铭1,张 健1,陈婷梅2,陈文直3,姜 蓉4
   

  1. 1. 重庆医科大学附属第一医院骨科,重庆 400016;2.重庆医科大学检验系 临床检验诊断学教育部重点实验室,重庆 400016;3. 重庆医科大学附属第一医院海扶中心,重庆 400016;4. 重庆医科大学干细胞与组织工程研究室免疫组化室,重庆 400016
  • 收稿日期:2012-08-28 出版日期:2013-03-28 发布日期:2013-03-28
  • 通讯作者: 张 健(Tel:023-89011202,E-mail:68733235@sohu.com) E-mail:68733235@sohu.com
  • 作者简介:刘 铭(1976-),男,陕西省安康市人,主治医师,讲师,在读医学硕士 ,主要从事人工关节感染与松动方面的研究。
  • 基金资助:

    重庆市科技攻关计划项目资助课题(CSTC,2010AB5094)

Influence of low intensity ultrasound in bone dissolution induced
by polyethylene wear particles in skull dissolution  model  mice

LIU Ming1,ZHANG Jian1,CHEN Ting-mei2,CHEN Wen-zhi3,JIANG Rong4   

  1. 1.Department of Orthopedics,First Affiliated Hospital,Chongqing Medical University,Chongqing 400016,China;2.Key Laboratory of Clinical Laboratory Diagnostis,Ministry of Education,Department of Laboratory Medicine,Chongqing Medical University,Chongqing  400016,China;3.Sea Help Center,First Affiliated Hospital,Chongqing Medical University,Chongqing 400016,China;4.Department of Immunohistochemistry,Stem Cells and Tissue Engineering Laboratory,Chongqing Medical University,Chongqing  400016,China
  • Received:2012-08-28 Online:2013-03-28 Published:2013-03-28

摘要: 目的:探讨低强度超声在小鼠颅骨溶解模型中对破骨细胞增殖分化的干预,为临床治疗关节松动提供理论依据。方法:选择30只BALB/c小鼠,按随机数字表法分为空白对照组、颗粒组和超声组,每组10只。采用改良磨损颗粒法复制小鼠颅骨溶解模型,在术后15 d获取小鼠颅顶骨骨组织标本,HE染色观察炎细胞渗出量和骨溶解面积变化;扫描电镜检测骨片吸收陷窝面积百分比;抗酒石酸酸性磷酸酶染色(TRAP)观察破骨细胞增殖分化;免疫组织化学染色定位观察损伤骨组织中骨保护素(OPG)的表达变化。结果:HE染色,与空白对照组比较,颗粒组和超声组炎细胞渗出量和骨溶解面积明显增加(P<0.01);与颗粒组比较,超声组骨溶解面积明显降低(P<0.05),而2组炎细胞渗出量比较差异无统计学意义(P>0.05)。扫描电镜,超声组骨片吸收陷窝面积百分比显著低于颗粒组(P<0.01)。TRAP染色,超声组破骨细胞数量明显低于颗粒组(P<0.01)。免疫组织化学,超声组OPG阳性细胞数明显高于颗粒组及空白对照组(P<0.05)。结论:低强度超声能抑制小鼠颅骨溶解模型中破骨细胞的增殖分化,有效降低聚乙烯磨损颗粒所致的骨溶解效应,从而增强关节假体周围骨的密度和强度,降低关节松动的发生率。

关键词: 颅骨溶解, 低强度超声, 骨保护素, 磨损颗粒, 无菌松动, 小鼠

Abstract: Objective  To study the effect of low intensity ultrasound on osteoclast activity and osteolytic in the mouse skull dissolution model.Methods A total of 30 BALB/c mice were randomly divided into blank control group,grain group and ultrasound group,10 in each group.Improved wear particles were used to replicate mouse skull dissolution models,and the parietal bone samples of mice were obtained 15 d after operation.The number of inflammatory cells and osteolysis area were evaluated.A percentage of bone absorption lacuna area was detected by scanning electron microscope.The proliferation and differentiation of osteoclasts were observed by Tartrate-resistant acid  phosphatase(TRAP)   staining.The expression of osteoprotegerin (OPG) in damage bone tissues was observed by immunohistochemistry staining localization.Results The  HE staining results showed that  compared with blank control group,the exudation of inflammatory cells and osteolysis area  in  grain group and ultrasound group were increased significantly (P<0.01). Compared with grain group,the  osteolysis area in ultrasound group was decreased significantly (P<0.05);but the number of inflammatory cells in  two groups had no significant difference (P>0.05).The scanning electron microscope results showed  that the percentage of bone absorption lacuna area  in  ultrasound group was significantly lower than that in  grain group (P<0.01).The TRAP staining results showed that the number of osteoclasts in ultrasound group was significantly lower than that in grain group (P<0.01). The immunohistochemistry results showed that the number of  OPG positive cells in ultrasound group was significantly higher than those in grain group and blank control group (P<0.05).Conclusion Low intensity ultrasound can inhibit the proliferation and differentiation of osteoclasts in mouse skull dissolution model,and effectively reduce the  bone dissolution  induced by polyethylene wear particles.So the density and strength of bone around joint prosthetic are enhanced,and the incidence of joint mobilization is reduced.

Key words: skull dissolution, low intensity ultrasound, osteoprotegerin, wear particles, aseptic loosening, mice

中图分类号: 

  • R-332