中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (49): 7885-7889.doi: 10.3969/j.issn.2095-4344.2015.49.003

• 骨及关节损伤动物模型 Animal models of bone and joint injuries • 上一篇    下一篇

兔股骨慢性骨髓炎模型的制作

陈金水1,廖肇山2,林松庆1,卢桥平2,王本海1,黄文祺2,林永炀2,张慧浩2   

  1. 1解放军南京军区福州总医院骨一科,福建省福州市 350025; 2福建中医药大学骨伤学院,福建省福州市 350108)
  • 收稿日期:2015-09-07 出版日期:2015-11-30 发布日期:2015-11-30
  • 通讯作者: 林松庆,硕士,副主任医师,解放军南京军区福州总医院骨一科,福建省福州市 350025
  • 作者简介:陈金水,男,1979年生,福建省漳州市人,汉族,2014年解放军第二军医大学毕业,博士,主治医师,主要从事骨感染、脊柱外科等研究。
  • 基金资助:

    2012年南京军区医药卫生科研基金课题(12MA103);福建省自然科学基金项目(2013J01344)

Establishment of rabbit models of chronic femoral osteomyelitis

Chen Jin-shui1, Liao Zhao-shan2, Lin Song-qing1, Lu Qiao-ping2, Wang Ben-hai1, Huang Wen-qi2, Lin Yong-yang2, Zhang Hui-hao2   

  1. 1First Department of Orthopedics, Fuzhou General Hospital of Nanjing Military Command, Fuzhou 350025, Fujian Province, China; 2College of Osteopathy, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, Fujian Province, China  
  • Received:2015-09-07 Online:2015-11-30 Published:2015-11-30
  • Contact: Lin Song-qing, Master, Associate chief physician, First Department of Orthopedics, Fuzhou General Hospital of Nanjing Military Command, Fuzhou 350025, Fujian Province, China
  • About author:Chen Jin-shui, M.D., Attending physician, First Department of Orthopedics, Fuzhou General Hospital of Nanjing Military Command, Fuzhou 350025, Fujian Province, China
  • Supported by:

    Medical and Health Scientific Research Foundation of Nanjing Military Area Command in 2012, China, No. 12MA103; the Natural Science Foundation of Fujian Province of China, No. 2013J01344

摘要:

背景:建立有效稳定的慢性骨髓炎动物模型是治疗慢性骨髓炎实验研究的基础。以往慢性骨髓炎模型常常建模成功率低,模型不稳定。
目的:探讨运用金黄色葡萄球菌制备兔股骨慢性骨髓炎动物模型的实验方法。
方法:健康成年新西兰兔40只,麻醉成功后在股骨大转子下2 cm剥离局部骨膜后用3.5 mm钻头的电钻,在该处钻2个纵向相连、部分重叠的骨洞,直达髓腔,孔洞用无菌骨蜡密封,实验组(20只)向髓腔内注射0.1 mL的5%鱼肝油酸钠,再向髓腔内注射0.5 mL的金黄色葡萄球菌液(1×106 cfu);对照组(20只)则向髓腔内注射0.1 mL的5%鱼肝油酸钠,再向髓腔内注射0.5 mL的生理盐水。4周后观察,兔感染部位大体观察、体质量、体温、X射线放射检查、细菌培养及改良Norden骨髓炎评价动物模型的制备情况。
结果与结论:实验组20只兔接种细菌1周后开始出现体温升高、食欲减退、跛行等症状,接种局部红肿;2周以后13只兔伤口局部出现渗液、流脓;4周后19只兔均有局部红肿、流脓和体温身高等症状;比对照组兔体温明显升高,体质量明显减轻;改良Norden骨髓炎评分也高于对照组;14只兔分泌物细菌培养试验阳性,结果显示均为金黄色葡萄球菌感染。造模成功率为95%。提示使用金黄色葡萄球菌和鱼肝油酸钠骨髓腔注入的方法,可稳定可靠地制备出兔股骨慢性骨髓炎动物模型,是慢性骨髓炎模型制作的可靠方法。
 

关键词: 实验动物模型, 骨及关节损伤动物模型, 慢性骨髓炎, 金黄色葡萄球菌, 模型, 兔, 福建省自然科学基金

Abstract:

BACKGROUND: Establishment of an effective and stable animal model of chronic osteomyelitis is the basis of the experimental studies on treatment of chronic osteomyelitis. Previous chronic femoral osteomyelitis models are always instable and therefore not successful.
OBJECTIVE: To investigate the experimental method of establishing rabbit models of chronic femoral osteomyelitis with Staphylococcus aureus .
METHODS: Forty healthy adult New Zealand rabbits were anesthetized. After stripping periosteum located at 2 cm below the greater trochanter, two bone holes till the medullary cavity, which were connected longitudinally and overlapped partially, were drilled with a drill of 3.5 mm bore bit. Holes were sealed with sterile bone wax. Twenty rabbits from the experimental group were intramedullarily injected first with 5% sodium morrhuate (0.1mL), and then with 0.5 mL Staphylococcus aureus (1×106 cfu). Twenty rabbits from the control group were intramedullarily injected first with 5% sodium morrhuate (0.1 mL) and then with 0.5 mL normal saline. After 4 weeks, infected regions were observed, rabbit body weight and body temperature were measured and X-ray radiographs of the damaged regions were taken, bacterial culture was performed and femoral osteomyelitis lesion degree was 
evaluated using the modified osteomyelitis scoring system.
RESULTS AND CONCLUSION: After 1 week of bacterial inoculation, 20 rabbits from the experimental group began to  present the symptoms of increased body temperature, loss of appetite, lameness, vaccination site reaction. After 2 weeks, exudate or pus discharge in the local area were present in 13 rabbits. After 4 weeks, 19 rabbits all presented the symptoms of local swelling, pus discharge and fever. At this time period, rabbit body temperature was noticeabley increased, body weight was remarkably decreased, and modified Norden osteomyelitis scores were obviously higher in the experimental group compared with the control group. The secretion cultures were positive for Staphylococcus aureus in 14 rabbits. The success rate of modeling was 95%. These results suggest that stable and reliable rabbit models of chronic femoral osteomyelitis can be prepared by injection with Staphylococcus aureus and sodium morrhuate into marrow cavity. 
 

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