中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (28): 4429-4434.doi: 10.12307/2023.693

• 组织构建实验造模 experimental modeling in tissue construction •    下一篇

兔胫骨钻骨孔径对骨髓炎模型的影响

邱晓明1,李继东1,康  冠1,乔永杰2,李文波2,冯强生2,甄  平2,蓝  旭1   

  1. 1甘肃省人民医院,甘肃省兰州市   730000;2联勤保障部第940医院,甘肃省兰州市   730000
  • 收稿日期:2022-06-28 接受日期:2022-10-18 出版日期:2023-10-08 发布日期:2023-01-29
  • 通讯作者: 蓝旭,博士,主任医师,甘肃省人民医院,甘肃省兰州市 730000
  • 作者简介:邱晓明,男,1986年生,2018年兰州大学毕业,硕士,主治医师,主要从事骨感染与骨组织工程方面的研究。
  • 基金资助:
    甘肃省自然基金项目(20JR10RA411),项目负责人:邱晓明

Size of the borehole affects rabbit tibial osteomyelitis models

Qiu Xiaoming1, Li Jidong1, Kang Guan1, Qiao Yongjie2, Li Wenbo2, Feng Qiangsheng2, Zhen Ping2, Lan Xu1   

  1. 1Gansu Provincial Hospital, Lanzhou 730000, Gansu Province, China; 2The 940th Hospital of Logistics Support Force of PLA, Lanzhou 730000, Gansu Province, China
  • Received:2022-06-28 Accepted:2022-10-18 Online:2023-10-08 Published:2023-01-29
  • Contact: Lan Xu, MD, Chief physician, Gansu Provincial Hospital, Lanzhou 730000, Gansu Province, China
  • About author:Qiu Xiaoming, Master, Attending physician, Gansu Provincial Hospital, Lanzhou 730000, Gansu Province, China
  • Supported by:
    Gansu Provincial Natural Fund Project, No. 20JR10RA411 (to QXM)

摘要:

文题释义:

骨髓炎:常由血液中或者临近软组织中微生物引起的骨髓、骨皮质及骨膜的感染炎症反应。临床上常反复发作,需多次手术治疗,甚至截肢、残疾、危及生命可能。
急性血源性骨髓炎:多发生于儿童及青少年,起始于长骨的干骺端,成团的细菌在此处停滞繁殖。病灶形成脓肿后周围为骨质,引流不畅,多有严重的毒血症表现,以后脓肿扩大依局部阻力大小而向髓腔、骨膜下、关节腔不同方向蔓延,常因感染留有肢体生长障碍、关节功能障碍等后遗症。
慢性硬化性骨髓炎:多见于青壮年,多侵犯长骨(如股骨、胫腓骨),病程缓慢,一般认为是致病菌毒力较低或人体抵抗力较强并长期感染所致。表现为骨的进行性、广泛性和硬化性炎症,髓腔变细,骨干变粗,无脓肿、死骨和瘘管。

背景:直到现在骨髓炎仍然是临床骨科医生需要解决的难题,开发理想的骨髓炎模型对于新治疗方法的评价非常重要。
目的:稳定有效地制备出适用于不同实验需求的兔胫骨骨髓炎模型。
方法:将25只新西兰大白兔随机分成3组,小孔组10只、大孔组10只、假手术组5只。小孔组采用小孔法,用1 mm钻头在兔胫骨中上段钻孔,注入金黄色葡萄球菌(2×106 cfu)悬浮液100 μL;大孔组采用大孔法,用5 mm钻头在兔胫骨中上段钻孔,其余操作同小孔组;假手术组切开后缝合,不进行钻孔及细菌注射。术后1个月内进行一般状态、体温、X射线片、CT、组织病理学观察及血清C-反应蛋白、降钙素原质量浓度测定。

结果与结论:①与假手术组相比,术后小孔组、大孔组兔体温和血清C-反应蛋白质量浓度均呈现不同程度升高;②钼靶X射线片及CT检查:小孔组影像学表现为全骨髓腔感染,大孔组表现为局部骨缺损感染;③提示在制备兔胫骨骨髓炎模型时,钻孔大小不同可导致不同的胫骨感染后果,使用5 mm钻孔的模型可能适用于局部抗感染材料效能的研究,使用1 mm钻孔的模型可能适用于全身抗生素药物治疗骨髓炎效果的评价。

https://orcid.org/0000-0001-8302-0821(邱晓明) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 胫骨, 骨髓炎, 钻孔, 金黄色葡萄球菌, 动物模型

Abstract: BACKGROUND: Osteomyelitis remains a challenge for clinical orthopedic surgeons to address until now, and the development of ideal models of osteomyelitis was very important for the evaluation of new treatments.
OBJECTIVE: To stably and effectively establish a rabbit tibia model of osteomyelitis, suitable for different experimental requirements. 
METHODS: A total of 25 New Zealand white rabbits were randomly divided into three animal model groups: pore group (n=10), macropore group (n=10) and sham operation group (n=5). In the pore group, a 1 mm drill was used to drill holes in the tibia and the 100 μL Staphylococcus aureus (2×106 cfu) was injected. In the macropore group, the same method was used but the drill holes were 5 mm. The sham operation group was cut and sutured without drilling or injecting bacteria. The general state, body temperature, X-ray, CT, histopathological observation, serum C-reactive protein and procalcitonin mass concentration were measured within 1 month after surgery.
RESULTS AND CONCLUSION: Compared with the sham operation group, the body temperature and serum C-reactive protein mass concentration of rabbits in the pore group and the macropore group increased in varying degrees. Molybdenum target X-ray film and CT examination: The imaging manifestations of the pore group were whole marrow cavity infection, while the macropore group was local bone defect infection. It is suggested that in the preparation of rabbit models of tibial osteomyelitis, the size of the borehole may lead to different consequences of tibial infection. The 5 mm borehole model may be suitable for the study of the efficacy of local anti-infection materials, and the 1 mm borehole model may be suitable for the evaluation of the efficacy of systemic antibiotic drug treatment of osteomyelitis.

Key words: tibia, osteomyelitis, drilling, Staphylococcus aureus, animal model

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