经缝牵引成骨动物模型制备及早期组织学变化研究  

A study on the animal model preparation and early histological changes of trans-sutural distraction osteogenesis

作　　者：赵芝鹤 张于凡 张文慧 陈怡成 贾雪连 周善洛 申福定 杜宇轩 李云鹏 孔亮 ZHAO Zhihe;ZHANG Yufan;ZHANG Wenhui;CHEN Yicheng;JIA Xuelian;ZHOU Shanluo;SHEN Fuding;DU Yuxuan;LI Yunpeng;KONG Liang(State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration,National Clinical Research Center for Oral Diseases,Shaanxi Clinical Research Center for Oral Diseases,Department of Oral and Maxillofacial Surgery,The Third Hospital Affiliated of Air Force Military Medical University,710032 Xi'an,China)

机构地区：[1]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔疾病临床医学研究中心,空军军医大学第三附属医院口腔颌面外科,西安710032

出　　处：《实用口腔医学杂志》2024年第2期173-179,共7页Journal of Practical Stomatology

基　　金：陕西省重点研发计划(编号:2023-YBSF-112,2023-YBSF-433);陕西省卫生健康科研基金项目(编号:2022D032)。

摘　　要：目的:构建SD大鼠颅骨骨缝牵引成骨动物模型。方法:自主设计并制作了V型牵引装置,牵张宽度(mm)为5、4、3、2、1、0时施加的牵引力(N)分别为0、1.3、2.2、3.0、4.3和5.0。可满足5周龄SD大鼠的骨缝牵引需求。在12只SD大鼠颅骨矢状缝安放扩张器,术后1、3、5、7 d连续取材(n=3),通过HE、Masson染色检测牵引成骨区组织变化,Arg-1免疫荧光染色观察炎症水平,CD31与EMCN共染检测早期成血管情况。结果:V型牵引器可稳定制备颅骨骨缝牵引成骨模型,牵引7 d即完全达到预设宽度,有显著的新骨形成;Arg-1表达量递增,向骨边缘集中,与新骨形成区域相重叠;EMCN表达量逐渐递减,7 d时以CD31表达明显增加,标志血管基本成熟。结论:本研究成功建立稳定、有效的骨缝牵引动物模型,为研究其早期连续生理变化提供实验依据。Objective:To establish an animal model of trans-sutural distraction osteogenesis in SD rats.Methods:A self-designed V-shaped distraction device(distractor)was fabricated with the traction force(N)of 0,1.3,2.2,3.0,4.3 and 5.0 corresponding to the distraction length(mm)of 5,4,3,2,1 and 0 respectively,meeting the trans-sutural distraction osteogenesis requirements in skull of 5-week-old SD rats.The distractor was plased into the sagittal suture of 12 SD rats.Continuous sampling was conducted 1,3,5 and 7 days respectively(n=3)after operation.The tissue changes in the trans-sutural distraction area were observed by HE and Masson's trichrome staining.Inflammation levels were determined using Arg-1 immunofluorescence staining.The early angiogenesis was clarified through co-staining with CD31 and EMCN.Results:A stable trans-sutural distraction osteogenesis model was established,5 mm distraction osteogenesis width was observed completely within 7 days of distraction.Significant new bone formation was observed at 7 days after operation.Arg-1 expression increased and was concentrated at the bone margins,overlapping with the areas of new bone formation.EMCN expression gradually decreased,and by day 7 CD31 was predominant,indicating the basic maturation of blood vessels.Conclusion:This study successfully constructed a stable and effective trans-sutural distraction osteogenesis animal model,and provides an experimental basis for the investigation of its early continuous histological changes.

关 键 词：经缝牵引成骨 动物模型 早期变化 

分 类 号：R782.2[医药卫生—口腔医学] R-332[医药卫生—临床医学]