中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (20): 3205-3210.doi: 10.3969/j.issn.2095-4344.2015.20.017

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

同种异体气管原位移植模型的改良与观察

张运曾1,王  成1,金  锋1,陈  昶2,高  文3   

  1. 1山东省胸科医院胸外科,山东省济南市  250013;2上海市肺科医院胸外科,上海市 200433;3上海市华东医院胸外科,上海市  200040
  • 出版日期:2015-05-14 发布日期:2015-05-14
  • 通讯作者: 王成,硕士,主任医师,山东省胸科医院胸外科,山东省济南市 250013
  • 作者简介:张运曾,男,1981年生,汉族,山东省滕州市人,2008年苏州大学毕业,硕士,主治医师,主要从事气管移植的基础和临床研究。
  • 基金资助:

    山东省自然科学基金(ZR2010HM045)

Improvement and observation of an orthotopic allogeneic tracheal transplantation model

Zhang Yun-zeng1, Wang Cheng1, Jin Feng1, Chen Chang2, Gao Wen3   

  1. 1Department of Thoracic Surgery, Shandong Provincial Chest Hospital, Jinan 250013, Shandong Province, China; 2Department of Thoracic Surgery, Shang Hai Pulmonary Hospital, Shanghai 200433, China; 3Department of Thoracic Surgery, Hua Dong Hospital, Shanghai 200040, China
  • Online:2015-05-14 Published:2015-05-14
  • Contact: Wang Cheng, Master, Chief physician, Department of Thoracic Surgery, Shandong Provincial Chest Hospital, Jinan 250013, Shandong Province, China
  • About author:Zhang Yun-zeng, Master, Attending physician, Department of Thoracic Surgery, Shandong Provincial Chest Hospital, Jinan 250013, Shandong Province, China
  • Supported by:

    the Natural Science Foundation of Shandong Province, No. ZR2010HM045

摘要:

背景:气管上皮的再生能有效抑制黏膜下组织增生和管腔闭塞的发生,有研究表明通气能够加快气管上皮的再生。
目的:建立并改良同种异体小鼠原位气管移植模型,进一步观察通气对供体气管的影响。
方法:C57BL/6小鼠的气管作为供体,BALB/c小鼠作为受体。实验分2组,实验组取2个供体气管膜部纵行剖开,缝合成一扩大管腔的气管原位植入受体气管;对照组供体气管原位植入受体气管,28 d后获取标本进行检测。
结果与结论:苏木精-伊红染色显示,与对照组相比,实验组气管管腔内上皮层可见分化良好的纤毛上皮,亦可见少量无纤毛的单层或复层扁平上皮,黏膜下轻度纤维组织增生和炎细胞浸润。形态学定量分析结果示,实验组在气管上皮中纤毛上皮的比例高于对照组(P < 0.05),实验组固有层与软骨的比值,固有膜纤维组织的面积、淋巴细胞浸润度均低于对照组(P < 0.05)。免疫组织化学染色显示,两组移植气管上皮均为为受体上皮表型。结果证实,实验成功建立了改良的小鼠原位气管移植模型,移植段气管通气量增加能够加快气管上皮分化,分化良好的气管上皮可以更好的抑制成纤维细胞的增殖。

关键词: 组织构建, 组织工程, 通气, 原位气管移植, 气道上皮, 再上皮化, 模型, 山东省自然科学基金

Abstract:

BACKGROUND: Airway epithelial regeneration can effectively inhibit submucosal hyperblastosis and the occurrence of obliteration. Studies demonstrated that ventilation could accelerate the regeneration of airway epithelium.
OBJECTIVE: To establish and improve an orthotopic tracheal transplantation model and to further observe the effects of ventilation on trachea in allogeneic mice.
METHODS: C57BL/6 mouse’s tracheal served as donor, and BALB/c mouse’s tracheal as recipient. This experiment contained two groups. In the experimental group, the membranous part of trachea was longitudinally dissected in two donors and sutured into an enlarged trachea, which was implanted in the recipient. In the control group, donor’s trachea was implanted into the recipient in situ. Samples were obtained and detected at 28 days after surgery.
RESULTS AND CONCLUSION: Hematoxylin-eosin staining results demonstrated that compared with the control group, well-differentiated ciliated epithelium was visible in the epithelial lamina of tracheal lumen, accompanying a few non-ciliated single or stratified squamous epithelium, mild submucosal fibrosis and inflammatory cell infiltration. Morphological analysis revealed that ciliated epithelial proportion in the experimental group was higher 
than in the control group (P < 0.05). The ratio of lamina propria to the tracheal cartilage, submucous fibrous tissue area and the degree of lymphocyte infiltration were lower in the experimental group than in the control group (P < 0.05). Immunohistochemical staining demonstrated that the transplanted tracheal epithelium in both groups was recipient epithelial phenotype. Results verified that a modified orthotopic tracheal transplantation model was successfully established. The increased ventilation of the tracheal allografts can accelerate the differentiation of tracheal epithelium. The well-differentiated airway epithelium inhibited the proliferation of fibroblast.

Key words: Tissue Engineering, Pulmonary Ventilation, Trachea, Epithelium

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