南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (6): 797–803.

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 缓释碱性成纤维细胞生长因子预防胆管损伤修复术后
胆管瘫痕形成的实验研究*

 陶亮1,李强1** ,任吴祯1,戴建武2,丁义涛1**
  

  • 出版日期:2015-07-31 发布日期:2015-07-31
  • 作者简介: (1.南京大学医学院附属鼓楼医院肝胆外科,南京,210008:2.中国科学院遗传与发育生物学研究所,北京,100109)
  • 基金资助:
     南京市医学科技发展一般课题基金(YKK11087)

 The prevention of bile duct scar formation after bile duct injury repair
by using sustained-release basic fibroblast growth factor

 Tao Liang1,Li Qiang1,Ren Hao-Zhen1,Dai Jian Wu2,Ding Yi-Tao1   

  • Online:2015-07-31 Published:2015-07-31
  • About author: (1. Department of Hepatobiliary Surgery,The Affiliated Drum Zower Hospital of Nanjing University Medical School
    Nanjing,210008,China;2. State Key Laboratory of Molecular Developmental Biology,lnstitute of Genetics
    and Developmental Biology,Chinese Academy of Sciences,Beijing, 100190,China)

摘要:  探讨缓释碱性成纤维细胞生长因子(basic fibroblast growth factor, bFGF)对胆管损伤修复术后胆管癖痕形成的预防作用.通过分组实验,制备猪胆管部分缺损模型,运用加载缓释bFGF胶原膜及空白胶原膜修复缺损.比较术后1、2、3个月的肝功能变化并用病理切片和兔疫组化染色比较胆管愈合、
胶原增生及肌成纤维母细胞(myofibroblast, MFB)的表达情况.术后6个月胆道造影观察狭窄形成情况.结果显示:经缓释bFGF治疗后,胆管未出现癖痕性狭窄.与空白胶原膜组相比,胆汁淤积酶学指标中GGT和TBA显著降低,免疫组化提示MFY的表达显著降低,胶原排列及结构更接近于正常胆管.证明运用缓释bFGF胶原膜治疗胆管缺损可通过加速胆管愈合及下调MFB的表达有效的预防胆管损伤修复术后胆管瘫痕的形成.

Abstract:  The over-healing is a major problem in the process of bile duct injury repair, It will cause malignant out comes because of stricture by scar formation, It is necessary to promote rapid-healing。[the injury to prevent scar formation, In our previous work,we produced a sustained-release basic fibroblast growth factor(bFUF). After adding to collagen membrane it could not only retain the activity of growth factor but also obtain the ability of sustained and site-targeting.ln our study,we used this material to repair a 2. 0 X 0. 5cm elliptical defect in the bile duct of pigs,and blank collagen membranes with same size were used as control. Before being sacrificed,the alanine aminotransferase (ALT),y-glutamyltransferase(GGT),direct bilirubin(DBil),and total bile acid(TBA) in both groups wrere detected and compared. After being sacrificed,the H & E staining and Masson’s trichrome staining of the neo-bile duct and the immunohistochemical staining of crSMA in both groups was observed and counted,the anti-crSMA antibody was used to mark the myofibroblast(MFB)which is an important factor in the process of scar formation.The cholangiog- raphy was performed under fluoroscopic guidance by cholecystostomy to evaluate if there was any evidence of strir
ture formation at 6 months. Hg-E staining showed the faster healing rate of nco-bile duct and less scar formation af- to treated by sustained-release bFUF, and the thickness of nco-bile duct was similar with normal bile duct at 3 weeks. Compared with control group,thc levels of GGT and TBA were significant low at all time points;immunohis- tochemical staining showed the expression of MFB was also significant low at all time points.The structure of colla- gen fibers was similar with the normal bile duct as showed by Masson’s trichrome staining, It is proved that using a sustained-release bFGF could effectively prevent postoperative bile duct scar formation by accelerating the healing rate of bile duct and dowrrregulating the expression of MFB.

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