Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (53): 9196-9202.doi: 10.3969/j.issn.2095-4344.2013.53.016

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Regeneration and structural changes of mouse cirrhotic liver after partial hepatectomy

Zheng Xiao-jun, Luo Qian-xin, Chen Qian-qi, Xiong Xi-feng, Liu Yu-rong, Ma Ning-fang   

  1. Department of Histology and Embryology, School of Basic Sciences, Guangzhou Medical University, Guangzhou  510182,Guangdong Province, China
  • Revised:2013-09-19 Online:2013-12-31 Published:2013-12-31
  • Contact: Ma Ning-fang, M.D., Professor, Department of Histology and Embryology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 510182, Guangdong Province, China nfma@gzhmc.edu.cn
  • About author:Zheng Xiao-jun, Department of Histology and Embryology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 510182, Guangdong Province, China 383271008@qq.com
  • Supported by:

    the College Students’ Innovative Experimental Projects of Guangdong Province (2011)*

Abstract:

BACKGROUND: Liver possesses a powerful regenerative capacity. It is reported that the most patients suffering from hepatocelluler carcinoma are accompanied with liver cirrhosis. The liver weight can be gradually restored after tumor resection, which indicated a regenerative potential of cirrhosis liver.

OBJECTIVE:To try to use partial hepatectomy to induce proliferation of cells with regeneration capacity in cirrhotic liver of mice, and to observe the structural changes of regenerated liver.

METHODS: The liver cirrhosis model of mouse was produced by injecting CCl4 liquid subcutaneously. The mice with liver cirrhosis were subjected to partial hepatectomy. The residual liver was dissected and weighted at 1, 3, 5, 7, 10, 14 and 21 days after partial hepatectomy. The structural changes of regenerating livers were compared after partial hepatectomy at various time points. Liver regeneration rate was evaluated. Immunohistochemical method was used to analyze desmin and alpha-smooth muscle actin expression in the hepatic satellite cells. The 5-bromo-2-deoxyuridine incorporation labeling method was used to exhibit and localize the regenerating cells.

RESULTS AND CONCLUSION:The liver regeneration rates of the mice with liver cirrhosis at the 1, 3, 5, 7, 14, 21 days after the partial hepatectomy were 6.58%, 22.03%, 21.39%, 29.05%, 45.22%, and 50.98% respectively. The results of hematoxylin-eosin staining as well as Masson staining showed the pathological early cirrhosis features of the liver after CCl4 treatment for 8 weeks and the structure of residual livers improved gradually after partial hepatectomy. Immunohistochemical results demonstrated that the expression of desmin in regenerating liver was decreased at 1 day after partial hepatectomy, but showed an uptrend from 3 to 14 days and decreased at 21 days. The expression of alpha-smooth muscle actin decreased gradually at every time point after partialhepatectomy. The 5-bromo-2- deoxyuridine-positive nucleus localized in hepatocytes at 1-7 days and mainly localized in hepatic sinusoid endothelium and intracavity at 14-21 days after partial hepatectomy. The regenerative reaction of mouse cirrhotic liver appeared at 3 days after partial hepatectomy and the structure of normal regenerating liver will be improved and restored gradually.



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


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Key words:  liver cirrhosis, partial hepatectomy, liver regeneration, desmin, actins

CLC Number: