中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (5): 13-301.

• 论著 • 上一篇    下一篇

日本血吸虫病小鼠肝纤维化过程中VI型胶原的表达变化

施光峰,徐肇玥,翁心华,朱运松,马瑾瑜
  

  1. 1 上海医科大学华山医院热带病研究室 上海 2000402 上海医科大学分子遗传研究室 上海 200323 上海医科大学病理学教研室 上海 200032
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-10-30 发布日期:1999-10-30

DYNAMIC CHANGES IN THE EXPRESSION OF TYPE VI COLLAGEN IN MICE WITH SCHISTOSOMAL LIVER FIBROSIS 

SHI Guangfeng 1;XU Zhaoyue 1;WENG Xinhua 1;ZHU Yunsong 2;MA Jinyu 3   

  1. 1 Research Center of Tropical Medicine;Huashan Hospital;Shanghai Medical University;Shanghai 200040 2 Department of Molecular Genetics;Shanghai Medical university, Shang hai 2000323 Department of Pathology, Shang hai Medical University, Shang hai 200032
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-10-30 Published:1999-10-30

摘要:   目的:阐明血吸虫病肝纤维化时肝脏Ⅵ型前胶原m RNA表达和胶原含量的变化。方法:采用Northern核酸分子杂交和免疫组化技术。结果:小鼠感染后8 wk 时,肝内α1(Ⅵ)前胶原m RNA的表达量显著增加,10 w k时,其表达值达高峰,12~16 w k,略有下降,但直至20 wk 仍维持在较高水平。免疫组化染色显示,肝内Ⅵ型胶原在感染后8 wk 时出现于中央静脉周围和肝窦壁,10 w k 时,在肝组织内继续增多,12 w k 时虫卵肉芽肿内明显着色,16 w k 时,其含量达高峰,20 wk 时,广泛分布于汇管区、虫卵肉芽肿内及其周围,并形成致密的网络间隔。结论:血吸虫病肝纤维化形成过程中肝脏α1(Ⅵ)前胶原m RNA 表达和胶原含量均有显著增加,表明Ⅵ型胶原的检测对血吸虫病肝纤维化的评估可能有重要价值

关键词: 血吸虫病, 肝纤维化, Ⅵ型胶原, α1(Ⅵ)前胶原mRNA

Abstract:  AIM:To clarify the dynamic changes in type Ⅵ procollagen mRNA expression and collagen content in mice with schistosomal liver fibrosis.METHODS:Northern blot hybridization and immunohistochemical technique.RESULTS:The expression of α1(Ⅵ) procollagen mRNA measured by Northern blot hybridization in the liver of schistosome infected mice was elevated significantly at 8 wk post infection,peaked at 10 wk pi, slightly decreased at 12~16 wk pi,and sustained at high levels until 20 wk pi. Immunohistochemical assay revealed that the staining pattern of type Ⅵ collagen first appeared in the walls of central veins and liver sinusoids at 8 wk pi, then extended gradually to the egg granuloma and the portal tract,within and surrounding the egg granuloma to form dense reticular septum at the 12,16 and 20 wk pi, respectively.The Ⅵ collagen content as indicated by the intensity of stain peaked at 16 wk pi. CONCLUSION:Both the expression of α1(Ⅵ) procollagen and the content of collagen Ⅵ were significantly increased in the liver of mice with early schistosomal fibrosis,suggesting that the type Ⅵ collagen detection might be of importance for evaluating the intensity of schistosomal liver fibrosis.

Key words: Schistosomiasis, liver fibrosis, type Ⅵ collagen, α1(Ⅵ) procollagen mRNA