| 간경변증에서 섬유화 정도에 따른 Ito 세포 활성과 간세포 증식능의 변화 ( Ito Cell Activity and Hepatocyte Proliferation Activity According to Collagen Content in Liver Cirrhosis ) |
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| Ito Cell Activity and Hepatocyte Proliferation Activity According to Collagen Content in Liver Cirrhosis |
| Kee Taek Jang, Young Mi Jung, In Kyoung Lim, Yun Sil Lee, Nan Kyung Myung, Mi Ran Kim, Min Jae Lee and Ja June Jang |
| Department of Pathology, Seoul National University College of Medicine, Department of Biochemistry, Ajou University School of Medcine,1 Laboratory of Radiation Effect, Korea Cancer Center Hospital2 |
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| ABSTRACT |
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Background
/ Aims : Liver cirrhosis is an end-stage liver disease. Ito cell is known to have central role in fibrogenes is of liver cirrhosis. But collagen content and Ito cell activity in liver cirr hosis have received little attention. So Ito cell activity and hepatocyte proliferation activity according to collagen content was investigated. WAF-1 and c- met were studied to evaluate the effect of cell cycle. Methods : We analyzed 56 cases of liver cirrhosis ( viral:41, biliary:11, alcoholic:2, Wilson' s disease:2). Collagen content was measured by spectrophot ometry. Ito cell activity and prolifer ation index was measured by - SMA and Ki- 67 immunohistochemistry. Results : In viral cirrhosis , high collagen group showed increased Ito cell activity compared to low collagen group. There was no difference in hepatocyte prolifer ation activity bet ween high and low collagen group in viral cirrhosis . In biliary cirrhos is , high collagen group showed increased Ito cell activity in septal zones compared to low collagen group. WAF- 1and c- met were negative in most of cases. Conclusion : Collagen content of liver cirrhosis is closely related to increment of activated Ito cells . Ito cell activity was prominent in septal zones than in parenchymal areas of viral cirrhosis and that was only significant in septal zones of biliary cirrhosis. There is no correlation bet ween collagen content and hepatocyte proliferation activity. (Korean J Hepatol 1998;4:254 263) |
| KeyWords:
Cirrhosis, Collagen, Ito cell, a-SMA, Proliferation activity |
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