Acetaldehyde increases the activity and gene expression of urokinase type plasminogen activator in a hepatic stellate cell line

被引:7
|
作者
Rodríguez-Fragoso, L
Alvarez, R
Reyes-Esparza, JA
Garcés, ME
机构
[1] Univ Panamer, Escuela Med, Mexico City 03920, DF, Mexico
[2] Inst Nacl Nutr Salvador Zubiran, Dept Gastroenterol, Mexico City 14000, DF, Mexico
[3] Inst Natl Cancerol, Div Invest Basica, Mexico City 14000, DF, Mexico
关键词
hepatic stellate cells; liver fibrosis; proteolysis;
D O I
10.1016/S0300-483X(99)00064-5
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
The aim of this study was to investigate the effect of acetaldehyde on the activity and expression of urokinase type plasminogen activator gene in a clone of hepatic stellate cells. CFSC-2G cells showed typical morphological changes of the stellate cell activation, which were accompanied by an increase in the amount of collagen with all doses of acetaldehyde used. The treatment of the cells with doses of 100 and 175 mu mol/1 acetaldehyde, produced an increase in the urokinase type plasminogen activator activity not only in the cell extract, but also in conditioned medium. However, the use of higher doses of acetaldehyde (250 and 350 mu mol/1) produced an inhibitory effect on the urokinase type plasminogen activator activity. In contrast, the higher urokinase type plasminogen activator gene expression was observed with doses of 175, 250, and 350 mu mol/1. Our results shown that acetaldehyde induced changes in synthesis, release, and expression of urokinase type plasminogen activator in CFSC-2G cells. Those findings suggest that the alterations in the synthesis and expression of the urokinase type plasminogen activator might be another event associated to the activation of hepatic stellate cell after exposure to hepatotoxic agents like-acetaldehyde. The role of urokinase type plasminogen activator in fibrogenesis was analyzed. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:1 / 11
页数:11
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