Abstract
Objective To investigate the expression of MCP-1 and TGF-β1 in early stage of ob-structive jaundice and explore its relation to liver correlated injury indexes in rats. Methods Fifty male Wistar rats were randomized into the control group, sham-operated group and biliary obstruction group. On day 10, serum ALT and BIL-T levels were determined in inferior caval blood and hepatic MDA was estimated in liver homogenates. Meanwhile, serum TGF-β1 level was measured by ELISA and the MCP-1 infiltration determined with immunohistochemistry. Results Serum ALT and BIL-T values were elevated. Meanwhile, the liver MDA content was increased. The positive expression of MCP-1 was augmented and serum TGF-β1 was over-expressed in the early stage after obstructive jaun-dice in rats. The hepatic MCP-1 expression had a positive correlation with the elevated ALT, BIL-T and MDA levels. However, the serum TGF-β1 content only had a positive correlation with ALT and BIL-T. Conclution Hepatic MCP-1 and serum TGF-β1 expression in the early stage after biliary tract obstruction is related to liver injury and extrahepatic cholestasis. Meanwhile, the hepatic MCP-1 ex-pression is correlated with hepatic oxidation stress. They have an important significance in liver injury in rats during the early period of obstructive jaundice. Key words: Cholestasis; MCP-1; TGF-β1
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