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Effects of spironolactone on rat liver fibrosis and expression of transforming growth factor β1 and tissue inhibitor of metalloproteinase-1
Xin Huang, Gang Zhu, Lei Wang
Xin Huang, Gang Zhu, Lei Wang, Department of Gastroenterology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China
Correspondence to: Xin Huang, Department of Gastroenterology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China. huangx201@sina.com.cn
Received: March 26, 2004 Revised: April 1, 2004 Accepted: April 15, 2004 Published online: July 15, 2004
AIM: To identify the effects of spironolactone on expressions of transforming growth factor β1 and tissue inhibitor of metalloproteinase-1 and to evaluate the curative effect of spironolactone.
METHODS: Thirty four male SD rats were randomly divided into 3 groups: Hepatic fibrosis model group: the rats were injected with 400 mL/L CCl4 3 mL/kg subcutaneously two times a week; Spironolactone group: the rats were injected with 400 mL/L CCl4 3 mL/kg subcutaneously two times a week; Spironolactone equivalent to 20 mg/kg per day was given intragastrically; Normal control group: normal chow. Hepatic tissue was observed with light microscopy to compare histological alterations dynamically. The expression of transforming growth factor β1 and tissue inhibitor of metalloproteinase-1 was detected by RT-PCR.
RESULTS: The grades of fibrosis in spironolactone group were less than those in hepatic fibrosis model group at the end of the week 10 (P < 0.05). However, at the end of week 13, there was no significant difference between the two groups. The expression of TGFβ1 and TIMP-1 mRNA was up-regulated when fibrogenesis occurred (P < 0.05). Although at the end of week 10 there was an inclination that the levels of TGFβ1 and TIMP-1 mRNA in spironolactone group were less than those in hepatic fibrosis model group, there was no significant difference between two groups.
CONCLUSION: The expression of TGFβ1 and TIMP-1 mRNA is up-regulated significantly when fibrogenesis occurs. Spironolactone may have a fibrogenesis-inhibiting effect on CCl4 -induced hepatic fibrosis in some degree. Spironolactone has no significant effect on the expression of TGFβ1 and TIMP-1 mRNA
Key Words: N/A
Citation: Huang X, Zhu G, Wang L. Effects of spironolactone on rat liver fibrosis and expression of transforming growth factor β1 and tissue inhibitor of metalloproteinase-1. Shijie Huaren Xiaohua Zazhi 2004; 12(7): 1604-1607
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