Abstract
Objective To investigate the effects of angiotensin Ⅱ (Ang Ⅱ) and captlpril on tissue inhibitorof metalloproteinase-1 (TIMP-1) mRNA expression in culured hepatic stellate cells (HSCs) in vivo.Methods HSC-T6 rat hepatic stellate cell line was chosen as the study model of the activated HSCs.The cultured HSCs were randomized into control group,Ang Ⅱ group (1 × 10-5,1 × 10-7 mol/L) and AngⅡ + captlpril group (1 × 10-5,1 × 10-7 mol/L).HSCs were harvested to measure the TIMP-1 mRNA expression by reverse transcription-polymerase chain reaction (RT-PCR).Results TIMP-1 gene expression levels in different groups of Ang Ⅱ (1 × 10-5 mol/L,1 × 10-7 mol/L) were 1.145 ±0.219 and 0.860±0.115 respectively,and those in control group was 0.523 ± 0.056.TIMP-1 expression levels in different groups of Ang Ⅱ ± captlpril (1 × 10-5 mol/L,1 × 10-7 mol/L) were 0.740 ± 0.089 and 0.590 ± 0.073 respectively,and those in Ang Ⅱ group were 0.850 ± 0.107 and 0.620 ± 0.103 respectively.Conclusion Angiotensin Ⅱ can increase the type Ⅰ collage mRNA expression of HSCs,which can be inhibited by captlpril. Key words: Angiotensin Ⅱ ; Captlpril; Hepatic stellate cells; Tissue inhibitorof metalloproteinase-1
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