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To observe the inhibitory effect of angiotensin-(1-7) on liver fibrosis induced by bile duct ligation in rats. Eighteen Wistar rats were randomized into 3 groups and subject to sham operation, bile duct ligation (BDL), or BDL with angiotensin-(1-7) treatment. An osmotic minipump was implanted intraperitoneally for administration of saline in the sham-operated and BDL groups and angiotensin-(1-7) (25 µg·kg(-1)·h(-1)) in angiotensin-(1-7) treatment group. After a 4-week treatments, the fibrosis score, Masson staining, and hydroxyproline assay were used to evaluate the level of liver fibrosis in the rats, and immunohistochemistry was used to detect expression of α-smooth muscle actin (α-SMA) in the liver tissue. Compared with BDL group, a 4-week treatment with angiotensin-(1-7) following BDL significantly reduced the fibrosis score (2.33±0.52 vs 5.17±0.75), hydroxyproline content (0.36±0.03 vs 0.52±0.04) and α-SMA expression (54.11±17.55 vs 191.84±31.72) in the liver tissue of the rats (P<0.01). Prolonged infusion of angiotensin-(1-7) inhibit the formation of hepatic fibrosis in rats following bile duct ligation.


Xu Li, Zuowei Ning, Wei Luo, Wenyong Zhang, Changhui Yu. Prolonged angiotensin-(1-7) infusion inhibits hepatic fibrosis in rats with bile duct ligation]. Nan fang yi ke da xue xue bao = Journal of Southern Medical University. 2012 Jun;32(7):944-7

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PMID: 22820573

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